Filed Pursuant to Rule No. 424(b)(2)

Registration Statement No. 333-137347

 

CALCULATION OF REGISTRATION FEE

 

 

(1) Includes 3,750,000 shares that the underwriters have the option to purchase to cover over-allotments, if any.

 

(2) The registration fee is being paid on a deferred basis in reliance upon Rules 456(b) and 457(r).

 

Prospectus Supplement

(To Prospectus Dated September 15, 2006)

 

25,000,000 Shares

 

 

 

Common Stock

 

 

We are selling 25,000,000 shares of our common stock. Our common stock is listed on the New York Stock Exchange under the symbol “HK.” On August 11, 2008, the last sale price of our common stock as reported on the New York Stock Exchange was $26.53 per share.

 

Investing in our common stock involves risks. See “Risk Factors” beginning on page S-10 of this prospectus supplement and in the documents incorporated by reference in this prospectus supplement.

 

 

 

We have granted the underwriters a 30-day option to purchase up to an additional 3,750,000 shares of our common stock from us on the same terms and conditions as set forth above if the underwriters sell more than 25,000,000 shares of common stock in this offering.

 

Neither the Securities and Exchange Commission nor any state securities regulators have approved or disapproved of these securities, or determined if this prospectus supplement or the accompanying prospectus is accurate or complete. Any representation to the contrary is a criminal offense.

 

Lehman Brothers, on behalf of the underwriters, expects to deliver the shares on or about August 15, 2008.

 

 

 

Joint Book-Running Managers

 

 

 

JPMorgan

 

 

 

August 11, 2008

 

 

TABLE OF CONTENTS

 

 

This document is in two parts. The first part is this prospectus supplement and the documents incorporated by reference herein, which, among other things, describes the specific terms of this offering. The second part, the accompanying prospectus and the documents incorporated by reference therein, gives more general information, some of which may not apply to this offering. If the description of this offering varies between this prospectus supplement and the accompanying prospectus, you should rely on the information in this prospectus supplement.

 

You should rely only on the information contained in or incorporated by reference in this prospectus supplement, the accompanying prospectus and any related free writing prospectus. We have not authorized anyone to provide you with different information. We are not and the underwriters are not making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information contained in this prospectus supplement or the accompanying prospectus is accurate as of any date other than the date on the front of this prospectus supplement.

 

All references in this prospectus supplement to “we,” “our,” “us,” the “Company,” or “Petrohawk” are to Petrohawk Energy Corporation, a Delaware corporation. All references to wells in this prospectus are to gross wells unless otherwise indicated.

 

SUMMARY

PETROHAWK ENERGY CORPORATION

						2008
						Budgeted
		Net				Full Year				% of Total				Total
		Potential				Non-land				Non-land				2008
		Drilling				Capital				Capital				Gross Wells
Area		Locations(1)				Expenditures				Expenditures				Budgeted
						(In millions)
Haynesville Shale			2,400			$	218				20%				29
Fayetteville Shale			2,500				395				36%				369
Elm Grove/Caspiana			650				208				19%				154
Terryville			450				86				8%				59
Western Region			500				193				17%				191
Total			6,500			$	1,100				100%				802

(1)		Net potential drilling locations represent the number of locations that we currently estimate could potentially be drilled in a particular area determined by (a) dividing the number of net acres in which we have an interest by estimated well spacing requirements applicable to that area, and (b) reducing the resulting

		number by a risk factor based on our management’s internal estimates of the risks and probabilities associated with drilling in that area. See “Risk Factors — Risks relating to our business — We may not be able to drill wells on a substantial portion of our potential resource play locations.”

	•	Haynesville Shale  — In the last several months, the Haynesville Shale has become one of the most active new natural gas plays in the United States. This area is defined by a shale formation located approximately 1,500 feet below the base of the Cotton Valley formation at depths ranging from approximately 10,500 to 13,000 feet. The formation is as much as 300 feet thick and is composed of an organic rich black shale. It is located across numerous parishes in Northwest Louisiana, primarily in Caddo, Bossier, Red River, DeSoto, Webster and Bienville parishes and also in East Texas, primarily in Harrison, Panola and Shelby counties. In addition to the Haynesville Shale potential associated with this play, the Bossier Shale is also believed to be a prospective reservoir. It is situated above the Haynesville Shale in several distinct shale packages below the Lower Cotton Valley sands and appears potentially productive in areas of Northwest Louisiana and Northeast Texas. Our Elm Grove/Caspiana acreage position is located near what we believe is the center of the play. We believe our acreage in those fields is prospective for Haynesville Shale natural gas production based, in part, on a vertical test well we drilled in 2006 in which over 200 feet of Haynesville Shale was found to be present. We currently own or have entered into agreements to acquire approximately 300,000 net acres in the Haynesville Shale play. We

		have a total of approximately 30,000 net acres of Haynesville Shale rights that are held by shallower production in Elm Grove/Caspiana. In addition, we have leasehold interests covering approximately 270,000 additional net acres throughout what we currently believe is the prospective area of the play. We completed our first horizontal Haynesville Shale well in June 2008 at an initial production rate of 16.8 MMcfe/d and with an average rate of production for the first 30 days of 13.7 MMcfe/d. Additionally, we recently completed our second operated well in the Haynesville Shale at an initial production rate of 16.7 MMcfe/d. We are currently drilling our third operated well and are participating in the drilling of an additional non-operated well. We have three horizontal drilling rigs in the area and expect that we will be operating ten rigs by the end of 2008.

	•	Fayetteville Shale  — We have assembled a position of over 155,000 net acres in the Fayetteville Shale, which we believe holds significant potential for production and reserve growth. The Fayetteville Shale is an unconventional gas reservoir located in the Arkoma Basin in Arkansas, at a depth of approximately 1,500 to 6,500 feet and ranging in thickness from 100 to 500 feet. The formation is a Mississippian-age shale that has similar geologic characteristics to the Barnett Shale in the Ft. Worth Basin of North Texas. Drilling in the play began in 2004 and has accelerated rapidly during the past two years, with over 400 wells drilled during 2007. To date, the best results have been obtained by drilling horizontal wells with lateral lengths of 2,500 to 3,000 feet and utilizing slickwater fracture stimulation completions. Due to the high degree of industry drilling success to date across portions of five counties, acquisition of acreage in the play has become extremely competitive. We own varying working and net revenue interests in this field.

	•	Elm Grove/Caspiana Field — Our largest field, located primarily in Bossier and Caddo Parishes of North Louisiana, currently produces primarily from the Hosston and Cotton Valley formations. These zones are composed of low permeability sandstones that require fracture stimulation treatments to produce. We currently own interests in 123 sections with over 34,000 net acres. We own varying working and net revenue interests in this field. We produced 34 Bcfe in 2007 in this field. As of December 31, 2007, estimated proved reserves for the Elm Grove/Caspiana field were approximately 542 Bcfe, of which approximately 50% were classified as proved undeveloped and approximately 19% proved developed non-producing.

	•	Terryville Field  — Located in Lincoln Parish, Louisiana, this is our third largest producing field. We have acquired a significant acreage position and hold interests in over 100 sections with over 42,000 net acres. The objective formations in this field include the Cotton Valley, Bossier and Gray sands. We own varying working and net revenue interests in this field. As of December 31, 2007, estimated proved reserves for this field were approximately 122 Bcfe. In 2007, we drilled 43 wells, all of which were successful. In 2008, we intend to drill 75 wells, including several extension and exploration wells. During 2007, we began a 20-acre downspacing program, drilling three wells. Based on the success to date of this initiative, we have 15 20-acre wells planned in 2008. We drilled 32 wells in the first half of 2008 of which 28 were operated. The majority of these wells have targeted both Lower Cotton Valley and Bossier sands.

	•	West Edmond Hunton Lime Unit — The West Edmond Hunton Lime Unit (WEHLU) is located in central Oklahoma, with the majority of the productive area located in Oklahoma County. We have an interest in approximately 30,000 gross acres in the field. We currently produce approximately 11 MMcfe/d, and at year end 2007, we had approximately 19 Bcfe of estimated proved reserves in this field. Our operations cover approximately 24,300 acres under which we have a 98% working interest. Discovered in 1943, the field has produced in excess of 110 MMBbl of oil and approximately 1 trillion cubic feet of natural gas from the Hunton formation at approximately 7,000 feet. Over the past several years, the field has been redeveloped with a combination of infill vertical and horizontal drilling that has resulted in improved oil and natural gas production. Our most recent operated completion was a horizontal well that had an initial production rate of approximately 3 MMcfe/d, and we have an active program of vertical and horizontal drilling scheduled for 2008 which will be implemented with three operated rigs. In addition to our operated position, we have an area of mutual interest with Chesapeake Energy Corporation that covers approximately 5,700 acres in which we have a non-operated 40% working interest. This portion of the field is also undergoing an active development program.
	•	Permian Basin — The Permian Basin is characterized by oil and natural gas fields with large accumulations of original hydrocarbons in place, long production histories and multiple producing

		formations. Our principal properties are in the Waddell Ranch field in Crane County, Texas, the TXL field in Ector County, Texas, the Sawyer Canyon field in Sutton County, Texas, and the Jalmat field in Lea County, New Mexico. Our producing properties in the Permian Basin are mature fields with fairly predictable production and with relatively low production decline rates. We intend to pursue relatively low risk development drilling and workover projects designed to partially offset the natural production decline rates in our existing fields. We drilled 23 wells in this area in 2007 with a 100% success rate.

	•	Other Areas— We have meaningful interests in various other areas, including, the Cotton Valley/Travis Peak/James Lime trend in the East Texas Basin and the Woodford Shale in the Arkoma Basin. During 2007, we drilled 72 wells in these areas with a 93% success rate.

 

THE OFFERING

Common stock offered		25,000,000 shares(1)
Common stock outstanding after this offering		247,230,287 shares(1)(2)
Use of proceeds		We intend to use the estimated net proceeds from this offering of approximately $637.4 million to repay outstanding borrowings under our senior revolving credit facility, to fund additional leasehold acquisitions (including approximately $300 million in pending transactions), to fund a portion of our increased capital budget for the year ending December 31, 2008 and for general corporate purposes. Please see “Use of Proceeds.”
		If the underwriters exercise their option to purchase additional shares, we intend to use the net proceeds from the sale of additional common shares to fund our increased capital budget, for acquisitions, and for general corporate purposes.
NYSE symbol		HK

(1)		Excludes shares that may be issued to the underwriters pursuant to their option to purchase additional shares. If the underwriters exercise their option to purchase additional shares in full, the total number of shares of common stock offered will be 28,750,000 and the total number of shares of our common stock outstanding after this offering will be 250,980,287 based on a total outstanding shares of common stock of 222,230,287 as of August 8, 2008.
(2)		Excludes 3,864,187 shares potentially issuable as of August 8, 2008, under outstanding options to purchase a total of 5,949,682 shares of common stock at a weighted average exercise price of $10.38, calculated as a net issuance using the closing price of our common stock on August 8, 2008 of $29.61 and excludes 1,768,899 shares potentially issuable as of August 8, 2008, under outstanding warrant agreements covering a total of 1,990,768 shares of common stock at a weighted average exercise price of $3.30, calculated as a net issuance using the closing price of our common stock on August 8, 2008 of $29.61. We also have reserved 5,645,046 additional shares as of that date for future equity awards under our existing benefit plans.

RISK FACTORS

 

SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA

	•	our audited financial statements for the year ended December 31, 2007;
	•	our unaudited pro forma financial statements for the year ended December 31, 2007 and the six months ended June 30, 2007 showing the effect of the divestiture of the Gulf Coast properties as described in the “Summary — Recent Developments” section above as if it were sold on January 1, 2007; and
	•	our unaudited financial statements as of and for the six months ended June 30, 2008.

										Six Months				Six Months
										Ended				Ended
		Year Ended								June 30,				June 30,
		December 31, 2007								2007				2008
		Historical				Pro Forma				Pro Forma				Historical
		(In thousands, except per share amounts)
Operating revenues:
Oil and natural gas		$	883,405			$	622,205			$	296,895			$	519,571
Operating expenses:
Production:
Lease operating			64,666				42,417				20,922				25,297
Workover and other			7,700				3,972				1,928				1,786
Taxes other than income			58,347				39,319				19,846				25,000
Gathering, transportation and other			33,015				25,869				10,969				20,467
General and administrative			73,867				61,982				32,581				33,368
Depletion, depreciation and amortization			395,161				297,501				139,823				169,821
Total operating expenses			632,756				471,060				226,069				275,739
Income from operations			250,649				151,145				70,826				243,832
Other expenses:
Net loss on derivative contracts			(35,011	)			(35,011	)			(27,342	)			(420,346	)
Interest expense and other			(129,603	)			(127,870	)			(61,673	)			(62,691	)
Total other expenses			(164,614	)			(162,881	)			(89,015	)			(483,037	)
Income (loss) before income taxes			86,035				(11,736	)			(18,189	)			(239,205	)
Income tax (provision) benefit			(33,138	)			4,520				6,726				90,827
Net income (loss)		$	52,897			$	(7,216	)		$	(11,463	)		$	(148,378	)
Earnings (loss) per share of common stock:
Basic		$	0.31			$	(0.04	)		$	(0.07	)		$	(0.76	)
Diluted		$	0.31			$	(0.04	)		$	(0.07	)		$	(0.76	)
Weighted average shares outstanding:
Basic			168,006				168,006				167,546				195,060
Diluted			171,248				168,006				167,546				195,060

		As of June 30, 2008
						As Adjusted for
		Actual				this Offering
		(In thousands)
Cash		$	1,075			$	638,455
Long-term debt		$	1,831,337			$	1,831,337
Stockholders’ equity			2,900,292				3,537,672
Total capitalization		$	4,731,629			$	5,369,009

(1)		See “Capitalization” for a description of certain assumptions and qualifications.

 

An investment in our common stock is subject to a number of risks. You should carefully consider the following risks, as well as the section titled “Risk Factors” included in our annual report on Form 10-K for the year ended December 31, 2007 and our quarterly report on Form 10-Q for the quarter ended June 30, 2008, which are incorporated herein by reference, as well as the other documents incorporated herein by reference, in evaluating this investment. If any of the following risks actually occur, our business, financial condition or results of operations could suffer. In any such case, the trading price of our common stock and other securities could decline, and you could lose all or part of your investment.

 

Risks relating to our business

 

Part of our strategy involves exploratory drilling, including drilling in new or emerging plays. As a result, our drilling results in these areas are uncertain.

 

The results of our exploratory drilling in new or emerging plays, such as the Haynesville Shale and the Fayetteville Shale, are more uncertain than drilling results in areas that are developed and have established production. Since new or emerging plays and new formations have limited or no production history, we are less able to use past drilling results in those areas to help predict our future drilling results. To the extent we are unable to execute our expected drilling program in these areas, because of capital constraints, lease expirations, access to adequate gathering systems or pipeline take-away capacity, availability of drilling rigs and other services, or otherwise, and/or natural gas and oil prices decline, the return on our investment in these areas may not be as attractive as we anticipate and our common stock price may decrease. We could incur material write-downs of unevaluated properties, and the value of our undeveloped acreage could decline in the future if our drilling results are unsuccessful.

 

The results of our planned exploratory drilling in the Haynesville Shale, a newly emerging play with limited drilling and production history, are subject to more uncertainties than our drilling program in the more established shallower Lower Cotton Valley formations and may not meet our expectations for reserves or production.

 

We have recently begun drilling wells in the Haynesville Shale, of which two have been completed. Part of our drilling strategy to maximize recoveries from the Haynesville Shale involves the drilling of horizontal wells using completion techniques that have proven to be successful in other shale formations. Our experience with horizontal drilling of the Haynesville Shale to date, as well as the industry’s drilling and production history in the formation, is limited. The ultimate success of these drilling and completion strategies and techniques in this formation will be better evaluated over time as more wells are drilled and production profiles are better established. Accordingly, the results of our future drilling in the emerging Haynesville Shale play are more uncertain than drilling results in the shallower Lower Cotton Valley horizons with established reserves and production histories.

 

Our estimates of our proved reserves as of June 30, 2008 have not been prepared or reviewed by an independent reserve engineering firm and may not be as reliable or as accurate as estimates of proved reserves prepared by an independent reserve engineering firm.

 

Estimates of proved oil and natural gas reserves are inherently uncertain, and any material inaccuracies in our reserve estimates will materially affect the quantities and values of our reserves. The estimate of our proved reserves as of June 30, 2008 included in this prospectus supplement was prepared by our internal reserve engineers and professionals and has not been prepared, audited, reviewed or reported on by an independent reserve engineering firm. Our internally estimated proved reserves may differ materially from independent proved reserve estimates as a result of the estimation process employed by an independent reserve engineering firm. Our internal proved reserve estimates are based upon various assumptions, including assumptions required by the SEC related to oil and natural gas prices, drilling and operating expenses, capital expenditures, taxes and availability of funds. Our internal proved reserve estimates may not be indicative of or may differ materially from the estimates of our proved reserves as of December 31, 2008 that will be prepared by Netherland Sewell & Associates, Inc., our independent petroleum engineering firm.

We have substantial indebtedness and may incur substantially more debt. Any failure to meet our debt obligations would adversely affect our business and financial condition.

 

We have incurred substantial debt amounting to approximately $1.8 billion as of June 30, 2008. As a result of our indebtedness, we will need to use a portion of our cash flow to pay interest, which will reduce the amount we will have available to finance our operations and other business activities and could limit our flexibility in planning for or reacting to changes in our business and the industry in which we operate. Our indebtedness under our senior revolving credit facility is at a variable interest rate, and so a rise in interest rates will generate greater interest expense to the extent we do not have applicable interest rate fluctuation hedges. The amount of our debt may also cause us to be more vulnerable to economic downturns and adverse developments in our business.

 

We may incur substantially more debt in the future. The indentures governing our outstanding senior notes contain restrictions on our incurrence of additional indebtedness. These restrictions, however, are subject to a number of qualifications and exceptions, and under certain circumstances, we could incur substantial additional indebtedness in compliance with these restrictions. Moreover, these restrictions do not prevent us from incurring obligations that do not constitute indebtedness under the indentures. As of June 30, 2008, we had approximately $800 million of additional borrowing capacity under our senior revolving credit facility, subject to specific requirements, including compliance with financial covenants. To the extent we incur indebtedness, other than under our senior revolving credit facility, our borrowing base under our senior revolving credit facility will be reduced by $0.25 for each additional dollar of new debt. Our borrowing base is subject to semi-annual redeterminations. We expect to complete a borrowing base redetermination during the third quarter of 2008.

 

Our ability to meet our debt obligations and other expenses will depend on our future performance, which will be affected by financial, business, economic, regulatory and other factors, many of which we are unable to control. If our cash flow is not sufficient to service our debt, we may be required to refinance the debt, sell assets or sell additional shares of common stock on terms that we do not find attractive if it may be done at all. Further, our failure to comply with the financial and other restrictive covenants relating to our indebtedness could result in a default under that indebtedness, which could adversely affect our business, financial condition and results of operations.

 

We may not be able to drill wells on a substantial portion of our potential resource play locations.

 

In this prospectus supplement, we refer to potential locations for drilling wells; however, we may not be able to drill many of these locations for various reasons. We may not generate or be able to raise sufficient capital to do so. Our actual drilling activities and future drilling budget will depend on drilling results, oil and natural gas prices, the availability and cost of capital, drilling and production costs, availability of drilling services and equipment, lease expirations, gathering system and pipeline transportation constraints, regulatory approvals and other factors. In addition, any drilling activities we are able to conduct on these potential locations may not be successful or result in our ability to add additional proved reserves to our overall proved reserves, which could have a material adverse effect on our future business and results of operations.

 

We may have difficulty financing our planned capital expenditures which could adversely affect our growth.

 

We have experienced, and expect to continue to experience, substantial capital expenditure and working capital needs, particularly as a result of our drilling and leasehold acquisition program, particularly in the Haynesville Shale. During the third quarter of 2008, we increased our 2008 non-land expenditures capital budget from $950 million to $1.1 billion. In addition, during the first half of 2008, we spent approximately $1.1 billion primarily for property acquisitions, including leasehold interests, in the Haynesville Shale and the Fayetteville Shale. Our budgeted capital expenditures for 2008 are expected to exceed substantially the net cash generated by our operations. In addition, we intend to continue to increase our leasehold position in the Haynesville Shale, which will require substantial additional capital in addition to the capital necessary to drill on our existing acreage. We expect to use borrowings under our senior revolving credit facility and a portion

of the net proceeds from this offering and, if necessary, from future equity or debt offerings to fund capital expenditures that are in excess of our cash flow and cash on hand. Our ability to borrow under our senior revolving credit facility is subject to certain conditions and subject to our borrowing base. Additionally, our ability to complete future equity offerings is limited by the availability of authorized common stock under our certificate of incorporation and by general market conditions. If we are not able to borrow sufficient amounts under our senior revolving credit facility and/or are unable to raise sufficient capital to fund our capital expenditures, we may be required to curtail our drilling, development, land acquisition and other activities and/or be forced to sell some of our assets on an untimely or unfavorable basis. Any such curtailment or sale could have a material adverse effect on our results and future operations.

 

Risks relating to this offering and our common stock

 

The market price of our common stock has historically experienced volatility.

 

The market price of our common stock has historically experienced fluctuations, including recent volatility that has resulted in our common stock trading at historically high market prices during 2008 followed by recent significant decreases in the market prices of our common stock. The market price of our common stock is likely to continue to be volatile and subject to price and volume fluctuations in response to commodity price volatility, market and other factors, including the other risk factors discussed elsewhere in this section and in “Cautionary Statement Regarding Forward-Looking Statements.” Volatility or depressed market prices of our common stock could make it difficult for you to resell shares of our common stock when you want or at attractive prices.

 

We may issue shares of preferred stock with greater rights than our common stock.

 

Although we have no current plans, arrangements, understandings or agreements to issue any preferred stock, our certificate of incorporation authorizes our board of directors to issue one or more series of preferred stock and set the terms of the preferred stock without seeking any further approval from our stockholders. Any preferred stock that is issued may rank ahead of our common stock in terms of dividends, liquidation rights or voting rights. If we issue preferred stock, it may adversely affect the market price of our common stock.

 

We have never paid dividends on our common stock and we do not anticipate paying any in the foreseeable future.

 

We have not paid dividends on our common stock to date, and we do not anticipate paying dividends for the foreseeable future. Our earnings, in general, will be used to finance acquisitions and our existing operations to develop our properties. Any future dividends will depend upon our earnings, our then-existing financial requirements and other factors, and will be at the discretion of our board of directors. We are also restricted from paying cash dividends on common stock under our senior revolving credit facility and our long-term debt.

 

There may be future dilution of our common stock, which may adversely affect the market price of our common stock.

 

Except as described under “Underwriting,” we are not restricted from issuing additional shares of our common stock or securities convertible into or exchangeable for our common stock. If we issue additional shares of our common stock or convertible or exchangeable securities, it may adversely affect the market price of our common stock. Our certificate of incorporation authorizes our board of directors to issue up to 300,000,000 shares of our common stock, par value $0.001 per share, and up to 5,000,000 shares of our preferred stock, par value $0.001 per share. As of August 8, 2008, we had outstanding 222,230,287 shares of our common stock and zero shares of our preferred stock.

 

In addition, to the extent options to purchase common stock under our employee stock option plans are exercised, holders of our common stock will experience dilution. As of August 8, 2008, we had outstanding options to purchase 5,949,682 shares of common stock at a weighted average exercise price of $10.38 per share. We also have 1,990,768 shares of common stock potentially issuable under outstanding warrant agreements at a weighted average exercise price of $3.30 per share.

 

The information discussed in this prospectus, our filings with the Securities and Exchange Commission (“SEC”) and our public releases include “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, referred to as the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, referred to as the Exchange Act. All statements, other than statements of historical facts, included herein concerning, among other things, planned capital expenditures, increases in oil and natural gas production, the number of anticipated wells to be drilled after the date hereof, future cash flows and borrowings, pursuit of potential acquisition opportunities, our financial position, business strategy and other plans and objectives for future operations, are forward-looking statements. These forward-looking statements are identified by their use of terms and phrases such as “may,” “expect,” “estimate,” “project,” “plan,” “believe,” “intend,” “achievable,” “anticipate,” “will,” “continue,” “potential,” “should,” “could” and similar terms and phrases. Although we believe that the expectations reflected in these forward-looking statements are reasonable, they do involve certain assumptions, risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of certain factors, including, among others:

 

 

Finally, our future results will depend upon various other risks and uncertainties, including, but not limited to, those detailed in our other filings with the SEC that are incorporated by reference herein and in the section entitled “Risk Factors” included elsewhere in this prospectus supplement or the prospectus. For additional information regarding risks and uncertainties, please read our other filings with the SEC under the

Exchange Act and the Securities Act, including our annual report on Form 10-K for the fiscal year ended December 31, 2007 and our quarterly reports on Form 10-Q for the fiscal quarters ended March 31, 2008 and June 30, 2008. All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the cautionary statements in this paragraph and elsewhere in this prospectus and in the documents incorporated by reference. Other than as required under the securities laws, we do not assume a duty to update these forward-looking statements, whether as a result of new information, subsequent events or circumstances, changes in expectations or otherwise.

 

We estimate that the net proceeds from this offering will be approximately $637.4 million after deducting fees and expenses (including underwriting discounts and commissions) and assuming no exercise of the underwriters’ option to purchase additional shares. We intend to use the net proceeds from this offering to repay outstanding borrowings under our senior revolving credit facility, to fund additional leasehold acquisitions (including approximately $300 million in pending transactions), to fund a portion of our increased capital budget for the year ending December 31, 2008 and for general corporate purposes.

 

If the underwriters exercise in full their option to purchase additional shares, we intend to use the estimated net proceeds of approximately $95.8 million from the sale of the additional shares to fund our increased capital budget, for acquisitions, and for general corporate purposes.

 

As of June 30, 2008, we did not have an outstanding balance on our senior revolving credit facility. Our balance outstanding under our senior revolving credit facility as of August 11, 2008 is $258 million. The additional funds were used to primarily fund our ongoing leasehold acquisition program in the Haynesville Shale. Our borrowings fluctuate during any month depending on our various working capital and capital expenditure needs.

 

Amounts outstanding under our senior revolving credit facility bear interest at specific margins over LIBOR of 1.00% to 1.75% for Eurodollar loans or at specified margins over ABR of 0.00% to 0.50% for ABR loans. Such margins fluctuate based on utilization of the facility. Amounts drawn on the facility will mature on July 12, 2010.

 

Affiliates of certain of the underwriters may be lenders under our senior revolving credit facility and, accordingly, may receive a portion of the proceeds of this offering. Please see “Underwriting — Affiliations.”

 

The following table sets forth our capitalization as of June 30, 2008:

 

 

You should read the information below in conjunction with “Use of Proceeds,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” “Description of Capital Stock” and our consolidated financial statements and related notes included elsewhere or incorporated by reference in this prospectus supplement.

 

 

 

The following table sets forth the high and low intra-day sales prices per share of our common stock as reported on the Nasdaq Global Select Market through March 12, 2007, and on the New York Stock Exchange from March 13, 2007 through August 11, 2008.

 

 

On August 11, 2008, the closing sale price of our common stock, as reported by the NYSE, was $26.53 per share. On August 8, 2008, there were approximately 550 record holders of our common stock.

 

We have never paid cash dividends on our common stock. We intend to retain earnings for use in the operation and expansion of our business and therefore do not anticipate declaring cash dividends on our common stock in the foreseeable future. Any future determination to pay dividends on common stock will be at the discretion of the board of directors and will be dependent upon then existing conditions, including our prospects, and such other factors, as the board of directors deems relevant. We are also restricted from paying cash dividends on common stock under our senior revolving credit facility and our other long-term debt.

 

The following table sets forth the names and ages of all of our executive officers, the positions and offices with us held by such persons and the length of their continuous service as an executive officer:

 

 

Our executive officers are appointed to serve until the annual meeting of the board of directors and until their successors have been elected and qualified.

 

Floyd C. Wilson has served as Chairman of the Board, President and Chief Executive Officer since May 25, 2004. Prior to joining us, Mr. Wilson was President of PHAWK, LLC from its formation in June 2003 until May 2004. Mr. Wilson was the Chairman and Chief Executive Officer of 3TEC Energy Corporation from August 1999 until its merger with Plains Exploration & Production Company in June 2003. Mr. Wilson founded W/E Energy Company L.L.C., formerly known as 3TEC Energy Company L.L.C. in 1998 and served as its President until August 1999. Prior to his involvement with 3TEC, Mr. Wilson founded Hugoton Energy Corporation in 1987, and served as its Chairman, President and Chief Executive Officer. In 1994, Hugoton completed an initial public offering and was merged into Chesapeake Energy Corporation in 1998. Mr. Wilson began his career in the energy business in Houston, Texas in 1970 as a completion engineer. He moved to Wichita, Kansas in 1976 to start an oil and gas operating company, one of several private energy ventures which preceded the formation of Hugoton Energy Corporation.

 

Mark J. Mize has served as Executive Vice President, Chief Financial Officer and Treasurer since August 1, 2007. He served as Vice President, Chief Accounting Officer and Controller from July 2005 until August 1, 2007. Mr. Mize joined us on November 29, 2004 as Controller. Prior to joining us, he was the Manager of Financial Reporting of Cabot Oil & Gas Corporation, a public oil and gas exploration company, from January 2003 to November 2004. Prior to his employment at Cabot Oil & Gas Corporation, he was an Audit Manager with PricewaterhouseCoopers LLP from 1996 to 2002. He is a Certified Public Accountant.

 

Larry L. Helm has served as Executive Vice President — Finance and Administration since August 1, 2007. Mr. Helm served as Vice President — Chief Administrative Officer from July 15, 2004 until August 1, 2005, and as Executive Vice President — Chief Administrative Officer from August 1, 2005 until August 2007. Prior to serving as an executive officer, Mr. Helm served on our board of directors for approximately two months. Mr. Helm was employed with Bank One Corporation, a national banking association, from December 1989 until his retirement in January 2004. Most recently Mr. Helm served as Executive Vice President of Middle Market Banking from October 2001 to December 2003. From April 1998 to August 1999, he served as Executive Vice President of the Energy and Utilities Banking Group. Prior to joining Bank One, he worked for 16 years in the banking industry primarily serving the oil and gas sector. He served as director of 3TEC Energy Corporation from 2000 to June 2003.

 

Stephen W. Herod has served as Executive Vice President — Corporate Development since August 1, 2005. Mr. Herod served as Vice President — Corporate Development from May 25, 2004 until August 1,

2005. Additionally, Mr. Herod is our Assistant Secretary. Prior to joining us, he was employed by PHAWK, LLC from its formation in June 2003 until May 2004. He served as Executive Vice President — Corporate Development for 3TEC Energy Corporation from December 1999 until its merger with Plains Exploration & Production Company in June 2003 and as Assistant Secretary from May 2001 until June 2003. Mr. Herod served as a director of 3TEC from July 1997 until January 2002. Mr. Herod served as the Treasurer of 3TEC from 1999 until 2001. From July 1997 to December 1999, Mr. Herod was Vice President — Corporate Development of 3TEC. Mr. Herod served as President and a director of Shore Oil Company from April 1992 until the merger of Shore with 3TEC’s predecessor in June 1997. He joined Shore’s predecessor as Controller in February 1991. Mr. Herod was employed by Conquest Exploration Company from 1984 until 1991 in various financial management positions, including Operations Accounting Manager. From 1981 to 1984, Superior Oil Company employed Mr. Herod as a financial analyst.

 

Richard K. Stoneburner has served as Executive Vice President — Chief Operating Officer since September 13, 2007. Mr. Stoneburner previously has served as Executive Vice President — Exploration from August 1, 2005, until September 13, 2007. Mr. Stoneburner served as Vice President — Exploration from May 25, 2004 until August 1, 2005. Prior to joining us, he was employed by PHAWK, LLC from its formation in June 2003 until May 2004. He joined 3TEC in August 1999 and was its Vice President — Exploration from December 1999 until its merger with Plains Exploration & Production Company in June 2003. Mr. Stoneburner was employed by W/ E Energy Company as District Geologist from 1998 to 1999. Prior to joining 3TEC, Mr. Stoneburner worked as a geologist for Texas Oil & Gas, The Reach Group, Weber Energy Corporation, Hugoton and, independently through his own company, Stoneburner Exploration, Inc. Mr. Stoneburner has over 25 years of experience in the energy business.

 

David S. Elkouri has served as Executive Vice President — General Counsel and Secretary of Petrohawk since August 1, 2007. Mr. Elkouri co-founded Hinkle Elkouri Law Firm L.L.C. in 1987 where he served as head of that firm’s corporate securities and mergers and acquisitions practice. He has been Petrohawk’s principal outside counsel since 2004, until being named as Executive Vice President and General Counsel in August of 2007. Prior to that time he served as primary outside counsel for 3TEC Energy Corporation from 1998-2003 and Hugoton Energy Corporation from 1993-1998.

 

H. Weldon Holcombe has served as Executive Vice President — Mid-Continent Region since October 1, 2007. Mr. Holcombe joined us on July 12, 2006 in conjunction with our merger with KCS Energy, Inc. (“KCS”). With the merger of KCS and Petrohawk, Mr. Holcombe became responsible for all of the merged company’s operations in the Mid-Continent Region including our interests in the Elm Grove and Terryville fields where he continues to oversee the growth and development of these key assets among others throughout the Mid-Continent region. Prior to the merger of KCS and Petrohawk, Mr. Holcombe served as Senior Vice President of KCS responsible for operations and engineering. Prior to joining KCS in 1996 he spent many years with Exxon Company in project and management positions associated with sour gas treatment, drilling, completions and reservoir management.

 

Our authorized capital stock consists of 300,000,000 shares of common stock, par value of $0.001 per share, and 5,000,000 shares of preferred stock, par value $0.001 per share.

 

Voting Rights

 

Holders of our common stock are entitled to one vote for each share held of record on all matters submitted to a vote of stockholders. The vote of the holders of a majority of the stock represented at a meeting at which a quorum is present is generally required to take stockholder action, unless a greater vote is required by law. The holders are not entitled to cumulative voting in the election of directors. Directors are elected by plurality vote. Accordingly, the holder or holders of a majority of the outstanding shares of common stock will be able to elect all of the directors who are up for election at a meeting of stockholders.

 

Dividends, Distributions and Stock Splits

 

Holders of common stock are entitled to receive dividends if, as and when such dividends are declared by the board of directors out of assets legally available therefor after payment of dividends required to be paid on shares of preferred stock, if any. Our existing debt arrangements restrict our ability to pay cash dividends.

 

Liquidation

 

In the event of any dissolution, liquidation, or winding up of our affairs, whether voluntary or involuntary, after payment of debts and other liabilities and making provision for any holders of its preferred stock who have a liquidation preference, our remaining assets will be distributed ratably among the holders of common stock.

 

Fully Paid

 

All shares of common stock outstanding are fully paid and nonassessable.

 

Other Rights

 

Holders of common stock have no redemption or conversion rights and no preemptive or other rights to subscribe for our securities.

 

The following is a summary of the material United States federal income and, to a limited extent, estate tax consequences relating to the purchase, ownership and disposition of our common stock as of the date hereof. Except where noted, this summary deals only with common stock that is held as a “capital asset” (generally, property held for investment) by a non-U.S. holder (as defined below).

 

A “non-U.S. holder” means a beneficial owner of common stock (other than a partnership or entity treated as a partnership for United States federal income tax purposes) that is not for United States federal income tax purposes any of the following:

 

 

This summary is based upon provisions of the Internal Revenue Code of 1986, as amended, or the “Code,” and Treasury regulations, administrative rulings and judicial decisions, all as of the date hereof. Those authorities may be changed, perhaps retroactively, so as to result in United States federal income and estate tax consequences different from those summarized below. This summary does not address all aspects of United States federal income and estate taxes and does not deal with foreign, state, local or other tax considerations that may be relevant to non-U.S. holders in light of their personal circumstances. In addition, this summary does not address tax considerations applicable to investors that may be subject to special treatment under the United States federal income tax laws such as (without limitation):

 

 

Furthermore, this summary does not address any aspect of state, local or foreign tax laws or the alternative minimum tax provisions of the Code.

If a partnership (including an entity treated as a partnership for United States federal income tax purposes) holds our common stock, the tax treatment of a partner will generally depend upon the status of the partner and the activities of the partnership. If you are a partner of a partnership (including an entity treated as a partnership for United States federal income tax purposes) holding our common stock, you should consult your tax advisor.

 

We have not sought any ruling from the Internal Revenue Service (the “IRS”) with respect to the statements made and the conclusions reached in the following summary, and there can be no assurance that the IRS will agree with such statements and conclusions. INVESTORS CONSIDERING THE PURCHASE OF COMMON STOCK SHOULD CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE APPLICATION OF THE UNITED STATES FEDERAL INCOME AND ESTATE TAX LAWS TO THEIR PARTICULAR SITUATIONS AS WELL AS ANY TAX CONSEQUENCES ARISING UNDER THE LAWS OF ANY STATE, LOCAL OR FOREIGN TAXING JURISDICTION OR UNDER ANY APPLICABLE TAX TREATY.

 

Dividends

 

We do not presently expect to declare or pay any dividends on our common stock in the foreseeable future. However, if we do make distributions on our common stock, such distributions will constitute dividends for United States federal income tax purposes to the extent paid from our current or accumulated earnings and profits, as determined under United States federal income tax principles. Distributions in excess of earnings and profits will constitute a return of capital that is applied against and reduces the non-U.S. holder’s adjusted tax basis in our common stock. Any remaining excess will be treated as gain realized on the sale or other disposition of our common stock and will be treated as described under “Gain on Disposition of Common Stock” below. Any dividend paid to a non-U.S. holder of our common stock ordinarily will be subject to withholding of United States federal income tax at a rate of 30%, or such lower rate as may be specified under an applicable income tax treaty. In order to receive a reduced treaty rate, a non-U.S. holder must provide us with IRS Form W-8BEN (or applicable substitute or successor form) properly certifying eligibility for the reduced rate.

 

Dividends paid to a non-U.S. holder that are effectively connected with the conduct of a trade or business by the non-U.S. holder in the United States (and, if required by an applicable income tax treaty, are attributable to a United States permanent establishment of the non-U.S. holder) generally will be exempt from the withholding tax described above and instead will be subject to United States federal income tax on a net income basis at the regular graduated United States federal income tax rates in the same manner as if the non-U.S. holder were a United States person as defined under the Code. In such cases, we will not have to withhold United States federal income tax if the non-U.S. holder complies with applicable certification and disclosure requirements. In order to obtain this exemption from withholding tax, a non-U.S. holder must provide us with an IRS Form W-8ECI (or applicable substitute or successor form) properly certifying eligibility for such exemption. Any such effectively connected dividends received by a foreign corporation may be subject to an additional “branch profits tax” at a rate of 30% or such lower rate as may be specified by an applicable tax treaty.

 

Gain on Disposition of Common Stock

 

Any gain realized on the disposition of our common stock by a non-U.S. holder generally will not be subject to United States federal income tax unless:

 

 

 

An individual non-U.S. holder who has gain that is described in the first bullet point immediately above will be subject to tax on the net gain derived from the disposition under regular graduated United States federal income tax rates. If a non-U.S. holder that is a foreign corporation has gain described under the first bullet point immediately above, it generally will be subject to tax on its net gain in the same manner as if it were a United States person as defined under the Code, and, in addition, may be subject to the branch profits tax equal to 30% of its effectively connected earnings and profits or at such lower rate as may be specified by an applicable income tax treaty.

 

An individual non-U.S. holder who meets the requirements described in the second bullet point immediately above will be subject to a flat 30% tax on the gain derived from the disposition, which may be offset by United States source capital losses, even though the individual is not considered a resident of the United States.

 

With respect to our status as a USRPHC, we believe that we currently are, and expect to remain for the foreseeable future, a USRPHC for United States federal income tax purposes. However, so long as our common stock continues to be regularly traded on an established securities market, a non-U.S. holder will be taxable on gain recognized on the disposition of our common stock only if the non-U.S. holder actually or constructively holds or held more than 5% of such common stock at any time during the five-year period ending on the date of disposition or, if shorter, the non-U.S. holder’s holding period for our common stock. If our common stock were not considered to be “regularly traded on an established securities market,” all non-U.S. holders would be subject to United States federal income tax on a disposition of our common stock.

 

Non-U.S. holders should consult their own tax advisors with respect to the application of the foregoing rules to their ownership and disposition of our common stock.

 

Federal Estate Tax

 

If you are an individual, common stock owned or treated as being owned by you at the time of your death will be included in your gross estate for United States federal estate tax purposes and may be subject to United States federal estate tax, unless an applicable estate tax treaty provides otherwise.

 

Information Reporting and Backup Withholding

 

We must report annually to the IRS and to each non-U.S. holder the amount of dividends paid to such holder and the tax withheld with respect to such dividends, regardless of whether withholding was required. Copies of the information returns reporting such dividends and withholding may also be made available to the tax authorities in the country in which the non-U.S. holder resides under the provisions of an applicable income tax treaty.

 

A non-U.S. holder will be subject to backup withholding for dividends paid to such holder unless such holder certifies under penalty of perjury that it is a non-U.S. holder (and the payor does not have actual knowledge or reason to know that such holder is a United States person as defined under the Code), or such holder otherwise establishes an exemption.

 

Information reporting and, depending on the circumstances, backup withholding will apply to the proceeds of a sale of our common stock within the United States or conducted through certain United States-related financial intermediaries, unless the beneficial owner certifies under penalty of perjury that it is a non-U.S. holder (and the payor does not have actual knowledge or reason to know that the beneficial owner is a United States person as defined under the Code), or such owner otherwise establishes an exemption.

 

Any amounts withheld under the backup withholding rules may be allowed as a refund or a credit against a non-U.S. holder’s United States federal income tax liability provided the required information is furnished to the IRS.

 

The common stock may be purchased and held by an employee benefit plan or an individual retirement account or other plan subject to Title I of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), Section 4975 of the Code and other similar laws. A fiduciary of an employee benefit plan subject to ERISA, Section 4975 of the Code and/or such other laws must determine that the purchase and holding of the common stock is consistent with its fiduciary duties. The fiduciary of an ERISA plan, as well as any other prospective investor subject to Section 4975 of the Code or any similar law, must also determine that its purchase and holding of the common stock does not result in a non-exempt prohibited transaction as defined in Section 406 of ERISA or Section 4975 of the Code or similar law. Each purchaser and transferee of the common stock who is subject to ERISA and/or Section 4975 of the Code or a similar law will be deemed to have represented by its acquisition and holding of the common stock that such acquisition and holding does not constitute or give rise to a non-exempt prohibited transaction under ERISA, Section 4975 of the Code or any similar law.

 

Lehman Brothers Inc. and Merrill Lynch, Pierce, Fenner & Smith Incorporated are acting as the representatives of the underwriters and joint book-running managers of this offering. Under the terms and subject to the conditions contained in an underwriting agreement dated August 11, 2008, each of the underwriters named below has severally agreed to purchase from us the respective number of shares of common stock shown opposite its name below:

 

The underwriting agreement provides that the underwriters’ obligation to purchase shares of common stock depends on the satisfaction of the conditions contained in the underwriting agreement including:

 

 

Commission and Expenses

 

The following table summarizes the underwriting discounts and commissions we will pay to the underwriters. These amounts are shown assuming both no exercise and full exercise of the underwriters’ option to purchase additional shares. The underwriting fee is the difference between the initial price to the public and the amount the underwriters pay to us for the shares.

 

 

The representatives of the underwriters have advised us that the underwriters propose to offer the shares of common stock directly to the public at the public offering price on the cover of this prospectus supplement and to selected dealers, which may include the underwriters, at such offering price less a selling concession not in excess of $0.5969 per share. After the offering, the representatives may change the offering price and other selling terms.

 

The expenses of the offering that are payable by us are estimated to be $1 million (excluding underwriting discounts and commissions).

Option to Purchase Additional Shares

 

We have granted the underwriters an option exercisable for 30 days after the date of the underwriting agreement to purchase, from time to time, in whole or in part, up to an aggregate of 3,750,000 shares at the public offering price less underwriting discounts and commissions. This option may be exercised if the underwriters sell more than 25,000,000 shares in connection with this offering. To the extent that this option is exercised, each underwriter will be obligated, subject to certain conditions, to purchase its pro rata portion of these additional shares based on the underwriter’s percentage underwriting commitment in the offering as indicated in the table at the beginning of this Underwriting section.

 

Lock-Up Agreements

 

We and our directors and executive officers have agreed, subject to certain limitations and except with respect to certain permitted transfers, that, without the prior written consent of the representatives, we and they will not directly or indirectly (1) offer for sale, sell, pledge, or otherwise dispose of (or enter into any transaction or device that is designed to, or could be expected to, result in the disposition by any person at any time in the future of) any shares of common stock (including, without limitation, shares of common stock that may be deemed to be beneficially owned by us or them in accordance with the rules and regulations of the Securities and Exchange Commission and shares of common stock that may be issued upon exercise of any options or warrants) or securities convertible into or exercisable or exchangeable for common stock, (2) enter into any swap or other derivatives transaction that transfers to another, in whole or in part, any of the economic benefits or risks of ownership of the shares of common stock, whether any such transaction described in clause (1) or (2) above is to be settled by delivery of common stock or other securities, in cash or otherwise, (3) make any demand for or exercise any right or file or cause to be filed a registration statement, including any amendments thereto, with respect to the registration of any shares of common stock or securities convertible, exercisable or exchangeable into common stock or any of our other securities, or (4) publicly disclose the intention to do any of the foregoing for a period of 90 days after the date of this prospectus supplement; provided that the representatives, on behalf of the underwriters, have agreed to allow the Chairman of our board of directors, President and Chief Executive Officer and the Vice Chairman of our board of directors to each sell up to 250,000 shares of our common stock during the 90-day period referenced above.

 

The representatives, in their discretion, may release the common stock and other securities subject to the lock-up agreements described above in whole or in part at any time with or without notice. When determining whether or not to release common stock and other securities from lock-up agreements, the representatives will consider, among other factors, the holder’s reasons for requesting the release, the number of shares of common stock and other securities for which the release is being requested and market conditions at the time.

 

Indemnification

 

We have agreed to indemnify the underwriters against certain liabilities, including liabilities under the Securities Act, and to contribute to payments that the underwriters may be required to make for these liabilities.

 

Stabilization, Short Positions and Penalty Bids

 

The representatives may engage in stabilizing transactions, short sales and purchases to cover positions created by short sales, and penalty bids or purchases for the purpose of pegging, fixing or maintaining the price of the common stock, in accordance with Regulation M under the Securities Exchange Act of 1934:

 

 

 

These stabilizing transactions, syndicate covering transactions and penalty bids may have the effect of raising or maintaining the market price of our common stock or preventing or retarding a decline in the market price of the common stock. As a result, the price of the common stock may be higher than the price that might otherwise exist in the open market. These transactions may be effected on The New York Stock Exchange or otherwise and, if commenced, may be discontinued at any time.

 

Neither we nor any of the underwriters make any representation or prediction as to the direction or magnitude of any effect that the transactions described above may have on the price of the common stock. In addition, neither we nor any of the underwriters make any representation that the representatives will engage in these stabilizing transactions or that any transaction, once commenced, will not be discontinued without notice.

 

Listing

 

Our shares of common stock are listed on the New York Stock Exchange under the symbol “HK.”

 

Affiliations

 

The underwriters have from time to time provided, and in the future may provide, certain investment banking and financial advisory services to us and our affiliates, for which they have received, and in the future would receive, customary fees. In addition, affiliates of J.P. Morgan Securities Inc., Banc of America Securities LLC, BMO Capital Markets Corp., BNP Paribas Securities Corp. and RBC Capital Markets Corporation are lenders under our senior revolving credit facility and, accordingly, will receive a portion of the net proceeds of this offering. Please see “Use of Proceeds.” Because such affiliates will receive more than 10% of the net proceeds of this offering, this offering is being conducted in compliance with the requirements of Rule 2710(h) of the conduct rules of the Financial Industry Regulatory Authority, or FINRA. Because a bona fide independent market exists for our common stock, FINRA does not require that we use a qualified independent underwriter for this offering.

 

Electronic Distribution

 

A prospectus in electronic format may be made available on the Internet sites or through other online services maintained by one or more of the underwriters and/or selling group members participating in this offering, or by their affiliates. In those cases, prospective investors may view offering terms online and, depending upon the particular underwriter or selling group member, prospective investors may be allowed to place orders online. The underwriters may agree with us to allocate a specific number of shares for sale to online brokerage account holders. Any such allocation for online distributions will be made by the representative on the same basis as other allocations.

Other than the prospectus in electronic format, the information on any underwriter’s or selling group member’s web site and any information contained in any other web site maintained by an underwriter or selling group member is not part of the prospectus or the registration statement of which this prospectus supplement and the accompanying prospectus form a part, has not been approved and/or endorsed by us or any underwriter or selling group member in its capacity as underwriter or selling group member and should not be relied upon by investors.

 

Stamp Taxes

 

If you purchase shares of common stock offered in this prospectus supplement and the accompanying prospectus, you may be required to pay stamp taxes and other charges under the laws and practices of the country of purchase, in addition to the offering price listed on the cover page of this prospectus supplement and the accompanying prospectus.

 

United Kingdom

 

This document is only being distributed to and is only directed at (i) persons who are outside the United Kingdom or (ii) to investment professionals falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (the “Order”) or (iii) high net worth entities, and other persons to whom it may lawfully be communicated, falling within Article 49(2)(a) to (e) of the Order (all such persons together being referred to as “relevant persons”). The shares of common stock are only available to, and any invitation, offer or agreement to subscribe, purchase or otherwise acquire such common stock will be engaged in only with, relevant persons. Any person who is not a relevant person should not act or rely on this document or any of its contents.

 

Each of the underwriters has represented and agreed that:

 

 

 

European Economic Area

 

To the extent that the offer of the common stock is made in any Member State of the European Economic Area that has implemented the Prospectus Directive before the date of publication of a prospectus in relation to the common stock which has been approved by the competent authority in the Member State in accordance with the Prospectus Directive (or, where appropriate, published in accordance with the Prospectus Directive and notified to the competent authority in the Member State in accordance with the Prospectus Directive), the offer (including any offer pursuant to this prospectus supplement) is only addressed to qualified investors in that Member State within the meaning of the Prospectus Directive or has been or will be made otherwise in circumstances that do not require us to publish a prospectus pursuant to the Prospectus Directive.

 

In relation to each Member State of the European Economic Area which has implemented the Prospectus Directive (each, a “Relevant Member State”) each underwriter represents and warrants that it has not made and will not make an offer to the public of any shares which are the subject of the offering contemplated by this prospectus supplement (the “Shares”) in that Relevant Member State other than the offers contemplated in the prospectus supplement once the prospectus supplement has been approved by the competent authority in that Relevant Member State and published in accordance with the Prospectus Directive as implemented in that Relevant Member State, except that it may make an offer to the public in that Relevant Member State of any

Shares at any time under the following exemptions under the Prospectus Directive, if they have been implemented in that Relevant Member State:

 

 

 

 

 

provided that no such offer of Shares shall result in a requirement for the publication by the company or any underwriter of a prospectus pursuant to Article 3 of the Prospectus Directive.

 

For the purposes of this provision, the expression an “offer to the public” in relation to any Shares in any Relevant Member State means the communication in any form and by any means of sufficient information on the terms of the offer and any Shares to be offered so as to enable an investor to decide to purchase any Shares, as the same may be varied in that Member State by any measure implementing the Prospectus Directive in that Member State and the expression “Prospectus Directive” means Directive 2003/71/EC and includes any relevant implementing measure in each Relevant Member State.

 

Australia

 

No prospectus or other disclosure document (as defined in the Corporations Act 2001 (Cth) of Australia (“Corporations Act”)) in relation to the common stock has been or will be lodged with the Australian Securities & Investments Commission (“ASIC”). This document has not been lodged with ASIC and is only directed to certain categories of exempt persons. Accordingly, if you receive this document in Australia:

 

(a) you confirm and warrant that you are either:

 

(i) a “sophisticated investor” under section 708(8)(a) or (b) of the Corporations Act;

 

(ii) a “sophisticated investor” under section 708(8)(c) or (d) of the Corporations Act and that you have provided an accountant’s certificate to us which complies with the requirements of section 708(8)(c)(i) or (ii) of the Corporations Act and related regulations before the offer has been made;

 

(iii) a person associated with the company under section 708(12) of the Corporations Act; or

 

(iv) a “professional investor” within the meaning of section 708(11)(a) or (b) of the Corporations Act,

 

and to the extent that you are unable to confirm or warrant that you are an exempt sophisticated investor, associated person or professional investor under the Corporations Act any offer made to you under this document is void and incapable of acceptance; and

 

(b) you warrant and agree that you will not offer any of the shares of common stock for resale in Australia within 12 months of those shares of common stock being issued unless any such resale offer is exempt from the requirement to issue a disclosure document under section 708 of the Corporations Act.

 

Hong Kong

 

The common stock may not be offered or sold in Hong Kong, by means of any document, other than (a) to “professional investors” as defined in the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) and any rules made under that Ordinance or (b) in other circumstances which do not result in the document being a “prospectus” as defined in the Companies Ordinance (Cap. 32, Laws of Hong Kong) or

which do not constitute an offer to the public within the meaning of that Ordinance. No advertisement, invitation or document relating to the common stock may be issued or may be in the possession of any person for the purpose of the issue, whether in Hong Kong or elsewhere, which is directed at, or the contents of which are likely to be read by, the public in Hong Kong (except if permitted to do so under the laws of Hong Kong) other than with respect to the shares of common stock which are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” as defined in the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) or any rules made under that Ordinance.

 

India

 

This prospectus has not been and will not be registered as a prospectus with the Registrar of Companies in India or with the Securities and Exchange Board of India. This prospectus or any other material relating to these securities is for information purposes only and may not be circulated or distributed, directly or indirectly, to the public or any members of the public in India and in any event to not more than 50 persons in India. Further, persons into whose possession this prospectus comes are required to inform themselves about and to observe any such restrictions. Each prospective investor is advised to consult its advisors about the particular consequences to it of an investment in these securities. Each prospective investor is also advised that any investment in these securities by it is subject to the regulations prescribed by the Reserve Bank of India and the Foreign Exchange Management Act and any regulations framed thereunder.

 

Japan

 

No securities registration statement (“SRS”) has been filed under Article 4, Paragraph 1 of the Financial Instruments and Exchange Law of Japan (Law No. 25 of 1948, as amended) (“FIEL”) in relation to the common stock. The shares of common stock are being offered in a private placement to “qualified institutional investors” (tekikaku-kikan-toshika) under Article 10 of the Cabinet Office Ordinance concerning Definitions provided in Article 2 of the FIEL (the Ministry of Finance Ordinance No. 14, as amended) (“QIIs”), under Article 2, Paragraph 3, Item 2 i of the FIEL. Any QII acquiring the common stock in this offer may not transfer or resell those shares except to other QIIs.

 

Korea

 

The common stock may not be offered, sold and delivered directly or indirectly, or offered or sold to any person for reoffering or resale, directly or indirectly, in Korea or to any resident of Korea except pursuant to the applicable laws and regulations of Korea, including the Korea Securities and Exchange Act and the Foreign Exchange Transaction Law and the decrees and regulations thereunder. The shares of common stock have not been registered with the Financial Services Commission of Korea for public offering in Korea. Furthermore, the common stock may not be resold to Korean residents unless the purchaser of the common stock complies with all applicable regulatory requirements (including but not limited to government approval requirements under the Foreign Exchange Transaction Law and its subordinate decrees and regulations) in connection with the purchase of the common stock.

 

Singapore

 

This prospectus has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, this prospectus and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the common stock may not be circulated or distributed, nor may the common stock be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (i) to an institutional investor under Section 274 of the Securities and Future Act, Chapter 289 of Singapore (the “SFA”), (ii) to a “relevant person” as defined in Section 275(2) of the SFA, or any person pursuant to Section 275 (1A), and in accordance with the conditions, specified in Section 275 of the SFA or (iii) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA.

Where the shares of common stock are subscribed and purchased under Section 275 of the SFA by a relevant person which is:

 

(a) a corporation (which is not an accredited investor (as defined in Section 4A of the SFA)) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or

 

(b) a trust (where the trustee is not an accredited investor (as defined in Section 4A of the SFA)) whose sole whole purpose is to hold investments and each beneficiary is an accredited investor,

 

shares, debentures and units of shares and debentures of that corporation or the beneficiaries’ rights and interest (howsoever described) in that trust shall not be transferable within six months after that corporation or that trust has acquired the common stock under Section 275 of the SFA except:

 

(i) to an institutional investor under Section 274 of the SFA or to a relevant person (as defined in Section 275(2) of the SFA) and in accordance with the conditions, specified in Section 275 of the SFA;

 

(ii) (in the case of a corporation) where the transfer arises from an offer referred to in Section 275(1A) of the SFA, or (in the case of a trust) where the transfer arises from an offer that is made on terms that such rights or interests are acquired at a consideration of not less than S$200,000 (or its equivalent in a foreign currency) for each transaction, whether such amount is to be paid for in cash or by exchange of securities or other assets;

 

(iii) where no consideration is or will be given for the transfer; or

 

(iv) where the transfer is by operation of law.

 

By accepting this prospectus, the recipient hereof represents and warrants that he is entitled to receive it in accordance with the restrictions set forth above and agrees to be bound by limitations contained herein. Any failure to comply with these limitations may constitute a violation of law.

 

The validity of the issuance of the common stock covered by this prospectus supplement will be passed upon for us by Thompson & Knight LLP, counsel for the Company. Vinson & Elkins L.L.P. has represented the underwriters in connection with this offering.

 

The financial statements incorporated by reference into this prospectus supplement from our annual report on Form 10-K for the year ended December 31, 2007, and the effectiveness of our internal control over financial reporting have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report, which is incorporated herein by reference. Such financial statements have been so incorporated in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

 

The estimated reserve evaluations and related calculations of Netherland, Sewell & Associates, Inc., an independent reserve engineering firm, included or incorporated by reference in this prospectus supplement have been included or incorporated by reference in reliance on the authority of that firm as experts in reserve engineering.

 

We file annual, quarterly and current reports, proxy statements and other information with the SEC. You can read and copy these materials at the SEC’s public reference room at 100 F Street, N.E., Washington, D.C. 20549. You can obtain information about the operation of the SEC’s public reference room by calling the SEC at

1-800-SEC-0330. The SEC also maintains an Internet website that contains information we have filed electronically with the SEC, which you can access over the Internet at http://www.sec.gov. Our common stock is listed on the NYSE under the symbol “HK,” and reports, proxy statements and other information also can be inspected at the offices of the NYSE located at 20 Broad Street, New York, New York 10005.

 

Our internet address is http://www.petrohawk.com. Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other filings with the SEC are available, free of charge, through our website, as soon as reasonably practicable after those reports or filings are electronically filed with or furnished to the SEC. Information on our website or any other website is not incorporated by reference in this prospectus supplement or the accompanying prospectus and does not constitute a part of this prospectus supplement or the accompanying prospectus.

 

We have filed a registration statement with the SEC to register the securities offered by this prospectus supplement. As permitted by SEC rules, this prospectus supplement and the accompanying prospectus do not contain all of the information we have included in the registration statement and the accompanying exhibits and schedules we file with the SEC. You may refer to the registration statement, exhibits and schedules for more information about us and the securities. The registration statement, exhibits and schedules are available at the SEC’s public reference room or through its Internet website.

 

The SEC allows us to “incorporate by reference” the information we have filed with it, which means that we can disclose important information to you by referring you to those documents. The information we incorporate by reference is an important part of this prospectus supplement or the accompanying prospectus, and later information that we file with the SEC will automatically update and supersede this information. We incorporate by reference the documents listed below and any future filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (excluding any information furnished pursuant to Item 2.02 and Item 7.01 on any Current Report on Form 8-K), after the date of this prospectus supplement and prior to the termination of this offering. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this prospectus supplement to the extent that a statement contained herein or in any other subsequently filed document which also is incorporated or deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this prospectus supplement. The following documents we filed with the SEC pursuant to the Exchange Act are incorporated herein by reference (excluding any information furnished to the SEC pursuant to Item 2.02 or Item 7.01 or any current report on Form 8-K):

 

 

 

We will provide without charge to each person, including any beneficial owner, to whom a copy of this prospectus supplement is delivered, upon the written or oral request of such person, a copy of any or all of the information incorporated by reference in this prospectus supplement, other than exhibits to such information (unless such exhibits are specifically incorporated by reference into the information that this prospectus supplement incorporates). Requests for such copies should be directed to:

 

Petrohawk Energy Corporation

Attn: Investor Relations

1000 Louisiana, Suite 5600

Houston, Texas 77002

Phone (832) 204-2700

investors@petrohawk.com

PROSPECTUS

Common Stock
Preferred Stock
Warrants

 

 

 

Petrohawk Energy Corporation may offer, from time to time:

 

 

In addition, selling stockholders to be named in a prospectus supplement may offer, from time to time, shares of our common stock. We will provide the specific terms of any offering and the offered securities in supplements to this prospectus. Any prospectus supplement may also add, update or change information contained in this prospectus. You should read this prospectus and the accompanying prospectus supplement carefully before you make your investment decision.

 

This prospectus may not be used to sell securities unless accompanied by a prospectus supplement which will describe the method and terms of the offering.

 

Our common stock is quoted on The NASDAQ Global Select Market under the symbol “HAWK”. None of the other securities offered by this prospectus are currently publicly traded.

 

We may sell the securities to or through underwriters, to other purchasers, through agents, or through a combination of these methods. The names of any underwriters will be stated in the applicable prospectus supplement.

 

 

Investing in our securities involves risks. Please read carefully the information under the headings “Risk Factors” beginning on page 4 and “Cautionary Statement Regarding Forward-Looking Statements” on page ii of this prospectus before you invest in our securities. This information may also be included in any supplement and/or may be incorporated by reference into this prospectus.

 

 

 

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

 

The date of this prospectus is September 15, 2006.

You should rely only on the information contained or incorporated by reference in this prospectus. We have not authorized anyone to provide you with different information. You should read the entire prospectus and any prospectus supplement, as well as the documents incorporated by reference into this prospectus or any accompanying prospectus supplement, before making an investment decision. We do not imply or represent by delivering this prospectus that Petrohawk Energy Corporation, or its business, is unchanged after the date on the front of this prospectus or that the information in this prospectus is correct as of any time after such date.

 

 

TABLE OF CONTENTS

 

 

This prospectus is part of a registration statement on Form S-3 that we filed with the Securities and Exchange Commission (“SEC”) utilizing a “shelf” registration process or continuous registration process. Using this process, we may, from time to time, offer any combination of securities described in this prospectus in one or more offerings and selling stockholders to be named in a prospectus supplement may, from time to time, sell common stock in one or more offerings. This prospectus provides you with a general description of the securities that may be offered. Each time securities are sold, we will provide a prospectus supplement that will contain specific information about the terms of that particular offering. The prospectus supplement may also add, update or change information contained in this prospectus. If there is any inconsistency between the information in this prospectus and any prospectus supplement, you should rely on the information in that prospectus supplement. You should read both this prospectus and any applicable prospectus supplement together with additional information described under the heading “Where You Can Find More Information” starting on page 18 of this prospectus.

 

When used in this prospectus and any prospectus supplement, the terms “Petrohawk,” “we,” “our,” “us” and the “Company” refer to Petrohawk Energy Corporation and its subsidiaries.

 

The information discussed in this prospectus, our filings with the SEC and our public releases include “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, referred to as the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, referred to as the Exchange Act. All statements, other than statements of historical facts, included herein concerning, among other things, planned capital expenditures, increases in oil and gas production, the number of anticipated wells to be drilled after the date hereof, future cash flows and borrowings, pursuit of potential acquisition opportunities, our financial position, business strategy and other plans and objectives for future operations, are forward-looking statements. These forward-looking statements are identified by their use of terms and phrases such as “may,” “expect,” “estimate,” “project,” “plan,” “believe,” “achievable,” “anticipate” and similar terms and phrases. Although we believe that the expectations reflected in these forward-looking statements are reasonable, they do involve certain assumptions, risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of certain factors, including, among others:

 

 

Finally, our future results will depend upon various other risks and uncertainties, including, but not limited to, those detailed in our other filings with the SEC that are incorporated by reference herein and in the section entitled “Risk Factors” included elsewhere in this prospectus. For additional information regarding risks and uncertainties, please read our other filings with the SEC under the Exchange Act and the Securities Act, including our annual report on Form 10-K, as amended, for the fiscal year ended December 31, 2005 and our quarterly reports on Form 10-Q for the fiscal quarters ended March 31, 2006 and June 30, 2006. All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the cautionary statements in this paragraph and elsewhere in this prospectus and in the documents incorporated by reference. Other than as required under the securities laws, we do not assume a duty to update these forward-looking statements, whether as a result of new information, subsequent events or circumstances, changes in expectations or otherwise.

The following highlights information about us and our business contained elsewhere or incorporated by reference in this prospectus. It is not complete and does not contain all of the information that you should consider before investing in our securities. To fully understand our business you should carefully read this prospectus together with the more detailed information incorporated by reference in this prospectus.

 

We are an independent oil and gas company engaged in the acquisition, development, production and exploration of oil and gas properties located in North America. Our properties are concentrated in the East Texas/North Louisiana, Gulf Coast, Permian Basin, and Anadarko/Arkoma regions. We focus on maintaining a balanced, geographically diverse portfolio of long-lived, lower risk reserves along with shorter lived, higher margin reserves. We believe that this balanced reserve mix provides a diversified cash flow foundation to fund our development and exploration drilling program.

 

As of December 31, 2005, pro forma for our recent merger with KCS Energy, Inc., hereinafter KCS, described below, our estimated proved reserves were approximately 980 Bcfe, of which 77% were natural gas, 68% were proved developed and 74% were operated. In the first six months of 2006, we produced approximately 24.0 Bcfe.

 

Corporate Information

 

Petrohawk is a Delaware corporation originally organized in Nevada in June 1997 as “Beta Oil & Gas, Inc.” and reincorporated in Delaware during 2004. Our principal offices are located at 1100 Louisiana Street, Suite 4400, Houston, Texas 77002, telephone number (832) 204-2700, fax number (832) 204-2800, and our website can be found at www.petrohawk.com. Unless specifically incorporated by reference in this prospectus, information that you may find on our website is not part of this prospectus.

 

Recent Developments

 

We have recently completed several transactions:

 

Merger with KCS Energy, Inc.

 

On July 12, 2006, we completed the merger of KCS with and into us. In the merger, we issued approximately 83.8 million shares of our common stock and paid approximately $450.3 million cash as consideration to the former stockholders of KCS. In connection with the merger, we assumed or refinanced all outstanding debt of KCS, including $275.0 million in principal amount of 71/8% senior notes due 2012, hereinafter referred to as the 2012 Notes. Pro forma for the Terryville Acquisition (as described below), as of December 31, 2005, KCS’ estimated proved reserves were approximately 463 Bcfe, of which approximately 88% was natural gas and approximately 73% was classified as proved developed.

 

Terryville Acquisition

 

On April 19, 2006, KCS completed an acquisition of oil and gas properties located in the Terryville field in North Louisiana for $26.2 million, hereinafter referred to as the Terryville Acquisition. The Terryville Acquisition included approximately 10,300 acres located in Lincoln Parish, Louisiana, and proved reserves internally estimated at approximately 11.2 Bcfe.

 

Issuance of Senior Notes Due 2013

 

On July 12, 2006, in connection with the merger with KCS and pursuant to a purchase agreement dated June 23, 2006, among us and certain financial institutions, as initial purchasers, we issued and sold under an indenture an aggregate principal amount of $650.0 million of 91/8% senior notes due 2013, hereinafter referred to as the 2013 Notes, in accordance with a private placement conducted pursuant to Rule 144A under the

Securities Act. The initial purchasers purchased the 2013 Notes at a purchase price of 97.617% of the aggregate principal amount of the 2013 Notes. The 2013 Notes are guaranteed by certain of our subsidiaries.

 

On July 24, 2006, we issued an additional $125.0 million of our 2013 Notes, hereinafter referred to as the additional notes. The additional notes were issued at 101.125% of the face amount for gross proceeds of approximately $140.6 million, before estimated offering expenses and the initial purchasers’ discount. The additional notes were issued as additional debt securities under the indenture pursuant to which we had previously issued $650 million in aggregate principal amount of our 91/8% senior notes due 2013. The 2013 Notes and the additional notes constitute a single class of securities under the indenture pursuant to which they were issued.

 

On September 1, 2006, we filed a registration statement on Form S-4 in connection with the exchange of the 2013 Notes for similar notes registered under the Securities Act.

 

Tender Offer for Outstanding 97/8% Senior Notes due 2011

 

On July 12, 2006, we accepted for purchase $124.2 million principal amount of our 97/8% senior notes due 2011, hereinafter referred to as the 2011 Notes, for aggregate cash consideration of $139.1 million, which we (as successor by way of merger to Mission Resources Corporation on July 28, 2005) issued in April 2004. Following acceptance, we, the parties named therein as subsidiary guarantors, and The Bank of New York Trust Company, NA., as trustee, entered into a supplemental indenture that supplements and amends the indenture that governs the terms of the 2011 Notes, to eliminate substantially all of the restrictive covenants contained in the indenture and the 2011 Notes, eliminate certain events of default, and modify certain other covenants and provisions contained in the indenture and the 2011 Notes. As of September 13, 2006, a total of $254,000 principal amount of 2011 Notes remains outstanding.

 

Amendment to Revolving Credit Facility

 

On July 12, 2006, we entered into a Second Amended and Restated Senior Revolving Credit Agreement, hereinafter referred to as the revolving credit facility, which amended and restated our $600.0 million amended and restated senior revolving credit agreement dated July 28, 2005. The revolving credit facility provides for a $1 billion facility with an initial borrowing base of $700.0 million that will be redetermined on a semi-annual basis, with us and the lenders each having the right to one annual interim unscheduled redetermination, and adjusted based on our oil and gas properties, reserves, other indebtedness, and other relevant factors. Amounts outstanding under the revolving credit facility bear interest at specified margins over the London Interbank Offered Rate (“LIBOR”) of 1.00% to 1.75% for Eurodollar loans or at specified margins over the Alternate Base Rate (“ABR”) of 0.00% to 0.50% for ABR loans. Such margins will fluctuate based on the utilization of the facility. Borrowings under the revolving credit facility will be secured by first priority liens on substantially all of our assets, including pursuant to the terms of the Second Amended and Restated Guarantee and Collateral Agreement, all of the assets of, and equity interest in, our subsidiaries. Amounts drawn on the revolving credit facility will mature on July 12, 2010.

 

The revolving credit facility contains customary financial and other covenants, including minimum working capital levels, minimum coverage of interest expenses, and a maximum leverage ratio. In addition, we are subject to covenants limiting dividends and other restricted payments, transactions with affiliates, incurrence of debt, changes of control, asset sales, and liens on properties.

 

Gulf of Mexico Divestiture

 

On March 21, 2006, we sold substantially all of our Gulf of Mexico properties for $52.5 million in cash. These properties had estimated proved reserves as of December 31, 2005 of approximately 25 Bcfe, were approximately 70% gas, 59% proved developed and 27% operated. Production at closing was estimated to be approximately 10 MMcfe per day.

The North Louisiana Acquisitions

 

On January 27, 2006, we completed the acquisition of all of the issued and outstanding common stock of Winwell Resources, Inc., hereinafter referred to as Winwell. The aggregate consideration paid was approximately $208 million in cash after certain closing adjustments. Also on January 27, 2006, we completed an acquisition of assets from Redley Company, hereinafter referred to as Redley. The aggregate consideration paid was approximately $86 million in cash after certain closing adjustments. Through the Winwell and Redley transactions (collectively, hereinafter referred to as the North Louisiana Acquisitions), we acquired oil and gas properties in the Elm Grove and Caspiana fields in North Louisiana. These properties have internally estimated proved reserves as of December 31, 2005 of approximately 106 Bcfe, are approximately 98% gas, 29% proved developed and 80% operated.

 

Mission Resources Corporation Acquisition

 

We acquired Mission Resources Corporation, hereinafter referred to as Mission, by merger on July 28, 2005. We issued approximately 19.6 million shares of common stock and paid approximately $139.5 million in cash to the former stockholders of Mission. In addition, all outstanding options to purchase Mission common stock were converted into options to purchase our common stock using an exchange ratio of 0.7641 shares of Petrohawk common stock per share of Mission common stock underlying each option. We also assumed Mission’s long-term debt of approximately $184 million, including the 2011 Notes. At December 31, 2004, Mission’s estimated net proved reserves were approximately 226 Bcfe.

 

In addition to the other information set forth elsewhere or incorporated by reference in this prospectus, the following risks relating to us and our securities should be considered carefully before making an investment decision. The following should be read in conjunction with our risk factors described in our Annual Report on Form 10-K for the year ended December 31, 2005, as amended, which are specifically incorporated by reference in this prospectus and which are modified to the extent so modified below, and any risks that may be described in other filings that we make with the SEC or in the prospectus supplements relating to specific offerings of securities.

 

Risk Factors Relating to Our Business

 

Oil and natural gas prices are volatile, and low prices could have a material adverse impact on our business.

 

Our revenues, profitability and future growth and the carrying value of our properties depend substantially on prevailing oil and natural gas prices. Prices also affect the amount of cash flow available for capital expenditures and our ability to borrow and raise additional capital. The amount we will be able to borrow under our revolving credit facility will be subject to periodic redetermination based in part on changing expectations of future prices. Lower prices may also reduce the amount of oil and natural gas that we can economically produce and have an adverse effect on the value of our properties.

 

Historically, the markets for oil and natural gas have been volatile, and they are likely to continue to be volatile in the future. Among the factors that can cause volatility are:

 

 

These external factors and the volatile nature of the energy markets make it difficult to estimate future prices of oil and natural gas. The spot prices for crude oil and natural gas at the close of business on December 31, 2005 were $57.75 per Bbl and $10.075 per MMBtu and on September 13, 2006 were $64.32 per Bbl and $5.42 per MMBtu.

 

Unless we replace our reserves, our reserves and production will decline, which would adversely affect our financial condition, results of operations and cash flows.

 

In general, the volume of production from oil and natural gas properties declines as reserves are depleted. Our reserves will decline as they are produced unless we acquire properties with proved reserves or conduct successful development and exploration activities. Thus, our future oil and natural gas production and, therefore, our cash flow and income are highly dependent upon our level of success in finding or acquiring

additional reserves. However, we cannot assure you that our future acquisition, development and exploration activities will result in any specific amount of additional proved reserves or that we will be able to drill productive wells at acceptable costs.

 

The successful acquisition of producing properties requires an assessment of a number of factors. These factors include recoverable reserves, future oil and natural gas prices, operating costs and potential environmental and other liabilities, title issues and other factors. Such assessments are inexact and their accuracy is inherently uncertain. In connection with such assessments, we perform a review of the subject properties that we believe is thorough. However, there is no assurance that such a review will reveal all existing or potential problems or allow us to fully assess the deficiencies and capabilities of such properties. We cannot assure you that we will be able to acquire properties at acceptable prices because the competition for producing oil and natural gas properties is particularly intense at this time and many of our competitors have financial and other resources which are substantially greater than those available to us.

 

Our bank lenders can limit our borrowing capabilities, which may materially impact our operations.

 

As of June 30, 2006, on a pro forma basis, after giving effect to our issuance of the 2013 Notes and the application of the net proceeds to fund a portion of our payment of cash to KCS stockholders, our repayment of KCS debt and transaction expenses incurred in connection with our merger with KCS, our repurchase of our 2011 Notes and repayment in full of our second lien term facility, our revolving credit facility balance was $325.5 million, and we have $374.5 million of additional available borrowing capacity under our $1 billion revolving credit facility, assuming a borrowing base of $700 million. The borrowing base limitation under our revolving credit facility is semi-annually redetermined. Redeterminations are based upon a number of factors, including commodity prices and reserve levels. The next redetermination date is expected to occur in the fourth quarter of 2006. Upon a redetermination, our borrowing base could be substantially reduced. We intend to finance our development, acquisition and exploration activities with cash flow from operations, bank borrowings and other financing activities. A reduction in our borrowing base could limit our activity in this regard. In addition, we may significantly alter our capitalization in order to make future acquisitions or develop our properties. These changes in capitalization may significantly increase our level of debt. If we incur additional debt for these or other purposes, the related risks that we now face could intensify. A higher level of debt also increases the risk that we may default on our debt obligations. Our ability to meet our debt obligations and to reduce our level of debt depends on our future performance which is affected by general economic conditions and financial, business and other factors. Many of these factors are beyond our control. Our level of debt affects our operations in several important ways, including the following:

 

 

Our ability to finance our business activities will require us to generate substantial cash flow.

 

Our business activities require substantial capital. We have budgeted 2006 drilling expenditures of approximately $600 million pro forma for the combined companies for the entire year. We intend to finance our capital expenditures in the future primarily from cash flow from operations. We cannot be sure that our

business will continue to generate cash flow at or above current levels. Future cash flows and the availability of financing will be subject to a number of variables, such as:

 

 

If we are unable to generate sufficient cash flow from operations to service our debt, we may have to obtain additional financing through the issuance of debt and/or equity. We cannot be sure that any additional financing will be available to us on acceptable terms. The level of our debt financing could also materially affect our operations.

 

If our revenues were to decrease due to lower oil and natural gas prices, decreased production or other reasons, and if we could not obtain capital through our revolving credit facility or otherwise, our ability to execute our development and acquisition plans, replace our reserves or maintain production levels could be greatly limited.

 

Drilling wells is speculative, often involves significant costs and may not result in additions to our production or reserves.

 

Developing and exploring for oil and natural gas reserves involves a high degree of operating and financial risk. The actual costs of drilling, completing and operating wells often exceed our budget for such costs and can increase significantly when drilling costs rise due to a tightening in the supply of various types of oilfield equipment and related services. Drilling may be unsuccessful for many reasons, including title problems, cost overruns, equipment shortages, mechanical difficulties, and faulty assumptions about geological features. Moreover, the drilling of a productive oil or natural gas well does not ensure a profitable investment. Exploratory wells bear a much greater risk of loss than development wells. A variety of factors, including geological and market-related, can cause a well to become uneconomical or only marginally economic. In addition to their cost, unsuccessful wells can hurt our efforts to replace reserves.

 

Estimates of oil and gas reserves are uncertain and any material inaccuracies in these reserve estimates will materially affect the quantities and the value of our reserves.

 

This prospectus and the information incorporated by reference contain estimates of our proved oil and natural gas reserves. These estimates are based upon various assumptions, including assumptions required by the SEC relating to oil and natural gas prices, drilling and operating expenses, capital expenditures, taxes and availability of funds. The process of estimating oil and natural gas reserves is complex. This process requires significant decisions and assumptions in the evaluation of available geological, geophysical, engineering and economic data for each reservoir. Therefore, these estimates are inherently imprecise.

 

Actual future production, oil and natural gas prices, revenues, taxes, development expenditures, operating expenses and quantities of recoverable oil and natural gas reserves will vary from those estimated. Any significant variance could materially affect the estimated quantities and the value of our reserves. Our properties may also be susceptible to hydrocarbon drainage from production by other operators on adjacent properties. In addition, we may adjust estimates of proved reserves to reflect production history, results of exploration and development, prevailing oil and natural gas prices and other factors, many of which are beyond our control.

 

At December 31, 2005, approximately 32% of our estimated pro forma proved reserves were undeveloped. Estimates of undeveloped reserves are less certain than estimates of developed reserves. Recovery of undeveloped reserves requires significant capital expenditures and successful drilling operations. The reserve data assumes that we will make significant capital expenditures to develop our reserves. Although we have

prepared estimates of these oil and natural gas reserves and the costs associated with development of these reserves in accordance with SEC regulations, we cannot assure you that the estimated costs or estimated reserves are accurate, that development will occur as scheduled or that the actual results will be as estimated.

 

We depend substantially on the continued presence of key personnel for critical management decisions and industry contacts.

 

Our success depends upon the continued contributions of our executive officers and key employees, particularly with respect to providing the critical management decisions and contacts necessary to manage and maintain growth within a highly competitive industry. Competition for qualified personnel can be intense, particularly in the oil and natural gas industry, and there are a limited number of people with the requisite knowledge and experience. Under these conditions, we could be unable to attract and retain these personnel. The loss of the services of any of our executive officers or other key employees for any reason could have a material adverse effect on our business, operating results, financial condition and cash flows.

 

Our business is highly competitive.

 

The oil and natural gas industry is highly competitive in many respects, including identification of attractive oil and natural gas properties for acquisition, drilling and development, securing financing for such activities and obtaining the necessary equipment and personnel to conduct such operations and activities. In seeking suitable opportunities, we compete with a number of other companies, including large oil and natural gas companies and other independent operators with greater financial resources, larger numbers of personnel and facilities, and, in some cases, with more expertise. There can be no assurance that we will be able to compete effectively with these entities.

 

Hedging transactions may limit our potential gains and increase our potential losses.

 

In order to manage our exposure to price risks in the marketing of our oil and natural gas production, we have entered into oil and natural gas price hedging arrangements with respect to a portion of our expected production. We will most likely enter into additional hedging transactions in the future. While intended to reduce the effects of volatile oil and natural gas prices, such transactions may limit our potential gains and increase our potential losses if oil and natural gas prices were to rise substantially over the price established by the hedge. In addition, such transactions may expose us to the risk of loss in certain circumstances, including instances in which:

 

 

Our oil and natural gas activities are subject to various risks which are beyond our control.

 

Our operations are subject to many risks and hazards incident to exploring and drilling for, producing, transporting, marketing and selling oil and natural gas. Although we may take precautionary measures, many of these risks and hazards are beyond our control and unavoidable under the circumstances. Many of these risks or hazards could materially and adversely affect our revenues and expenses, the ability of certain of our wells to produce oil and natural gas in commercial quantities, the rate of production and the economics of the development of, and our investment in the prospects in which we have or will acquire an interest. Any of these risks and hazards could materially and adversely affect our financial condition, results of operations and cash flows. Such risks and hazards include:

 

 

 

As a result of these risks, expenditures, quantities and rates of production, revenues and cash operating costs may he materially adversely affected and may differ materially from those anticipated by us.

 

Governmental and environmental regulations could adversely affect our business.

 

Our business is subject to federal, state and local laws and regulations on taxation, the exploration for and development, production and marketing of oil and natural gas and safety matters. Many laws and regulations require drilling permits and govern the spacing of wells, rates of production, prevention of waste, unitization and pooling of properties and other matters. These laws and regulations have increased the costs of planning, designing, drilling, installing, operating and abandoning our oil and natural gas wells and other facilities. In addition, these laws and regulations, and any others that are passed by the jurisdictions where we have production, could limit the total number of wells drilled or the allowable production from successful wells, which could limit our revenues.

 

Our operations are also subject to complex environmental laws and regulations adopted by the various jurisdictions in which we have or expect to have oil and natural gas operations. We could incur liability to governments or third parties for any unlawful discharge of oil, natural gas or other pollutants into the air, soil or water, including responsibility for remedial costs. We could potentially discharge these materials into the environment in any of the following ways:

 

 

Because the requirements imposed by laws and regulations are frequently changed, we cannot assure you that laws and regulations enacted in the future, including changes to existing laws and regulations, will not adversely affect our business. In addition, because we acquire interests in properties that have been operated in the past by others, we may be liable for environmental damage caused by the former operators.

We cannot be certain that the insurance coverage maintained by us will be adequate to cover all losses which may be sustained in connection with all oil and natural gas activities.

 

We maintain general and excess liability policies, which we consider to be reasonable and consistent with industry standards. These policies generally cover:

 

 

There can be no assurance that this insurance coverage will be sufficient to cover every claim made against us in the future. A loss in connection with our oil and natural gas properties could have a materially adverse effect on our financial position and results of operations to the extent that the insurance coverage provided under our policies cover only a portion of any such loss.

 

Title to the properties in which we have an interest may be impaired by title defects.

 

We generally obtain title opinions on significant properties that we drill or acquire. However, there is no assurance that we will not suffer a monetary loss from title defects or title failure. Generally, under the terms of the operating agreements affecting our properties, any monetary loss is to be borne by all parties to any such agreement in proportion to their interests in such property. If there are any title defects or defects in assignment of leasehold rights in properties in which we hold an interest, we will suffer a financial loss.

 

We may not be able to successfully integrate the businesses of Petrohawk and KCS following the merger with KCS.

 

The success of the merger with KCS depends in large part upon our ability to integrate our organizations, operations, systems and personnel. The integration of two previously independent companies is a challenging, time-consuming and costly process. We have grown rapidly through recent acquisitions and will be required to integrate our recent acquisitions with KCS. It is possible that the integration process could result in the loss of key employees, the disruption of each company’s ongoing businesses or inconsistencies in standards, controls, procedures and policies that adversely affect our ability to maintain relationships with suppliers, customers and employees or to achieve the anticipated benefits of the merger with KCS. In addition, successful integration of the companies will require the dedication of significant management resources, which will temporarily detract attention from the day-to-day businesses of the combined company. It we are not able to integrate our organizations, operations, systems and personnel in a timely and efficient manner, the anticipated benefits of the merger with KCS may not be realized fully or at all or may take longer to realize than expected.

 

We may be required to take non-cash asset writedowns if oil and natural gas prices decline.

 

We may be required under full cost accounting rules to write down the carrying value of oil and natural gas properties if oil and natural gas prices decline or if there are substantial downward adjustments to our estimated proved reserves, increases in our estimates of development costs or deterioration in our exploration results.

 

We utilize the full cost method of accounting for oil and natural gas exploration and development activities. Under full cost accounting, we are required by SEC regulations to perform a ceiling test each quarter. The ceiling test is an impairment test and generally establishes a maximum, or “ceiling,” of the book

value of oil and natural gas properties that is equal to the expected after tax present value (discounted at 10%) of the future net cash flows from proved reserves, including the effect of cash flow hedges, calculated using prevailing oil and natural gas prices on the last day of the period. If the net book value of oil and natural gas properties (reduced by any related net deferred income tax liability and asset retirement obligation) exceeds the ceiling limitation, SEC regulations require us to impair or “writedown” the book value of our oil and natural gas properties. Depending on the magnitude, a ceiling test writedown could significantly reduce income, or produce a loss. As ceiling test computations involve the prevailing oil and natural gas prices on the last day of the quarter, it is impossible to predict the likelihood, timing and magnitude of any future impairments. The book value of our proved oil and natural gas properties increased in 2005 as a function of higher acquisition, exploration and development costs for the year and the increase in future development costs associated with reserves added during the year. To the extent finding and development costs continue to increase, we will become more susceptible to ceiling test writedowns in lower price environments.

 

Our results of operations could be adversely affected as a result of non-cash goodwill impairments.

 

We expect to record, in connection with the merger with KCS, approximately $867 million in goodwill. In addition, we have booked goodwill in connection with other acquisitions we have made. Goodwill represents the excess of the purchase price paid by us for various acquisitions plus liabilities assumed, including deferred taxes recorded in connection with the acquisitions, over the estimated fair market value of the tangible net assets acquired.

 

Goodwill is not amortized, but instead must be tested at least annually for impairment by applying a fair value based test. Goodwill is deemed impaired to the extent of any excess of its carrying amount over the residual fair value of the business. Such non-cash impairment could significantly reduce earnings during the period in which the impairment occurs, and would result in a corresponding reduction to goodwill and stockholders’ equity.

 

Risks Relating to Common Stock

 

We have not paid, and do not anticipate paying, any dividends on our common stock in the foreseeable future.

 

We have never paid any cash dividends on our common stock. We do not expect to declare or pay any cash or other dividends in the foreseeable future on our common stock. Our revolving credit facility restricts our ability to pay cash dividends on our capital stock, and we may also enter into credit agreements or other borrowing arrangements in the future that restrict our ability to declare cash dividends on our preferred stock and common stock.

 

The trading price of our common stock may be volatile.

 

The trading price of our shares of common stock has from time to time fluctuated widely and in the future may be subject to similar fluctuations. The trading price may be affected by a number of factors including the risk factors set forth herein as well as our operating results, financial condition, drilling activities and general conditions in the oil and natural gas exploration and development industry, the economy, the securities markets and other events. In recent years broad stock market indices, in general, and smaller capitalization companies, in particular, have experienced substantial price fluctuations. In a volatile market, we may experience wide fluctuations in the market price of our common stock. These fluctuations may have an extremely negative effect on the market price of our common stock.

 

Provisions in our organizational documents and under Delaware law could delay or prevent a change in control of our company, which could adversely affect the price of our common stock.

 

The existence of some provisions in our organizational documents and under Delaware law could delay or prevent a change in control of our company, which could adversely affect the price of our common stock. The provisions in our certificate of incorporation and bylaws that could delay or prevent an unsolicited change in control of our company include a staggered board of directors, board authority to issue preferred stock, and advance notice provisions for director nominations or business to be considered at a stockholder meeting. In addition, Delaware law imposes restrictions on mergers and other business combinations between us and any holder of 15% or more of our outstanding common stock.

 

Except as otherwise described in an applicable prospectus supplement, we intend to use the net proceeds from the sale of the securities for one or more of the following purposes:

 

 

Until we apply the proceeds from a sale of securities to their intended purposes, we may invest these proceeds in short-term investments.

 

The specific allocations of the proceeds we receive from the sale of our securities will be described in the applicable prospectus supplement.

 

We will not receive proceeds from sale of our common stock by selling stockholders except as may otherwise be stated in an applicable prospectus supplement.

 

Set forth below is a description of the material terms of our capital stock. This description, however, is not complete and is qualified by reference to our certificate of incorporation (including our certificates of designation, if any) and bylaws. Copies of our certificate of incorporation (including our certificates of designation, if any) and bylaws have been filed with the SEC and are incorporated by reference into this prospectus. Please read “Where You Can Find More Information.” You should also be aware that the summary below does not give full effect to the provisions of statutory or common law which may affect your rights as a stockholder.

 

Authorized Capital Stock

 

Our authorized capital stock consists of 300 million shares of common stock, par value of $0.001 per share, and 5 million shares of preferred stock, par value $0.001 per share, 1.5 million shares of which had been designated 8% cumulative convertible preferred stock. Effective July 10, 2006, we redeemed all of our outstanding 8% cumulative convertible preferred stock. Currently, no shares of 8% cumulative convertible preferred stock are outstanding, and as a result of the redemption, the shares of 8% cumulative convertible preferred stock were deemed to be retired, and currently have the status of authorized and unissued shares of preferred stock, undesignated as to series, and are subject to later designation and issuance by us in accordance with our certificate of incorporation. As a result, as of the date of this prospectus, the authorized shares of our preferred stock, par value $0.001 per share, are undesignated as to series. We do not have any current plans to designate and issue shares of 8% cumulative convertible preferred stock in the future.

 

Selected provisions of our organizational documents are summarized below; however, you should read the organizational documents, which are filed as exhibits to our periodic filings with the SEC and incorporated herein by reference, for other provisions that may be important to you. In addition, you should be aware that the summary below does not give full effect to the terms of the provisions of statutory or common law which may affect your rights as a stockholder.

 

Common Stock

 

We may, from time to time, issue an indeterminate amount of shares of common stock. As of September 13, 2006, there were 168,260,069 shares issued and outstanding. Our common stock is listed on the Nasdaq Global Select Market under the symbol “HAWK.”

 

Voting rights.  Holders of our common stock are entitled to one vote for each share held of record on all matters submitted to a vote of stockholders. The vote of the holders of a majority of the stock represented at a meeting at which a quorum is present is generally required to take stockholder action, unless a greater vote is required by law. The holders are not entitled to cumulative voting in the election of directors. Directors are elected by plurality vote. Accordingly, the holder or holders of a majority of the outstanding shares of common stock will be able to elect our entire board of directors.

 

Dividends, distributions and stock splits.  Holders of common stock are entitled to receive dividends if, as and when such dividends are declared by the board of directors out of assets legally available therefore after payment of dividends required to be paid on shares of preferred stock, if any. Our existing debt arrangements restrict our ability to pay cash dividends.

 

Liquidation.  In the event of any dissolution, liquidation, or winding up of our affairs, whether voluntary or involuntary, after payment of debts and other liabilities and making provision for any holders of its preferred stock who have a liquidation preference, our remaining assets will be distributed ratably among the holders of common stock.

 

Fully paid.  All shares of common stock outstanding are fully paid and nonassessable.

 

Other rights.  Holders of common stock have no redemption or conversion rights and no preemptive or other rights to subscribe for our securities.

Preferred Stock

 

Our board of directors has the authority to issue 5,000,000 shares of undesignated preferred stock. As of the date of this prospectus, no shares of preferred stock are outstanding. We may issue preferred stock from time to time in one or more series, without stockholder approval, when authorized by our board of directors.

 

Each series of preferred stock will have specific financial and other terms that we will describe in a prospectus supplement. Any or all of the rights of our preferred stock may be greater than the rights of our common stock.

 

Upon issuance of a particular series of preferred stock, our board of directors is authorized to specify:

 

 

Our board of directors’ ability to authorize, without stockholder approval, the issuance of preferred stock with conversion and other rights, may affect adversely the rights of holders of our common stock or other series of preferred stock that may be outstanding. In certain circumstances, an issuance of preferred stock could have the effect of decreasing the market price of our common stock. Management believes that the availability of preferred stock provides us with increased flexibility in structuring possible future financing and acquisitions and in meeting other needs that might arise.

 

Specific Terms of a Series of Preferred Stock

 

The preferred stock we may offer may be issued in one or more series. Shares of preferred stock, when issued against full payment of the purchase price, will be fully paid and non-assessable. Their par value or liquidation preference, however, may not be indicative of the price at which they may actually trade after their issuance. If necessary, the prospectus supplement may provide a description of U.S. Federal income tax consequences relating to the purchase and ownership of the series of preferred stock offered by that prospectus supplement.

 

A prospectus supplement may discuss some or all of the following features of the series of preferred stock to which it relates (and any additional terms not described below if applicable):

 

 

 

Unless we state otherwise in the prospectus supplement, the preferred stock will have priority over our common stock with respect to dividends and distribution of assets, but will rank junior to all our outstanding indebtedness for borrowed money.

 

Any series of preferred stock could rank senior, equal or junior to our other capital stock, as may be specified in a prospectus supplement, as long as our restated articles of incorporation so permits.

 

8% Cumulative Convertible Preferred Stock

 

Effective July 10, 2006, we redeemed all of our outstanding 8% cumulative convertible preferred stock. Currently, no shares of 8% cumulative convertible preferred stock are outstanding, and as a result of the redemption, the shares of 8% cumulative convertible preferred stock were deemed to be retired, and currently have the status of authorized and unissued shares of preferred stock, undesignated as to series, and are subject to later designation and issuance by us in accordance with our certificate of incorporation. As a result, as of the date of this prospectus, the authorized shares of our preferred stock, par value $0.001 per share, are undesignated as to series. We do not have any current plans to designate and issue shares of 8% cumulative convertible preferred stock in the future.

 

Transfer Agent and Registrar

 

The transfer agent and registrar for our common and preferred stock is American Stock Transfer & Trust Company, Inc. Its phone number is (800) 937-5449.

 

Warrants

 

We may issue warrants to purchase common stock or preferred stock. We may issue warrants independently or together with the common stock and/or preferred stock offered, which may be attached to or separate from these securities. We may issue warrants in such amounts or in as many distinct series as we wish. The warrants may be issued under warrant agreements as detailed in the prospectus supplement relating to the warrants being offered.

 

Specific Terms of the Warrants

 

The applicable prospectus supplement may describe some or all of the following terms, where applicable, of the warrants in respect of which this prospectus is being delivered (and any additional terms not described below if applicable):

 

 

 

Delaware Anti-Takeover Law and Certain Charter and Bylaw Provisions

 

Our certificate of incorporation, bylaws and the Delaware General Corporation Law (“DGCL”) contain certain provisions that could discourage potential takeover attempts and make it more difficult for stockholders to change management or receive a premium for their shares.

 

Delaware law.  We are subject to Section 203 of the DGCL, an anti-takeover law. In general, the statute prohibits a publicly-held Delaware corporation from engaging in a business combination with an “interested stockholder” for a period of three years after the date of the transaction in which the person became an interested stockholder. A “business combination” includes a merger, sale of 10% or more of our assets and certain other transactions resulting in a financial benefit to the stockholder. For purposes of Section 203, an “interested stockholder” is defined to include any person that is:

 

 

However, the above provisions of Section 203 do not apply if:

 

 

Stockholders may, by adopting an amendment to the corporation’s certificate of incorporation or bylaws, elect for the corporation not to be governed by Section 203, effective 12 months after adoption. Neither our certificate of incorporation nor our bylaws exempt us from the restrictions imposed under Section 203. It is anticipated that the provisions of Section 203 may encourage companies interested in acquiring us to negotiate in advance with our board.

 

Charter and bylaw provisions.  Delaware law permits any Delaware corporation to classify its board of directors into as many as three (3) classes as equally as possible with staggered terms of office. After initial implementation of a classified board, one class will be elected at each annual meeting of the stockholders to serve for a term of one, two or three years (depending upon the number of classes into which directors are classified) or until their successors are elected and take office. Our certificate of incorporation and bylaws provide for a classified board of directors by dividing the board into three (3) classes, with no class having more than one director more than any other class. The stockholders of a Delaware corporation with a classified board of directors may remove a director only “for cause” unless the company’s certificate of incorporation provides otherwise. Our bylaws restrict the removal of a director except “for cause.”

 

The following table sets forth our historical consolidated ratio of earnings to combined fixed charges and preference dividends for the periods shown:

 

 

 

 

The following table sets forth our consolidated ratio of earnings to combined fixed charges and preference dividends for the year ended December 31, 2005, and for the six months ended June 30, 2006, which are shown on a pro forma basis after giving effect to our issuance of the 2013 Notes and the application of the net proceeds to fund a portion of our payment of cash to KCS stockholders, our repayment of KCS debt and transaction expenses incurred in connection with our merger with KCS, our repurchase of our 2011 Notes and repayment in full of our second lien term facility described herein. The information in the following table has been derived from pro forma financial statements prepared in connection with our recent merger with KCS, which have been incorporated herein by reference to Exhibit 9.01 to our Form 8-K filed with the SEC on September 1, 2006:

 

 

 

The ratio was computed by dividing earnings by combined fixed charges and preference dividends. For this purpose, “earnings” represent the aggregate of pre-tax income from continuing operations before reorganization items and cumulative effect of accounting change plus fixed charges excluding capitalized interest. “Fixed charges” include interest expensed, capitalized interest, amortization of debt issuance costs and the portion of non-capitalized rental expense deemed to be the equivalent of interest, and preference security dividend requirements of consolidated subsidiaries. “Preference security dividend” is the amount of pre-tax earnings that is required to pay the dividends on outstanding preference securities.

 

Information about selling stockholders, where applicable, will be set forth in a prospectus supplement, in a post-effective amendment, or in filings we make with the SEC under the Exchange Act which are incorporated by reference.

 

We and the selling stockholders may sell the securities (a) through agents; (b) through underwriters or dealers; (c) directly to one or more purchasers; or (d) through a combination of any of these methods of sale. We will identify the specific plan of distribution, including any underwriters, dealers, agents or direct purchasers and their compensation in a prospectus supplement.

 

The validity of the issuance of the common stock, preferred stock and warrants covered by this prospectus has been passed upon for us by Hinkle Elkouri Law Firm LLC, Wichita, Kansas.

 

The consolidated financial statements and management’s report on the effectiveness of internal control over financial reporting incorporated in this prospectus by reference from Petrohawk Energy Corporation’s Annual Report on Form 10-K have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report, which is incorporated herein by reference, and have been so incorporated in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

 

The consolidated financial statements of Petrohawk Energy Corporation (formerly Beta Oil & Gas Corporation) for the year ended December 31, 2003, appearing in Petrohawk Energy Corporation’s Annual Report (Form 10-K/A) for the year ended December 31, 2005 have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their report thereon included therein and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such report given on the authority of such firm as experts in accounting and auditing.

 

The consolidated financial statements of KCS Energy, Inc. and subsidiaries appearing in KCS Energy, Inc.’s Annual Report (Form 10-K) for the year ended December 31, 2005, and KCS Energy, Inc. management’s assessment of the effectiveness of internal control over financial reporting as of December 31, 2005 included therein, have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their reports thereon, included therein, and incorporated herein by reference. Such consolidated financial statements and management’s assessment are incorporated herein by reference in reliance upon such reports given on the authority of such firm as experts in accounting and auditing.

 

Certain estimates of proved oil and gas reserves for Petrohawk Energy Corporation referred to and incorporated by reference in this prospectus were based in part upon engineering reports prepared by Netherland, Sewell & Associates, Inc. (“Netherland Sewell”), independent petroleum engineers. These estimates are included and incorporated herein in reliance on the authority of such firm as experts in such matters.

 

Certain estimates of proved oil and gas reserves for KCS Energy, Inc. referred to and incorporated by reference in this prospectus were based in part upon engineering reports prepared by KCS and audited by Netherland Sewell, independent petroleum engineers. These estimates are included and incorporated herein in reliance on the authority of such firm as experts in such matters.

 

This prospectus is a part of a registration statement on Form S-3 that we filed on September 15, 2006, with the SEC under the Securities Act. We refer you to this registration statement, for further information about us and our common stock offered hereby.

 

We file annual reports on Form 10-K, quarterly reports on Form 10-Q, and current reports on Form 8-K and other information with the SEC (Commission File No. 000-25717). These filings contain important information that does not appear in this prospectus. For further information about Petrohawk, you may read and copy these filings at the SEC’s Public Reference Room at 100 F Street, N.E., Room 1580, Washington, D.C. 20549-0102. You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. Our SEC filings are also available on the SEC Internet site at www.sec.gov, which contains periodic reports and other information regarding issuers that file electronically. In addition, through our website, www.petrohawk.com, you can access electronic copies of documents we file with the SEC, including our annual reports on Form 10-K, quarterly reports on Form 10-Q, and current reports on Form 8-K and any amendments to those reports. Information on our website is not incorporated by

reference in this prospectus. Access to those electronic filings is available as soon as practicable after filing with the SEC. You may also request a copy of those filings, excluding exhibits, at no cost by writing, emailing or telephoning our principal executive office, which is:

 

Petrohawk Energy Corporation

Attn: Investor Relations

1100 Louisiana, Suite 4400

Houston, Texas 77002

Phone (832) 204-2700

investors@petrohawk.com

 

We are “incorporating by reference” herein important business and financial information that we file with the SEC, which means that we can disclose important information to you by referring you to those documents. The information incorporated by reference or deemed incorporated by reference is an important part of this prospectus, and information that we file later with the SEC will be deemed to update automatically and supersede this incorporated information.

 

The following documents we filed with the SEC pursuant to the Exchange Act are incorporated herein by reference (excluding any information furnished to the SEC pursuant to Item 2.02 or Item 7.01 or any current report on Form 8-K):

 

 

All documents filed by us pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act (excluding any information furnished pursuant to Item 2.02 or Item 7.01 on any current report on Form 8-K) subsequent to the date of this filing and prior to the termination of this offering shall be deemed to be incorporated in this prospectus and to be a part hereof from the date of the filing of such document. Any statement contained in a document incorporated by reference herein shall be deemed to be modified or superseded for all purposes to the extent that a statement contained in this prospectus, or in any other subsequently filed document which is also incorporated or deemed to be incorporated by reference, modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this prospectus.

 

Readers should not assume that the information in this prospectus and the applicable supplement is accurate as of any date other than the date on the front cover of the document, or if a specific date is used with respect to any information, as of any date other than the specific date used.

You can obtain any of the documents incorporated by reference in this prospectus through us or from the SEC through the SEC’s web site or at its facilities described above. Documents incorporated by reference are available from us without charge, excluding any exhibits to those documents that are not specifically incorporated by reference in such documents. You can request a copy of the documents incorporated by reference in this prospectus and a copy of the other agreements referred to in this prospectus by requesting them in writing at the following address or by telephone from us at the following address and telephone number:

 

Petrohawk Energy Corporation

Attn: Investor Relations

1100 Louisiana, Suite 4400

Houston, Texas 77002

Phone (832) 204-2700

investors@petrohawk.com

25,000,000 Shares

 

 

 

 

 

Common Stock

 

 

 

 

 

 

PROSPECTUS SUPPLEMENT

August 11, 2008

 

 

 

 

 

 

Joint Book-Running Managers

 

Lehman Brothers

Merrill Lynch & Co.

 

 

JPMorgan

 

 

Banc of America Securities LLC

BMO Capital Markets

BNP PARIBAS

Coker & Palmer

Jefferies & Company

Raymond James

RBC Capital Markets

Tristone Capital

Tudor, Pickering, Holt & Co.

UBS Investment Bank