FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Mize Mark   2. Issuer Name and Ticker or Trading Symbol PETROHAWK ENERGY CORP [HK] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP - CFO, Treasurer (Last) (First) (Middle) 1000 LOUISIANA, SUITE 5600 3. Date of Earliest Transaction (Month/Day/Year) 03/21/2011 (Street) HOUSTON, TX 77002 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/21/2011   M   15,000 A $ 10.23 152,007 (1) D   Common Stock 03/21/2011   M   50,000 A $ 18.08 202,007 D   Common Stock 03/21/2011   M   48,666 A $ 15.23 250,673 D   Common Stock 03/21/2011   S   1,600 D $ 22.66 249,073 D   Common Stock 03/21/2011   S   6,180 D $ 22.67 242,893 D   Common Stock 03/21/2011   S   1,900 D $ 22.6701 240,993 D   Common Stock 03/21/2011   S   1,100 D $ 22.6765 239,893 D   Common Stock 03/21/2011   S   800 D $ 22.6788 239,093 D   Common Stock 03/21/2011   S   4,500 D $ 22.68 234,593 D   Common Stock 03/21/2011   S   1,000 D $ 22.6801 233,593 D   Common Stock 03/21/2011   S   3,400 D $ 22.6844 230,193 D   Common Stock 03/21/2011   S   6,932 D $ 22.69 223,261 D   Common Stock 03/21/2011   S   3,518 D $ 22.6901 219,743 D   Common Stock 03/21/2011   S   2,300 D $ 22.6973 217,443 D   Common Stock 03/21/2011   S   2,600 D $ 22.6984 214,843 D   Common Stock 03/21/2011   S   9,038 D $ 22.7 205,805 D   Common Stock 03/21/2011   S   2,300 D $ 22.7016 203,505 D   Common Stock 03/21/2011   S   582 D $ 22.71 202,923 D   Common Stock 03/21/2011   S   2,300 D $ 22.7101 200,623 D   Common Stock 03/21/2011   S   7,350 D $ 22.72 193,273 D   Common Stock 03/21/2011   S   1,200 D $ 22.7266 192,073 D   Common Stock 03/21/2011   S   640 D $ 22.73 191,433 D   Common Stock 03/21/2011   S   2,500 D $ 22.7352 188,933 D   Common Stock 03/21/2011   S   800 D $ 22.75 188,133 D   Common Stock 03/21/2011   S   5,600 D $ 22.76 182,533 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Employee Stock Option (right to buy)

$ 10.23

03/21/2011

M

15,000

08/11/2009(2)

08/11/2016

Common Stock

15,000

$ 0

0

D

Employee Stock Option (right to buy)

$ 18.08

03/21/2011

M

50,000

02/28/2011(3)

02/28/2018

Common Stock

50,000

$ 0

0

D

Employee Stock Option (right to buy)

$ 15.23

03/21/2011

M

48,666

(4)

03/02/2019

Common Stock

48,666

$ 0

24,334

D

Stock Appreciation Right

$ 11.64

03/21/2011

M

30,000

03/02/2010(5)

03/02/2017

Common Stock

30,000

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Mize Mark 1000 LOUISIANA SUITE 5600 HOUSTON, TX 77002			EVP - CFO, Treasurer

Signatures

David S. Elkouri, Attorney-in-fact		03/23/2011
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	A review of the reporting person's brokerage account holdings resulted in the discovery that the reporting person's common stock holdings have been overstated by five shares. Accordingly, the reporting person's common stock holdings have been reduced by five shares.
(2)	The option vested in three equal annual installments beginning August 11, 2007.
(3)	The option vested in three equal annual installments beginning February 28, 2009.
(4)	The option vests in three equal annual installments beginning March 2, 2010.
(5)	The stock appreciation right vested in three equal annual installments beginning March 2, 2008.
Remarks: This report is one of three.  The total number of shares sold by the reporting person on March 21, 2011 was 123,666. The total number of shares sold by the reporting person on March 22, 2011 was 9,382.

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