SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_____________

SCHEDULE 13G
(Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULE 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13d-2(b)

AMERICAN RIVER BANKSHARES
(Name of Issuer)
 
Common Stock
(Title of Class of Securities)
 
029326105
(CUSIP Number)
 
October 22, 2015
(Date of Event Which Requires Filing of This Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
 
[   ] Rule 13d-1(b)
[X] Rule 13d-1(c)
[   ] Rule 13d-1(d)
____________________

*         The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).
 
(Continued on following pages)
CUSIP NO.                          029326105
13G
Page 2 of 9 Pages

1
NAMES OF REPORTING PERSONS
 
M3 FUNDS, LLC
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 
 
(a) [   ]
(b) [   ]
3
SEC USE ONLY
 
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
STATE OF DELAWARE, UNITED STATES OF AMERICA
  
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING PERSON WITH
5
SOLE VOTING POWER
 
N/A
  
6
SHARED VOTING POWER
 
387,262 shares of Common Stock
  
7
SOLE DISPOSITIVE POWER
 
N/A
  
8
SHARED DISPOSITIVE POWER
 
387,262 shares of Common Stock
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
387,262 shares of Common Stock
  
10
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES
 
[   ]
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
 
5.27% of the outstanding shares of Common Stock
  
12
TYPE OF REPORTING PERSON
 
OO (Limited Liability Company)
  

CUSIP NO.                          029326105
13G
Page 3 of 9 Pages

1
NAMES OF REPORTING PERSONS
 
M3 PARTNERS, LP
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 
 
(a) [   ]
(b) [   ]
3
SEC USE ONLY
 
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
STATE OF DELAWARE, UNITED STATES OF AMERICA
  
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING PERSON WITH
5
SOLE VOTING POWER
 
N/A
  
6
SHARED VOTING POWER
 
387,262 shares of Common Stock
  
7
SOLE DISPOSITIVE POWER
 
N/A
  
8
SHARED DISPOSITIVE POWER
 
387,262 shares of Common Stock
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
387,262 shares of Common Stock
  
10
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES
 
[   ]
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
 
5.27% of the outstanding shares of Common Stock
  
12
TYPE OF REPORTING PERSON
 
PN (Limited Partnership)
  
 
CUSIP NO.                          029326105
13G
Page 4 of 9 Pages

1
NAMES OF REPORTING PERSONS
 
M3F, INC.
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 
 
(a) [   ]
(b) [   ]
3
SEC USE ONLY
 
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
STATE OF UTAH, UNITED STATES OF AMERICA
  
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING PERSON WITH
5
SOLE VOTING POWER
 
N/A
  
6
SHARED VOTING POWER
 
387,262 shares of Common Stock
  
7
SOLE DISPOSITIVE POWER
 
N/A
  
8
SHARED DISPOSITIVE POWER
 
387,262 shares of Common Stock
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
387,262 shares of Common Stock
  
10
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES
 
[   ]
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
 
5.27% of the outstanding shares of Common Stock
  
12
TYPE OF REPORTING PERSON
 
CO, IA
  
 
CUSIP NO.                          029326105
13G
Page 5 of 9 Pages

1
NAMES OF REPORTING PERSONS
 
Jason A. Stock
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 
 
(a) [   ]
(b) [   ]
3
SEC USE ONLY
 
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
UNITED STATES OF AMERICA
  
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING PERSON WITH
5
SOLE VOTING POWER
 
N/A
  
6
SHARED VOTING POWER
 
387,262 shares of Common Stock
  
7
SOLE DISPOSITIVE POWER
 
N/A
  
8
SHARED DISPOSITIVE POWER
 
387,262 shares of Common Stock
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
387,262 shares of Common Stock
  
10
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES
 
[   ]
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
 
5.27% of the outstanding Common Stock
  
12
TYPE OF REPORTING PERSON
 
IN
  
 
CUSIP NO.                          029326105
13G
Page 6 of 9 Pages

1
NAMES OF REPORTING PERSONS
 
William C. Waller
  
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 
 
(a) [   ]
(b) [   ]
3
SEC USE ONLY
 
  
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
UNITED STATES OF AMERICA
  
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING PERSON WITH
5
SOLE VOTING POWER
 
N/A
  
6
SHARED VOTING POWER
 
387,262 shares of Common Stock
  
7
SOLE DISPOSITIVE POWER
 
N/A
  
8
SHARED DISPOSITIVE POWER
 
387,262 shares of Common Stock
  
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
387,262 shares of Common Stock
  
10
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES
 
[   ]
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
 
5.27% of the outstanding Common Stock
  
12
TYPE OF REPORTING PERSON
 
IN
  
 
Item 1.                           (a)           Name of Issuer:

American River Bankshares (the “Issuer”)

(b) Address of Issuer’s Principal Executive Offices:

3100 Zinfandel Drive
Suite 450
Rancho Cordova, CA 95670

Item 2.                           (a)             Name of Persons Filing:

M3 Funds, LLC
M3 Partners, LP
M3F, Inc.
Jason A. Stock
William C. Waller

(b) Address of Principal Business Office or, if None, Residence:

For all persons filing:

10 Exchange Place, Suite 510
Salt Lake City, UT 84111

(c) Citizenship:

M3 Funds, LLC is a Delaware limited liability company
M3 Partners, LP is a Delaware limited partnership
M3F, Inc. is a Utah corporation
Mr. Stock and Mr. Waller are United States citizens

(d) Title of Class of Securities:

Common Stock

(e) CUSIP Number:

029326105

Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person Filing is a:

Not applicable. Filed pursuant to Rule 13d-1(c).

Item 4. Ownership.

 
M3 Funds,
LLC
M3 Partners,
LP
M3F,
Inc.
Jason A.
Stock
William C.
Waller
(a)   Amount Beneficially Owned:
387,262
387,262
387,262
387,262
387,262
(b)   Percent of Class:
5.27%
5.27%
5.27%
5.27%
5.27%
(c)   Number of Shares to Which Reporting Person Has:
      
       (i)    Sole Voting Power:
N/A
N/A
N/A
N/A
N/A
       (ii)   Shared Voting Power:
387,262
387,262
387,262
387,262
387,262
       (iii)  Sole Dispositive Power:
N/A
N/A
N/A
N/A
N/A
       (iv)  Shared Dispositive Power:
387,262
387,262
387,262
387,262
387,262

The reported shares are the Issuer’s common stock.

All of the reported shares are owned directly by M3 Partners, L.P. (“M3 Partners”), whose general partner is M3 Funds, LLC (the “General Partner”) and whose investment adviser is M3F, Inc. (the “Investment Adviser”). The General Partner and the Investment Adviser could each be deemed to be indirect beneficial owners of the reported shares, and could be deemed to share such beneficial ownership with M3 Partners.

Jason A. Stock and William C. Waller are the managers of the General Partner and the managing directors of the Investment Adviser, and could be deemed to share such indirect beneficial ownership with the General Partner, the Investment Adviser and M3 Partners.

Item 5. Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [   ]

Item 6. Ownership of More than Five Percent on Behalf of Another Person.

Not applicable.

Item 7. Identification and Classification of the Subsidiary That Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

Not applicable.

Item 8. Identification and Classification of Members of the Group.

Not applicable.

Item 9. Notice of Dissolution of Group.

Not applicable.

Item 10. Certification.

By signing below, each of the undersigned certifies that, to the best of his or its knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Exhibits

Exhibit 1

Joint Filing Agreement dated October 29, 2015, among M3 Partners, LP, M3 Funds, LLC, M3F, Inc., Jason A. Stock and William C. Waller.

Signature

After reasonable inquiry and to the best of each of the undersigned’s knowledge and belief, each of the undersigned certifies that the information set forth in this Statement is true, complete and correct.

 
Date: October 29, 2015
   
 
M3 PARTNERS, LP
   
 
By:
M3 Funds, LLC, General Partner
  
       
 
By:
/s/ Jason A. Stock
  
 
Name:
Jason A. Stock
  
 
Title:
Manager
  
       
 
Date: October 29, 2015
  
     
 
M3 FUNDS, LLC
  
       
 
By:
/s/ Jason A. Stock
  
 
Name:
Jason A. Stock
  
 
Title:
Manager
  
       
 
Date: October 29, 2015
  
       
 
M3F, INC.
  
     
 
By:
/s/ Jason A. Stock
  
 
Name:
Jason A. Stock
  
 
Title:
Managing Director
  
       
 
Date: October 29, 2015
  
       
 
/s/ Jason A. Stock
  
 
Jason A. Stock
  
       
 
Date: October 29, 2015
  
       
 
/s/ William C. Waller
  
 
William C. Waller