BSRR Sierra Bancorp

CUSIP No. 82620P102


1 NAME OF REPORTING PERSON
 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (OPTIONAL)

 Banc Fund VI L.P.



2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) / /
 (b) /x/

3 SEC USE ONLY



4 CITIZENSHIP OR PLACE OF ORGANIZATION

 U.S.

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5 SOLE VOTING POWER

 303,550

6 SHARED VOTING POWER

 0

7 SOLE DISPOSITIVE POWER

 303,550

8 SHARED DISPOSITIVE POWER

 0

9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 303,550


10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
 /X/

11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 2.2%

12 TYPE OF REPORTING PERSON*

 PN


 SCHEDULE 13G/A

CUSIP No. 82620P102

1 NAME OF REPORTING PERSON
 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

 Banc Fund VII L.P.

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) / /
 (b) /x/


3 SEC USE ONLY



4 CITIZENSHIP OR PLACE OF ORGANIZATION

 U.S.

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH


5 SOLE VOTING POWER

 294,680

6 SHARED VOTING POWER

 0

7 SOLE DISPOSITIVE POWER

 294,680

8 SHARED DISPOSITIVE POWER

 0

9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 294,680

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
 /X/

11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 2.1%

12 TYPE OF REPORTING PERSON*

 PN

CUSIP No. 82620P102

1 NAME OF REPORTING PERSON
 S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

 Banc Fund VIII L.P.

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) / /
 (b) /x/


3 SEC USE ONLY



4 CITIZENSHIP OR PLACE OF ORGANIZATION

 U.S.

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH


5 SOLE VOTING POWER

 307,017

6 SHARED VOTING POWER

 0

7 SOLE DISPOSITIVE POWER

 307,017

8 SHARED DISPOSITIVE POWER

 0

9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 307,017

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
 /X/

11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 2.2%

12 TYPE OF REPORTING PERSON*

 PN


Item 1 (a) Name of Issuer: SIERRA BANCORP

Item 1 (b) Address of Issuer's Principal Executive Offices:

 86 North Main Street, Porterville, CA 93257


Item 2 (a) Name of Person Filing:

 This Schedule 13G/A is being filed jointly by Banc Fund VI L.P.
("BF VI"), an Illinois Limited Partnership, Banc Fund VII L.P. ("BF VII"), an
Illinois Limited Partnership, and Banc Fund VIII L.P. ("BF VIII"), an Illinois
Limited Partnership, (collectively, the "Reporting Persons"). The general
partner of BF VI is MidBanc VI L.P. ("MidBanc VI"), whose principal business is
to be a general partner of BF VI. The general partner of BF VII is MidBanc VII
L.P. ("MidBanc VII"), whose principal business is to be a general partner of
BF VII. The general partner of BF VIII is MidBanc VIII L.P. ("MidBanc VIII"),
whose principal business is to be a general partner of BF VIII. MidBanc VI,
MidBanc VII, and MidBanc VIII are Illinois limited partnerships. The general
partner of MidBanc VI, MidBanc VII, and MidBanc VIII is The Banc Funds Company,
L.L.C., ("TBFC"), whose principal business is to be a general partner of MidBanc
VI, MidBanc VII, and MidBanc VIII. TBFC is an Illinois corporation whose
principal shareholder is Charles J. Moore. Mr. Moore has been the manager
of BF VI, BF VII, and BF VIII, since their respective inceptions. As manager,
Mr. Moore has voting and dispositive power over the securities of the issuer
held by each of those entities. As the controlling member of TBFC, Mr. Moore
will control TBFC, and therefore each of the Partnership entities directly and
indirectly controlled by TBFC.


Item 2 (b) Address of Principal Business Office:

 20 North Wacker Drive, Suite 3300, Chicago, IL 60606


Item 2 (c) Citizenship: United States

Item 2 (d) Title of Class of Securities: Common Stock


Item 2 (e) CUSIP Number: 82620P102


Item 3 If this statement is being filed pursuant to Rule 13d-1(b)or
 13d-2(b), check whether the person filing is an:

(a)[ ] Broker or Dealer registered under Section 15 of the Act
(b)[ ] Bank as defined in section 3(a)(6) of the Act (c)[ ] Insurance Company
 as defined in section 3(a)(19) of the Act (d)[ ] Investment Company
 registered under section 8 of the Investment Company Act of 1940
(e)[ ] An Investment Adviser in accordance with Rule 13d-1(b)(1)(ii)(E)
(f)[ ] An Employee Benefit Plan or Endowment Fund in accordance with Rule
 13d-1(b)(1)(ii)(F)
(g)[ ] A Parent Holding Company or Control Person in accordance with Rule 13d-1
 (b)(ii)(G)
(h)[ ] A Savings Association as defined in Section 3(b) of the Federal Deposit
 Insurance Act
(i)[ ] A Church Plan that is excluded From the definition of an investment
 company under Section 3(c)(14)of the Investment Company Act of 1940
(j)[ ] Group, in accordance with 13d-1(b)(1)(ii)(J)

Item 4 Ownership:

The following information is provided as of February 3, 2012 for the calendar
year ending December 31, 2011:

(a) Amount Beneficially Owned: 905,247
(b) Percent of Class: 6.5%

(c) Number of shares as to which such person has:

(i) sole power to vote or to direct the vote: 905,247
(ii) shared power to vote or to direct the vote: 0
(iii) sole power to dispose or to direct the disposition of: 905,247
(iv) shared power to dispose or to direct the disposition of: 0



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 Which Acquired the
 Security Being Reported on by the Parent Holding Company:

 Not Applicable.

Item 8 Identification and Classification of Members of the Group:

 Not Applicable.

Item 9 Notice of Dissolution of Group:

 Not Applicable.