UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K/A

Amendment No. 2

For the fiscal year ended December 31, 2011

OR

For the transition period from                     to                    

Commission file number: 0-25196

CAMCO FINANCIAL CORPORATION

(Exact name of registrant as specified in its charter)

814 Wheeling Avenue, Cambridge, Ohio 43725

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (740) 435-2020

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

(Title of class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ¨    No  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes  x    No  ¨

Indicate by check mark whether the registrant (1) has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.     ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).     Yes  ¨    No  x

The aggregate market value of the voting stock held by non-affiliates of the registrant, computed by reference to the last sale reported as of June 30, 2011, was $13.0 million. There were 7,205,595 shares of the registrant’s common stock outstanding on March 12, 2012.

DOCUMENTS INCORPORATED BY REFERENCE:

None.

EXPLANATORY NOTE

We are filing this Amendment to our Form 10-K for the fiscal year ended December 31, 2011 to amend the exhibits listing to include Exhibit 10(xxxi) 2010 Salary Continuation Agreement. Except as described above, the remainder of the Form 10-K is unchanged and does not reflect events occurring after the original filing of the Form 10-K on March 30, 2012.

PART IV

Item 15. Exhibits and Financial Statement Schedules.

2

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

INDEX TO EXHIBITS

INDEX TO EXHIBITS (continued)

INDEX TO EXHIBITS (continued)