Table of Contents

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

For the quarterly period ended June 30, 2011

OR

For the transition period from              to             

Commission File No. 333-169432

Wolverine Bancorp, Inc.

(Exact name of registrant as specified in its charter)

(989) 631-4280

(Registrant’s telephone number)

N/A

(Former name or former address, if changed since last report)

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 requirements for the past 90 days.    YES  x    NO  ¨.

Indicate by check mark whether the registrant 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 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. (Check one)

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

The number of shares outstanding of the Registrant’s common stock, $0.01 per share, as of August 11, 2011, was 2,507,500.

Table of Contents

Wolverine Bancorp, Inc.

Form 10-Q/A

Table of Contents

Explanatory Note

The following materials from the Wolverine Bancorp, Inc. Form 10-Q for the quarter ended June 30, 2011 formatted in Extensible Business Reporting Language (XBRL): (i) the Condensed Consolidated Statements of Earnings, (ii) the Condensed Consolidated Balance Sheets, (iii) Condensed Consolidated Statements of Cash Flows and (iv) related notes, tagged as blocks of text.

Item 6. Exhibits

1

Table of Contents

SIGNATURES

Pursuant to the requirements 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.

2