12 U.S.C. § 2279c: Reconsideration

the merger of districts under this chapter; the merger of banks within a district under section 2279a of this title ; the transfer of the lending authority of a Federal land bank or a merged bank having a Federal land bank as one of its constituents, under section 2279b of this title ; the merger of two or more associations under section 2279c–1 or 2279f–1 of this title; the termination of the status of an institution as a System institution under section 2279d of this title ; or the merger of similar banks under section 2279f of this title ; Not later than 30 days after a stockholder vote in favor of any of the actions described in subsection (a), the officer or employee that records such vote shall ensure that all stockholders of the voting entity receive notice of the final results of the vote. A voluntary merger, transfer, or termination that is approved by a vote of the stockholders of two or more banks or associations shall not take effect until the expiration of 30 days after the date on which the stockholders of such banks or associations are notified of the final result of the vote in accordance with paragraph (1). a voluntary merger, transfer, or termination shall not take effect until the expiration of 60 days after the date on which the stockholders were notified of the final result of the vote; and a special meeting of the stockholders of the affected banks or associations shall be held during the period referred to in subparagraph (A) to reconsider the vote. If a majority of stockholders of any one of the affected banks or associations voting, in person or by written proxy, at a duly authorized stockholders’ meeting, vote against the proposed merger, transfer, or termination, such action shall not take place. If a petition for reconsideration of such vote is either not filed prior to the 60th day after the vote or, if timely filed, is not signed by at least 15 percent of the stockholders, the merger, transfer, or termination shall become effective in accordance with the plan of merger, transfer, or termination.