Wyo. Stat. § 13-4-114: Changing of state to national bank.

(a) A bank may merge with, convert into or reorganize as a national bank. The action to be taken by a merging or converting bank and its rights and liabilities and those of its stockholders shall be the same as those prescribed for national banks except that a vote of the holders of two-thirds (2/3) of each class of voting stock of a state bank is required for the merger or conversion. On conversion, the rights of dissenting stockholders shall be those specified in W.S. 13-4-110.

(b) Upon the completion of the merger or conversion, the franchise of any merging or converting state bank automatically terminates.