Michigan Compiled Laws, Chapter 450. Corporations § 450.1344

Sec. 344. (1) Subject to restrictions imposed by this act or the articles of incorporation, a corporation may acquire its own shares and those shares constitute authorized but unissued shares, except as provided in subsection (4).

(2) If the articles of incorporation prohibit reissue of any shares acquired pursuant to subsection (1), the board, by resolution, shall adopt and file an amendment of the articles of incorporation reducing the number of authorized shares accordingly.

(3) A corporation shall not acquire its own shares by purchase, redemption, or otherwise unless after the acquisition there remain outstanding shares possessing, collectively, voting rights and unlimited rights to receive assets in dissolution.

(4) A corporation that acquires its own shares may grant a security interest in the shares as security for the payment of the purchase price of the shares. Any shares acquired by the corporation in which it has granted a security interest are not canceled and do not constitute authorized but unissued shares until the corporation pays the purchase price. If the corporation has granted a security interest in the shares, the shares shall not be voted directly or indirectly and shall not be counted in determining the total number of issued shares entitled to vote at any given time, except to the extent provided by the agreement creating the security interest in the event of default. Upon payment of the purchase price, the shares shall be canceled and constitute authorized but unissued shares. If the articles of incorporation prohibit reissue of canceled shares, then the amendment required by subsection (2) shall be filed.