Texas Business Organizations Code - BUS ORG § 251.202. Transfer of Shares and Membership;  Withdrawal

(a) A member who decides to withdraw from a cooperative association shall make a written offer to sell the member's membership certificates to the cooperative association's board of directors.

(b) Not later than the 90th day after the date the directors receive an offer under Subsection (a), the directors may cause the cooperative association to purchase the holdings by paying the member the par value of the certificates and the directors shall cause the cooperative association to reissue or cancel the shares after purchasing the holdings.  The directors shall cause the cooperative association to purchase the shares if a majority of the cooperative association's members voting at a regular or special meeting vote to require the purchase.

(c) An investor owning investor certificates must sell, assign, or convey the certificates in accordance with the cooperative association's bylaws.  If an investor fails to sell, assign, or convey investor certificates in accordance with the bylaws, the cooperative association on written notice to its directors shall repurchase the certificates by paying the investor the par value of the certificate plus all accrued investment dividends.  The certificates must be repurchased not later than the 90th day after the date the cooperative association receives notice of the failure.