Texas Business Organizations Code - BUS ORG § 21.365. Changes in Vote Required for Certain Matters

(a) With respect to a matter for which the affirmative vote of the holders of a specified portion of the shares entitled to vote is required by this code, the certificate of formation of a corporation may provide that the affirmative vote of the holders of a specified portion, but not less than the majority, of the shares entitled to vote on that matter is required for shareholder action on that matter.

(b) With respect to a matter for which the affirmative vote of the holders of a specified portion of the shares of a class or series is required by this code, the certificate of formation may provide that the affirmative vote of the holders of a specified portion, but not less than the majority, of the shares of that class or series is required for action of the holders of shares of that class or series on that matter.

(c) If a provision of the certificate of formation provides that the affirmative vote of the holders of a specified portion that is greater than the majority of the shares entitled to vote on a matter is required for shareholder action on that matter, the provision may not be amended, directly or indirectly, without the same affirmative vote unless otherwise provided by the certificate of formation.

(d) If a provision of the certificate of formation provides that the affirmative vote of the holders of a specified portion that is greater than the majority of the shares of a class or series is required for shareholder action on a matter, the provision may not be amended, directly or indirectly, without the same affirmative vote unless otherwise provided by the certificate of formation.