Corp. Code, § 3000

(a) A proposed amendment to the articles of a social purpose corporation shall be approved by the outstanding shares of a class, regardless of whether that class is entitled to vote thereon by the provisions of the articles, if the amendment would:

(1) Increase or decrease the aggregate number of authorized shares of that class, other than an increase as provided in either subdivision (b) of Section 405 or subdivision (b) of Section 902.

(2) Effect an exchange, reclassification, or cancellation of all or part of the shares of that class, including a reverse stock split but excluding a stock split.

(3) Effect an exchange, or create a right of exchange, of all or part of the shares of another class into the shares of that class.

(4) Change the rights, preferences, privileges, or restrictions of the shares of that class.

(5) Create a new class of shares having rights, preferences, or privileges prior to the shares of that class, or increase the rights, preferences, or privileges or the number of authorized shares of any class having rights, preferences, or privileges prior to the shares of that class.

(6) In the case of preferred shares, divide the shares of any class into series having different rights, preferences, privileges, or restrictions or authorize the board to do so.

(7) Cancel or otherwise affect dividends on the shares of that class that have accrued but have not been paid.

(b) A proposed amendment shall be approved by an affirmative vote of at least two-thirds of the outstanding shares of each class, or a greater vote if required in the articles, regardless of whether that class is entitled to vote thereon by the provisions of the articles, if the amendment would materially alter any special purpose of the social purpose corporation stated in the articles pursuant to paragraph (2) of subdivision (b) of Section 2602, regardless of whether that purpose, as amended, would comply with the provisions of that paragraph.

(c) Different series of the same class shall not constitute different classes for the purpose of voting by classes except when a series is adversely affected by an amendment in a different manner than other shares of the same class.

(d) In addition to approval by a class as provided in subdivisions (a) and (b), a proposed amendment shall also be approved by the outstanding voting shares (Section 152).