Corp. Code, § 158

(a) “Close corporation” means a corporation, including a close social purpose corporation, whose articles contain, in addition to the provisions required by Section 202, a provision that all of the corporation’s issued shares of all classes shall be held of record by not more than a specified number of persons, not exceeding 35, and a statement, “This corporation is a close corporation.”

(b) The special provisions referred to in subdivision (a) may be included in the articles by amendment, but if such amendment is adopted after the issuance of shares only by the affirmative vote of all of the issued and outstanding shares of all classes.

(c) The special provisions referred to in subdivision (a) may be deleted from the articles by amendment, or the number of shareholders specified may be changed by amendment, but if such amendment is adopted after the issuance of shares, only by the affirmative vote of at least two-thirds of each class of the outstanding shares; provided, however, that the articles may provide for a lesser vote, but not less than a majority of the outstanding shares, or may deny a vote to any class, or both.

(d) In determining the number of shareholders for the purposes of the provision in the articles authorized by this section, spouses and the personal representative of either shall be counted as one regardless of how shares may be held by either or both of them, a trust or personal representative of a decedent holding shares shall be counted as one regardless of the number of trustees or beneficiaries, and a partnership or corporation or business association holding shares shall be counted as one (except that any such trust or entity the primary purpose of which was the acquisition or voting of the shares shall be counted according to the number of beneficial interests therein).

(e) A corporation shall cease to be a close corporation upon the filing of an amendment to its articles pursuant to subdivision (c) or, if it shall have more than the maximum number of holders of record of its shares specified in its articles as a result of an inter vivos transfer of shares which is not void under subdivision (d) of Section 418, the transfer of shares on distribution by will or pursuant to the laws of descent and distribution, the dissolution of a partnership or corporation or business association, or the termination of a trust which holds shares, by court decree upon dissolution of a marriage or otherwise by operation of law. Promptly upon acquiring more than the specified number of holders of record of its shares, a close corporation shall execute and file an amendment to its articles deleting the special provisions referred to in subdivision (a) and deleting any other provisions not permissible for a corporation which is not a close corporation, which amendment shall be promptly approved and filed by the board and need not be approved by the outstanding shares.

(f) Nothing contained in this section shall invalidate any agreement among the shareholders to vote for the deletion from the articles of the special provisions referred to in subdivision (a) upon the lapse of a specified period of time or upon the occurrence of a certain event or condition or otherwise.

(g) The following sections contain specific references to close corporations: Sections 186, 202, 204, 300, 418, 421, 1111, 1201, 1800, and 1904.