Cal. Bus. & Prof. Code § 5610.7
The board may formulate and enforce rules and regulations to carry out the purposes and objectives of this article, including rules and regulations requiring (a) that the articles of incorporation or bylaws of an architectural corporation shall include a provision whereby the capital stock of the corporation owned by a disqualified person (as defined in the Moscone-Knox Professional Corporation Act), or a deceased person, shall be sold to the corporation or to the remaining shareholders of the corporation within the time as those rules and regulations may provide, and (b) that an architectural corporation shall provide adequate security by insurance or otherwise for claims against it by its clients arising out of the rendering of professional services.
Ca. Bus. and Prof'l. Code § 5610.7