Cal. Pub. Cont. Code § 22014

(a) The members of the commission shall hold office for terms of three years, and until their successors are appointed.
(b) Members may be reappointed, by the Controller, for subsequent terms of three years.
(c) The Controller may appoint a successor for any commissioner after his or her three-year term expires.
(d) The Controller shall, within 120 days, appoint a replacement to fill any vacancy on the commission.