Cal. PROB § 9655

With respect to a share of stock of a domestic or foreign corporation held in the estate, a membership in a nonprofit corporation held in the estate, or other property held in the estate, a personal representative may do any one or more of the following: (a) Vote in person, and give proxies to exercise, any voting rights with respect to the share, membership, or other property. (b) Waive notice of a meeting or give consent to the holding of a meeting. (c) Authorize, ratify, approve, or confirm any action which could be taken by shareholders, members, or property owners.