CA Fin Code Section 4887

(a)

After an application for approval of a merger has been approved and all conditions precedent to the merger have been fulfilled, the commissioner shall approve the agreement of merger and endorse the approval on the agreement of merger.

(b)

After the agreement of merger has been filed with the Secretary of State, the surviving depository corporation shall file with the commissioner a copy of the agreement of merger certified by the Secretary of State, and at that time the merger shall become effective for all purposes.