(1) The insurer shall duly assign to the director and his successors in office in trust all securities being deposited through him under this code which are not negotiable by delivery; or, in lieu of such assignment, the insurer may give the director an irrevocable power of attorney authorizing him to transfer the securities or any part thereof for any purpose within the scope of this chapter.
(2) Upon release to the insurer, or other person entitled thereto, of any such security the director shall reassign the same to such insurer or person; or, in the case of power of attorney given pursuant to subsection (1) above, he shall deliver the power of attorney, together with the securities covered thereby, to the insurer or person entitled thereto.