Fin. Code, § 14953

(a) Any extension of credit in excess of the unsecured loan limit set by the board of directors pursuant to Section 15100 shall be secured either (1) by real or personal property to the extent that the extension of credit exceeds such limit, or (2) in the manner provided in Section 14955.

(b) If the security offered is an endorsed note as provided in subdivision (a) of Section 14955, a signed and dated financial statement shall be taken from each person who endorses the note and the sufficiency of the financial responsibility of every such endorser shall be verified by a majority of the credit committee. Obligations secured by the signatures of a borrower and endorser or endorsers shall not exceed the amount that may be extended to the borrower without security pursuant to Section 15100, plus an equivalent amount for each endorser; plus the amount of shares or certificates for funds pledged to secure the obligation.