(1) A trustee of a savings bank shall not, except to the extent permitted for a director of a federal mutual savings bank:
(a) Have any interest, direct or indirect, in the gains or profits of the savings bank, except to receive dividends (i) upon the amounts contributed by him or her to the guaranty fund and the expense fund of the savings bank as provided in RCW
32.08.090 and
32.08.100, and (ii) upon any deposit he or she may have in the bank, the same as any other depositor and under the same regulations and conditions.
(b) Become a member of the board of directors of a bank, trust company, or national banking association of which board enough other trustees of the savings bank are members to constitute with him a majority of the board of trustees.
(2) Neither a trustee nor an officer of a savings bank shall, except to the extent permitted for a director or officer of a federal mutual savings bank:
(a) For himself or herself or as agent or partner of another, directly or indirectly use any of the funds or deposits held by the savings bank, except to make such current and necessary payments as are authorized by the board of trustees.
(b) Receive directly or indirectly and retain for his or her own use any commission on or benefit from any loan made by the savings bank, or any pay or emolument for services rendered to any borrower from the savings bank in connection with such loan, except as authorized by RCW
32.16.050.
(c) Become an indorser, surety, or guarantor, or in any manner an obligor, for any loan made by the savings bank.
(d) For himself or herself or as agent or partner of another, directly or indirectly borrow any of the funds or deposits held by the savings bank, or become the owner of real property upon which the savings bank holds a mortgage. A loan to or a purchase by a corporation in which he or she is a stockholder to the amount of fifteen percent of the total outstanding stock, or in which he or she and other trustees of the savings bank hold stock to the amount of twenty-five percent of the total outstanding stock, shall be deemed a loan to or a purchase by such trustee within the meaning of this section, except when the loan to or purchase by such corporation occurred without his or her knowledge or against his or her protest. A deposit in a bank shall not be deemed a loan within the meaning of this section.