Okla. Stat. tit. 60, § 175.13
No corporate trustee shall purchase for a trust, shares of its own stock, or its bonds, or other securities, or the stock, bonds or other securites of an affiliate.
(2) shares of its own stock held by a bank and one or more persons as trustees may be voted by such other person or persons, as trustees, in the same manner as if he or they were the sole trustee.
No noncorporate trustee shall purchase for a trust the stock, bonds, or other securities of a corporation with which he is connected as director, owner, manager, or in executive capacity.
This section shall not prohibit the exercise of stock rights issued in connection with shares of the trustee bank or its affiliates owned in a fiduciary capacity, nor payments for the rounding out of fractional shares received in connection with the stock dividends issued by the trustee bank or its affiliates; provided that,
Laws 1941, HB 174, p. 252, § 13; Amended by Laws 1968, HB 759, c. 15, § 3, emerg. eff. February 19, 1968.