Okla. Stat. tit. 60, § 175.19
A trustee who has incurred personal liability for a tort committed in the administration of the trust is entitled to exoneration therefor from the trust property;
A. If he has not discharged the claim, or to be reimbursed therefor out of trust funds if he has paid the claim; if
B. If a trustee commits a tort which increases the value of the trust property, he shall be entitled to exoneration or reimbursement with respect thereto to the extent of such increase in value, even though he would not otherwise be entitled to exoneration or reimbursement.
Where the trust instrument reserves to the trustor or vests in an advisory or investment committee or any other person, including a cotrustee, authority to direct the making or retention of investments, the excluded trustee or trustees shall not be liable as a trustee for any loss resulting from the making or retention of any investment pursuant to such mandatory direction, except to the extent the excluded trustee is negligent in carrying out the execution of the directed investment or other directed action, and nothing herein shall relieve any trustee having custody of any asset from liability for exercising due diligence in the safekeeping thereof.
Laws 1941, HB 174, p. 254, § 19; Amended by Laws 1968, HB 759, c. 15, § 4, emerg. eff. February 19, 1968.