RCW 11.100.090: Dealings with self or affiliate.

Unless the instrument creating the trust expressly provides to the contrary and except as authorized in RCW 11.98.078, any fiduciary in carrying out the obligations of the trust, may not buy or sell investments from or to himself, herself, or itself or any affiliated or subsidiary company or association. This section shall not be construed as prohibiting the trustee's powers under RCW 11.98.070(12).