The purchase or sale of a security of any issuer on the basis of material nonpublic information about that security or issuer in breach of a duty of trust or confidence that is owed directly, indirectly, or derivatively, to the issuer of that security or the shareholders of that issuer, or to any other person who is the source of the material nonpublic information, will be deemed not to violate RCW 21.20.010 if the person making the purchase or sale complies with Rule 10b5-1(c) of the Securities Exchange Act of 1934.