Okla. Stat. tit. 12A, § 12A-8-205: Effect of Unauthorized Signature on Security

Certificate.

Effect of Unauthorized Signature on Security Certificate.

An unauthorized signature placed on a security certificate

before or in the course of issue is ineffective, but the signature

is effective in favor of a purchaser for value of the certificated

security if the purchaser is without notice of the lack of authority

and the signing has been done by:

(1) an authenticating trustee, registrar, transfer agent,

or other person entrusted by the issuer with the

signing of the security certificate or of similar

security certificates, or the immediate preparation

for signing of any of them; or

(2) an employee of the issuer, or of any of the persons

listed in paragraph (1) of this subsection, entrusted

with responsible handling of the security certificate.