Okla. Stat. tit. 18, § 1046
Unless otherwise provided for by the terms of the subscription, a subscription for stock of a corporation to be formed shall be irrevocable, except with the consent of all other subscribers or the corporation, for a period of six (6) months from its date.
Laws 1986, HB 1979, c. 292, § 46, eff. November 1, 1986.