Okla. Stat. tit. 18, § 18-911: Amendment of articles of incorporation

No amendment to the certificate of incorporation shall be made

which increases the obligation of a member to make loans to the

corporation or which makes any change in the principal amount,

interest rate, maturity date, or in the security or credit position

of any outstanding loan made by a member to the corporation or which

affects the right of a member to withdraw from membership or the

voting rights of such member, without the consent of each member who

would be affected by such amendment.