N.C. Gen. Stat. § 47-9
No acknowledgment or proof of execution of any mortgage or deed of trust executed to secure the payment of any indebtedness to any building and loan association shall hereafter be held invalid by reason of the fact that the officer taking such acknowledgment or proof is a stockholder in said building and loan association. This section does not authorize any officer or director of a building and loan association to take acknowledgments or proofs. The provisions of this section shall apply to federal savings and loan associations having their principal offices in this State. Acknowledgments and proofs of execution, including private examinations of any married woman taken before March 20, 1939, by an officer who is or was a stockholder in any federal savings and loan association, are hereby validated.
N.C. Gen. Stat. § 47-9