N.Y. Comp. Codes R. & Regs. tit. 3, § 306.2
(a) Unless the superintendent, in his/her discretion provides otherwise, an institution described in section 306.1 of this Part is permitted to have vacancies of up to one-third of its entire board of directors left unfilled until the next annual election by the stockholders provided that the institution:
(b) Unless the superintendent, in his/her discretion provides otherwise, an institution described in section 306.1 of this Part is permitted to have vacancies of up to one-tenth of its entire board of directors left unfilled until the next annual election by the stockholders, or where a board of directors is comprised of less than ten members, no more than one vacancy on the board may be left unfilled until the next annual election by the stockholders provided that the institution: