N.Y. Comp. Codes R. & Regs. tit. 13, § 10.4
(a) Every salesperson of securities employed by a non-FINRA member firm, and who has already filed a salesperson's statement or a Form U4 with the Department of Law of the State of New York, shall file a Form M-4, supplemental salesperson's statement, whenever any of the following changes have taken place to indicate the change of information originally filed: