N.Y. Uniform Commercial Code Law § 3-403 (2026)

Section 3--403. Signature by Authorized Representative.
  (1) A signature may be made by an agent or other representative, and
his authority to make it may be established as in other cases of
representation. No particular form of appointment is necessary to
establish such authority.
  (2) An authorized representative who signs his own name to an
instrument
       (a) is personally obligated if the instrument neither names the
           person represented nor shows that the representative signed
           in a representative capacity;
       (b) except as otherwise established between the immediate
           parties, is personally obligated if the instrument names the
           person represented but does not show that the representative
           signed in a representative capacity, or if the instrument
           does not name the person represented but does show that the
           representative signed in a representative capacity.
  (3) Except as otherwise established the name of an organization
preceded or followed by the name and office of an authorized individual
is a signature made in a representative capacity.