POWER OF ATTORNEY
The undersigned hereby constitutes and appoints Brian F.
Sullivan, Eric O. Madson or Joseph Schauer, or either of them acting
alone, the undersigned's true and lawful attorneys-in-fact and agent
with full power of substitution and resubstitution, for the
undersigned and in the undersigned's name, place and stead, in
any and all capacities, to sign any or all Forms 3, 4 and 5
relating to beneficial ownership of securities of Celcuity Inc.
(the "Issuer"), to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities
and Exchange Commission and to deliver a copy of the same to the Issuer,
granting unto said attorney-in-fact and agent full power and authority to
do and perform each and every act and thing requisite and necessary to be
done in and about the premises, as fully to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and
confirming all said attorneys-in-fact and agent, or his substitute or
substitutes, may lawfully do or cause to be done by virtue thereof. The
undersigned acknowledges that the foregoing attorney-in-fact, in serving
in such capacity at the request of the undersigned, is not assuming any
of the undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934.
This Power of Attorney shall remain in effect until such time as
the undersigned is no longer subject to the provisions of Section 16 of
the Securities Exchange Act or 1934 with respect to securities of the
Issuer.
IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 31st day of August 2017.
/s/ Vicky Hahne
