SU Group Holdings Ltd

PROXY

for the Extraordinary General Meeting of Members (the “Extraordinary Meeting”) to be held on 25 June 2026, at 10 a.m. Hong Kong Time (24 June 2026, at 10 p.m. Eastern Time), at 7/F, The Rays, No. 71 Hung To Road, Kwun Tong, Kowloon, Hong Kong.

The undersigned hereby acknowledges receipt of the notice of an Extraordinary Meeting dated 9 June 2026, Hong Kong Time (8 June 2026, Eastern Time), and appoints the chairman of the Extraordinary Meeting* or _______________________________________________________________________ of ____________________________________________________________________________________, with full power of substitution, to act as proxy for the undersigned and authorizes such person to represent and vote all of the shares of the Company that the undersigned is entitled to vote at the Extraordinary Meeting, and any adjournment or postponement thereof, with respect to all of the matters set forth below, and with discretionary authority as to any other matters that may properly come before the Extraordinary Meeting or any adjournment or postponement thereof.

This proxy card must be signed by the person registered in the register of members of the Company at the close of business on 4 June 2026, Hong Kong Time (3 June 2026, Eastern Time) (the “Record Date”). In the case of a corporation, this Proxy Card must be executed by a duly authorized officer or attorney.