X0609 4 2026-05-18 0001781174 Acrivon Therapeutics, Inc. ACRV 0002022214 Peterson Katharine false C/O ACRIVON THERAPEUTICS, INC. 480 ARSENAL WAY, SUITE 100 WATERTOWN MA 02472 false true false false Chief Accounting Officer false Common Stock 2026-05-18 4 A false 14227 0 A 18134 D These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. Of these RSUs, 16.67% of the RSUs shall vest on November 18, 2026, and the remaining RSUs shall vest in 10 substantially equal quarterly installments thereafter, in each case subject to the Reporting Person's continuous service through each such vesting date. /s/ Adam D. Levy, Attorney-in-Fact 2026-05-20