X0508 4 2026-01-13 0001781174 Acrivon Therapeutics, Inc. ACRV 0001950573 Devroe Eric C/O ACRIVON THERAPEUTICS, INC. 480 ARSENAL WAY, SUITE 100 WATERTOWN MA 02472 true Chief Operating Officer false Common Stock 2026-01-13 4 P 0 10000 1.7218 A 75308 D The price reported in Column 4 above reflects the weighted average purchase price. This transaction was executed in multiple trades at prices ranging from $1.719 to $1.7268, inclusive. The reporting person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares purchased at each respective price within the range set forth in footnote 1 of this Form 4. /s/ Adam D. Levy, Attorney-in-Fact 2026-01-15