X0508 4/A 2025-02-01 2025-02-04 0001557746 Aclaris Therapeutics, Inc. ACRS 0001781549 Loerop James C/O ACLARIS THERAPEUTICS, INC. 701 LEE ROAD, SUITE 103 WAYNE PA 19087 false true false false Chief Business Officer 0 Common Stock 2025-02-01 4 F 0 15980 2.48 D 102773 D The transaction reported represents the withholding of shares by the issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of restricted stock units described in this Form 4. This amendment is being filed to correct the number of shares that were withheld by the issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of restricted stock units previously reported. This adjustment will affect the amount of securities beneficially owned following the reported transaction in subsequent filings. /s/ Matthew Rothman, Attorney-in-Fact 2026-02-03