X0609 4 2026-08-27 0 0001787306 Arcutis Biotherapeutics, Inc. ARQT 0001690298 Curran Terrie false C/O ARCUTIS BIOTHERAPEUTICS, INC. 3027 TOWNSGATE ROAD, SUITE 300 WESTLAKE VILLAGE CA 91361 1 0 0 0 0 Common Stock 2026-08-27 4 M 0 11148 7.51 A 34674 D Common Stock 2026-08-27 4 S 0 11148 25.0294 D 23526 D Common Stock 2026-08-27 4 M 0 27052 8.63 A 50578 D Common Stock 2026-08-27 4 S 0 27052 25.0294 D 23526 D Stock Option (right to buy) 7.51 2026-08-27 4 M 0 11148 0 D 2033-05-31 Common Stock 11148 0 D Stock Option (right to buy) 8.63 2026-08-27 4 M 0 27052 0 D 2034-06-14 Common Stock 27052 0 D The underlying shares subject to the option vest and become exercisable as to 100% on the first anniversary of May 31, 2023, subject to the non-employee director's continuous service. The price reported in Column 4 is a weighted average sale price. The shares were sold in multiple transactions at prices ranging from $25.00 to $25.1001 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 sold at each respective price within the range set forth in this footnote. The underlying shares subject to the option vest and become exercisable as to 100% on the first anniversary of June 14, 2024, subject to the non-employee director's continuous service. The option is fully vested. /s/ Latha Vairavan, as Attorney-in-Fact for Terrie Curran 2026-08-28