X0508 4 2026-01-07 0 0001390478 SELLAS Life Sciences Group, Inc. SLS 0001416176 Varian John C/O SELLAS LIFE SCIENCES GROUP, INC., 7 TIMES SQUARE, SUITE 2503 NEW YORK NY 10036 1 0 0 0 0 Common Stock 2026-01-07 4 A 0 50000 0.00 A 72900 D The Reporting Person received an award of 50,000 restricted stock units on January 7, 2026, which shall vest in full on December 1, 2026, subject to the Reporting Person's continued service on the Issuer's Board of Directors through such date. /s/ Daniel Bagliebter, Power of Attorney for: John Varian 2026-01-09