X0508 4 2026-02-27 0001492422 Apellis Pharmaceuticals, Inc. APLS 0001437590 Dolsten Mikael C/O APELLIS PHARMACEUTICALS, INC. WALTHAM MA 02451 1 0 Common Stock 2026-02-27 4 A 0 14312 0 A 14312 D Stock Option (Right to Buy) 20.96 2026-02-27 4 A 0 24135 20.96 A 2036-02-27 Common Stock 24135 24135 D This restricted stock unit was granted on February 27, 2026. The restricted stock unit will fully vest on the first anniversary of the date of grant, subject to his continued service as a director, or upon later termination of his service as a director at his election. This represents a stock option award granted February 27, 2026 that vest 1/3rd per year over a three-year period subject to continued service. /s/ David Watson, attorney-in-fact for Mikael Dolsten 2026-03-03