X0508 4 2025-01-08 0001492422 Apellis Pharmaceuticals, Inc. APLS 0002051489 Walbert Keli C/O APELLIS PHARMACEUTICALS, INC. 100 FIFTH AVENUE, 3RD FLOOR WALTHAM MA 02451 1 0 Common Stock 2025-01-08 4 A 0 9090 0 A 9090 D Stock Option (Right to Buy) 33.00 2025-01-08 4 A 0 15388 33.00 A 2032-01-08 Common Stock 15388 15388 D This restricted stock unit was granted on January 8, 2025. The restricted stock unit will fully vest on the first anniversary of the date of grant, subject to her continued service as a director, or upon later termination of her service as a director at her election. This represents a stock option award granted January 8, 2025 that vest 1/3rd per year over a three-year period subject to continued service. /s/ David Watson, attorney-in-fact for Keli Walbert 2025-01-10