X0508 4 2025-06-12 0001326732 Xencor Inc XNCR 0001201096 GORMAN KEVIN CHARLES C/O XENCOR, INC. 465 N HALSTEAD STREET, SUITE 200 PASADENA CA 91107 1 1 Common Stock 2025-06-12 4 A 0 13686 0 A 22078 D Common Stock 2025-06-16 4 S 0 3173 9.22 D 18905 D Stock Option (Right to Buy) 9.43 2025-06-12 4 A 0 27372 0 A 2035-06-11 Common Stock 27372 27372 D Represents restricted stock units that shall fully vest on the first anniversary of the date of grant. This transaction is pursuant to a 10b5-1 plan adopted by the Reporting Person on June 28, 2024. The shares subject to the option will vest in equal monthly installments over one year beginning on the one-month anniversary of June 12, 2025, such that the total number of shares will be fully vested on June 12, 2026. /s/ Celia E. Eckert, Attorney-in-Fact 2025-06-16