X0508 4 2026-02-25 0000078003 PFIZER INC PFE 0001988687 BOSHOFF CHRISTOFFEL 66 HUDSON BOULEVARD EAST ATTN: CORPORATE SECRETARY NEW YORK NY 10001-2192 1 President, R&D 0 Common Stock 2026-02-25 4 A 0 13383.0000 0.0000 A 168212.0000 D Common Stock 2026-02-25 4 F 0 6833.0000 27.0900 D 161379.0000 D Common Stock 709.0000 I By Rule 16b-3 Plan The reported transaction constitutes the earn-out of performance share awards (including dividend equivalents thereon). The reported transaction constitutes the withholding of shares to satisfy tax obligations upon the earn-out of performance share awards (including dividend equivalents thereon). /s/ Shanice A. Reid, by power of atty, for Christoffel Boshoff 2026-02-27