X0508 4 2026-02-15 0 0001125345 MACROGENICS INC MGNX 0001587514 Koenig Scott 9704 MEDICAL CENTER DRIVE ROCKVILLE MD 20850 1 0 0 0 0 Common Stock 2026-02-15 4 M 0 21165 0 A 867240 D Restricted Stock Unit 0 2026-02-15 4 M 0 21165 0 D Common Stock 21165 0 D On February 15, 2023, the reporting person was granted 127,000 restricted stock units. Eighty-four thousand, six hundred seventy (84,670) were vested prior to the reporting person's separation from the company and 21,165 units vested upon his separation on August 13, 2025 in accordance with his Separation Agreement. Each restricted stock unit (RSU) represents a contingent right to receive one share of the Issuer's common stock. /s/ Beth A. Smith, Attorney-in-fact 2026-02-17