X0508 4 2026-02-18 0001347178 Vanda Pharmaceuticals Inc. VNDA 0001355537 Polymeropoulos Mihael Hristos 2200 PENNSYLVANIA AVENUE NW SUITE 300E WASHINGTON DC 20037 true true false true President and CEO Chairman of the Board false Common Stock 2026-02-18 4 A false 525000 0 A 2860731 D Represents shares of common stock underlying a time-based restricted stock unit award ("RSU"). The RSU vests in four (4) equal annual installments with the first annual vest taking place on March 1, 2027, provided the Reporting Person remains continuously employed by the Issuer through each annual vesting date. Vested shares will be delivered on the First Permissible Trading Day (as defined in the RSU Agreement) that occurs on or after the day when the RSUs vest. /s/ Mihael H. Polymeropoulos 2026-02-19