144 0000901484 XXXXXXXX LIVE 0000751978 VICOR CORP 000-18277 25 FRONTAGE ROAD ANDOVER MA 01810 (978) 470-2900 VINCIARELLI PATRIZIO Officer Director 10% Stockholder Common Raymond James & Associates

880 Carillon Parkway St. Petersburg FL 33716

4000 1092343.20 33646426 04/24/2026 NASDAQ Common 12/05/2017 Purchase Open market N 31509 12/05/2017 money market N Patrizio Vinciarelli

25 FRONTAGE ROAD Andover MA 01810

Vicor Corporation 04/24/2026 4000 1092343.00 04/24/2026 Rashida Mitchell, as duly authorized representative of Raymond James & Associates, Inc., as attorney-in-fact for Patrizio Vinciarelli