X0609 4 2026-08-20 0000751978 VICOR CORP VICR 0001195966 ANDERSON SAMUEL J false 25 FRONTAGE ROAD ANDOVER MA 01810 true false false false false Common Stock 2026-08-20 4 M false 331 60.3700 A 4365 D Common Stock 2026-08-20 4 M false 754 53.0700 A 5119 D Common Stock 2026-08-20 4 M false 908 44.0700 A 6027 D Common Stock 2026-08-20 4 M false 200 100.0000 A 6227 D Common Stock 2026-08-20 4 M false 1216 32.8900 A 7443 D Non Qualified Stock Option 60.3700 2026-08-20 4 M false 331 0 D 2026-06-24 2032-06-24 Common Stock 331 331 D Non Qualified Stock Option 53.0700 2026-08-20 4 M false 754 0 D 2026-06-23 2033-06-23 Common Stock 754 1507 D Non Qualified Stock Option 44.0700 2026-08-20 4 M false 908 0 D 2026-06-20 2035-06-20 Common Stock 908 3631 D Non Qualified Stock Option 100.0000 2026-08-20 4 M false 200 0 D 2026-06-25 2031-06-25 Common Stock 200 0 D Non Qualified Stock Option 32.8900 2026-08-20 4 M false 1216 0 D 2026-06-21 2034-06-21 Common Stock 1216 3648 D /s/Quentin A. Fendelet Attorney in Fact for Samuel J. Anderson 2026-08-24