X0202 4 2006-03-01 0 0000751978 VICOR CORP VICR 0000901484 VINCIARELLI PATRIZIO C/O VICOR CORPORATION 25 FRONTAGE ROAD ANDOVER MA 01810 1 1 1 0 Chairman and CEO Common Stock 2006-03-01 4 S 0 4547 20.04 D 9826007 D Common Stock 2006-03-01 4 S 0 2727 20.05 D 9823280 D Common Stock 2006-03-01 4 S 0 2727 20.07 D 9820553 D Common Stock 2006-03-01 4 S 0 3636 20.1 D 9816917 D Common Stock 2006-03-01 4 S 0 1818 20.2 D 9815099 D Common Stock 2006-03-02 4 S 0 2727 20.25 D 9812372 D Common Stock 2006-03-02 4 S 0 4545 20.43 D 9807827 D Common Stock 2006-03-02 4 S 0 2273 20.45 D 9805554 D This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 30, 2005. /s/Richard J. Nagel, Jr., Attorney in Fact for Patrizio Vinciarelli 2006-03-03