X0202 4 2006-02-15 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 2006-02-15 4 S 0 3297 18.5 D 9902257 D Common Stock 2006-02-15 4 S 0 2418 18.51 D 9899839 D Common Stock 2006-02-15 4 S 0 1618 18.52 D 9898221 D Common Stock 2006-02-15 4 S 0 91 18.53 D 9898130 D Common Stock 2006-02-15 4 S 0 91 18.54 D 9898039 D Common Stock 2006-02-15 4 S 0 91 18.55 D 9897948 D Common Stock 2006-02-15 4 S 0 4 18.56 D 9897944 D Common Stock 2006-02-15 4 S 0 442 18.57 D 9897502 D Common Stock 2006-02-16 4 S 0 895 18.5 D 9896607 D Common Stock 2006-02-16 4 S 0 818 18.52 D 9895789 D Common Stock 2006-02-16 4 S 0 1818 18.53 D 9893971 D Common Stock 2006-02-16 4 S 0 3177 18.55 D 9890795 D Common Stock 2006-02-16 4 S 0 636 18.56 D 9890159 D Common Stock 2006-02-16 4 S 0 182 18.57 D 9889977 D Common Stock 2006-02-16 4 S 0 948 18.59 D 9889029 D Common Stock 2006-02-16 4 S 0 3105 18.6 D 9885924 D Common Stock 2006-02-16 4 S 0 636 18.61 D 9885288 D Common Stock 2006-02-16 4 S 0 2364 18.62 D 9882924 D Common Stock 2006-02-16 4 S 0 1909 18.63 D 9881015 D Common Stock 2006-02-16 4 S 0 455 18.64 D 9880560 D Common Stock 2006-02-16 4 S 0 5 18.65 D 9880554 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 2006-02-17