SEC Form 4 · accession 0001512868-26-000010

VICOR CORP · VICR

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Philip D Davies

Officer — Corp. VP-Global Sales & Mktg. · Director

Period of report

Jul 1, 2026

Accepted (ET)

Jul 6, 2026 · 11:55 am EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0000751978

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Common Stock	Jul 1, 2026	M	679	$41.61	A	2,599	D
Common Stock	Jul 1, 2026	M	2,394	$30.98	A	4,993	D
Common Stock^F2	Jul 1, 2026	S	173	$348.8351	D	4,820	D
Common Stock^F3	Jul 1, 2026	S	200	$349.52	D	4,620	D
Common Stock^F4	Jul 1, 2026	S	300	$352.45	D	4,320	D
Common Stock^F5	Jul 1, 2026	S	300	$353.3133	D	4,020	D
Common Stock^F6	Jul 1, 2026	S	400	$354.7575	D	3,620	D
Common Stock^F7	Jul 1, 2026	S	400	$357.62	D	3,220	D
Common Stock^F8	Jul 1, 2026	S	300	$358.6233	D	2,920	D
Common Stock^F9	Jul 1, 2026	S	230	$359.8196	D	2,690	D
Common Stock^F10	Jul 1, 2026	S	470	$361.9549	D	2,220	D
Common Stock^F11	Jul 1, 2026	S	200	$364.515	D	2,020	D
Common Stock^F12	Jul 1, 2026	S	100	$366.68	D	1,920	D

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Non Qualified Stock Option^F13,F14	$41.61	Jul 1, 2026	M	679	D	—	—	Common Stock	679	14,679	D
Non Qualified Stock Option^F15	$30.98	Jul 1, 2026	M	2,394	D	—	Sep 6, 2029	Common Stock	2,394	0	D

Explanation of responses

F1This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.
F10The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $361.5000 to $362.3000.
F11The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $364.3400 to $364.6900
F12The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $366.6800 to $366.6800
F13Granted under the Companys Amended and Restated 2000 Stock Option and Incentive Plan on May 2, 2023 and vest over a five year period.
F14Options expire two years from each vest date.
F15Granted under the Companys Amended and Restated 2000 Stock Option and Incentive Plan on September 6, 2019 and vest over a five year period.
F2The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $348.4300 to $349.3900.
F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $349.4900 to $349.5500.
F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $352.2000 to $352.7300.
F5The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $353.2200 to $353.3600.
F6The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $354.4800 to $355.3300.
F7The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $357.2200 to $357.9800.
F8The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $358.4300 to $358.7400.
F9The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $359.4500 to $360.3000.