SEC Form 4 · accession 0001193125-26-295939

VICOR CORP · VICR

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

Reporting owner

Patrizio Vinciarelli

Officer — Chairman & CEO · Director · 10% Owner

Period of report

Jul 2, 2026

Accepted (ET)

Jul 6, 2026 · 1:12 pm 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	Nature of ownership
Common Stock^F3	Jul 2, 2026	S	1,353	$309.1498	D	8,366,737	D
Common Stock^F4	Jul 2, 2026	S	2,071	$310.1304	D	8,364,666	D
Common Stock^F5	Jul 2, 2026	S	4,184	$310.8178	D	8,360,482	D
Common Stock^F6	Jul 2, 2026	S	3,992	$311.9897	D	8,356,490	D
Common Stock^F7	Jul 2, 2026	S	500	$313.0525	D	8,355,990	D
Common Stock^F8	Jul 2, 2026	S	1,300	$314.6885	D	8,354,690	D
Common Stock^F9	Jul 2, 2026	S	400	$315.285	D	8,354,290	D
Common Stock^F10	Jul 2, 2026	S	200	$318.855	D	8,354,090	D
Common Stock^F11	Jul 2, 2026	S	200	$321.0438	D	8,353,890	D
Common Stock^F12	Jul 2, 2026	S	600	$323.0167	D	8,353,290	D
Common Stock^F13	Jul 2, 2026	S	200	$324.205	D	8,353,090	D
Common Stock^F14	Jul 2, 2026	S	600	$328.2933	D	8,352,490	D
Common Stock^F15	Jul 2, 2026	S	240	$331.4998	D	8,352,250	D
Common Stock^F16	Jul 2, 2026	S	960	$332.9941	D	8,351,290	D
Common Stock^F17	Jul 2, 2026	S	500	$334.402	D	8,350,790	D
Common Stock^F18	Jul 2, 2026	S	200	$335.4021	D	8,350,590	D
Common Stock^F19	Jul 2, 2026	S	100	$338.17	D	8,350,490	D
Common Stock^F20	Jul 2, 2026	S	200	$339.75	D	8,350,290	D
Common Stock^F21	Jul 2, 2026	S	503	$341.6507	D	8,349,787	D
Common Stock^F22	Jul 2, 2026	S	297	$342.9447	D	8,349,490	D
Common Stock^F23	Jul 2, 2026	S	200	$344.64	D	8,349,290	D
Common Stock^F24	Jul 2, 2026	S	372	$346.6285	D	8,348,918	D
Common Stock^F25	Jul 2, 2026	S	428	$347.4393	D	8,348,490	D
Common Stock^F26	Jul 2, 2026	S	400	$350.535	D	8,348,090	D
Common Stock^F1	holding	—	—		—	167,125	I	See Footnote

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1These shares are held by the reporting person as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of the child of the reporting person.
F10The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.8400 and $318.8700.
F11The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.9800 and $321.4500.
F12The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $322.6200 and $323.2100.
F13The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.1900 and $324.2200.
F14The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.1800 and $328.5000.
F15The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.3400 and $332.2700.
F16The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $332.4300 and $333.3700.
F17The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.1500 and $335.0000.
F18The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $335.3100 and $335.5000.
F19The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $338.1700 and $338.1700.
F2This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.
F20The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $339.4900 and $340.0600.
F21The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $341.4400 and $342.3300.
F22The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $342.5400 and $343.1300.
F23The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $344.6200 and $344.6600.
F24The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $346.3200 and $347.0100.
F25The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $347.3200 and $347.7000.
F26The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $350.5200 and $350.5600.
F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.5000 and $309.4950. The reporting person undertakes to provide to Vicor Corporation, any security holder of Vicor Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3) through (26) to this Form 4.
F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $309.5000 and $310.4900.
F5The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $310.5000 and $311.4900.
F6The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.5000 and $312.2800.
F7The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $312.6700 and $313.4850.
F8The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $313.9700 and $314.8700.
F9The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $315.2800 and $315.2900.