SEC Form 4 · accession 0000901484-26-000020

VICOR CORP · VICR

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

Reporting owner

Patrizio Vinciarelli

Officer — Chairman and CEO · Director · 10% Owner

Period of report

Jun 9, 2026

Accepted (ET)

Jun 10, 2026 · 4:11 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	Jun 9, 2026	S	400	$260.52	D	8,687,690	D
Common Stock^F4	Jun 9, 2026	S	400	$262.145	D	8,687,290	D
Common Stock^F5	Jun 9, 2026	S	500	$264.06	D	8,686,790	D
Common Stock^F6	Jun 9, 2026	S	429	$265.4946	D	8,686,361	D
Common Stock^F7	Jun 9, 2026	S	425	$266.8532	D	8,685,936	D
Common Stock^F8	Jun 9, 2026	S	446	$268.0841	D	8,685,490	D
Common Stock^F9	Jun 9, 2026	S	400	$268.4275	D	8,685,090	D
Common Stock^F10	Jun 9, 2026	S	400	$271.08	D	8,684,690	D
Common Stock^F11	Jun 9, 2026	S	295	$272.208	D	8,684,395	D
Common Stock^F12	Jun 9, 2026	S	677	$273.5851	D	8,683,718	D
Common Stock^F13	Jun 9, 2026	S	1,479	$274.4476	D	8,682,239	D
Common Stock^F14	Jun 9, 2026	S	800	$275.525	D	8,681,439	D
Common Stock^F15	Jun 9, 2026	S	495	$276.4872	D	8,680,944	D
Common Stock^F16	Jun 9, 2026	S	405	$278.1811	D	8,680,539	D
Common Stock^F17	Jun 9, 2026	S	536	$280.2563	D	8,680,003	D
Common Stock^F18	Jun 9, 2026	S	1,665	$281.294	D	8,678,338	D
Common Stock^F19	Jun 9, 2026	S	1,423	$282.1748	D	8,676,915	D
Common Stock^F20	Jun 9, 2026	S	2,336	$283.6146	D	8,674,579	D
Common Stock^F21	Jun 9, 2026	S	1,211	$284.69	D	8,673,368	D
Common Stock^F22	Jun 9, 2026	S	1,000	$285.6646	D	8,672,368	D
Common Stock^F23	Jun 9, 2026	S	770	$286.5643	D	8,671,598	D
Common Stock^F24	Jun 9, 2026	S	430	$287.2063	D	8,671,168	D
Common Stock^F25	Jun 9, 2026	S	800	$288.8694	D	8,670,368	D
Common Stock^F26	Jun 9, 2026	S	100	$289.25	D	8,670,268	D
Common Stock^F27	Jun 9, 2026	S	384	$290.8987	D	8,669,884	D
Common Stock^F28	Jun 9, 2026	S	516	$291.8698	D	8,669,368	D
Common Stock^F29	Jun 9, 2026	S	878	$293.3039	D	8,668,490	D
Common Stock^F30	Jun 9, 2026	S	400	$294.1025	D	8,668,090	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 $270.6200 to $271.5100.
F11The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $271.7300 to $272.5700.
F12The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $272.9400 to $273.8800.
F13The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $274.1300 to $274.7400.
F14The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $275.2300 to $276.0800.
F15The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $276.2400 to $277.2100.
F16The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $277.2700 to $278.2000.
F17The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $279.7700 to $280.7600.
F18The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $280.7700 to $281.7100.
F19The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $281.8100 to $282.4500.
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 $283.0500 to $283.9100.
F21The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $284.0800 to $284.9400.
F22The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $285.0900 to $286.0500.
F23The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $286.1600 to $287.1100.
F24The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $287.1900 to $287.2900.
F25The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $288.2500 to $289.2200.
F26The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $289.2500 to $289.2500.
F27The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $290.6600 to $291.6400.
F28The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $291.6800 to $292.1700.
F29The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $292.8900 to $293.8100.
F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $260.4200 to $260.6200. 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 (30) to this Form 4.
F30The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $293.9800 to $294.2300.
F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $261.9800 to $262.2200
F5The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $263.7800 to $264.6000
F6The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $265.3000 to $266.2500.
F7The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $266.3500 to $267.3050
F8The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $267.3800 to $268.2800
F9The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $268.4100 to $268.4500.