Company · Ownership research

VICOR CORP VICR

CIK 0000751978

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 114 rows; the complete set is available through the API.

Insider filings on file run through 2026-09-03.

Insider purchases & sales

Purchased: $0.00
Sold: $413.96M

Sep 1, 2023 – Sep 3, 2026
Available records · partial months are marked ·

202610 of 30 preview events · 114 available in 2026

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-09-01	Davies Philip D Corp. VP-Global Sales & Mktg. · Director	Sale10b5-1 footnote	$546.08K 3,073 shares sold	61.55% sold Direct holding	▾
2026-08-17	Lavie Zmira Director	Sale	$227.00K 908 shares sold	100.00% sold Direct holding	▾
2026-08-17	ANDERSON SAMUEL J Director	Sale	$523.64K 2,073 shares sold	33.94% sold Direct holding	▾
2026-08-03	Davies Philip D Corp. VP-Global Sales & Mktg. · Director	Sale10b5-1 footnote	$650.31K 3,072 shares sold	61.54% sold Direct holding	▾
2026-07-23	Lavie Zmira Director	Sale	$273.26K 1,216 shares sold	100.00% sold Direct holding	▾
2026-07-06	VINCIARELLI PATRIZIO Chairman & CEO · Director · 10% owner	Sale10b5-1 footnote	$211.68K 700 shares sold	0.01% sold Direct holding	▾
2026-07-02	VINCIARELLI PATRIZIO Chairman & CEO · Director · 10% owner	Sale10b5-1 footnote	$6.38M 20,000 shares sold	0.24% sold Direct holding	▾
2026-07-01	Davies Philip D Corp. VP-Global Sales & Mktg. · Director	Sale10b5-1 footnote	$1.10M 3,073 shares sold	61.55% sold Direct holding	▾
2026-07-01	VINCIARELLI PATRIZIO Chairman & CEO · Director · 10% owner	Sale10b5-1 footnote	$7.13M 20,000 shares sold	0.24% sold Direct holding	▾
2026-06-30	VINCIARELLI PATRIZIO Chairman & CEO · Director · 10% owner	Sale10b5-1 footnote	$7.50M 20,000 shares sold	0.24% sold Direct holding	▾

Showing 30 / 114 record groups in 2026. The complete set is available through the API.

VICOR CORP · VICR

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 114 purchase / sale groups and 30 of 195 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"VICR","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.