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 44 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 ·

Insiders in this window

202410 of 12 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2024-12-02	EICHTEN ESTIA J Director	Sale	$444.08K 8,000 shares sold	3.36% sold Direct holding	▾
2024-11-13	Gusinov Alex Corp. Vice President Eng.	Sale	$50.51K 856 shares sold	5.07% sold Direct holding	▾
2024-11-07	GENDRON ROBERT Corp. VP - Marketing	Sale	$45.71K 794 shares sold	12.87% sold Direct holding	▾
2024-11-07	Tuozzolo Claudio Corp. Vice President · Director	Sale	$171.12K 2,999 shares sold	7.35% sold Direct holding	▾
2024-09-03	Fendelet Quentin A. Corp. VP-CAO	Sale	$1.49K 41 shares sold	100.00% sold Direct holding	▾
2024-08-14	Davies Philip D VP Global Sales & Marketing · Director	Sale	$841.86K 23,494 shares sold	59.85% sold Direct holding	▾
2024-05-14	CRILLY SEAN Corp. VP-Eng., Pwr Syst.	Sale	$14.84K 446 shares sold	1.80% sold Direct holding	▾
2024-05-08	Doyle Alvaro VP and CIO	Sale	$14.13K 427 shares sold	91.04% sold Direct holding	▾
2024-05-03	Grava Nancy L VP-Human Resources	Sale	$43.30K 1,277 shares sold	100.00% sold Direct holding	▾
2024-03-08	GENDRON ROBERT Corp. VP - Marketing	Sale	$73.65K 2,000 shares sold	27.12% sold Direct holding	▾

Showing 12 / 12 record groups in 2024. 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 12 of 12 purchase / sale groups and 30 of 44 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.