VICR insider ownership: who sold, why, and what they still hold

What stands out

12 insiders sold $47.3M with no disclosed plan: Claudio Tuozzolo ($13.7M), Michael McNamara ($7.5M) and Alvaro Doyle ($5.3M), plus 9 more. The filings don't state a reason.Claudio Tuozzolo: largest such sale, Apr 24, 2026 · Michael McNamara: largest such sale, May 11, 2026 · Alvaro Doyle: largest such sale, Apr 23, 2026

A share of stake is shown for 0 of the 18 officers and directors who sold. 18 are left out

Left out: Patrizio Vinciarelli, Estia Eichten, Claudio Tuozzolo, Sean Crilly, Michael McNamara, Alex Gusinov, Philip Davies, Samuel Anderson, Robert Gendron, Andrew D'Amico, James Schmidt, Alvaro Doyle, Kemble Morrison, Jason Carlson, Nancy Grava, Quentin Fendelet, Zheng Shen and Zmira Lavie (share of stake is being verified).

Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.

Patrizio Vinciarelli

Chairman & CEO, Director

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$347M99.7% planned 0.3% no plan disclosed

Claudio Tuozzolo

Corp. Vice President, Director

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$13.7MNo plan disclosed

James Schmidt

CFO, Treasurer, Secretary, Director

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$9.0M99% planned 1% no plan disclosed

Philip Davies

Corp. VP-Global Sales & Mktg., Director

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$8.1M82% planned 18% no plan disclosed

Michael McNamara

Corp. VP-General Mrg. Ops., Director

Not confirmed

Share of stake not shown: share of stake is being verified. Why

$7.5MNo plan disclosed

All 18 sellers

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planNo plan disclosedOne dollar scale for every month; the tallest bar is labeled

Recent activity

Past 30 days, Sep 14, 2026 to Oct 13, 2026

Oct 2, 2026Patrizio Vinciarelli sold 20K shares ($6.2M) under a disclosed trading plan.

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Patrizio Vinciarelli Chairman & CEO, Director	20,000	$310.12	n/a	n/a	Oct 2, 2026	Oct 5, 2026

Oct 1, 20262 executives sold 23K shares ($7.3M) under a disclosed trading plan. 3.1K shares came in from vesting or option exercises the same day, so their combined holdings fell by 20K net.

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Patrizio Vinciarelli Chairman & CEO, Director	20,000	$316.13	n/a	n/a	Oct 1, 2026	Oct 5, 2026
Philip Davies Corp. VP-Global Sales & Mktg., Director	3,072	$316.37	n/a	n/a	Oct 1, 2026	Oct 5, 2026

"% of total stake" is the shares in an event against all the vested shares the person held that day, across every share class and holding entity, after that day's vesting. "n/a" means the person's holdings are not confirmed, or the row is a purchase. "Holdings record incomplete" means more shares were sold than the filings show the person held that day, so a percentage would be wrong.

Common questions

Is the Vicor Corp CEO selling stock?

Yes. Patrizio Vinciarelli sold 1.54M shares ($347M) in the past 12 months, 99.7% of it under a trading plan disclosed in the filings.

Why are Vicor Corp insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 88% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 12% had no disclosed plan. A trading plan schedules sales in advance.

Are any Vicor Corp insiders buying?

No. Officers and directors reported no purchases in the past 12 months.

The evidence

Who sold18 officers and directors: amount, % of holdings, trading plan

Who sold	Amount	% of holdings	Trading plan
Patrizio Vinciarelli Chairman & CEO, Director	$347M 1.54M shares	Not confirmed share of stake is being verified. Why	99.7% under a disclosed plan 0.3% no plan disclosed
Claudio Tuozzolo Corp. Vice President, Director	$13.7M 71K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
James Schmidt CFO, Treasurer, Secretary, Director	$9.0M 49K shares	Not confirmed share of stake is being verified. Why	99% under a disclosed plan 1% no plan disclosed
Philip Davies Corp. VP-Global Sales & Mktg., Director	$8.1M 43K shares	Not confirmed share of stake is being verified. Why	82% under a disclosed plan 18% no plan disclosed
Michael McNamara Corp. VP-General Mrg. Ops., Director	$7.5M 30K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Estia Eichten Director	$7.3M 46K shares	Not confirmed share of stake is being verified. Why	93% under a disclosed plan 7% no plan disclosed
Andrew D'Amico Director	$6.0M 38K shares	Not confirmed share of stake is being verified. Why	87% under a disclosed plan 13% no plan disclosed
Alvaro Doyle VP and CIO	$5.3M 28K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Quentin Fendelet Corp. VP - CAO	$5.2M 31K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Sean Crilly Corp. VP-Eng., Pwr Syst.	$3.3M 22K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Nancy Grava VP Human Resources	$2.7M 15K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Robert Gendron Corp. VP - Marketing	$2.6M 16K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Alex Gusinov Corp. Vice President Eng.	$2.0M 14K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Kemble Morrison VP-Corporate Controller	$1.4M 7K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Samuel Anderson Director	$1.2M 5.9K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Jason Carlson Director	$986K 8.4K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Zmira Lavie Director	$833K 5.8K shares	Not confirmed share of stake is being verified. Why	No plan disclosed
Zheng Shen Director	$691K 3.7K shares	Not confirmed share of stake is being verified. Why	No plan disclosed

The full ownership picture0 of 18 officers and directors confirmed

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

Insider

Held Oct 13, 2025

Sold

Held Oct 13, 2026

Still held

Patrizio Vinciarelli

Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Patrizio Vinciarelli are complete.

Chairman & CEO, Director

n/a

−1.54M

n/a

Vesting, gifts, unvested awards and holding lines for Patrizio Vinciarelli

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Patrizio Vinciarelli are complete; balances and unit counts will be added when the check is finished.

−7Kgifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
13,818	$41.61	n/a	$3.8M
12,165	$33.96	n/a	$3.4M
8,915	$50.00	n/a	$2.3M
4,113	$60.61	Apr 25, 2026	$1.0M
1,730	$266.00	n/a	$82K

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Estia Eichten

Director

n/a

−46K

n/a

Vesting, gifts, unvested awards and holding lines for Estia Eichten

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Estia Eichten are complete; balances and unit counts will be added when the check is finished.

−90Kgifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
6,081	$32.89	Jun 21, 2034	$1.7M
4,539	$44.07	Jun 20, 2035	$1.2M

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Claudio Tuozzolo

Corp. Vice President, Director

n/a

−71K

n/a

Vesting, gifts, unvested awards and holding lines for Claudio Tuozzolo

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Claudio Tuozzolo are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
200	$100.00	Jun 25, 2031	$43K
1,202	$60.61	n/a	$304K
662	$60.37	Jun 24, 2032	$167K
7,860	$41.61	n/a	$2.1M
2,261	$53.07	Jun 23, 2033	$588K
26,183	$33.96	n/a	$7.3M
4,864	$32.89	Jun 21, 2034	$1.4M
21,381	$50.00	n/a	$5.6M
4,539	$44.07	Jun 20, 2035	$1.2M
866	$75.43	n/a	$206K
5,187	$266.00	n/a	$245K
548	$365.53	Jun 22, 2036	$0

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Sean Crilly

Corp. VP-Eng., Pwr Syst.

n/a

−22K

n/a

Vesting, gifts, unvested awards and holding lines for Sean Crilly

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Sean Crilly are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
3,141	$41.61	n/a	$853K
2,725	$33.96	n/a	$761K
1,930	$50.00	n/a	$508K
598	$75.43	n/a	$142K
1,662	$60.61	n/a	$420K
3,734	$266.00	n/a	$177K

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Michael McNamara

Corp. VP-General Mrg. Ops., Director

n/a

−30K

n/a

Vesting, gifts, unvested awards and holding lines for Michael McNamara

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Michael McNamara are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
8,257	$41.61	n/a	$2.2M
10,651	$33.96	n/a	$3.0M
6,081	$32.89	Jun 21, 2034	$1.7M
500	$48.38	Jan 16, 2028	$132K
4,539	$44.07	Jun 20, 2035	$1.2M
1,666	$60.61	Apr 25, 2029	$421K
3,564	$266.00	n/a	$169K
758	$75.43	n/a	$180K
548	$365.53	Jun 22, 2036	$0

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Alex Gusinov

Corp. Vice President Eng.

n/a

−14K

n/a

Vesting, gifts, unvested awards and holding lines for Alex Gusinov

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Alex Gusinov are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
8,058	$41.61	n/a	$2.2M
12,993	$33.96	n/a	$3.6M
9,046	$50.00	n/a	$2.4M
888	$75.43	n/a	$211K
1,848	$60.61	n/a	$467K
2,633	$266.00	n/a	$125K

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Philip Davies

Corp. VP-Global Sales & Mktg., Director

n/a

−43K

n/a

Vesting, gifts, unvested awards and holding lines for Philip Davies

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Philip Davies are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
11,607	$41.61	n/a	$3.2M
35,646	$33.96	n/a	$10.0M
6,081	$32.89	Jun 21, 2034	$1.7M
23,430	$50.00	n/a	$6.2M
4,539	$44.07	Jun 20, 2035	$1.2M
20,000	$46.72	Jul 9, 2035	$5.3M
1,827	$75.43	n/a	$435K
7,752	$60.61	n/a	$2.0M
4,547	$266.00	n/a	$215K
548	$365.53	Jun 22, 2036	$0
856	$41.61	May 2, 2028	$233K
7,678	$41.61	May 2, 2028	$2.1M

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Samuel Anderson

Director

n/a

−5.9K

n/a

Vesting, gifts, unvested awards and holding lines for Samuel Anderson

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Samuel Anderson are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
331	$60.37	Jun 24, 2032	$84K
1,507	$53.07	Jun 23, 2033	$392K
3,648	$32.89	Jun 21, 2034	$1.0M
3,631	$44.07	Jun 20, 2035	$978K
548	$365.53	Jun 22, 2036	$0

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Robert Gendron

Corp. VP - Marketing

n/a

−16K

n/a

Vesting, gifts, unvested awards and holding lines for Robert Gendron

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Robert Gendron are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
1,588	$41.61	n/a	$431K
3,550	$33.96	n/a	$992K
2,448	$32.97	n/a	$686K
2,873	$50.00	n/a	$757K
577	$60.61	n/a	$146K
1,578	$266.00	n/a	$75K

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Andrew D'Amico

Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Andrew D'Amico are complete.

Director

n/a

−38K

n/a

Vesting, gifts, unvested awards and holding lines for Andrew D'Amico

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Andrew D'Amico are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Some sales match sales reported by James Schmidt exactly (date, shares and price). Possibly the same shares reported by both; the filings don't confirm it.

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
331	$60.37	Jun 24, 2032	$84K
5,832	$41.61	n/a	$1.6M
1,507	$53.07	Jun 23, 2033	$392K
6,000	$39.25	n/a	$1.6M
13,788	$33.96	n/a	$3.9M
3,648	$32.89	Jun 21, 2034	$1.0M
10,016	$50.00	n/a	$2.6M
4,539	$44.07	Jun 20, 2035	$1.2M
800	$60.61	n/a	$202K
4,100	$266.00	n/a	$194K
548	$365.53	Jun 22, 2036	$0

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

James Schmidt

CFO, Treasurer, Secretary, Director

n/a

−49K

n/a

Vesting, gifts, unvested awards and holding lines for James Schmidt

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for James Schmidt are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Some sales match sales reported by Andrew D'Amico exactly (date, shares and price). Possibly the same shares reported by both; the filings don't confirm it.

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
331	$60.37	Jun 24, 2032	$84K
6,491	$41.61	n/a	$1.8M
1,507	$53.07	Jun 23, 2033	$392K
3,648	$32.89	Jun 21, 2034	$1.0M
4,112	$50.00	n/a	$1.1M
3,631	$44.07	Jun 20, 2035	$978K
1,240	$60.61	n/a	$313K
1,129	$266.00	n/a	$53K
548	$365.53	Jun 22, 2036	$0

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Alvaro Doyle

VP and CIO

n/a

−28K

n/a

Vesting, gifts, unvested awards and holding lines for Alvaro Doyle

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Alvaro Doyle are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
3,000	$69.04	Jun 24, 2030	$733K
4,000	$46.96	Apr 3, 2033	$1.1M
4,932	$41.61	n/a	$1.3M
11,561	$33.96	n/a	$3.2M
6,299	$50.00	n/a	$1.7M
369	$75.43	n/a	$88K
1,160	$60.61	n/a	$293K
1,514	$266.00	n/a	$72K

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Kemble Morrison

VP-Corporate Controller

n/a

−7K

n/a

Vesting, gifts, unvested awards and holding lines for Kemble Morrison

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Kemble Morrison are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
380	$75.43	n/a	$90K
372	$60.61	n/a	$94K
1,360	$41.61	n/a	$370K
2,213	$33.96	n/a	$618K
2,089	$50.00	n/a	$550K
497	$266.00	n/a	$24K

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Jason Carlson

Director

n/a

−8.4K

n/a

Vesting, gifts, unvested awards and holding lines for Jason Carlson

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jason Carlson are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
200	$100.00	Jun 25, 2031	$43K
662	$60.37	Jun 24, 2032	$167K
2,261	$53.07	Jun 23, 2033	$588K
4,864	$32.89	Jun 21, 2034	$1.4M
4,539	$44.07	Jun 20, 2035	$1.2M
548	$365.53	Jun 22, 2036	$0

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Nancy Grava

VP Human Resources

n/a

−15K

n/a

Vesting, gifts, unvested awards and holding lines for Nancy Grava

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Nancy Grava are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
3,384	$41.61	n/a	$919K
1,200	$38.95	Nov 6, 2033	$329K
5,951	$33.96	n/a	$1.7M
4,910	$50.00	n/a	$1.3M
507	$60.61	n/a	$128K
1,049	$266.00	n/a	$50K

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Quentin Fendelet

Corp. VP - CAO

n/a

−31K

n/a

Vesting, gifts, unvested awards and holding lines for Quentin Fendelet

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Quentin Fendelet are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
2,000	$71.74	Mar 1, 2032	$483K
457	$60.61	n/a	$115K
4,529	$41.61	n/a	$1.2M
14,889	$33.96	n/a	$4.2M
9,734	$50.00	n/a	$2.6M
2,514	$266.00	n/a	$119K

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Zheng Shen

Director

n/a

−3.7K

n/a

Vesting, gifts, unvested awards and holding lines for Zheng Shen

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Zheng Shen are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
662	$60.37	Jun 24, 2032	$167K
2,261	$53.07	Jun 23, 2033	$588K
4,864	$32.89	Jun 21, 2034	$1.4M
4,539	$44.07	Jun 20, 2035	$1.2M
548	$365.53	Jun 22, 2036	$0

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Zmira Lavie

Director

n/a

−5.8K

n/a

Vesting, gifts, unvested awards and holding lines for Zmira Lavie

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Zmira Lavie are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
662	$60.37	Jun 24, 2032	$167K
2,261	$53.07	Jun 23, 2033	$588K
3,648	$32.89	Jun 21, 2034	$1.0M
3,631	$44.07	Jun 20, 2035	$978K
548	$365.53	Jun 22, 2036	$0

Estimate: options held × ($313.32 − strike price), using the most recent insider trade price on Form 4 (Oct 2, 2026), not a market close.

Holdings and share of stake for Vicor Corp are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.

What explains the selling$424M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $424M across 1,978,436 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

Disclosed plan · $373M · 88%

12%

The lighter segment is sales with no plan disclosed in the filing ($51.2M), including tax-related sales outside a plan.

No plan disclosed · $51.2M

Sales with no 10b5-1 plan and no tax reference in the filing. $13.7M of it is Claudio Tuozzolo. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Michael McNamara, May 11, 2026

Charitable gifts · 90K shares

Gifts the filings describe as charitable. Gifts are not sales and are not included in the sale totals.

Seller	Shares sold	Proceeds	Under a disclosed plan	Share of total	Sales dates
Patrizio Vinciarelli Chairman & CEO, Director	1.54M	$347M	99.7%	82%	Nov 12, 2025 to Oct 2, 2026
Claudio Tuozzolo Corp. Vice President, Director	71K	$13.7M	0%	3%	Oct 23, 2025 to Jun 11, 2026
James Schmidt CFO, Treasurer, Secretary, Director	49K	$9.0M	99%	2%	Oct 22, 2025 to Jun 25, 2026
Philip Davies Corp. VP-Global Sales & Mktg., Director	43K	$8.1M	82%	2%	Oct 24, 2025 to Oct 1, 2026
Michael McNamara Corp. VP-General Mrg. Ops., Director	30K	$7.5M	0%	2%	Dec 11, 2025 to May 11, 2026
Estia Eichten Director	46K	$7.3M	93%	2%	Oct 23, 2025 to Mar 13, 2026
Andrew D'Amico Director	38K	$6.0M	87%	1%	Oct 21, 2025 to Jun 26, 2026
Alvaro Doyle VP and CIO	28K	$5.3M	0%	1%	Oct 23, 2025 to May 12, 2026
Quentin Fendelet Corp. VP - CAO	31K	$5.2M	0%	1%	Oct 23, 2025 to May 11, 2026
Sean Crilly Corp. VP-Eng., Pwr Syst.	22K	$3.3M	0%	0.8%	Oct 27, 2025 to Jun 5, 2026
Nancy Grava VP Human Resources	15K	$2.7M	0%	0.6%	Oct 23, 2025 to May 27, 2026
Robert Gendron Corp. VP - Marketing	16K	$2.6M	0%	0.6%	Oct 23, 2025 to May 26, 2026
Alex Gusinov Corp. Vice President Eng.	14K	$2.0M	0%	0.5%	Oct 28, 2025 to May 13, 2026
Kemble Morrison VP-Corporate Controller	7K	$1.4M	0%	0.3%	Oct 23, 2025 to May 11, 2026
Samuel Anderson Director	5.9K	$1.2M	0%	0.3%	Feb 23, 2026 to Aug 17, 2026
Jason Carlson Director	8.4K	$986K	0%	0.2%	Dec 10, 2025 to May 6, 2026
Zmira Lavie Director	5.8K	$833K	0%	0.2%	Oct 28, 2025 to Aug 17, 2026
Zheng Shen Director	3.7K	$691K	0%	0.2%	Feb 23, 2026 to Mar 4, 2026

Sales by month

Month	Sale proceeds	Disclosed plan	To cover taxes	No plan disclosed
Oct 2025	$11.8M	$2.6M	$0	$9.2M
Nov 2025	$2.6M	$1.4M	$0	$1.2M
Dec 2025	$16.4M	$14.8M	$0	$1.6M
Jan 2026	$118K	$118K	$0	$0
Feb 2026	$8.3M	$0	$0	$8.3M
Mar 2026	$143M	$141M	$0	$2.4M
Apr 2026	$33.2M	$27.1M	$0	$6.2M
May 2026	$37.8M	$17.4M	$0	$20.5M
Jun 2026	$140M	$139M	$0	$920K
Jul 2026	$15.1M	$14.8M	$0	$273K
Aug 2026	$1.4M	$650K	$0	$751K
Sep 2026	$546K	$546K	$0	$0
Oct 2026	$13.5M	$13.5M	$0	$0

Is this normal? Selling year by year5 earlier years to compare with

More than usual: about 10x the 5-year average. 18 insiders sold; the average is 9 a year.

12 months ending	Shares sold	Insiders who sold	Proceeds
Oct 13, 2026 Latest 12 months	1.98M	18	$424M
Oct 13, 2025 1 year earlier	35K	6	$2.0M
Oct 13, 2024 2 years earlier	31K	7	$1.1M
Oct 14, 2023 3 years earlier	69K	8	$4.1M
Oct 14, 2022 4 years earlier	285K	10	$42.4M
Oct 14, 2021 5 years earlier	527K	15	$57.7M

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertainty18 officers and directors not confirmed

Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Vicor Corp are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology962 filings on record, 182 filed in the 12-month period, and how we read them

All 962 Forms 3, 4 and 5 on record for Vicor Corp (SEC CIK 751978), filed from Jul 7, 2003 to Oct 5, 2026; 182 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 13, 2026. Prices are the ones reported in each filing, often weighted averages.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (16)No filing in 18 months; last reported balances, not in any total

Name	Last filed	Last reported balance
Michael Ansour	Jun 24, 2024	No balance on record
Richard Nagel Jr.	Mar 3, 2022	No balance on record
James Simms	Mar 12, 2021	11,303 shares, last reported balance as of Mar 10, 2021
Joseph Jeffery	Jun 25, 2020	3,551 shares, last reported balance as of Jun 24, 2020
Allen Henderson	May 3, 2019	219 shares, last reported balance as of May 1, 2019
Robert Russell	Mar 8, 2019	No balance on record
Barry Kelleher	Nov 9, 2018	2,257 shares, last reported balance as of Nov 7, 2018
Liam Griffin	Aug 9, 2018	No balance on record
David Riddiford	Nov 29, 2016	91,472 shares, last reported balance as of Nov 29, 2016
Douglas Richardson	Nov 12, 2014	88 shares, last reported balance as of Nov 7, 2014
Richard Zengilowski	Nov 3, 2014	560 shares, last reported balance as of Oct 30, 2014
Mark Glazer	May 21, 2008	13,690 shares, last reported balance as of May 20, 2008
Jay Prager	Jun 23, 2006	296 shares, last reported balance as of Feb 22, 2006
Joseph Kelly	Jun 23, 2006	No balance on record
Thomas Germain	Feb 28, 2006	No balance on record
David Nesbitt	Nov 22, 2005	34,000 shares, last reported balance as of Nov 21, 2005

Spotted something wrong on this page? Report an error. We check every report against the SEC filing and list what we fix in the corrections log.

Vicor Corp insiders sold $424M in the past 12 months. How much of their stake is that?

What stands out

Who sold, and how much of their stake

Selling by month

Recent activity

Common questions

Is the Vicor Corp CEO selling stock?

Why are Vicor Corp insiders selling?

Are any Vicor Corp insiders buying?

The evidence

No plan disclosed · $51.2M

Charitable gifts · 90K shares

Sales by month