VINCIARELLI PATRIZIO 4
4 · VICOR CORP · Filed Mar 23, 2026
Research Summary
AI-generated summary of this filing
Vicor (VICR) 10% Owner Patrizio Vinciarelli Sells 44,076 Shares
What Happened
- Patrizio Vinciarelli, a reported 10% owner of Vicor Corporation (VICR) and trustee of the Patrizio Vinciarelli Irrevocable Trust (for the benefit of his child), sold a total of 44,076 shares on March 20, 2026 in multiple open‑market transactions. The aggregate proceeds were approximately $7,928,260.
- The sales were executed in several lots with weighted‑average prices ranging from about $174.64 to $188.89 per share (individual lot details below). One or more of the sales were effected pursuant to a Rule 10b5‑1 trading plan adopted November 3, 2025.
Key Details
- Transaction date: March 20, 2026 (reported on Form 4 filed March 23, 2026).
- Lots (qty @ weighted‑avg price = proceeds):
- 4,766 @ $174.64 = $832,332
- 3,010 @ $176.00 = $529,763
- 4,680 @ $177.87 = $832,436
- 13,126 @ $178.75 = $2,346,308
- 2,579 @ $179.72 = $463,510
- 2,201 @ $180.62 = $397,549
- 4,656 @ $181.71 = $846,060
- 1,958 @ $182.64 = $357,600
- 1,500 @ $184.67 = $277,002
- 3,999 @ $186.27 = $744,899
- 1,101 @ $187.43 = $206,356
- 500 @ $188.89 = $94,445
- Total shares sold: 44,076; total proceeds: ~$7.93 million.
- Ownership after transaction: not specified in the summary data provided in this brief (check the filed Form 4 for post‑transaction holdings).
- Notable footnotes: shares are held by the reporting person as trustee of an irrevocable trust (for a child); several reported prices are weighted averages of multiple executions with price ranges noted in the filing; at least some sales were made under a Rule 10b5‑1 trading plan.
- Timeliness: Form 4 filed March 23, 2026 for transactions dated March 20, 2026 — the filing appears timely.
Context
- These are sales by a 10% owner/trustee rather than an ordinary employee buy signal; planned sales under a 10b5‑1 plan are common and often pre‑scheduled. Sales alone are not proof of a change in the company's prospects.
- The filing includes weighted‑average prices and ranges for multiple executions; the reporting person offers to provide detailed per‑price execution counts on request (as noted in the Form 4 footnotes).
Insider Transaction Report
Form 4
VICOR CORPVICR
VINCIARELLI PATRIZIO
DirectorChairman and CEO10% Owner
Transactions
- Sale
Common Stock
[F2][F3]2026-03-20$174.64/sh−4,766$832,332→ 9,103,397 total - Sale
Common Stock
[F2][F4]2026-03-20$176.00/sh−3,010$529,763→ 9,100,387 total - Sale
Common Stock
[F2][F5]2026-03-20$177.87/sh−4,680$832,436→ 9,095,707 total - Sale
Common Stock
[F2][F6]2026-03-20$178.75/sh−13,126$2,346,308→ 9,082,581 total - Sale
Common Stock
[F2][F7]2026-03-20$179.72/sh−2,579$463,510→ 9,080,002 total - Sale
Common Stock
[F2][F8]2026-03-20$180.62/sh−2,201$397,549→ 9,077,801 total - Sale
Common Stock
[F2][F9]2026-03-20$181.71/sh−4,656$846,060→ 9,073,145 total - Sale
Common Stock
[F2][F10]2026-03-20$182.64/sh−1,958$357,600→ 9,071,187 total - Sale
Common Stock
[F2][F11]2026-03-20$184.67/sh−1,500$277,002→ 9,069,687 total - Sale
Common Stock
[F2][F12]2026-03-20$186.27/sh−3,999$744,899→ 9,065,688 total - Sale
Common Stock
[F2][F13]2026-03-20$187.43/sh−1,101$206,356→ 9,064,587 total - Sale
Common Stock
[F2][F14]2026-03-20$188.89/sh−500$94,445→ 9,064,087 total
Holdings
- 171,125(indirect: See Footnote)
Common Stock
[F1]
Footnotes (14)
- [F1]These 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.
- [F10]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.3900 to $182.9100.
- [F11]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.4900 to $184.8200.
- [F12]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.7000 to $186.5500.
- [F13]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $186.7600 to $187.5900.
- [F14]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $188.8400 to $189.0300.
- [F2]This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.
- [F3]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $174.1100 to $175.0700. 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 (14) to this Form 4.
- [F4]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.2800 to $176.1900.
- [F5]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.2100 to $178.2000.
- [F6]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $178.2100 to $179.2000.
- [F7]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $179.2300 to $180.1700.
- [F8]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $180.3000 to $181.2700.
- [F9]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.3600 to $182.2000.
Signature
/s/Quentin A. Fendelet Attorney in fact for Patrizio Vinciarelli|2026-03-23