VINCIARELLI PATRIZIO 4
4 · VICOR CORP · Filed Mar 12, 2026
Research Summary
AI-generated summary of this filing
Vicor (VICR) 10% Owner Patrizio Vinciarelli Sells 50,000 Shares
What Happened Patrizio Vinciarelli, a reported 10% owner of Vicor Corporation (VICR), sold a total of 50,000 shares in open-market transactions on March 11, 2026. The sales were executed in multiple lots with reported per-share prices (weighted averages for groups of trades) ranging roughly from $167.75 up to $180.54; total reported proceeds across all lots were about $8.87 million. These transactions are reported as sales (code S).
Vinciarelli holds some of these shares as trustee of the Patrizio Vinciarelli Irrevocable Trust (per the filing). At least one of the sales was made pursuant to a Rule 10b5-1 trading plan established on November 3, 2025. The Form 4 was filed the next day (Mar 12, 2026), which appears timely.
Key Details
- Transaction date: March 11, 2026 (filed Mar 12, 2026).
- Total shares sold: 50,000; total proceeds: approximately $8,870,435.
- Price details: multiple lots with weighted-average prices reported; individual trade price ranges noted in the filing span about $167.75 to $180.54.
- Holdings: shares were held in part by the reporting person as Trustee of an irrevocable trust (footnote F1). The filing does not list the total shares owned following these transactions in the material you provided.
- Notable footnotes: at least one sale was pursuant to a Rule 10b5-1 trading plan (footnote F2). Several line items use weighted-average pricing and list the price ranges for the multiple trades (footnotes F3–F13).
- Timeliness: Filing date is the day after the trades (appears timely, not late).
Context
- This is insider selling by a 10% owner (not a routine executive buy signal). Sales under a pre-established 10b5-1 plan are often pre-planned and do not necessarily indicate a change in view about the company.
- For retail investors: purchases by insiders generally carry more positive interpretive weight than routine sales. These sales were executed across multiple trades and price ranges; the reporting person offered to provide detailed per-price breakdowns on request in the filing footnotes.
Insider Transaction Report
Form 4
VICOR CORPVICR
VINCIARELLI PATRIZIO
DirectorChairman and CEO10% Owner
Transactions
- Sale
Common Stock
[F2][F3]2026-03-11$168.12/sh−200$33,625→ 9,457,963 total - Sale
Common Stock
[F2][F4]2026-03-11$169.38/sh−1,408$238,491→ 9,456,555 total - Sale
Common Stock
[F2][F5]2026-03-11$170.31/sh−292$49,731→ 9,456,263 total - Sale
Common Stock
[F2][F6]2026-03-11$171.26/sh−300$51,377→ 9,455,963 total - Sale
Common Stock
[F2][F7]2026-03-11$173.01/sh−1,540$266,435→ 9,454,423 total - Sale
Common Stock
[F2][F8]2026-03-11$174.32/sh−1,160$202,214→ 9,453,263 total - Sale
Common Stock
[F2][F9]2026-03-11$176.17/sh−4,007$705,932→ 9,449,256 total - Sale
Common Stock
[F2][F10]2026-03-11$177.28/sh−10,063$1,783,988→ 9,439,193 total - Sale
Common Stock
[F2][F11]2026-03-11$178.12/sh−18,734$3,336,921→ 9,420,459 total - Sale
Common Stock
[F2][F12]2026-03-11$178.95/sh−11,185$2,001,551→ 9,409,274 total - Sale
Common Stock
[F2][F13]2026-03-11$180.17/sh−1,111$200,170→ 9,408,163 total
Holdings
- 171,125(indirect: See Footnote)
Common Stock
[F1]
Footnotes (13)
- [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 $176.6700 to $177.6600.
- [F11]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.6700 to $178.6600.
- [F12]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $178.6700 to $179.6200.
- [F13]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $179.6700 to $180.5400.
- [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 $167.7500 to $168.7100. 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 (13) 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 $168.7900 to $169.7300.
- [F5]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.0000 to $170.6200.
- [F6]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.0500 to $171.6700.
- [F7]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.8300 to $173.7500.
- [F8]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $174.0000 to $174.5000.
- [F9]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.6700 to $176.6200.
Signature
/s/Kemble D. Morrison. Attorney in fact for Patrizio Vinciarelli|2026-03-12