Vicor Corp: 10% owner Patrizio Vinciarelli sold 20,000 shares

What happened Patrizio Vinciarelli, identified as a 10% owner, sold a total of 20,000 shares of Vicor Corp in multiple open-market transactions on Oct 1, 2026. Reported per-share prices ranged from $306.49 to $330.00 (some line items show weighted-average prices); total reported proceeds were $6,322,516. The Form 4 was filed on Oct 5, 2026.

Key details

• Transaction date: Oct 1, 2026. Form 4 filed: Oct 5, 2026 (timely filing).
• Individual sale lots and reported prices (selected): 1,300 sh @ $307.02 ($399,120); 2,300 sh @ $308.24 ($708,941); 2,400 sh @ $318.05 ($763,326); 900 sh @ $330.00 ($297,000). The filing shows multiple other lots; several reported prices are weighted averages across price ranges.
• Total shares sold: 20,000. Total proceeds reported: $6,322,516.
• Shares held/ownership: the filing notes these shares are held by the reporting person as trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012 (benefit of a child). The Form 4 excerpt provided does not state shares owned after the transactions.
• Footnotes: one sale was effected pursuant to a Rule 10b5-1 trading plan adopted Feb 26, 2026. Multiple footnotes state reported prices are weighted averages and give price ranges; the reporting person undertakes to provide a breakdown of shares sold at each separate price on request.

Why it may matter

• These were open-market sales, not option exercises or gifts.
• The reporting person is a 10% owner (a large holder), not identified as an executive in this filing.
• The filing does not show why the insider traded or why the company acted.