VINCIARELLI PATRIZIO 4

What Happened

• Patrizio Vinciarelli, a reported 10% owner (as Trustee of the Patrizio Vinciarelli Irrevocable Trust), sold a total of 50,000 Vicor (VICR) shares in open‑market/private sales on March 10, 2026. The sales were executed in multiple lots at reported weighted‑average prices for each lot, producing aggregate proceeds of approximately $8,862,569. One portion of the sales was effected pursuant to a Rule 10b5‑1 trading plan adopted November 3, 2025.
• These were outright sales (not purchases or option exercises). Sales by large shareholders can be routine (e.g., planned dispositions or diversification) and do not by themselves indicate company performance.

Key Details

• Transaction date: March 10, 2026 (Form 4 filed March 11, 2026 — appears timely).
• Total shares sold: 50,000; total proceeds: ~$8.86 million.
• Price details: individual lot weighted‑average prices reported from $169.70 up to $182.17 (footnotes report transaction price ranges across lots roughly $169.70 to $182.47).
• Ownership/position: Reporting person is 10% owner and sold shares as Trustee of an irrevocable trust (Footnote F1). The filing summary provided here does not specify remaining shares owned after these sales—see the full Form 4 for post‑transaction beneficial ownership.
• Notable footnotes: F2 indicates at least one sale was pursuant to a pre‑arranged Rule 10b5‑1 plan (adopted 11/03/2025). Multiple footnotes (F3–F14) note that reported prices are weighted averages and provide the per‑lot price ranges; the filer offers to provide per‑trade breakdowns on request.

Context

• For retail investors: purchases tend to be more informative about insider confidence; sales by large holders can be for many reasons (taxes, diversification, trust management, pre‑arranged plans). The presence of a 10b5‑1 plan means at least part of the selling was pre‑scheduled. Check the full Form 4 for exact post‑sale holdings and any additional disclosures.