VINCIARELLI PATRIZIO 4

What Happened
Patrizio Vinciarelli, a reported 10% owner of Vicor Corporation (VICR), disposed of 50,000 shares in multiple open-market sales on March 9, 2026. The sales occurred across a series of transactions at per-share prices reported between roughly $158.61 and $170.20 (various weighted-average prices are shown for groups of trades), producing aggregate proceeds of approximately $8.21 million. The shares are held by Vinciarelli as Trustee of the Patrizio Vinciarelli Irrevocable Trust (dated 12/21/2012), set up for the benefit of his child.

Key Details

• Transaction date: March 9, 2026 (Form 4 filed March 11, 2026). Filing appears timely.
• Total shares sold: 50,000 shares across 12 reported sale line items.
• Aggregate proceeds: ~$8.21 million. Individual line prices ranged from $159.23 to $170.02 (some lines are weighted averages of multiple trade prices). Overall reported trade-price ranges across footnotes: ~$158.61 – $170.20.
• Notable footnotes: F1 — shares held in an irrevocable trust for a child; F2 — at least one sale was executed under a Rule 10b5-1 trading plan (adopted Nov 3, 2025); F3–F14 — many reported prices are weighted averages reflecting multiple transactions within stated price ranges.
• Shares owned after the transactions: not specified in the provided extract of the Form 4; see the full filing for post-transaction beneficial ownership details.
• Transaction type: Sales (S). Sales by insiders are often for personal or planning reasons; purchases are generally considered stronger signals of insider conviction.

Context
As a 10% owner, Vinciarelli is a large shareholder (not necessarily an executive), and these disposals may reflect portfolio management or trust needs rather than company-specific views. Several sales were executed under a 10b5-1 plan and reported as weighted-average prices across multiple trades; review the full Form 4 for the per-price breakdown if you need exact trade-level detail.