VINCIARELLI PATRIZIO 4

What Happened
Patrizio Vinciarelli, a reported 10% owner of Vicor Corporation (VICR), sold a total of 5,924 shares in two open‑market/private sales on March 23, 2026. He sold 3,134 shares at $175.00 each for $548,450 and 2,790 shares at $176.00 each for $491,040, for combined gross proceeds of $1,039,490. The shares were held by Vinciarelli as trustee of an irrevocable trust for his child.

Key Details

• Transaction dates: March 23, 2026; Form 4 filed March 24, 2026 (timely).
• Sales: 3,134 shares @ $175.00 = $548,450 (F3); 2,790 shares @ $176.00 = $491,040 (F4).
• Total shares sold: 5,924; total proceeds: $1,039,490.
• Shares held in trust: sales executed by the reporting person as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012 (F1).
• Plan: Sales were effected pursuant to a Rule 10b5‑1 trading plan adopted November 3, 2025 (F2).
• Price reporting: prices shown are weighted averages; footnotes note transactions occurred at the stated single prices (F3, F4).
• Shares owned after transaction: not disclosed in the provided Form 4 excerpt.

Context
As a 10% owner (not necessarily an operating executive), Vinciarelli’s sales are institutional insider activity. The use of a prearranged 10b5‑1 plan indicates the trades were scheduled under an established plan rather than spontaneous market timing. Sales do not by themselves indicate company outlook; retail investors often view purchases as a stronger signal of insider bullishness.