Vicor Corp ($VICR) Founder & CEO Files Form 144 to Sell $5.78M in Common Stock

Executive Summary

On October 1, 2026, Patrizio Vinciarelli, Founder, Director, Officer, and 10% Stockholder of Vicor Corporation ($VICR), filed a Form 144 notice disclosing an intention to sell 20,000 shares of common stock through Morgan Stanley Smith Barney LLC. The aggregate market value of the proposed transaction is approximately $5,778,800.00, implying a price of approximately $288.94 per share.

Key Transaction Details

• Filer: Patrizio Vinciarelli
• Role: Director, Officer, 10% Stockholder
• Shares to Sell: 20,000 common shares
• Total Market Value: $5,778,800.00
• Shares Outstanding: 34,389,014 shares (~0.058% of outstanding shares)
• Original Acquisition: Acquired on 11/10/1981 as Founder's shares directly from the issuer.
• Trading Plan: The proposed sale is executed pursuant to a Rule 10b5-1 trading plan adopted on February 26, 2026.

Recent Trading History

Over the preceding three months, the insider executed the following sales under the same 10b5-1 plan:

• 07/02/2026: 20,000 shares sold for gross proceeds of $6,377,605.00 (~$318.88/share)
• 07/06/2026: 700 shares sold for gross proceeds of $211,680.98 (~$302.40/share)

Market Impact & Significance

This filing is rated Medium Significance. While Patrizio Vinciarelli is the founder, CEO, and primary insider of Vicor Corporation, the proposed sale represents a very small portion of total shares outstanding (0.058%) and is conducted under a pre-established Rule 10b5-1 plan adopted months earlier, indicating structured liquidity rather than discretionary selling based on short-term market conditions.