Form 4: Vicor CEO Sells 20,000 Shares Under 10b5-1 Plan

Vicor Corporation's Chairman and CEO, Patrizio Vinciarelli, sold 20,000 shares of common stock on December 30, 2025, through a pre-arranged 10b5-1 trading plan.

Summary

• Patrizio Vinciarelli, Chairman and CEO of Vicor Corporation, reported the sale of 20,000 shares of common stock.
• The sales occurred on December 30, 2025, across three separate transactions.
• The shares were sold at weighted average prices of $112.4451, $113.2271, and $114.
• These sales were executed under a Rule 10b5-1 trading plan adopted by Mr. Vinciarelli on December 10, 2024.
• Following these transactions, Mr. Vinciarelli directly beneficially owns 9,710,046 shares of Common Stock.
• Additionally, 171,125 shares are indirectly held by the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, for which he is a Trustee.

Sentiment

Score: 5

Explanation: The sale of shares by the CEO, while a disposition, was conducted under a pre-arranged 10b5-1 plan, which typically reduces the negative signaling effect compared to an unplanned sale. It's a routine insider transaction for personal financial management.

Positives

• The sale was conducted under a pre-arranged Rule 10b5-1 trading plan, indicating a planned and systematic approach to share disposition rather than an immediate reaction to new information.

Negatives

• Insider selling, even under a 10b5-1 plan, can sometimes be perceived by investors as a lack of confidence in the company's near-term prospects, although this is often for personal financial planning or diversification.

Future Outlook

This filing does not contain forward-looking statements or guidance regarding the company's future outlook.

Industry Context

This filing reports a routine insider transaction and does not provide information relevant to broader industry trends or competitors.

Related Party Transactions

• 171,125 shares are held indirectly by the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of the child of the Reporting Person, for which Mr. Vinciarelli is a Trustee.

Stakeholder Impact

• Minor potential impact on shareholders due to the perception of insider selling, though mitigated by the 10b5-1 plan. No direct impact on employees, customers, suppliers, or creditors is indicated by this filing.

Key Dates

Keywords

Vicor Corporation, VICR, Patrizio Vinciarelli, insider trading, Form 4, common stock, share sale, 10b5-1 plan, CEO, director, 10% owner