Form 4: Vicor CEO Sells Shares Under Pre-Arranged 10b5-1 Plan

Vicor Corporation's Chairman and CEO, Patrizio Vinciarelli, sold 20,000 shares of common stock on December 22, 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 22, 2025, across three separate transactions.
• The shares were sold at weighted average prices of $104.9823, $105.237, and $106.76.
• These transactions were executed pursuant to a Rule 10b5-1 trading plan adopted by Mr. Vinciarelli on December 10, 2024.
• Following these sales, Mr. Vinciarelli directly beneficially owns 9,788,363 shares of common stock.
• Additionally, 171,125 shares are indirectly beneficially owned by Mr. Vinciarelli as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of his child.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While it's an insider sale, it was conducted under a pre-arranged 10b5-1 plan, which indicates a planned diversification or liquidity event rather than a reaction to new, negative information. The amount sold is not exceptionally large relative to the CEO's total holdings.

Negatives

• Insider selling, even under a pre-arranged plan, can sometimes be perceived negatively by investors, though the impact is often mitigated by the 10b5-1 plan disclosure.

Future Outlook

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

Industry Context

This Form 4 filing reports a routine insider transaction under a pre-arranged trading plan, which is a common practice among executives for personal financial planning and diversification. It does not provide specific insights into broader industry trends or competitive positioning.

Stakeholder Impact

• Shareholders: May observe the CEO's sale as a routine personal financial management activity, given the 10b5-1 plan, but could also interpret it as a slight negative signal if unaware of the plan's nature.

Key Dates

Recommendation

This Form 4 filing details a pre-scheduled insider sale by the CEO. Such transactions, especially when executed under a Rule 10b5-1 plan, are typically for personal financial planning and diversification and do not inherently signal a change in the company's fundamental outlook. The volume of shares sold is not significant enough to warrant a strong buy or sell recommendation based solely on this filing. Investors should consider broader company fundamentals and market conditions.

Keywords

Vicor Corporation, VICR, Patrizio Vinciarelli, Insider Sale, Form 4, 10b5-1 Plan, Common Stock, CEO, Director, 10% Owner