Form 4: Vicor CEO Sells $9.5M in Stock via Pre-Arranged Plan

Vicor Corporation's Chairman and CEO, Patrizio Vinciarelli, sold 50,000 shares of common stock for approximately $9.54 million through a pre-arranged 10b5-1 trading plan.

Summary

• Patrizio Vinciarelli, Chairman and CEO, Director, and 10% Owner of Vicor Corporation (VICR), reported transactions.
• Vinciarelli sold a total of 50,000 shares of Vicor Common Stock on March 17, 2026.
• The sales were executed in multiple transactions at weighted average prices ranging from $185.7500 to $196.4100.
• The total value of the shares sold is approximately $9,535,962.54.
• These sales were conducted pursuant to a Rule 10b5-1 trading plan adopted by Vinciarelli on November 3, 2025.
• Following these transactions, Vinciarelli directly owns 9,208,163 shares of Common Stock.
• Additionally, 171,125 shares are indirectly held by Vinciarelli as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, for the benefit of his child.

Sentiment

Score: 6

Explanation: StockSavvy.ai views this as a neutral to slightly positive event. While it's an insider sale, the execution under a pre-arranged 10b5-1 plan mitigates concerns about opportunistic selling, suggesting a planned diversification rather than a lack of confidence.

Positives

• The sales were conducted under a pre-arranged Rule 10b5-1 trading plan, which provides an affirmative defense against insider trading allegations and demonstrates a structured approach to share divestment.

Negatives

• Insider selling, even when pre-arranged, can sometimes be perceived negatively by the market as it represents a reduction in an executive's direct stake in the company.

Risks

• The sale of a significant number of shares by a key executive, even under a 10b5-1 plan, could potentially lead to negative market sentiment or speculation regarding the company's future prospects, although the planned nature mitigates some of this risk.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction.

Industry Context

StockSavvy.ai notes that the use of Rule 10b5-1 trading plans is a standard practice among corporate executives to manage their personal stock holdings, diversify their portfolios, and avoid potential accusations of trading on material non-public information. Such plans are typically set up in advance and execute trades automatically based on pre-determined parameters, making these sales generally less indicative of management's immediate outlook on the company compared to unplanned, open-market sales.

Corporate Governance

Related Party Transactions

• 171,125 shares are held indirectly by Patrizio Vinciarelli as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of his child, indicating a related party holding.

Stakeholder Impact

• Shareholders: May view the planned sale as a routine diversification by a long-standing executive, but some might interpret it as a slight reduction in management's direct alignment with shareholder interests, despite the 10b5-1 plan.
• Regulatory Authorities: The use of a 10b5-1 plan demonstrates compliance with SEC regulations regarding insider trading, which is positive for regulatory oversight.

Key Dates

Recommendation

The sale by the CEO, while significant in value, was executed under a pre-arranged 10b5-1 plan, indicating a planned diversification rather than a reaction to immediate negative news. This reduces the bearish signal typically associated with insider selling. Given the planned nature and the executive's continued substantial direct and indirect holdings, a 'hold' recommendation is appropriate, advising investors to monitor future company performance and broader market trends rather than reacting solely to this planned transaction.

Keywords

VICOR, VICR, Patrizio Vinciarelli, Insider Trading, Stock Sale, Form 4, 10b5-1 Plan, CEO, Director, 10% Owner