Form 4: Vicor CEO Sells $9.1M in Stock Under 10b5-1 Plan

Vicor Corporation's Chairman and CEO, Patrizio Vinciarelli, sold 50,000 shares of common stock for approximately $9.1 million through a pre-arranged 10b5-1 trading plan.

Summary

• Patrizio Vinciarelli, Chairman and CEO, Director, and 10% Owner of Vicor Corporation (VICR), reported sales of common stock.
• A total of 50,000 shares of common stock were sold on March 25, 2026.
• The sales were executed at weighted average prices ranging from $181.5698 to $186.0000 per share.
• The total value of the shares sold amounts to approximately $9,187,611.49.
• These transactions were conducted pursuant to a Rule 10b5-1 trading plan adopted by Mr. Vinciarelli on November 3, 2025.
• Following these transactions, Mr. Vinciarelli directly beneficially owns 8,984,984 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, for the benefit of his child.

Sentiment

Score: 6

Explanation: StockSavvy.ai views this as a neutral to slightly positive event. While insider selling can sometimes be perceived negatively, the execution under a 10b5-1 plan suggests a pre-planned portfolio management strategy rather than a reaction to adverse company-specific news, thus reducing any negative implications.

Future Outlook

NA

Industry Context

StockSavvy.ai notes that insider sales, particularly by high-ranking executives, can sometimes be viewed with caution by the market. However, the disclosure that these sales were made pursuant to a pre-arranged Rule 10b5-1 trading plan typically mitigates concerns, as such plans are established in advance and are not indicative of immediate sentiment regarding the company's short-term prospects. This is a routine disclosure for executives managing personal portfolios.

Stakeholder Impact

• Shareholders: May observe the sale as a routine portfolio management activity by a key executive, especially given the 10b5-1 plan. Without the plan, it might raise questions about management's confidence.

Key Dates

Recommendation

The reported insider sales by Vicor's CEO, while significant in value, were conducted under a pre-established Rule 10b5-1 trading plan. This indicates a planned divestment strategy rather than a reaction to new, material information, thereby neutralizing much of the potential negative sentiment typically associated with insider selling. The filing itself does not provide new operational or financial data to alter the fundamental investment thesis for Vicor. Therefore, a 'hold' recommendation is appropriate, maintaining current positions while awaiting further company-specific or market-wide developments.

Keywords

Vicor Corporation, VICR, Patrizio Vinciarelli, Insider Selling, Form 4, 10b5-1 Plan, Common Stock, Beneficial Ownership