Form 4: Vicor CEO Sells Shares Under Pre-Arranged 10b5-1 Plan
Insider Transaction Report
Vicor Corporation's Chairman and CEO, Patrizio Vinciarelli, sold 32,400 shares of common stock in late December 2025, as part of a pre-arranged Rule 10b5-1 trading plan.
Summary
- Patrizio Vinciarelli, Chairman and CEO of Vicor Corporation, sold a total of 32,400 shares of common stock.
- The sales occurred on December 24, 2025, and December 26, 2025.
- The shares were sold at prices ranging from $108.732 to $111 per share.
- These transactions were executed under a Rule 10b5-1 trading plan adopted on December 10, 2024.
- Following these sales, Mr. Vinciarelli directly beneficially owns 9,735,963 shares of common stock.
- An additional 171,125 shares are indirectly held by the Patrizio Vinciarelli Irrevocable Trust.
Sentiment
Score: 5
Explanation: The sale of shares by a CEO is generally neutral when executed under a pre-arranged 10b5-1 plan, as it indicates a planned liquidity event rather than a reaction to new information. Without additional context, it doesn't signal strong positive or negative sentiment.
Negatives
- Insider selling, even under a pre-arranged plan, can sometimes be perceived negatively by the market, though the impact is mitigated by the 10b5-1 plan.
Related Party Transactions
- Patrizio Vinciarelli indirectly holds 171,125 shares as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of his child.
Stakeholder Impact
- Shareholders may observe a slight increase in available shares in the market, but the impact is generally minimal given the pre-scheduled nature of the sales.
Key Dates
| Date | Description |
|---|---|
| 12/21/2012 | Date of Patrizio Vinciarelli Irrevocable Trust U/A establishment. |
| 12/10/2024 | Date Rule 10b5-1 trading plan was adopted by the reporting person. |
| 12/24/2025 | Transaction date for sales of 9,197 and 3,203 shares of common stock. |
| 12/26/2025 | Transaction date for sales of 15,700 and 4,300 shares of common stock. |
| 12/29/2025 | Date the Form 4 was signed and filed. |
Recommendation
holdThe insider sales by the CEO were conducted under a pre-arranged 10b5-1 trading plan, which typically signals a planned liquidity event rather than a change in management's outlook on the company's prospects. This type of transaction is generally considered neutral and does not provide a strong basis for a 'buy' or 'sell' recommendation. Investors should 'hold' and look for more substantive operational or financial news to inform their investment decisions.
Keywords
Vicor Corporation, VICR, Patrizio Vinciarelli, Insider Trading, Form 4, Stock Sale, 10b5-1 Plan, CEO, Director, Common Stock
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