Form 4: Vicor CEO Patrizio Vinciarelli Executes Stock Sale

Vicor Corporation Chairman and CEO Patrizio Vinciarelli sold 19,300 shares of common stock via a Rule 10b5-1 trading plan.

Summary

• Chairman and CEO Patrizio Vinciarelli sold a total of 19,300 shares of Vicor Corporation common stock on May 28, 2026.
• The transactions were executed in multiple batches at weighted average prices ranging from $328.37 to $350.42 per share.
• Following these transactions, the reporting person maintains direct ownership of 8,828,090 shares.
• The sales were conducted pursuant to a pre-established Rule 10b5-1 trading plan adopted on February 26, 2026.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the transactions were conducted through a pre-arranged 10b5-1 plan, which is a standard administrative procedure for executive equity management.

Positives

• The sales were executed under a pre-planned Rule 10b5-1 program, which is a standard mechanism for executives to sell shares without triggering insider trading concerns.

Negatives

• The sale represents a reduction in the direct equity stake held by the company's Chairman and CEO.

Risks

• Significant insider selling can sometimes be perceived negatively by the market, potentially impacting short-term investor sentiment.

Future Outlook

No specific forward-looking guidance regarding company operations was provided in this filing.

Industry Context

StockSavvy.ai notes that executive stock sales under 10b5-1 plans are common practice for liquidity and diversification purposes and generally do not reflect a change in the executive's outlook on the company's long-term prospects.

Comparison to Industry Standards

• The use of Rule 10b5-1 plans is the industry standard for corporate executives to manage equity holdings while maintaining compliance with SEC regulations.

Related Party Transactions

• The reporting person serves as Trustee of the Patrizio Vinciarelli Irrevocable Trust, which holds 167,125 shares.

Stakeholder Impact

• Minimal impact expected as the sales were pre-planned and represent a small fraction of the CEO's total holdings.

Next Steps

• Continued monitoring of future Form 4 filings for further insider activity.

Key Dates

Keywords

Vicor, VICR, Insider Trading, Form 4, Patrizio Vinciarelli, Stock Sale, Rule 10b5-1