Insider Trading March 18, 2026

Vicor Chairman Executes $9.5M Stock Sale Under 10b5-1 Plan

Patrizio Vinciarelli disposes of multiple tranches on March 17, 2026 as shares trade well above historical levels

By Derek Hwang VICR
Vicor Chairman Executes $9.5M Stock Sale Under 10b5-1 Plan
VICR

Vicor Corp Chairman and CEO Patrizio Vinciarelli sold $9.5 million of company stock on March 17, 2026, under a prearranged Rule 10b5-1 trading plan. The transactions occurred at prices between $186.4171 and $196.41 per share. The stock has risen roughly 270% over the past year and is trading at $191.84 with a P/E of 74.66, with third-party analysis flagging the name as overvalued relative to its Fair Value estimate.

Key Points

  • Chairman and CEO Patrizio Vinciarelli sold $9.5 million of Vicor shares on March 17, 2026 under a Rule 10b5-1 plan.
  • Sales occurred in multiple tranches at prices between $186.4171 and $196.41 per share; the company provided a detailed breakdown of each tranche.
  • After the transactions, Vinciarelli directly owns 9,208,163 shares and indirectly holds 171,125 shares as trustee of the Patrizio Vinciarelli Irrevocable Trust.

Vicor Corp (NASDAQ:VICR) reported that Chairman and Chief Executive Officer Patrizio Vinciarelli sold a total of $9.5 million in company stock on March 17, 2026. The dispositions were carried out under a prearranged Rule 10b5-1 trading plan and were executed across multiple tranches at per-share prices ranging from $186.4171 to $196.41.

The company noted that the stock has climbed approximately 270% over the past 12 months and is currently quoted at $191.84, reflecting a price-to-earnings ratio of 74.66. According to InvestingPro analysis, the equity appears overvalued against its Fair Value estimate and is included on the Most Overvalued list.

The individual transactions recorded on March 17, 2026 were as follows:

Shares Sold Weighted Average Price
2,333 $186.4171
4,751 $187.1623
7,392 $188.4197
9,911 $189.2437
4,694 $190.7346
9,612 $191.6298
2,677 $192.4531
1,201 $193.4039
800 $194.3938
6,535 $196.0642
94 $196.41

After these transactions, Vinciarelli holds 9,208,163 shares directly. In addition, he indirectly holds 171,125 shares in his capacity as trustee of the Patrizio Vinciarelli Irrevocable Trust.

For investors seeking additional detail on VICRs valuation and performance metrics, a comprehensive Pro Research Report is available through InvestingPro, covering this company along with more than 1,400 other U.S. equities.


Context and market metrics

The sale coincides with a period of strong share-price appreciation for Vicor; the stock's year-over-year increase of roughly 270% places current trading well above where it stood 12 months earlier. The P/E ratio of 74.66 and third-party Fair Value analysis are noted as indicators contributing to the assessment that the stock is overvalued relative to the estimate used by InvestingPro.


Bottom line

Patrizio Vinciarelli executed a planned, rule-compliant selling program on March 17, 2026 that realized $9.5 million in proceeds across multiple tranches. Post-sale ownership remains substantial through both direct holdings and an irrevocable trust.

Risks

  • The stock is trading significantly higher than a year ago - up about 270% - which, combined with a P/E of 74.66, is cited by InvestingPro as a factor placing the stock on a Most Overvalued list - this may affect equity market sentiment and technology/electronics-related supplier sectors.
  • Insider sales executed under a Rule 10b5-1 plan can limit immediate interpretive clarity - investors may have limited visibility into the plans timing and intent, creating uncertainty for equity and corporate governance analysts.
  • Valuation metrics and third-party Fair Value assessments cited in the report may lead to differing interpretations among investors and analysts, introducing uncertainty for those assessing discovery and specialty component suppliers in the markets impacted by Vicor.

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