Insider Trading March 23, 2026

Vicor Chairman Disposes $7.9 Million in Stock; Transaction Executed Under 10b5-1 Plan

Patrizio Vinciarelli sold 40,967 shares on March 20, 2026, as the stock posts large annual gains but recent weekly weakness

By Ajmal Hussain VICR
Vicor Chairman Disposes $7.9 Million in Stock; Transaction Executed Under 10b5-1 Plan
VICR

Patrizio Vinciarelli, Vicor Corp's chairman and CEO, sold 40,967 shares of the company on March 20, 2026, for roughly $7.9 million under a pre-arranged Rule 10b5-1 plan. The company trades at a P/E of 66 and InvestingPro flags the shares as overvalued relative to its Fair Value estimate, while the stock has rallied 207% over the past year but slipped 11% in the past week.

Key Points

  • Insider sold 40,967 shares on March 20, 2026, for about $7.9 million
  • Post-sale ownership: 9,064,087 shares directly and 171,125 indirectly through a trust
  • Company valued at $7.69 billion, trading at P/E of 66 and flagged as overvalued by InvestingPro

Patrizio Vinciarelli, who serves as both chairman and chief executive officer of Vicor Corp (NASDAQ:VICR), executed a sale of 40,967 shares of the company's common stock on March 20, 2026, generating approximately $7.9 million in proceeds. The dispositions were made at weighted average prices that ranged from $174.6395 to $188.89 per share.

The transactions were carried out under a previously adopted Rule 10b5-1 trading arrangement, which Vinciarelli put in place on November 3, 2025. After completing these sales, his direct ownership of Vicor common stock stands at 9,064,087 shares; he additionally holds 171,125 shares indirectly through a trust.

Market context included in the same data set notes that Vicor's shares have appreciated 207% over the last 12 months, though they experienced an 11% decline in the trailing week. The company is sized at $7.69 billion and is trading at a price-to-earnings ratio of 66. InvestingPro analysis cited alongside the transaction indicates the stock is considered overvalued relative to its Fair Value estimate.

Investors seeking additional background on the valuation view can access supplementary InvestingPro content referenced in the company snapshot, which includes 18 additional InvestingPro Tips and a full Pro Research Report covering VICR. The available data points here are limited to the items disclosed in the company and InvestingPro materials.


Summary

Vicor's chairman and CEO, Patrizio Vinciarelli, sold 40,967 shares on March 20, 2026, under a Rule 10b5-1 plan for roughly $7.9 million. Post-sale holdings include 9,064,087 shares directly and 171,125 via a trust. The stock has seen a 207% gain over the past year but was down 11% in the previous week, and InvestingPro flags the name as overvalued versus Fair Value.


Key points

  • Insider transaction: Vinciarelli sold 40,967 shares on March 20, 2026, for about $7.9 million at weighted average prices between $174.6395 and $188.89 per share.
  • Ownership after sale: Direct holdings of 9,064,087 shares, plus 171,125 shares held indirectly through a trust.
  • Market and valuation context: Vicor is a $7.69 billion company trading at a P/E of 66, with InvestingPro indicating the stock is overvalued relative to its Fair Value estimate; the share price has risen 207% over the last year but fell 11% in the past week.

Risks and uncertainties

  • Valuation risk: InvestingPro analysis suggests the stock is overvalued relative to its Fair Value estimate, which may affect future return expectations.
  • Price volatility: The share price has shown significant movement, including a 207% gain year-over-year and an 11% dip in the most recent week, highlighting short-term volatility.
  • Limited interpretability of sale: The transactions were executed under a pre-arranged Rule 10b5-1 plan adopted November 3, 2025, which constrains conclusions that can be drawn about the insider's motives from the sale alone.

Note: The details above are drawn from the company's reported insider transaction data and InvestingPro's accompanying valuation and market metrics. No additional company developments or external analysis are asserted beyond those items.

Risks

  • Valuation concern: InvestingPro indicates VICR is overvalued relative to its Fair Value estimate
  • Price volatility: 207% gain over one year accompanied by an 11% decline in the last week
  • Interpretation limits: Sale executed under a Rule 10b5-1 plan adopted November 3, 2025, which constrains inferences about insider intent

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