Founder Patrizio Vinciarelli Files Intent to Sell Another $5.5M in Stock, Continuing Large-Scale Distribution
VICR has more than doubled off its 52-week low of $41.76.
Summary
Vicor's founder, Patrizio Vinciarelli, filed a Form 144 indicating intent to sell an additional $5.5 million in common stock, extending a pattern of significant insider selling that has totaled over $191 million in the past 90 days.
Key Events · Ownership and Investor Activity · VICR
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Proposed Stock Sale
Patrizio Vinciarelli, founder, director, and officer, intends to sell 20,000 shares of common stock, valued at approximately $5.51 million, with an approximate sale date of June 11, 2026.
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Ongoing Insider Distribution
This proposed sale is part of a continuous pattern of insider selling, with over $191 million in net sales by active insiders (primarily Vinciarelli) over the past 90 days, including $167.3 million already sold by Vinciarelli in the last three months.
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10b5-1 Plan
The sales are conducted under a pre-planned 10b5-1 trading plan adopted on February 26, 2026.
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Context of Recent Performance
The continued selling occurs despite Vicor reporting strong Q1 2026 financial results, including a 713.8% year-over-year net income increase, and recently raising Q2 revenue guidance.
Analysis · VICR · Manufacturing
This Form 144 filing by founder Patrizio Vinciarelli signals his continued systematic reduction of his stake in Vicor. While the individual proposed sale of $5.5 million is a small percentage of the company's large market cap, it is part of a much larger, ongoing distribution program that has seen over $191 million in sales from insiders (primarily Vinciarelli) in the last three months. This consistent selling by a key executive, even under a pre-planned 10b5-1 program, can create an overhang on the stock, despite the company's recent strong financial performance and raised guidance.
How filings like this one have moved
In the 30 days to Sep 13, 2026, 29.5% of the 1672 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.22%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, VICR was trading at $298.00 on NASDAQ in the Manufacturing sector, with a market capitalization of approximately $13.6B. The 52-week trading range was $41.76 to $361.89. This filing was assessed with negative market sentiment and an importance score of 7 out of 10.