Founder Patrizio Vinciarelli Files Intent to Sell $5.6M in Stock, Continuing Recent Sales Pattern
VICR has more than doubled off its 52-week low of $41.76.
Summary
Vicor's founder and officer, Patrizio Vinciarelli, filed a Form 144 to sell $5.6 million in common stock, extending a pattern of significant insider sales over the past three months.
Key Events · Ownership and Investor Activity · VICR
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Founder Files Intent to Sell
Patrizio Vinciarelli, a founder, officer, director, and 10% stockholder, filed a Form 144 indicating intent to sell 20,000 shares of common stock, valued at approximately $5.67 million.
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Continuation of Significant Selling Pattern
This filing extends a pattern of substantial insider selling by Vinciarelli, who has sold 798,900 shares totaling over $170 million in gross proceeds over the past three months, primarily through 10b5-1 plans.
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Ongoing Insider Distribution
The company's insider activity over the last 90 days shows a net distribution of nearly $200 million, with Vinciarelli being a primary contributor to this trend.
Analysis · VICR · Manufacturing
This Form 144 indicates Patrizio Vinciarelli, a founder, officer, director, and 10% stockholder, intends to sell an additional $5.6 million in company stock. This filing is part of a significant and ongoing pattern of insider selling by Vinciarelli, who has sold nearly $200 million in shares over the past 90 days. While the individual transaction is a small percentage of the company's large market capitalization, the consistent and substantial sales by a key insider, especially the founder, can be interpreted as a negative signal regarding long-term conviction.
How filings like this one have moved
In the 30 days to Sep 12, 2026, 29.6% of the 1872 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.19%. 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 $275.51 on NASDAQ in the Manufacturing sector, with a market capitalization of approximately $12.6B. 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.