Patrizio Vinciarelli, the chairman and chief executive officer of Vicor Corp (NASDAQ:VICR), moved to sell a block of his common stock on March 9, 2026. The transactions, split across multiple trades, totaled 49,990 shares and were executed at prices spanning $159.2269 to $170.023. The aggregate consideration for the sales came to $8,212,934.
The dispositions were made under a Rule 10b5-1 trading arrangement that Vinciarelli adopted on November 3, 2025. That pre-established plan governed the timing and execution of the March trades, according to the filing details disclosed.
Following the sales, Vinciarelli's direct ownership in Vicor stands at 9,519,813 shares. In addition to those directly held shares, he indirectly owns 171,125 shares that are held in trust.
Market context supplied alongside the transaction data notes the company's shares have since reached $178.08. Over the trailing 12 months the stock has produced a 251% return. The same analysis from InvestingPro also flags a valuation concern: it indicates Vicor may be overvalued when measured against its Fair Value estimate and places the company on its Most Overvalued list. The report assigns Vicor a market value of $7.9 billion.
What the filing shows
The filing documents a sizable insider sale carried out under a previously adopted 10b5-1 plan and quantifies the holdings remaining in both direct and indirect forms. It also pairs the transaction information with InvestingPro's valuation view and recent share-price performance.
Additional service disclosures
The report notes that InvestingPro subscribers can access 18 additional exclusive tips and Pro Research Reports for VICR and more than 1,400 other U.S. equities.