Patrizio Vinciarelli, who serves as Chairman and Chief Executive Officer of Vicor Corp (NASDAQ:VICR), reported the sale of 5,924 shares of company stock on March 23, 2026, according to a Form 4 filed with the Securities and Exchange Commission.
The disposition was carried out in two separate transactions, with executed prices ranging from $175.00 to $176.00 per share. Proceeds from the sales totaled approximately $1,039,490.
The filing specifies that the sales were performed pursuant to a pre-arranged Rule 10b5-1 trading plan that Vinciarelli adopted on November 3, 2025. Rule 10b5-1 plans are documented trading arrangements that permit insiders to execute transactions under a pre-established schedule; the filing indicates these trades were made under that framework.
After the transactions were recorded, Vinciarelli's direct ownership in Vicor stood at 9,058,163 shares. The filing also notes he indirectly holds 171,125 additional shares in trust.
Market context
The insider sale occurred against a backdrop of notable stock-price volatility for VICR. The share price has risen 213% over the past year and was trading at $177.15 at the time of the filing. However, the shares have also recently experienced a significant pullback, declining nearly 12% over the last week. Vicor's market capitalization is stated as $7.92 billion.
Valuation note included in filing
The filing references an InvestingPro analysis, stating that VICR appears overvalued relative to its Fair Value estimate. It adds that investors can consult Pro Research Reports and 19 additional ProTips for VICR on the InvestingPro platform.
What the filing explicitly shows
- Sale date: March 23, 2026.
- Shares sold: 5,924 in two transactions.
- Price range: $175.00 to $176.00 per share.
- Gross proceeds: approximately $1,039,490.
- Trading plan: executed under a Rule 10b5-1 plan adopted November 3, 2025.
- Post-sale ownership: 9,058,163 shares directly owned; 171,125 shares indirectly owned in trust.
The Form 4 filing is the source for the transactional and ownership details reported here. The document and the InvestingPro valuation note together provide the factual basis for the sale and the contemporaneous market context.