Fendelet Quentin A. 4

What Happened
Quentin A. Fendelet, Corporate Vice President and Chief Accounting Officer of Vicor Corp. (VICR), exercised stock options to acquire 2,000 shares at $71.74 each (cost $143,480) on March 2, 2026. On the same date he sold a total of 2,299 shares in open-market transactions (2,000 shares and 299 shares) at $204.72 each, generating proceeds of $409,442 and $61,212 respectively (total sales $470,654). The filing also reports a separate exercise/conversion entry for 2,000 shares at $0.00 (listed as a derivative disposition).

Key Details

• Transaction date: 2026-03-02; filing date: 2026-03-03 (timely filing).
• Option exercise (code M): 2,000 shares acquired at $71.74 = $143,480.
• Open-market sales (code S): 2,000 shares @ $204.72 = $409,442; 299 shares @ $204.72 = $61,212 (total sales $470,654).
• Derivative entry: 2,000 shares recorded as disposed at $0.00 (code M) in the same filing.
• Shares owned after the transactions: not specified in the provided data.
• No footnotes (e.g., 10b5-1, tax withholding details) were provided in the supplied summary.

Context
The sequence—exercising options and selling shares the same day—often reflects an immediate sale of exercised shares (cashless exercise or same-day disposition). The separate 2,000-share derivative line at $0.00 is recorded with zero proceeds in the filing; such entries can reflect net share settlement or withholding but the filing supplied here does not include explanatory footnotes. All information above is factual from the Form 4 filing; it does not attempt to infer the insider’s motivations.