Vicor Corp Director & Officer Files Form 144 to Sell $2.66M Under 10b5-1 Plan

Executive Summary

On October 1, 2026, Philip D Davies, a Director and Officer of Vicor Corporation (NASDAQ: VICR), filed a Form 144 notice proposing the sale of 9,217 shares of common stock with an aggregate market value of approximately $2.66 million. The shares are to be acquired upon the exercise of stock options.

Transaction Details

• Issuer: Vicor Corporation (CIK: 0000751978)
• Insider: Philip D Davies (Director / Officer)
• Shares Proposed for Sale: 9,217 shares
• Estimated Aggregate Market Value: $2,663,159.98 (~$288.94 per share)
• Broker: Morgan Stanley Smith Barney LLC Executive Financial Services
• Approximate Sale Date: October 1, 2026
• Shares Outstanding: 34,389,014 shares
• Acquisition Nature: Option exercise funded via cash

Trading Plan & Prior Activity

• 10b5-1 Plan: The proposed transactions are executed pursuant to a pre-scheduled Rule 10b5-1 trading plan adopted on November 21, 2025.
• Past 3 Months Sales:
  • September 1, 2026: 3,073 shares sold for gross proceeds of $546,084.08.
  • August 3, 2026: 3,072 shares sold for gross proceeds of $650,307.69.

Market & Governance Impact

The proposed sale represents less than 0.03% of total common shares outstanding. Given that this transaction reflects routine option exercise activity governed by a pre-established 10b5-1 trading plan adopted nearly a year prior, market significance is assessed as Low.