<div id="readability-page-1"><div><p><span>Vinciarelli Patrizio Chairman of the Board of Vicor Corp [VICR] filed a Form 4 on December 12, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:</span></p><div><table><tbody><tr><td><span>Date</span></td><td><span>11/12/25-12/11/25</span></td></tr><tr><td><span>Transaction</span></td><td><span>Planned Sale(1)</span></td></tr><tr><td><span>Shares</span></td><td><span>21,900</span></td></tr><tr><td><span>Price</span></td><td><span>$100.87</span></td></tr><tr><td><span>Value</span></td><td><span>$2,209,127</span></td></tr></tbody></table></div><p><span>Ending Holdings: 9,999,488 (9,828,363 - Direct, 171,125 - Indirect)</span></p><ul><li><span>(1)</span></li><li><span>Executed pursuant to a prearranged trading plan (10b5-1).</span></li></ul><p><span>For a free trial, or to learn more about our insider trading analysis and data services, please visit http://www.washingtonservice.com or contact us at (301) 913-5100 or send an email to info@washingtonservice.com.</span></p><p><span>Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data.</span></p><span> </span></div></div>

VICR

<p>Vicor Corp's Chairman, Vinciarelli Patrizio, sold 21,900 shares worth $2.2 million under a prearranged trading plan. The transaction was disclosed in a Form 4 filed with the SEC on December 12, 2025. Vinciarelli's ending holdings are 9,999,488 shares.</p>

Chmn Vinciarelli Sells 21,900 ($2.2M) Of Vicor Corp [VICR]