| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| VINCIARELLI PATRIZIO | Chairman and CEO, Director, 10%+ Owner | C/O VICOR CORPORATION, 25 FRONTAGE ROAD, ANDOVER | /s/Quentin A. Fendelet. Attorney in fact for Patrizio Vinciarelli | 09 Mar 2026 | 0000901484 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | vicr | Common Stock | Sale | $194,572 | -1,100 | -0.01% | $176.88 | 9,657,063 | 05 Mar 2026 | Direct | F2, F3 |
| transaction | vicr | Common Stock | Sale | $103,799 | -584 | -0.01% | $177.74 | 9,656,479 | 05 Mar 2026 | Direct | F2, F4 |
| transaction | vicr | Common Stock | Sale | $688,596 | -3,850 | -0.04% | $178.86 | 9,652,629 | 05 Mar 2026 | Direct | F2, F5 |
| transaction | vicr | Common Stock | Sale | $1,819,701 | -10,120 | -0.1% | $179.81 | 9,642,509 | 05 Mar 2026 | Direct | F2, F6 |
| transaction | vicr | Common Stock | Sale | $1,243,560 | -6,882 | -0.07% | $180.70 | 9,635,627 | 05 Mar 2026 | Direct | F2, F7 |
| transaction | vicr | Common Stock | Sale | $866,468 | -4,764 | -0.05% | $181.88 | 9,630,863 | 05 Mar 2026 | Direct | F2, F8 |
| transaction | vicr | Common Stock | Sale | $48,655 | -266 | -0% | $182.91 | 9,630,597 | 05 Mar 2026 | Direct | F2, F9 |
| transaction | vicr | Common Stock | Sale | $64,893 | -353 | -0% | $183.83 | 9,630,244 | 05 Mar 2026 | Direct | F2, F10 |
| transaction | vicr | Common Stock | Sale | $181,754 | -981 | -0.01% | $185.27 | 9,629,263 | 05 Mar 2026 | Direct | F2, F11 |
| transaction | vicr | Common Stock | Sale | $298,739 | -1,600 | -0.02% | $186.71 | 9,627,663 | 05 Mar 2026 | Direct | F2, F12 |
| transaction | vicr | Common Stock | Sale | $282,907 | -1,503 | -0.02% | $188.23 | 9,626,160 | 05 Mar 2026 | Direct | F2, F13 |
| transaction | vicr | Common Stock | Sale | $377,519 | -1,997 | -0.02% | $189.04 | 9,624,163 | 05 Mar 2026 | Direct | F2, F14 |
| transaction | vicr | Common Stock | Sale | $76,015 | -400 | -0% | $190.04 | 9,623,763 | 05 Mar 2026 | Direct | F2, F15 |
| transaction | vicr | Common Stock | Sale | $191,289 | -1,000 | -0.01% | $191.29 | 9,622,763 | 05 Mar 2026 | Direct | F2, F16 |
| transaction | vicr | Common Stock | Sale | $212,090 | -1,100 | -0.01% | $192.81 | 9,621,663 | 05 Mar 2026 | Direct | F2, F17 |
| transaction | vicr | Common Stock | Sale | $77,432 | -400 | -0% | $193.58 | 9,621,263 | 05 Mar 2026 | Direct | F2, F18 |
| transaction | vicr | Common Stock | Sale | $272,901 | -1,400 | -0.01% | $194.93 | 9,619,863 | 05 Mar 2026 | Direct | F2, F19 |
| transaction | vicr | Common Stock | Sale | $157,083 | -800 | -0.01% | $196.35 | 9,619,063 | 05 Mar 2026 | Direct | F2, F20 |
| transaction | vicr | Common Stock | Sale | $239,945 | -1,212 | -0.01% | $197.97 | 9,617,851 | 05 Mar 2026 | Direct | F2, F21 |
| transaction | vicr | Common Stock | Sale | $775,015 | -3,888 | -0.04% | $199.34 | 9,613,963 | 05 Mar 2026 | Direct | F2, F22 |
| transaction | vicr | Common Stock | Sale | $359,136 | -1,795 | -0.02% | $200.08 | 9,612,168 | 05 Mar 2026 | Direct | F2, F23 |
| transaction | vicr | Common Stock | Sale | $254,329 | -1,265 | -0.01% | $201.05 | 9,610,903 | 05 Mar 2026 | Direct | F2, F24 |
| transaction | vicr | Common Stock | Sale | $331,520 | -1,640 | -0.02% | $202.15 | 9,609,263 | 05 Mar 2026 | Direct | F2, F25 |
| transaction | vicr | Common Stock | Sale | $223,362 | -1,100 | -0.01% | $203.06 | 9,608,163 | 05 Mar 2026 | Direct | F2, F26 |
| holding | vicr | Common Stock | 171,125 | 05 Mar 2026 | See footnote | F1 |
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
| Id | Content |
|---|---|
| F1 | These shares are held by the reporting person as Trustee of the Patrizio Vinciarelli Irrevocable Trust U/A Dated 12/21/2012, established for the benefit of the child of the reporting person. |
| F2 | This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025. |
| F3 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $176.2600 to $177.2500. The reporting person undertakes to provide to Vicor Corporation, any security holder of Vicor Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3) through (26) to this Form 4. |
| F4 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.2900 to $178.2500 |
| F5 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $178.3000 to $179.2900. |
| F6 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $179.3000 to $180.2900. |
| F7 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $180.3000 to $181.2700 |
| F8 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.3400 to $182.2000. |
| F9 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.4900 to $183.3900. |
| F10 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $183.5200 to $184.5100. |
| F11 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.5800 to $185.5300. |
| F12 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $186.1700 to $187.1200. |
| F13 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $187.6700 to $188.6500. |
| F14 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $188.6900 to $189.5000. |
| F15 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $189.8000 to $190.6900. |
| F16 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $191.0900 to $191.3900 |
| F17 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $192.2100 to $193.1800 |
| F18 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $193.2200 to $193.7000. |
| F19 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $194.2300 to $195.0000. |
| F20 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $196.0000 to $196.4500. |
| F21 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.6700 to $198.6400. |
| F22 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $198.7000 to $199.6400. |
| F23 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.7100 to $200.6900. |
| F24 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200.7100 to $201.6600. |
| F25 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.7200 to $202.7100. |
| F26 | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.7600 to $203.2400. |