VICR

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 10

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,124,955

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.2100 to $183.1800.

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 9

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,130,280

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.2000 to $182.1700.

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 8

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,132,663

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $179.5500 to $180.3100.

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 7

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,133,163

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.9100 to $178.0400.

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 6

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,133,763

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $176.4100 to $176.6300.

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 5

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,134,163

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.0000 to $175.9000.

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 4

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,134,963

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $174.0000 to $174.9700.

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 3

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,137,562

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.0000 to $173.9800.

SEC source: 0001193125-26-117370 · ownership.xml · nonDerivative · entry 2

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,149,824

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.0000 to $172.9700. 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 (19) to this Form 4.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 11

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,158,163

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.0500 to $201.0500.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 10

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,158,963

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200.0200 to $201.0000.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 9

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,160,833

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.0000 to $199.9800.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 8

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,165,433

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.8300 to $198.7200.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 7

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,172,201

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $196.8300 to $197.8200.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 6

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,179,282

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $195.8200 to $196.8100.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 5

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,185,788

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $194.8200 to $195.7600.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 4

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,192,893

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $193.8200 to $194.8100.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 3

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,199,357

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $192.8200 to $193.8100.

SEC source: 0001193125-26-115686 · ownership.xml · nonDerivative · entry 2

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,202,495

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $191.6700 to $192.4100. 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 (12) to this Form 4.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 12

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,208,163

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F13 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $196.4100 to $196.4100.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 11

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,208,257

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $195.4000 to $196.3300.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 10

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,214,792

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $194.1400 to $194.5600.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 9

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,215,592

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $193.1400 to $193.5000.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 8

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,216,793

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $192.1300 to $193.1100.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 7

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,219,470

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $191.1300 to $192.1200.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 6

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,229,082

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $190.1300 to $191.1200.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 5

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,233,776

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $188.8000 to $189.7500.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 4

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,243,687

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $187.7800 to $188.7700.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 3

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,251,079

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $186.7500 to $187.7400.

SEC source: 0001193125-26-114135 · ownership.xml · nonDerivative · entry 2

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,255,830

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.7500 to $186.7400. 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 (13) to this Form 4.

SEC source: 0001193125-26-113483 · ownership.xml · derivative · entry 6

McNamara Michael · CIK 0001545814 · Director · General Manager Mfg. Ops.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,257

Underlying: Common Stock · 5,506 shares

Expires 2030-05-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-26-113483 · ownership.xml · derivative · entry 5

McNamara Michael · CIK 0001545814 · Director · General Manager Mfg. Ops.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,666

Underlying: Common Stock · 1,668 shares

Expires 2029-04-25

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-26-113483 · ownership.xml · nonDerivative · entry 4

McNamara Michael · CIK 0001545814 · Director · General Manager Mfg. Ops.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,138

SEC source: 0001193125-26-113483 · ownership.xml · nonDerivative · entry 3

McNamara Michael · CIK 0001545814 · Director · General Manager Mfg. Ops.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,644

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-26-113483 · ownership.xml · nonDerivative · entry 2

McNamara Michael · CIK 0001545814 · Director · General Manager Mfg. Ops.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,138

SEC source: 0001193125-26-113483 · ownership.xml · nonDerivative · entry 1

McNamara Michael · CIK 0001545814 · Director · General Manager Mfg. Ops.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,806

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 11

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,258,163

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $189.6900 to $189.9100.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 10

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,258,563

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $188.4100 to $188.6800.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 9

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,259,363

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $187.3100 to $188.2500.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 8

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,260,664

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.9900 to $186.9600.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 7

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,267,864

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.8900 to $185.8800.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 6

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,280,918

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $183.8900 to $184.8800.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 5

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,289,440

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.8700 to $183.8600.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 4

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,304,460

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.8600 to $182.8500.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 3

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,307,163

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $179.0700 to $179.0700.

SEC source: 0001193125-26-111226 · ownership.xml · nonDerivative · entry 2

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,307,563

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $178.0600 to $178.0600. 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 (12) to this Form 4.

SEC source: 0001193125-26-108790 · ownership.xml · nonDerivative · entry 12

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,308,163

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F13 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.5700 to $176.1500.

SEC source: 0001193125-26-108790 · ownership.xml · nonDerivative · entry 11

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,309,663

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $174.5700 to $175.5500.

SEC source: 0001193125-26-108790 · ownership.xml · nonDerivative · entry 10

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,312,649

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $173.5100 to $174.5000.

SEC source: 0001193125-26-108790 · ownership.xml · nonDerivative · entry 9

VINCIARELLI PATRIZIO · CIK 0000901484 · Director · Chairman and CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,316,363

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 3, 2025.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.5100 to $173.1700.