VICR

SEC source: 0001193125-26-276979 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,547,490

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.2950 and $324.9300. 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 (15) to this Form 4.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 16

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,548,090

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F17 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $338.1900 and $338.2100.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 15

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,548,290

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F16 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $336.2000 and $336.2100.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 14

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,548,490

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F15 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.9600 and $335.4500.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 13

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,549,238

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F14 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $333.8800 and $334.8400.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 12

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,550,858

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F13 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $332.8000 and $333.7800.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 11

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,553,641

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.5900 and $332.0500.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 10

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,554,941

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.5000 and $331.3900.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 9

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,556,505

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $329.2850 and $330.2300.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 8

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,559,299

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.1500 and $329.0700.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 7

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,560,574

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $327.1200 and $328.0900.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 6

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,562,135

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $326.1000 and $327.0200.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,563,588

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $325.0500 and $326.0200.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,565,307

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.0500 and $325.0100.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,567,490

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $322.6900 and $322.8700.

SEC source: 0000901484-26-000026 · primary_doc.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,567,790

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $321.5400 and $322.5000. 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 (17) to this Form 4.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 18

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,568,090

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F19 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $341.6700 and $341.8000

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 17

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,568,490

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F18 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $340.2100 and $340.2300.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 16

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,568,690

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F17 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $339.1900 and $339.7300

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 15

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,569,590

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F16 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $338.0500 and $338.7300.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 14

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,570,308

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F15 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $336.5500 and $337.3050.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 13

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,570,708

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F14 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $334.7900 and $335.2300.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 12

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,571,308

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F13 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $332.2400 and $332.2500.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 11

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,571,508

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.2900 and $331.2500.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 10

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,571,913

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $329.2900 and $330.2700.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 9

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,574,809

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $328.2750 and $329.2600.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 8

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,576,209

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $327.0400 and $328.0000.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 7

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,578,110

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $325.8200 and $326.7200.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 6

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,580,994

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.7800 and $325.7700.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,582,764

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.7400 and $324.6300.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,585,509

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $322.5600 and $323.5400.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,586,510

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.9000 and $321.2850.

SEC source: 0000901484-26-000025 · primary_doc.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,586,910

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $319.6600 and $320.3700. 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: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 18

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,588,090

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F19 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $331.3500 and $332.0500.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 17

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,588,290

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F18 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $330.0500 and $330.0500.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 16

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,588,490

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F17 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $324.6300 and $324.9000.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 15

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,589,090

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F16 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $323.2400 and $323.7800.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 14

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,589,490

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F15 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $322.1900 and $323.1200.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 13

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,591,290

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F14 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $320.9500 and $321.8900.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 12

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,595,280

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F13 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $319.8900 and $320.8200.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 11

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,597,790

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $318.8300 and $318.8300.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 10

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,597,890

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $317.8300 and $318.7200.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 9

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,599,890

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $316.8200 and $317.8000.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 8

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,602,187

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $315.7800 and $316.7700.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 7

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,603,890

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $314.6900 and $315.5100.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 6

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,604,844

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $313.6900 and $314.6800.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,605,690

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $312.2350 and $312.9800.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,606,335

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.2000 and $312.1500.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,607,090

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $309.5100 and $309.7000.

SEC source: 0000901484-26-000024 · primary_doc.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,607,490

F2 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.5100 and $309.3400. 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.