Patrizio Vinciarelli - 23 Dec 2025 Form 4 Insider Report for VICOR CORP (VICR)

Signature
/s/Quentin A. Fendelet Attorney in Fact for Patrizio Vinciarelli
Issuer symbol
VICR
Transactions as of
23 Dec 2025
Net transactions value
-$2,155,899
Form type
4
Filing time
23 Dec 2025, 16:59:02 UTC
Previous filing
23 Dec 2025
Next filing
29 Dec 2025

Reporting Owners (1)

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 23 Dec 2025 0000901484

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction VICR Common Stock Sale $328,688 -3,084 -0.03% $106.58 9,785,279 23 Dec 2025 Direct F2
transaction VICR Common Stock Sale $890,555 -8,276 -0.08% $107.61 9,777,003 23 Dec 2025 Direct F2
transaction VICR Common Stock Sale $936,655 -8,640 -0.09% $108.41 9,768,363 23 Dec 2025 Direct F2
holding VICR Common Stock 171,125 23 Dec 2025 See footnote F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

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).

Explanation of Responses:

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 December 10, 2024.