Patrizio Vinciarelli - 17 Mar 2026 Form 4 Insider Report for VICOR CORP (VICR)

Role
Chairman and CEO, Director, 10%+ Owner
Signature
/s/Kemble D. Morrison. Attorney in fact for Patrizio Vinciarelli
Issuer symbol
VICR
Transactions as of
17 Mar 2026
Net transactions value
-$9,532,498
Form type
4
Filing time
18 Mar 2026, 16:40:42 UTC
Previous filing
17 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
VINCIARELLI PATRIZIO Chairman and CEO, Director, 10%+ Owner C/O VICOR CORPORATION, 25 FRONTAGE RD., ANDOVER /s/Kemble D. Morrison. Attorney in fact for Patrizio Vinciarelli 18 Mar 2026 0000901484

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction VICR Common Stock Sale $434,911 -2,333 -0.03% $186.42 9,255,830 17 Mar 2026 Direct F2, F3
transaction VICR Common Stock Sale $889,208 -4,751 -0.05% $187.16 9,251,079 17 Mar 2026 Direct F2, F4
transaction VICR Common Stock Sale $1,392,798 -7,392 -0.08% $188.42 9,243,687 17 Mar 2026 Direct F2, F5
transaction VICR Common Stock Sale $1,875,594 -9,911 -0.11% $189.24 9,233,776 17 Mar 2026 Direct F2, F6
transaction VICR Common Stock Sale $895,308 -4,694 -0.05% $190.73 9,229,082 17 Mar 2026 Direct F2, F7
transaction VICR Common Stock Sale $1,841,946 -9,612 -0.1% $191.63 9,219,470 17 Mar 2026 Direct F2, F8
transaction VICR Common Stock Sale $515,197 -2,677 -0.03% $192.45 9,216,793 17 Mar 2026 Direct F2, F9
transaction VICR Common Stock Sale $232,278 -1,201 -0.01% $193.40 9,215,592 17 Mar 2026 Direct F2, F10
transaction VICR Common Stock Sale $155,515 -800 -0.01% $194.39 9,214,792 17 Mar 2026 Direct F2, F11
transaction VICR Common Stock Sale $1,281,280 -6,535 -0.07% $196.06 9,208,257 17 Mar 2026 Direct F2, F12
transaction VICR Common Stock Sale $18,463 -94 -0% $196.41 9,208,163 17 Mar 2026 Direct F2, F13
holding VICR Common Stock 171,125 17 Mar 2026 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 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 $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.
F4 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.
F5 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.
F6 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.
F7 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.
F8 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.
F9 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.
F10 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.
F11 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.
F12 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.
F13 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.