Philip D. Davies - 05 Mar 2026 Form 4 Insider Report for VICOR CORP (vicr)

Role
VP Global Sales & Marketing, Director
Signature
/s/Quentin A. Fendelet Attorney in fact for Philip D. Davies
Issuer symbol
vicr
Transactions as of
05 Mar 2026
Net transactions value
-$1,027,829
Form type
4
Filing time
09 Mar 2026, 16:08:44 UTC
Previous filing
08 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Davies Philip D VP Global Sales & Marketing, Director 25 FRONTAGE RD., ANDOVER /s/Quentin A. Fendelet Attorney in fact for Philip D. Davies 05 Mar 2026 0001512868

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction vicr Common Stock Options Exercise +1,920 +100% $41.61* 3,840 05 Mar 2026 Direct
transaction vicr Common Stock Options Exercise +2,585 +67% $60.61* 6,425 05 Mar 2026 Direct
transaction vicr Common Stock Options Exercise +914 +14% $75.43* 7,339 05 Mar 2026 Direct
transaction vicr Common Stock Sale $17,718 -100 -1.4% $177.18 7,239 05 Mar 2026 Direct F1, F2
transaction vicr Common Stock Sale $125,567 -700 -9.7% $179.38 6,539 05 Mar 2026 Direct F1, F3
transaction vicr Common Stock Sale $109,404 -607 -9.3% $180.24 5,932 05 Mar 2026 Direct F1, F4
transaction vicr Common Stock Sale $126,679 -698 -12% $181.49 5,234 05 Mar 2026 Direct F1, F5
transaction vicr Common Stock Sale $18,217 -100 -1.9% $182.17 5,134 05 Mar 2026 Direct F1, F6
transaction vicr Common Stock Sale $18,551 -100 -1.9% $185.51 5,034 05 Mar 2026 Direct F1, F7
transaction vicr Common Stock Sale $56,177 -300 -6% $187.26 4,734 05 Mar 2026 Direct F1, F8
transaction vicr Common Stock Sale $56,762 -300 -6.3% $189.21 4,434 05 Mar 2026 Direct F1, F9
transaction vicr Common Stock Sale $57,936 -300 -6.8% $193.12 4,134 05 Mar 2026 Direct F1, F10
transaction vicr Common Stock Sale $58,494 -300 -7.3% $194.98 3,834 05 Mar 2026 Direct F1, F11
transaction vicr Common Stock Sale $19,645 -100 -2.6% $196.45 3,734 05 Mar 2026 Direct F1, F12
transaction vicr Common Stock Sale $302,024 -1,514 -41% $199.49 2,220 05 Mar 2026 Direct F1, F13
transaction vicr Common Stock Sale $60,655 -300 -14% $202.18 1,920 05 Mar 2026 Direct F1, F14

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction vicr Non Qualified Stock Option Options Exercise -1,920 -11% $0.000000* 15,358 05 Mar 2026 Common Stock 1,920 $41.61 Direct F15
transaction vicr Non Qualified Stock Option Options Exercise -2,585 -25% $0.000000* 7,752 05 Mar 2026 Common Stock 2,585 $60.61 Direct F15
transaction vicr Non Qualified Stock Option Options Exercise -914 -33% $0.000000* 1,827 05 Mar 2026 Common Stock 914 $75.43 Direct F15
* 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 This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.
F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.1800 to $177.1800.
F3 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $178.7900 to $179.7700.
F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $180.0500 to $181.0100.
F5 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.1600 to $181.9400.
F6 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.1700 to $182.1700.
F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.5100 to $185.5100.
F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $186.9200 to $187.8800.
F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $189.0600 to $189.4800.
F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $192.9800 to $193.1900
F11 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $194.9500 to $195.0000.
F12 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $196.4500 to $196.4500.
F13 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.4200 to $199.7200.
F14 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.1100 to $202.2600
F15 Options expire 2 years from each date of vesting.