VICOR (VICR) director D'Amico sells 7,512 shares and exercises 7,512 options

Q: What insider transactions did VICR director Andrew D'Amico report?

Andrew D'Amico reported open-market sales of 7,512 VICOR CORP (VICR) shares and exercises of options for 7,512 shares of Common Stock on May 4, 2026. These trades combined option exercises with same-day share sales.

Q: At what prices did Andrew D'Amico sell VICR shares in this filing?

D'Amico’s reported VICR share sales occurred at weighted average prices generally between $244.27 and $267.62 per share. Footnotes note multiple trades within narrow ranges, each disclosed as a single averaged price for reporting purposes.

Q: Were Andrew D'Amico’s VICR stock sales pre-planned under Rule 10b5-1?

Yes. A footnote states the sales were made under a Rule 10b5-1 trading plan adopted on September 12, 2024. Such plans are pre-arranged trading programs that schedule transactions in advance, reducing the significance of short-term market timing.

Q: How many VICR shares did Andrew D'Amico acquire through option exercises?

He exercised options to acquire 7,512 VICR Common Stock shares on May 4, 2026. The filing shows two option series converted: 2,916 shares at an exercise price of $41.61 and 4,596 shares at $33.96 per share.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

VICOR CORP director Andrew D'Amico reported sizeable insider trading activity in company stock. On May 4, 2026, he executed open-market sales totaling 7,512 shares of Common Stock at prices generally between $244.27 and $267.62, under a pre-arranged Rule 10b5-1 trading plan adopted on September 12, 2024.

On the same date, he exercised stock options to acquire 7,512 shares of Common Stock at exercise prices of $41.61 and $33.96 per share. Following these transactions, he directly held 4,596 shares of VICOR CORP Common Stock, with no remaining derivative positions shown in this filing.

Insider Trade Summary 10b5-1

Net Seller: 7,512 shares ($1,899,694)

Net Sell 16 txns

Insider D'Amico Andrew

Role null

Sold 7,512 shs ($1.90M)

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	4,596	$0.00	--
Exercise	Non Qualified Stock Option	2,916	$0.00	--
Exercise	Common Stock	4,596	$33.96	$156K
Exercise	Common Stock	2,916	$41.61	$121K
Sale	Common Stock	200	$244.295	$49K
Sale	Common Stock	100	$246.76	$25K
Sale	Common Stock	200	$247.905	$50K
Sale	Common Stock	200	$249.835	$50K
Sale	Common Stock	1,943	$251.0759	$488K
Sale	Common Stock	1,469	$252.2003	$370K
Sale	Common Stock	595	$253.6082	$151K
Sale	Common Stock	868	$254.353	$221K
Sale	Common Stock	1,337	$255.4454	$342K
Sale	Common Stock	300	$256.2733	$77K
Sale	Common Stock	200	$257.195	$51K
Sale	Common Stock	100	$267.62	$27K

Holdings After Transaction: Non Qualified Stock Option — 13,788 shares (Direct, null); Common Stock — 4,596 shares (Direct, null)

Footnotes (1)

This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $244.2700 to $244.3200. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $246.7600 to $246.7600. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $247.8300 to $247.9800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $249.7100 to $249.9600. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $250.7300 to $251.6100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $251.7900 to $252.4800. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $252.9300 to $253.9100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $253.9500 to $254.9300. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $255.0000 to $255.9900. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $256.0200 to $256.6500. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $257.1800 to $257.2100. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $267.6200 to $267.6200. Options expire 2 years from each date of vesting.

Key Figures

Shares sold: 7,512 shares Shares acquired via options: 7,512 shares Sale price range: $244.27–$267.62 per share +2 more

5 metrics

Shares sold 7,512 shares Open-market sales of VICOR Common Stock on May 4, 2026

Shares acquired via options 7,512 shares Option exercises converting into VICOR Common Stock on May 4, 2026

Sale price range $244.27–$267.62 per share Weighted average price ranges from Form 4 footnotes

Option exercise prices $41.61 and $33.96 per share Exercise prices for Non Qualified Stock Options

Shares owned after transactions 4,596 shares Direct VICOR Common Stock holdings following May 4, 2026 trades

Key Terms

Rule 10b5-1 trading plan, Non Qualified Stock Option, weighted average price, derivative security

4 terms

Rule 10b5-1 trading plan financial

"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Non Qualified Stock Option financial

"security_title: Non Qualified Stock Option"

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Form 4 Insider Transactions: What Each Field Means →

05/05/2026 - 11:28 AM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

D'Amico Andrew

(Last)

(First)

(Middle)

25 FRONTAGE RD.

(Street)

ANDOVER

MASSACHUSETTS

01810

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
VICOR CORP [ vicr ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/04/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/04/2026		M		4,596	A	$33.96	4,596	D
Common Stock	05/04/2026		M		2,916	A	$41.61	7,512	D
Common Stock	05/04/2026		S⁽¹⁾		200	D	$244.295⁽²⁾	7,312	D
Common Stock	05/04/2026		S⁽¹⁾		100	D	$246.76⁽³⁾	7,212	D
Common Stock	05/04/2026		S⁽¹⁾		200	D	$247.905⁽⁴⁾	7,012	D
Common Stock	05/04/2026		S⁽¹⁾		200	D	$249.835⁽⁵⁾	6,812	D
Common Stock	05/04/2026		S⁽¹⁾		1,943	D	$251.0759⁽⁶⁾	4,869	D
Common Stock	05/04/2026		S⁽¹⁾		1,469	D	$252.2003⁽⁷⁾	3,400	D
Common Stock	05/04/2026		S⁽¹⁾		595	D	$253.6082⁽⁸⁾	2,805	D
Common Stock	05/04/2026		S⁽¹⁾		868	D	$254.353⁽⁹⁾	1,937	D
Common Stock	05/04/2026		S⁽¹⁾		1,337	D	$255.4454⁽¹⁰⁾	600	D
Common Stock	05/04/2026		S⁽¹⁾		300	D	$256.2733⁽¹¹⁾	300	D
Common Stock	05/04/2026		S⁽¹⁾		200	D	$257.195⁽¹²⁾	100	D
Common Stock	05/04/2026		S⁽¹⁾		100	D	$267.62⁽¹³⁾	0	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Non Qualified Stock Option	$33.96	05/04/2026		M			4,596	05/03/2026	⁽¹⁴⁾	Common Stock	4,596	$0	13,788	D
Non Qualified Stock Option	$41.61	05/04/2026		M			2,916	05/02/2026	⁽¹⁴⁾	Common Stock	2,916	$0	5,832	D

Explanation of Responses:

1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2024.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $244.2700 to $244.3200.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $246.7600 to $246.7600.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $247.8300 to $247.9800.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $249.7100 to $249.9600.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $250.7300 to $251.6100.

7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $251.7900 to $252.4800.

8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $252.9300 to $253.9100.

9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $253.9500 to $254.9300.

10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $255.0000 to $255.9900.

11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $256.0200 to $256.6500.

12. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $257.1800 to $257.2100.

13. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $267.6200 to $267.6200.

14. Options expire 2 years from each date of vesting.

	/s/Quentin A. Fendelet Attorney in fact for Andrew D'Amico	05/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did VICR director Andrew D'Amico report?

Andrew D'Amico reported open-market sales of 7,512 VICOR CORP (VICR) shares and exercises of options for 7,512 shares of Common Stock on May 4, 2026. These trades combined option exercises with same-day share sales.

At what prices did Andrew D'Amico sell VICR shares in this filing?

D'Amico’s reported VICR share sales occurred at weighted average prices generally between $244.27 and $267.62 per share. Footnotes note multiple trades within narrow ranges, each disclosed as a single averaged price for reporting purposes.

Were Andrew D'Amico’s VICR stock sales pre-planned under Rule 10b5-1?

Yes. A footnote states the sales were made under a Rule 10b5-1 trading plan adopted on September 12, 2024. Such plans are pre-arranged trading programs that schedule transactions in advance, reducing the significance of short-term market timing.

How many VICR shares did Andrew D'Amico acquire through option exercises?

He exercised options to acquire 7,512 VICR Common Stock shares on May 4, 2026. The filing shows two option series converted: 2,916 shares at an exercise price of $41.61 and 4,596 shares at $33.96 per share.

What is Andrew D'Amico’s VICR stock position after these transactions?

After the reported sales and option exercises, D'Amico directly owned 4,596 shares of VICOR CORP Common Stock. The derivative section shows no remaining stock options tied to this filing, indicating the exercised options fully converted into common shares.

What do the weighted average price disclosures mean in this VICR Form 4?

Weighted average prices indicate each reported sale price represents several individual trades within a narrow range. Footnotes show ranges like $244.27 to $244.32. This simplifies reporting while still describing where VICR shares traded during those transactions.