Vicor CFO sells 4,274 shares in planned trades

VICOR CORP director and CFO James F. Schmidt reported option exercises and matching share sales.

Rhea-AI Filing Summary

VICOR CORP director and CFO James F. Schmidt reported option exercises and matching share sales. On May 4, 2026 he exercised options for 4,274 shares of common stock at strike prices of $50.00 and $41.61 per share, then sold 4,274 shares in open-market transactions at prices ranging from about $244.32 to $267.62. The sales were effected under a pre-arranged Rule 10b5-1 trading plan adopted on December 10, 2025. After these transactions he holds 3,246 shares of common stock directly and 6,491 non-qualified stock options.

Insider Trade Summary 10b5-1

Exercise and Sale: 4,274 shares ($894K approx. pre-tax spread)

Exercise and Sale 14 txns

Insider Schmidt James F

Role CFO, Treasurer, Secretary

Sold 4,274 shs ($1.08M)

Approx. gross sale proceeds $1.08M

Approx. exercise cost $186K

Approx. pre-tax spread $894K

Type	Security	Shares	Price	Value
Exercise	Non Qualified Stock Option	3,246	$0.00	$0.00
Exercise	Non Qualified Stock Option	1,028	$0.00	$0.00
Exercise	Common Stock	3,246	$41.61	$135K
Exercise	Common Stock	1,028	$50.00	$51K
Sale	Common Stock	100	$244.32	$24K
Sale	Common Stock	100	$247.05	$25K
Sale	Common Stock	274	$250.1862	$69K
Sale	Common Stock	1,300	$251.0942	$326K
Sale	Common Stock	700	$252.2514	$177K
Sale	Common Stock	500	$253.692	$127K
Sale	Common Stock	500	$254.74	$127K
Sale	Common Stock	500	$255.836	$128K
Sale	Common Stock	200	$256.895	$51K
Sale	Common Stock	100	$267.62	$27K

Holdings After Transaction: Non Qualified Stock Option — 10,603 contracts (Direct); Common Stock — 0 shares (Direct)

Footnotes (12)

1. F1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2025.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $244.3200 to $244.3200.
3. F3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $247.0500 to $247.0500.
4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $249.7700 to $250.7300.
5. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $250.8100 to $251.5950.
6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $251.8200 to $252.7100.
7. F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $253.1700 to $254.0200.
8. F8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $254.2200 to $255.2000.
9. F9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $255.6100 to $256.0900.
10. F10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $256.6100 to $257.1800.
11. F11. 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.
12. F12. Options expire 2 years from each date of vesting.

Key Figures

Shares sold: 4,274 shares Sale price range: $244.32–$267.62 per share Options exercised: 4,274 shares +4 more

7 metrics

Shares sold 4,274 shares Open-market sales on May 4, 2026

Sale price range $244.32–$267.62 per share Weighted average prices in multiple trades

Options exercised 4,274 shares Exercise of derivative securities on May 4, 2026

Strike prices $50.00 and $41.61 Non-qualified stock option exercise prices

Shares held after 3,246 shares Common stock directly owned post-transaction

Options remaining 6,491 options Non-qualified stock options outstanding after exercises

10b5-1 plan adoption date December 10, 2025 Plan governing the reported sales

Key Terms

Rule 10b5-1 trading plan, Non Qualified Stock Option, weighted average price, derivative exercise/conversion, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"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 exercise/conversion financial

"transaction_action": "derivative exercise/conversion""

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Vicor (VICR) CFO James F. Schmidt report in this Form 4?

He reported exercising stock options for 4,274 Vicor common shares, then selling 4,274 shares in open-market trades. The filing shows both the option exercises and subsequent sales, providing transparency into his recent equity transactions.

How many Vicor (VICR) shares did the CFO sell and at what prices?

James F. Schmidt sold 4,274 Vicor common shares in multiple open-market transactions. Reported weighted average sale prices ranged from about $244.32 to $267.62 per share, reflecting several trades executed at different price levels on the same trading day.

What stock options did the Vicor (VICR) CFO exercise in this filing?

He exercised non-qualified stock options covering 1,028 shares at a $50.00 strike price and 3,246 shares at a $41.61 strike price. These option exercises converted derivative positions into common shares before the reported open-market sales occurred.

Was the Vicor (VICR) CFO’s share sale under a Rule 10b5-1 plan?

Yes. A footnote states the sale was effected under a Rule 10b5-1 trading plan adopted on December 10, 2025. Such plans pre-schedule trades, indicating the timing of these sales was established in advance rather than decided opportunistically.

How many Vicor (VICR) shares and options does the CFO hold after these transactions?

Following the reported trades, James F. Schmidt directly holds 3,246 shares of Vicor common stock. He also holds 6,491 non-qualified stock options, reflecting remaining derivative awards after exercising 4,274 option shares in this Form 4 report.

What does 'weighted average price' mean in the Vicor (VICR) Form 4 footnotes?

Weighted average price indicates the reported price blends multiple individual trades executed within a specified range. Footnotes explain that for several sale lines, shares were sold in separate transactions at prices within narrow ranges, and the Form 4 shows the volume-weighted average.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/05/2026 - 03:13 PM Learn about SEC filing dates

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).

X

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^*

Schmidt James F

(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
X	Officer (give title below)		Other (specify below)
	CFO, Treasurer, Secretary

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/04/2026		M		3,246	A	$41.61	3,246	D
Common Stock	05/04/2026		M		1,028	A	$50	4,274	D
Common Stock	05/04/2026		S(1)		100	D	$244.32(2)	4,174	D
Common Stock	05/04/2026		S(1)		100	D	$247.05(3)	4,074	D
Common Stock	05/04/2026		S(1)		274	D	$250.1862(4)	3,800	D
Common Stock	05/04/2026		S(1)		1,300	D	$251.0942(5)	2,500	D
Common Stock	05/04/2026		S(1)		700	D	$252.2514(6)	1,800	D
Common Stock	05/04/2026		S(1)		500	D	$253.692(7)	1,300	D
Common Stock	05/04/2026		S(1)		500	D	$254.74(8)	800	D
Common Stock	05/04/2026		S(1)		500	D	$255.836(9)	300	D
Common Stock	05/04/2026		S(1)		200	D	$256.895(10)	100	D
Common Stock	05/04/2026		S(1)		100	D	$267.62(11)	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non Qualified Stock Option	$41.61	05/04/2026		M			3,246	05/02/2026	(12)	Common Stock	3,246	$0	6,491	D
Non Qualified Stock Option	$50	05/04/2026		M			1,028	05/02/2026	(12)	Common Stock	1,028	$0	4,112	D

Explanation of Responses:

1. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $244.3200 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 $247.0500 to $247.0500.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $249.7700 to $250.7300.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $250.8100 to $251.5950.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $251.8200 to $252.7100.

7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $253.1700 to $254.0200.

8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $254.2200 to $255.2000.

9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $255.6100 to $256.0900.

10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $256.6100 to $257.1800.

11. 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.

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

	Kemble D. Morrison Attorney in fact for James Schmidt	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)