Vicor (VICR) CFO sells 15,500 shares after exercising stock options

Rhea-AI Filing Summary

Vicor Corporation director and CFO James F. Schmidt exercised stock options for 15,500 shares of common stock at exercise prices of $93.33 and $48.38 per share. He then sold 15,500 shares in open-market transactions between $169.43 and $180.56 per share under a Rule 10b5-1 trading plan, leaving no shares of common stock directly held.

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)

C/O VICOR CORPORATION

25 FRONTAGE RD.

(Street)

ANDOVER MA 01810

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
03/11/2026

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

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

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

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	03/11/2026		M		15,000	A	$93.33	15,000	D
Common Stock	03/11/2026		M		500	A	$48.38	15,500	D
Common Stock	03/11/2026		S(1)		900	D	$169.48(2)	14,600	D
Common Stock	03/11/2026		S(1)		800	D	$172.9638(3)	13,800	D
Common Stock	03/11/2026		S(1)		300	D	$174.4133(4)	13,500	D
Common Stock	03/11/2026		S(1)		1,997	D	$176.3531(5)	11,503	D
Common Stock	03/11/2026		S(1)		4,401	D	$177.5735(6)	7,102	D
Common Stock	03/11/2026		S(1)		5,157	D	$178.4011(7)	1,945	D
Common Stock	03/11/2026		S(1)		1,245	D	$179.2188(8)	700	D
Common Stock	03/11/2026		S(1)		700	D	$180.4614(9)	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	$93.33	03/11/2026		M			15,000	06/01/2025	06/01/2031	Common Stock	15,000	$0	5,000	D
Non Qualified Stock Option	$48.38	03/11/2026		M			500	01/16/2026	01/16/2028	Common Stock	500	$0	0	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 $169.4300 to $169.5300. 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 (2) through (9) to this Form 4.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $172.8300 to $173.0400.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $174.3800 to $174.4400.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.9500 to $176.9200.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $176.9700 to $177.9300.

7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $177.9900 to $178.9000.

8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $178.9900 to $179.9500.

9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $180.1500 to $180.5600.

	/s/Kemble D. Morrison. Attorney in fact for James F. Schmidt	03/12/2026
	** 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.

FAQ

What insider transaction did Vicor (VICR) report for CFO James F. Schmidt?

Vicor reported that CFO James F. Schmidt exercised options for 15,500 shares of common stock, then sold 15,500 shares in multiple open-market trades. The transactions occurred on March 11, 2026, leaving him with no directly held common shares after the sales.

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

The CFO sold 15,500 Vicor common shares in several open-market transactions. Weighted average prices by block ranged from about $169.48 to $180.46, with detailed footnotes noting sale price ranges from $169.43 up to $180.56 per share across the different trades.

Were the Vicor (VICR) insider sales made 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 schedule trades in advance, indicating these transactions were pre-arranged rather than timed discretionarily in response to short-term market movements.

What option exercises did the Vicor (VICR) CFO report in this filing?

He exercised two non-qualified stock option grants covering 15,500 underlying shares of common stock. The options had exercise prices of $93.33 and $48.38 per share, and the filing’s summary shows total option exercises of 15,500 shares in these derivative transactions.

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

After completing the reported trades, the Form 4 shows the CFO directly holding 0 shares of Vicor common stock. The last reported sale entry lists 700 shares sold at a weighted average price of $180.4614, with 0 shares indicated as directly owned following that transaction.

What is the net effect of the reported Vicor (VICR) insider transactions?

Overall, the transactions reflect option exercises for 15,500 shares and open-market sales of 15,500 shares. The transaction summary shows net sell activity of 15,500 shares, characterized as a combination of derivative exercises and subsequent sales, resulting in no remaining directly held common shares.