JPMorgan reports 2,106,728 Vicor Corp shares (NASDAQ: VICR)

Rhea-AI Filing Summary

VICOR CORP ownership filing discloses that JPMorgan Chase & reports beneficial ownership of 2,106,728 shares of Common Stock, representing 6.2% of the class as shown in the schedule (data dated 03/31/2026). The filing breaks down voting and dispositive powers across JPMorgan entities and is signed on 05/12/2026.

Insights

Institutional Ownership Analyst

JPMorgan holds a 6.2% stake in Vicor via multiple affiliated entities.

The schedule shows 2,106,728 shares beneficially owned as of 03/31/2026, with 1,169,966 shares subject to sole voting power and 2,104,730 shares subject to sole dispositive power. This indicates voting vs. economic positions held across custody and asset management arms.

Further filings or statements from the holder could clarify whether these holdings are for index/fund exposures or discretionary portfolios; cash‑flow treatment is not specified in the excerpt.

Corporate Governance Specialist

The ownership is reported through several JPMorgan subsidiaries and trusts.

The schedule names entities including J.P. Morgan Trust Company of Delaware and J.P. Morgan Securities LLC, showing classification as a parent/affiliate reporting position. This structure is common for large asset managers holding client and proprietary accounts.

Stake concentration near 6.2% may be relevant for proxy and engagement tracking; timing and intent are not stated in the provided excerpt.

Key Figures

Beneficial ownership: 2,106,728 shares Percent of class: 6.2% Sole voting power: 1,169,966 shares +3 more

6 metrics

Beneficial ownership 2,106,728 shares as of 03/31/2026

Percent of class 6.2% percent of common stock

Sole voting power 1,169,966 shares reported in Item 4(i)

Sole dispositive power 2,104,730 shares reported in Item 4(iii)

Shared dispositive power 1,998 shares reported in Item 4(iv)

Signature date 05/12/2026 filing signed by Rachel Tsvaygoft, Vice President

Key Terms

Beneficially owned, Sole dispositive power, Parent holding company, Schedule 13G/A

4 terms

Beneficially owned regulatory

"Item 4. | Ownership (a) | Amount beneficially owned: 2,106,728"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole dispositive power regulatory

"(iii) Sole power to dispose or to direct the disposition of: 2,104,730"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Parent holding company corporate

"Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security"

Schedule 13G/A regulatory

"(Amendment No. 4 ) VICOR CORP Common Stock"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

VICOR CORP

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

925815102

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 925815102

1

Names of Reporting Persons

JPMORGAN CHASE & CO

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,169,966.00
6	Shared Voting Power 8.00
7	Sole Dispositive Power 2,104,730.00
8	Shared Dispositive Power 1,998.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,106,728.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.2 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: VICOR CORP
(b)	Address of issuer's principal executive offices: 25 FRONTAGE ROAD, ANDOVER, MASSACHUSETTS, 01810.
Item 2.
(a)	Name of person filing: JPMORGAN CHASE & CO
(b)	Address or principal business office or, if none, residence: 270 Park Avenue, New York, NY 10017
(c)	Citizenship: DE
(d)	Title of class of securities: Common Stock, par value $0.01 per share
(e)	CUSIP No.: 925815102
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 2,106,728
(b)	Percent of class: 6.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1,169,966
	(ii) Shared power to vote or to direct the vote: 8
	(iii) Sole power to dispose or to direct the disposition of: 2,104,730
	(iv) Shared power to dispose or to direct the disposition of: 1,998
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. J.P. Morgan Trust Company of Delaware; J.P. Morgan Securities LLC; JPMorgan Chase Bank, National Association; J.P. Morgan Investment Management Inc.; JPMorgan Asset Management (Taiwan) Limited; JPMorgan Asset Management (China) Company Limited; J.P. Morgan Wealth Management Solutions Inc.
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

JPMORGAN CHASE & CO

Signature:	Rachel Tsvaygoft
Name/Title:	Vice President
Date:	05/12/2026

FAQ

What stake does JPMorgan report in VICR?

JPMorgan reports beneficial ownership of 2,106,728 shares, equal to 6.2% of Vicor's common stock as of 03/31/2026. The schedule attributes voting and dispositive powers across multiple JPMorgan entities and is signed on 05/12/2026.

How much voting power does JPMorgan have in Vicor (VICR)?

The filing shows 1,169,966 shares under sole voting power and 8 shares under shared voting power. These counts are disclosed in the ownership breakdown on the Schedule 13G/A dated 03/31/2026 and signed 05/12/2026.

Which JPMorgan entities are listed as holders of VICR shares?

The schedule lists entities including J.P. Morgan Trust Company of Delaware, J.P. Morgan Securities LLC, JPMorgan Chase Bank, N.A., and J.P. Morgan Investment Management Inc. as relevant subsidiaries or affiliates in the filing.

Does the Schedule 13G/A state how JPMorgan acquired VICR shares?

The excerpt lists ownership amounts and responsible subsidiaries but does not state acquisition method. The filing names custodial and management entities; specific purchase timing or transaction types are not described in the provided text.

What dispositive power is reported by JPMorgan for VICR?

The filing reports 2,104,730 shares under sole dispositive power and 1,998 shares under shared dispositive power, as disclosed in the ownership table of the Schedule 13G/A dated 03/31/2026.