T. Rowe Price (VICR) discloses 7.0% beneficial stake in Vicor common stock

Rhea-AI Filing Summary

T. Rowe Price Associates, Inc. filed an amended Schedule 13G reporting beneficial ownership of 2,368,425 shares of Vicor Corp common stock. This represents 7.0% of the outstanding common shares. T. Rowe Price reports sole voting power over 2,199,761 shares and sole dispositive power over 2,368,425 shares, with no shared voting or dispositive power. The firm states that this filing should not be construed as an admission that it is the beneficial owner of these securities, and such beneficial ownership is expressly denied.

Key Figures

Shares beneficially owned: 2,368,425 shares Percent of class: 7.0% Sole voting power: 2,199,761 shares +3 more

6 metrics

Shares beneficially owned 2,368,425 shares Vicor Corp common stock reported by T. Rowe Price Associates, Inc.

Percent of class 7.0% Portion of Vicor Corp common stock class held beneficially

Sole voting power 2,199,761 shares Shares of Vicor Corp over which T. Rowe Price has sole power to vote

Shared voting power 0 Shares of Vicor Corp with shared voting power

Sole dispositive power 2,368,425 shares Shares of Vicor Corp over which T. Rowe Price has sole dispositive power

Shared dispositive power 0 Shares of Vicor Corp with shared dispositive power

Key Terms

beneficially owned, sole voting power, sole dispositive power, percent of class, +1 more

5 terms

beneficially owned financial

"Ownership (a) | Amount beneficially owned: 2368425"

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 voting power financial

"Sole power to vote or to direct the vote: 2199761"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"Sole power to dispose or to direct the disposition of: 2368425"

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.

percent of class financial

"Percent of class: 7.0 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

Schedule 13G regulatory

"T. Rowe Price Associates, Inc. hereby declares and affirms that the filing of"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

What stake in VICR does T. Rowe Price Associates report in this Schedule 13G/A?

T. Rowe Price Associates reports beneficial ownership of 2,368,425 shares of Vicor Corp common stock, representing 7.0% of the class as disclosed in the Schedule 13G/A.

How much voting power over VICR shares does T. Rowe Price Associates have?

T. Rowe Price Associates reports sole voting power over 2,199,761 shares of Vicor Corp and no shared voting power, according to the ownership breakdown in the filing.

What dispositive power over VICR shares is reported by T. Rowe Price Associates?

The firm reports sole dispositive power over 2,368,425 shares of Vicor Corp common stock and no shared dispositive power, meaning it alone can direct the disposition of those shares.

What percentage of VICR’s common stock is owned by T. Rowe Price Associates?

T. Rowe Price Associates reports that its holdings represent 7.0% of Vicor Corp’s outstanding common stock, based on the class of securities identified as common stock in the Schedule 13G/A.

Does T. Rowe Price Associates admit beneficial ownership of the VICR shares in this filing?

No. T. Rowe Price Associates explicitly states that this filing shall not be construed as an admission of beneficial ownership of the referenced securities and that such beneficial ownership is expressly denied.

What class of VICR securities is covered in T. Rowe Price’s Schedule 13G/A?

The Schedule 13G/A covers Vicor Corp common stock with CUSIP 925815102, and all reported share and percentage figures relate to this class of securities.

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Available on EDGAR 08/14/2026 - 10:42 AM Accepted by SEC EDGAR 08/14/2026 - 10:38 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

VICOR CORP

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

925815102

(CUSIP Number)

06/30/2026

(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

T. Rowe Price Associates, Inc.

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

MARYLAND

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,199,761.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,368,425.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,368,425.00

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)

7.0 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: VICOR CORP
(b)	Address of issuer's principal executive offices: 25 FRONTAGE ROAD, ANDOVER, MA, 01810
Item 2.
(a)	Name of person filing: T. Rowe Price Associates, Inc.
(b)	Address or principal business office or, if none, residence: 1307 Point Street, Baltimore, MD 21231
(c)	Citizenship: Maryland
(d)	Title of class of securities: COMMON STOCK
(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: 2368425
(b)	Percent of class: 7.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2199761
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2368425
	(iv) Shared power to dispose or to direct the disposition of: 0
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.
	Not Applicable
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. T. Rowe Price Associates, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Associates is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.

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.

T. Rowe Price Associates, Inc.

Signature:	Ellen York
Name/Title:	Vice President
Date:	08/14/2026