[SCHEDULE 13G/A] VICOR CORP Amended Passive Investment Disclosure

BlackRock, Inc. filed an amendment to a Schedule 13G/A reporting beneficial ownership of 2,658,780 shares of Vicor Corporation common stock, representing 7.9% of the class.

Rhea-AI Filing Summary

BlackRock, Inc. filed an amendment to a Schedule 13G/A reporting beneficial ownership of 2,658,780 shares of Vicor Corporation common stock, representing 7.9% of the class. The filing lists 2,600,118 shares as sole voting power and 2,658,780 shares as sole dispositive power. The filing is signed by a BlackRock Managing Director on 04/24/2026 and includes customary exhibits (Power of Attorney; Item 7 identification).

Insights

Institutional Ownership Analyst

BlackRock reports a meaningful passive stake in Vicor at 7.9%.

BlackRock's amendment shows beneficial ownership of 2,658,780 shares, with sole voting and dispositive control largely aligned. This indicates a consolidated reporting of holdings by certain BlackRock business units under Release No. 34-39538.

The filing is a passive ownership disclosure under Schedule 13G/A; any future change in voting or disposition intentions would require updated filings. Subsequent SEC schedules would clarify shifts in stake or strategy.

Corporate Governance Specialist

Voting and dispositive power are disclosed, limiting ambiguity over control.

The report specifies 2,600,118 shares with sole voting power and 2,658,780 with sole dispositive power, which helps map who can vote and who can sell the shares. Item 6 notes other persons may have rights to proceeds but no single other holder exceeds 5%.

Investors tracking ownership changes should watch for future Schedule 13D/G amendments that would state any active intent or plans.

Key Figures

Beneficial ownership: 2,658,780 shares Percent of class: 7.9% Sole voting power: 2,600,118 shares +3 more

6 metrics

Beneficial ownership 2,658,780 shares Amount beneficially owned reported on Schedule 13G/A

Percent of class 7.9% Percent of Vicor common stock reported

Sole voting power 2,600,118 shares Shares with sole power to vote

Sole dispositive power 2,658,780 shares Shares with sole power to dispose

CUSIP 925815102 Vicor common stock CUSIP on cover page

Signature date 04/24/2026 Date the amendment was signed by BlackRock Managing Director

Key Terms

Schedule 13G/A, beneficially owned, sole dispositive power, Reporting Business Units

4 terms

Schedule 13G/A regulatory

"Amendment to Schedule 13G/A reporting beneficial ownership"

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.

beneficially owned financial

"securities beneficially owned, or deemed to be beneficially owned"

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 financial

"Sole Dispositive Power 2,658,780.00"

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.

Reporting Business Units other

"securities beneficially owned by certain business units (the "Reporting Business Units")"

FAQ

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

What stake does BlackRock report in Vicor (VICR)?

BlackRock reports beneficial ownership of 2,658,780 shares, equal to 7.9% of Vicor common stock. The filing shows sole voting power on 2,600,118 shares and sole dispositive power on 2,658,780 shares.

What form did BlackRock file to disclose its Vicor holdings?

BlackRock filed an amendment to a Schedule 13G/A, which is used for passive beneficial ownership disclosures under SEC rules. The filing consolidates holdings of certain reporting business units as described in the cover text.

When was the Schedule 13G/A for Vicor signed?

The Schedule 13G/A amendment is signed by a BlackRock Managing Director on 04/24/2026. The cover page also lists an earlier date associated with the filing header, 03/31/2026.

Does the filing indicate BlackRock plans to influence Vicor management?

No active intent is stated; the filing is a Schedule 13G/A passive disclosure. It lists voting and dispositive powers but does not assert any plans to change control or solicit proxies.

Are other parties named as holding more than 5% of Vicor shares?

Item 6 states that various persons may have rights to proceeds or dividends, but it also states that no one person's interest exceeds 5% of Vicor's outstanding common shares.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 04/24/2026 - 04:11 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 13)

VICOR CORPORATION

(Name of Issuer)

Common Stock

(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

BlackRock, 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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,600,118.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,658,780.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,658,780.00

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)

7.9 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: VICOR CORPORATION
(b)	Address of issuer's principal executive offices: 25 FRONTAGE RD ANDOVER MA 01810
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(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: 2658780
(b)	Percent of class: 7.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2600118
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2658780
	(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.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of VICOR CORPORATION. No one person's interest in the common stock of VICOR CORPORATION is more than five percent of the total outstanding common shares.
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. See Exhibit 99
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.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	04/24/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7