BlackRock (NYSE: MTRX) holds 1.92M shares of Matrix Service (6.8%)

Rhea-AI Filing Summary

BlackRock, Inc. amended a Schedule 13G/A to report beneficial ownership of 1,920,729 shares of Matrix Service Company common stock, representing 6.8% of the class. The amendment (Amendment No. 3) was signed on 04/07/2026 and lists 1,895,011 shares as sole voting power and 1,920,729 as sole dispositive power.

Insights

Institutional Ownership Analyst

BlackRock reports a sizable passive stake in Matrix Service Company (6.8%).

BlackRock's amendment clarifies holdings across voting and dispositive categories: 1,895,011 shares with sole voting power and 1,920,729 shares with sole dispositive power. The filing is a standard disclosure of institutional ownership under a Schedule 13G/A.

Ownership at 6.8% is below typical 10% activist thresholds; subsequent filings may show changes, but the current filing itself does not indicate trading intentions or plans.

Key Figures

Beneficial ownership: 1,920,729 shares Percent of class: 6.8% Sole voting power: 1,895,011 shares +2 more

5 metrics

Beneficial ownership 1,920,729 shares Amount beneficially owned reported on the Schedule 13G/A

Percent of class 6.8% Percent of common stock beneficially owned

Sole voting power 1,895,011 shares Shares as to which BlackRock has sole power to vote

Sole dispositive power 1,920,729 shares Shares as to which BlackRock has sole power to dispose

Amendment signature date 04/07/2026 Date the Schedule 13G/A Amendment No. 3 was signed

Key Terms

Schedule 13G/A, beneficially owned, sole dispositive power, sole voting power

4 terms

Schedule 13G/A regulatory

"Amendment No. 3 ) MATRIX SERVICE COMPANY 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.

beneficially owned financial

"Amount beneficially owned: 1920729"

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

"Sole power to dispose or to direct the disposition of: 1920729"

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.

sole voting power regulatory

"Sole power to vote or to direct the vote: 1895011"

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.

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

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Accepted by SEC EDGAR 04/07/2026 - 12:39 PM Learn about SEC filing dates

FAQ

What stake does BlackRock report in MTRX?

BlackRock reports beneficial ownership of 1,920,729 shares, equal to 6.8% of Matrix Service Company. The filing lists voting and dispositive powers and is filed as an amended Schedule 13G/A.

When was the Schedule 13G/A amendment signed?

The amendment (Amendment No. 3) was signed on 04/07/2026. It updates previously reported holdings and clarifies ownership and powers as of that signature date.

How many votes does BlackRock control in MTRX?

BlackRock reports 1,895,011 shares as sole voting power. The filing separates voting power from dispositive power to show governance versus sale authority.

Does the filing indicate BlackRock will sell or buy more MTRX shares?

The Schedule 13G/A amendment discloses ownership levels but does not state any intended purchases or dispositions. It simply reports beneficial ownership figures and voting/dispositive powers.

Is BlackRock acting on behalf of other investors in this filing?

The filing states various persons may have rights to dividends or proceeds, and that the securities are held by multiple reporting business units of BlackRock, Inc. No single outside person holds >5% as disclosed.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

MATRIX SERVICE COMPANY

(Name of Issuer)

Common Stock

(Title of Class of Securities)

576853105

(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): 576853105

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 1,895,011.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,920,729.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,920,729.00

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)

6.8 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MATRIX SERVICE COMPANY
(b)	Address of issuer's principal executive offices: 15 EAST 5TH STREET, SUITE 1100 TULSA OK 74103
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.:
Item 4.	Ownership
(a)	Amount beneficially owned: 1920729
(b)	Percent of class: 6.8 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1895011
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1920729
	(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 MATRIX SERVICE COMPANY. No one person's interest in the common stock of MATRIX SERVICE COMPANY 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:	04/07/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7