Schedule 13G: Frontier Capital discloses 4.45M-share, 5.23% holding in MRC

Rhea-AI Filing Summary

Frontier Capital Management Co., LLC reports beneficial ownership of 4,453,159 shares of MRC Global Inc. common stock, representing 5.23% of the class. The firm discloses sole voting power over 3,116,319 shares and sole dispositive power over the full 4,453,159 shares it reports, indicating it controls disposition decisions for the position while voting a subset.

The filer is an investment adviser organized in Delaware with a Boston principal office. The filing includes a certification that the shares are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.

Insights

Securities Analyst

TL;DR: Frontier holds a modest but material 5.23% stake in MRC, enough to warrant investor attention but not to imply control.

Frontier's reported 4.45 million-share position equals 5.23% of MRC's common stock, crossing the 5% disclosure threshold that often draws market attention. The split between sole voting power (3.12M) and sole dispositive power (4.45M) suggests Frontier controls disposition of the full position while voting a smaller portion. The adviser certification that shares are held in the ordinary course reduces immediate governance-change concerns, but the stake warrants monitoring for subsequent Schedule 13D/13G amendments or engagement activity.

Corporate Governance Expert

TL;DR: Disclosure reflects compliance and transparency; ownership size is material but does not indicate activism in this filing.

The filing is a routine Schedule 13G disclosure by an investment adviser, documenting a >5% beneficial holding. The statement explicitly denies intent to influence control, which aligns with passive investor treatment. From a governance standpoint, the position is significant enough to merit inclusion in ownership tables and proxy analyses, but the filing contains no indication of proposals, nominations, or coordinated group activity that would signal a change in governance dynamics.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

MRC GLOBAL INC.

(Name of Issuer)

Common Stock, par value $0.01

(Title of Class of Securities)

55345K103

(CUSIP Number)

06/30/2025

(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)

SCHEDULE 13G

CUSIP No. 55345K103

1

Names of Reporting Persons

FRONTIER CAPITAL MANAGEMENT CO.,LLC

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 3,116,319.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 4,453,159.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,453,159.00

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)

5.23 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MRC GLOBAL INC.
(b)	Address of issuer's principal executive offices: 1301 McKinney Street, Suite 2300, Houston, Texas 77010
Item 2.
(a)	Name of person filing: FRONTIER CAPITAL MANAGEMENT CO., LLC
(b)	Address or principal business office or, if none, residence: 99 Summer Street Boston, MA 02110
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Stock, par value $0.01
(e)	CUSIP No.: 55345K103
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: 4,453,159
(b)	Percent of class: 5.23%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 3,116,319
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 4,453,159
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
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.

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.

FRONTIER CAPITAL MANAGEMENT CO.,LLC

Signature:	Robert E. Phay
Name/Title:	Robert E. Phay, Chief Compliance Officer & General Counsel
Date:	08/14/2025