Barrow Hanley discloses 13.76M MDU shares (MDU) — 6.72% stake

Rhea-AI Filing Summary

MDU Resources Group Inc reports beneficial ownership. Barrow Hanley Global Investors reports beneficial ownership of 13,760,167 shares of Common Stock, representing 6.72% of the class as of 03/31/2026. The filing lists sole voting power of 9,626,924 and shared voting power of 4,133,243. The filing is signed on 05/13/2026.

Insights

Institutional Ownership Analyst

Large passive stake disclosed by Barrow Hanley in MDU.

Barrow Hanley Global Investors reports beneficial ownership of 13,760,167 shares (6.72%) of MDU Common Stock as of 03/31/2026. The filing quantifies voting and dispositive powers: sole vote 9,626,924, shared vote 4,133,243, and sole dispositive 13,760,167.

The filing is a static ownership disclosure and does not state intent or planned actions. Subsequent filings would show any changes to this position.

Key Figures

Beneficial ownership: 13,760,167 shares Percent of class: 6.72% Sole voting power: 9,626,924 shares +2 more

5 metrics

Beneficial ownership 13,760,167 shares as of 03/31/2026

Percent of class 6.72% as of 03/31/2026

Sole voting power 9,626,924 shares reported in Item 4

Shared voting power 4,133,243 shares reported in Item 4

Sole dispositive power 13,760,167 shares reported in Item 4

Key Terms

beneficially owned, sole voting power, dispositive power

3 terms

beneficially owned financial

"Amount beneficially owned: 13,760,167"

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 regulatory

"Sole Voting Power 9,626,924.00"

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.

dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 13,760,167"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

MDU Resources Group Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

552690109

(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): 552690109

1

Names of Reporting Persons

BARROW HANLEY MEWHINNEY & STRAUSS 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 9,626,924.00
6	Shared Voting Power 4,133,243.00
7	Sole Dispositive Power 13,760,167.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

13,760,167.00

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)

6.72 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: MDU Resources Group Inc
(b)	Address of issuer's principal executive offices: 1200 West Century Avenue, Bismarck, North Dakota, 58503
Item 2.
(a)	Name of person filing: Barrow Hanley Global Investors
(b)	Address or principal business office or, if none, residence: 2200 Ross Avenue, 31st Floor Dallas, TX 75201
(c)	Citizenship: Delaware LLC
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 552690109
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: 13,760,167
(b)	Percent of class: 6.72%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 9,626,924
	(ii) Shared power to vote or to direct the vote: 4,133,243
	(iii) Sole power to dispose or to direct the disposition of: 13,760,167
	(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.

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.

BARROW HANLEY MEWHINNEY & STRAUSS LLC

Signature:	Hannah Ackels
Name/Title:	Hannah Ackels, CCO
Date:	05/13/2026

FAQ

What did the Schedule 13G filed for MDU disclose?

The filing states that Barrow Hanley Global Investors beneficially owns 13,760,167 shares of MDU Common Stock, equal to 6.72% of the class as of 03/31/2026. It lists voting and dispositive powers and is signed on 05/13/2026.

Who is reported as the beneficial owner in the MDU filing?

The filing names Barrow Hanley Global Investors (Barrow Hanley Mewhinney & Strauss LLC) with a principal office at 2200 Ross Avenue, Dallas, TX. The filing indicates the filer is a Delaware LLC and includes signature by Hannah Ackels, CCO.

How many votes does Barrow Hanley control in MDU per the filing?

The filing reports sole voting power for 9,626,924 shares and shared voting power for 4,133,243 shares. These figures accompany the disclosed beneficial ownership total of 13,760,167 shares as of 03/31/2026.

What percentage of MDU common stock does Barrow Hanley own?

Barrow Hanley reports beneficial ownership equal to 6.72% of MDU Common Stock based on the filing. The percent is calculated relative to the class and is shown alongside the 13,760,167 share figure dated 03/31/2026.