Capital Int'l Investors (LMB) reports 7.1% stake — 823,702 shares

Rhea-AI Filing Summary

Capital International Investors files an amendment to Schedule 13G/A reporting beneficial ownership of Limbach Holdings, Inc. common stock. The filing states CII is deemed the beneficial owner of 823,702 shares, equal to 7.1% of the 11,679,391 shares believed to be outstanding. The filing lists CUSIP 53263P105 and shows sole voting and dispositive power over 823,702 shares. The amendment is signed by Aaron Espin as Senior Vice President on 05/13/2026.

Key Figures

Shares beneficially owned: 823,702 shares Percent of class: 7.1% Shares outstanding (believed): 11,679,391 shares +3 more

6 metrics

Shares beneficially owned 823,702 shares Amount CII is deemed to own

Percent of class 7.1% Percent of the class CII is deemed to own

Shares outstanding (believed) 11,679,391 shares Shares believed to be outstanding as stated in the filing

CUSIP 53263P105 Identifier for Limbach common stock

Sole voting power 823,702 shares Shares with sole voting power

Sole dispositive power 823,702 shares Shares with sole dispositive power

Key Terms

beneficial owner, Schedule 13G/A, sole dispositive power

3 terms

beneficial owner regulatory

"CII is deemed to be the beneficial owner of 823,702 shares"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

Schedule 13G/A regulatory

"Amendment to Schedule 13G/A reporting ownership over 5%"

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.

sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 823,702"

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.

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Limbach Holdings, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

53263P105

(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): 53263P105

1

Names of Reporting Persons

Capital International Investors

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 823,702.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 823,702.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

823,702.00

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)

7.1 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Limbach Holdings, Inc.
(b)	Address of issuer's principal executive offices: 5102 W LAUREL STREET, SUITE 700, TAMPA, FL 33607
Item 2.
(a)	Name of person filing: Capital International Investors
(b)	Address or principal business office or, if none, residence: 333 South Hope Street, 55th Fl, Los Angeles, CA 90071
(c)	Citizenship: N/A
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 53263P105
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: 823,702 ** **Capital International Investors ("CII") is a division of Capital Research and Management Company ("CRMC"), as well as its investment management subsidiaries and affiliates Capital Bank and Trust Company, Capital International, Inc., Capital International Limited, Capital International Sarl, Capital International K.K., Capital Group Private Client Services, Inc., and Capital Group Investment Management Private Limited (together with CRMC, the "investment management entities"). CII's divisions of each of the investment management entities collectively provide investment management services under the name "Capital International Investors." CII is deemed to be the beneficial owner of 823,702 shares or 7.1% of the 11,679,391 shares believed to be outstanding.
(b)	Percent of class: 7.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 823,702
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 823,702
	(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. SMALLCAP World Fund, Inc.
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.

Capital International Investors

Signature:	Aaron Espin
Name/Title:	Senior Vice President
Date:	05/13/2026

FAQ

What stake does Capital International Investors report in Limbach Holdings (LMB)?

Capital International Investors reports beneficial ownership of 823,702 shares, representing 7.1% of outstanding common stock. The filing states the 7.1% figure is based on 11,679,391 shares believed to be outstanding as provided in the amendment.

What voting and disposition powers does Capital International Investors claim?

The filing states CII has sole voting power and sole dispositive power over 823,702 shares. The amendment lists 0 shared voting and 0 shared dispositive powers for this holding.

When was the Schedule 13G/A amendment for LMB signed?

The amendment is signed by Aaron Espin, Senior Vice President, with the signature date of 05/13/2026. The cover references 03/31/2026 in the document header; the executed signature date is 05/13/2026.

Which entity is listed as filing the Schedule 13G/A for Limbach?

The filer is Capital International Investors, a division of Capital Research and Management Company and affiliated investment management entities. The filer lists an address at 333 South Hope Street, 55th Fl, Los Angeles, CA 90071.

What CUSIP and class of security are reported in the filing?

The filing identifies the security as Common Stock with CUSIP 53263P105. The document explicitly lists the title of the class as Common Stock alongside the CUSIP.