Limbach (LMB) Director Buys 1,400 Shares at $106 — Form 4

David R. Gaboury, a director of Limbach Holdings, Inc. (LMB), purchased 1,400 shares of common stock on 08/12/2025 at $106.00 per share under transaction code P, increasing his direct beneficial ownership to 4,297 shares.

Rhea-AI Filing Summary

David R. Gaboury, a director of Limbach Holdings, Inc. (LMB), purchased 1,400 shares of common stock on 08/12/2025 at $106.00 per share under transaction code P, increasing his direct beneficial ownership to 4,297 shares.

The Form 4 was filed by one reporting person and discloses no derivative securities transactions or amendments; the reported acquisition is recorded as a direct holding.

Positive

• Director David R. Gaboury acquired 1,400 common shares at $106.00, increasing direct ownership to 4,297 shares

Negative

• None.

Insights

Securities Analyst

TL;DR: Director purchase of 1,400 shares at $106; disclosed and appears routine, with limited material impact.

The Form 4 shows a direct acquisition by David R. Gaboury on 08/12/2025 under transaction code P for 1,400 common shares at $106.00 each, bringing his direct holdings to 4,297 shares. The disclosure lists no derivative transactions and is filed by a single reporting person, suggesting a straightforward open-market or plan purchase rather than a complex compensation or derivative event.

Corporate Governance Expert

TL;DR: Routine insider purchase by a director; governance disclosure requirements satisfied in the Form 4.

The report names David R. Gaboury as a director and records a direct purchase increasing his ownership. The Form 4 format and entries indicate compliance with Section 16 reporting for beneficial ownership changes. No amendments, no indirect holdings noted, and no derivative activity are disclosed in this filing.

Insider Trade Summary

Net Buyer: 1,400 shares

Net Buy 1 txn

Insider Gaboury David Richard

Role Director

Bought 1,400 shs ($148K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	1,400	$106.00	$148K

Holdings After Transaction: Common Stock — 4,297 shares (Direct)

FAQ

What transaction did Limbach (LMB) report on the Form 4?

A director purchase of 1,400 common shares on 08/12/2025 at $106.00 per share.

Who filed the Form 4 for LMB and what is their relationship to the company?

Reporting person: David R. Gaboury, identified as a director of Limbach Holdings, Inc.

How many shares does the reporting person directly own after the transaction?

4,297 shares of common stock beneficially owned directly following the reported purchase.

Were any derivative securities reported in this filing for LMB?

No derivative securities are reported in Table II of this Form 4.

What transaction code is listed for the purchase on the Form 4?

Transaction code: P (purchase).

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Accepted by SEC EDGAR 08/13/2025 - 04:12 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Gaboury David Richard

(Last) (First) (Middle)

797 COMMONWEALTH DRIVE

(Street)

WARRENDALE PA 15086

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Limbach Holdings, Inc. [ LMB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/12/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/12/2025		P		1,400	A	$106	4,297	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Jeremiah G. Garvey, Attorney-in-Fact for David R. Gaboury	08/13/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.