Laurel J. Krzeminski - 01 Jan 2026 Form 4 Insider Report for Limbach Holdings, Inc. (LMB)

Role: Director
Signature: /s/ Jeremiah G. Garvey, Attorney-in-Fact for Laurel J. Krzeminski
Issuer symbol: LMB
Transactions as of: 01 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 05 Jan 2026, 16:48:49 UTC
Previous filing: 03 Jan 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Krzeminski Laurel J	Director	797 COMMONWEALTH DRIVE, WARRENDALE	/s/ Jeremiah G. Garvey, Attorney-in-Fact for Laurel J. Krzeminski	05 Jan 2026	0001493187

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LMB	Common Stock	Options Exercise	$0	+956	+2.7%	$0.000000	36,452	01 Jan 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	LMB	Restricted Stock Units	Options Exercise	$0	-956	-100%	$0.000000	0	01 Jan 2026	Common Stock	956		Direct	F1, F2
transaction	LMB	Restricted Stock Units	Award	$0	+1,498		$0.000000	1,498	01 Jan 2026	Common Stock	1,498		Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents a contingent right to receive one share of Limbach Holdings, Inc. (the "Company") common stock, exempt under Rule 16b-3.
F2	This award of RSUs was granted on January 1, 2025. The RSUs cliff vested on January 1, 2026.
F3	This award of RSUs was granted on January 1, 2026. The RSUs are scheduled to cliff vest on January 1, 2027.