Michael M. McCann - 01 Jan 2026 Form 4 Insider Report for Limbach Holdings, Inc. (LMB)

Role: Chief Executive Officer, Director
Signature: /s/ Jeremiah G. Garvey, Attorney-in-Fact for Michael M. McCann
Issuer symbol: LMB
Transactions as of: 01 Jan 2026
Net transactions value: -$197,583
Form type: 4
Filing time: 05 Jan 2026, 16:49:52 UTC
Previous filing: 12 Mar 2025
Next filing: 04 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
McCann Michael M	Chief Executive Officer, Director	797 COMMONWEALTH DRIVE, WARRENDALE	/s/ Jeremiah G. Garvey, Attorney-in-Fact for Michael M. McCann	05 Jan 2026	0001760470

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	LMB	Common Stock	Options Exercise	$0	+4,699	+3.7%	$0.000000	133,304	01 Jan 2026	Direct
transaction	LMB	Common Stock	Options Exercise	$0	+1,080	+0.81%	$0.000000	134,384	01 Jan 2026	Direct
transaction	LMB	Common Stock	Options Exercise	$0	+2,627	+2%	$0.000000	137,011	01 Jan 2026	Direct
transaction	LMB	Common Stock	Options Exercise	$0	+1,499	+1.1%	$0.000000	138,510	01 Jan 2026	Direct
transaction	LMB	Common Stock	Tax liability	$197,583	-2,538	-1.8%	$77.85	135,972	01 Jan 2026	Direct	F1
holding	LMB	Common Stock						44,233	01 Jan 2026	The McCann Family Revocable Living Trust	F2

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	-4,699	-30%	$0.000000	10,833	01 Jan 2026	Common Stock	4,699		Direct	F3, F4
transaction	LMB	Restricted Stock Units	Options Exercise	$0	-1,080	-10%	$0.000000	9,753	01 Jan 2026	Common Stock	1,080		Direct	F3, F5
transaction	LMB	Restricted Stock Units	Options Exercise	$0	-2,627	-27%	$0.000000	7,126	01 Jan 2026	Common Stock	2,627		Direct	F3, F6
transaction	LMB	Restricted Stock Units	Options Exercise	$0	-1,499	-21%	$0.000000	5,627	01 Jan 2026	Common Stock	1,499		Direct	F3, F7
transaction	LMB	Restricted Stock Units	Award	$0	+6,260	+111%	$0.000000	11,887	01 Jan 2026	Common Stock	6,260		Direct	F3, F8

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

Explanation of Responses:

Id	Content
F1	Reflects the withholding of shares by Limbach Holdings, Inc. (the "Company") to satisfy tax withholding requirements. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3.
F2	Shares held by The McCann Family Revocable Living Trust. The Reporting Person and his spouse are trustees of The McCann Family Revocable Living Trust. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report will not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.
F3	Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3).
F4	This award of RSUs was granted on January 4, 2023. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2024, January 1, 2025 and January 1, 2026, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination.
F5	This award of RSUs was granted on January 17, 2023. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2024, January 1, 2025 and January 1, 2026, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination.
F6	This award of RSUs was granted on January 1, 2024. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2025, January 1, 2026 and January 1, 2027, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination.
F7	This award of RSUs was granted on January 1, 2025. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2026, January 1, 2027 and January 1, 2028, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination.
F8	This award of RSUs was granted on January 1, 2026. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2027, January 1, 2028 and January 1, 2029, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination.