LMB

SEC source: 0001628280-23-024801 · wk-form4_1689194834.xml · derivative · entry 3

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,308 shares

Expires 2023-07-20

SEC source: 0001628280-23-024801 · wk-form4_1689194834.xml · nonDerivative · entry 2

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,356

F1 · kind: On July 11, 2023, the Reporting Person exercised a warrant to purchase 3,308 shares of the Limbach Holdings, Inc. (the "Company") Common Stock for $12.50 per share. The Reporting Person paid the exercise price on a cashless basis, resulting in the issuer's withholding of 1,661 of the warrant shares to pay the exercise price and issuing to the Reporting Person the remaining 1,647 shares.

SEC source: 0001628280-23-024801 · wk-form4_1689194834.xml · nonDerivative · entry 1

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,017

SEC source: 0001628280-23-024268 · wk-form4_1688589226.xml · derivative · entry 3

Brooks Jayme L. · CIK 0001447591 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,208

Underlying: Common Stock · 292 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Limbach Holdings, Inc. common stock, exempt under Rule 16b-3(d)(1) and (3).

F3 · derivative.exercise_date: This award of RSUs was granted on June 30, 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.

F3 · derivative.expiration_date: This award of RSUs was granted on June 30, 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.

SEC source: 0001628280-23-023439 · wk-form4_1687810107.xml · derivative · entry 2

Bacon Charles A. III · CIK 0001679798 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,151 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: This award of RSUs was granted on May 1, 2023 in accordance with the Reporting Person's Transition Employment Agreement dated January 17, 2023. The award was subject to service-based vesting conditions and vested on the date of the Company's 2023 annual meeting of stockholders, which occurred on June 22, 2023, subject to continued service through the applicable vesting date.

F2 · derivative.expiration_date: This award of RSUs was granted on May 1, 2023 in accordance with the Reporting Person's Transition Employment Agreement dated January 17, 2023. The award was subject to service-based vesting conditions and vested on the date of the Company's 2023 annual meeting of stockholders, which occurred on June 22, 2023, subject to continued service through the applicable vesting date.

SEC source: 0001628280-23-023439 · wk-form4_1687810107.xml · nonDerivative · entry 1

Bacon Charles A. III · CIK 0001679798 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 474,485

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001628280-23-020708 · wk-form4_1685743170.xml · derivative · entry 5

PRATT GORDON G · CIK 0001409889 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 100,000 shares

Expires 2023-07-20

F1 · ownership.nature: Represents securities held by Fund Management Group LLC, of which the reporting person is the managing member and controlling equity holder. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

SEC source: 0001628280-23-020708 · wk-form4_1685743170.xml · nonDerivative · entry 2

PRATT GORDON G · CIK 0001409889 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 227,341

F2 · kind: On June 1, 2023, the Reporting Person exercised a warrant to purchase 100,000 shares of the Limbach Holdings, Inc. (the "Company") Common Stock for $15.00 per share. The Reporting Person paid the exercise price on a cashless basis, resulting in the issuer's withholding of 70,939 of the warrant shares to pay the exercise price and issuing to the Reporting Person the remaining 29,061 shares.

F1 · ownership.nature: Represents securities held by Fund Management Group LLC, of which the reporting person is the managing member and controlling equity holder. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

SEC source: 0001628280-23-020708 · wk-form4_1685743170.xml · nonDerivative · entry 1

PRATT GORDON G · CIK 0001409889 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 298,280

F1 · ownership.nature: Represents securities held by Fund Management Group LLC, of which the reporting person is the managing member and controlling equity holder. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

SEC source: 0001628280-23-018505 · wf-form4_168427431897479.xml · derivative · entry 3

Bacon Charles A. III · CIK 0001679798 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,151

Underlying: Common Stock · 1,151 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3.

F3 · derivative.exercise_date: This award of RSUs was granted on May 1, 2023 in accordance with the Reporting Person's Transition Employment Agreement dated January 17, 2023. The award is subject to service-based vesting conditions and will vest on the date of the Company's 2023 annual meeting of stockholders, to occur on or around June 22, 2023, subject to continued service through the applicable vesting date.

F3 · derivative.expiration_date: This award of RSUs was granted on May 1, 2023 in accordance with the Reporting Person's Transition Employment Agreement dated January 17, 2023. The award is subject to service-based vesting conditions and will vest on the date of the Company's 2023 annual meeting of stockholders, to occur on or around June 22, 2023, subject to continued service through the applicable vesting date.

SEC source: 0001628280-23-018505 · wf-form4_168427431897479.xml · derivative · entry 2

Bacon Charles A. III · CIK 0001679798 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 42,131 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3.

F2 · derivative.exercise_date: Represents certain unvested shares of service-based restricted stock units of 3,889, 17,094 and 21,148 granted on January 1, 2021, January, 1, 2022 and January 4, 2023, respectively, that were forfeited on April 30, 2023 in accordance with the Reporting Person's Transition Employment Agreement dated January 17, 2023.

F2 · derivative.expiration_date: Represents certain unvested shares of service-based restricted stock units of 3,889, 17,094 and 21,148 granted on January 1, 2021, January, 1, 2022 and January 4, 2023, respectively, that were forfeited on April 30, 2023 in accordance with the Reporting Person's Transition Employment Agreement dated January 17, 2023.

SEC source: 0001628280-23-018415 · wf-form4_168426797025580.xml · derivative · entry 3

Sharp Jay · CIK 0001965562 · President of Limbach

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 311 shares

Expires 2023-07-20

SEC source: 0001628280-23-018415 · wf-form4_168426797025580.xml · nonDerivative · entry 2

Sharp Jay · CIK 0001965562 · President of Limbach

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,566

F1 · kind: On April 24, 2023, the Reporting Person exercised a warrant to purchase 311 shares of the Limbach Holdings, Inc. (the "Company") Common Stock for $12.50 per share. The Reporting Person paid the exercise price on a cashless basis, resulting in the issuer's withholding of 222 of the warrant shares to pay the exercise price and issuing to the Reporting Person the remaining 89 shares.

SEC source: 0001628280-23-018415 · wf-form4_168426797025580.xml · nonDerivative · entry 1

Sharp Jay · CIK 0001965562 · President of Limbach

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,788

SEC source: 0001628280-23-007537 · wf-form4_167848328190126.xml · nonDerivative · entry 3

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97,453

F3 · shares: Reflects the withholding of 5,801 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.

SEC source: 0001628280-23-007537 · wf-form4_167848328190126.xml · nonDerivative · entry 2

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 103,254

F2 · shares: Represents 10,209 shares of Limbach Holdings, Inc. common stock issued to the reporting person on March 8, 2023 upon vesting of 7,500 performance-based restricted stock units, based on the achievement of certain pre-established performance goals at above-target levels for the performance period commencing on January 1, 2020 through December 31, 2022. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3.

SEC source: 0001628280-23-007537 · wf-form4_167848328190126.xml · nonDerivative · entry 1

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,045

F1 · shares: Represents 13,613 shares of Limbach Holdings, Inc. common stock issued to the reporting person on March 8, 2023 upon vesting of 10,000 performance-based restricted stock units, based on the achievement of certain pre-established performance goals at above-target levels for the performance period commencing on January 1, 2020 through December 31, 2022. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3.

SEC source: 0001628280-23-007535 · wf-form4_167848326738474.xml · nonDerivative · entry 3

Brooks Jayme L. · CIK 0001447591 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,354

F3 · shares: Reflects the withholding of 6,611 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.

SEC source: 0001628280-23-007535 · wf-form4_167848326738474.xml · nonDerivative · entry 2

Brooks Jayme L. · CIK 0001447591 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,965

F2 · shares: Represents 8,167 shares of Limbach Holdings, Inc. common stock issued to the reporting person on March 8, 2023 upon vesting of 6,000 performance-based restricted stock units, based on the achievement of certain pre-established performance goals at above-target levels for the performance period commencing on January 1, 2020 through December 31, 2022. These performance-based RSUs were granted on October 1, 2019 and modified on December 18, 2020 by the Compensation Committee to align the award with the Company's other performance awards granted to certain executives on January 1, 2020. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3.

SEC source: 0001628280-23-007535 · wf-form4_167848326738474.xml · nonDerivative · entry 1

Brooks Jayme L. · CIK 0001447591 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,798

F1 · shares: Represents 13,613 shares of Limbach Holdings, Inc. common stock issued to the reporting person on March 8, 2023 upon vesting of 10,000 performance-based restricted stock units, based on the achievement of certain pre-established performance goals at above-target levels for the performance period commencing on January 1, 2020 through December 31, 2022. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3.

SEC source: 0001628280-23-007534 · wf-form4_167848325163261.xml · nonDerivative · entry 2

Bacon Charles A. III · CIK 0001679798 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 473,334

F2 · shares: Reflects the withholding of 5,801 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.

SEC source: 0001628280-23-007534 · wf-form4_167848325163261.xml · nonDerivative · entry 1

Bacon Charles A. III · CIK 0001679798 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 479,135

F1 · shares: Represents 23,822 shares of Limbach Holdings, Inc. common stock issued to the reporting person on March 8, 2023 upon vesting of 17,500 performance-based restricted stock units, based on the achievement of certain pre-established performance goals at above-target levels for the performance period commencing on January 1, 2020 through December 31, 2022. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3.

SEC source: 0001628280-23-001178 · wf-form4_167407431877158.xml · derivative · entry 1

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,205

Underlying: Common Stock · 3,240 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Limbach Holdings, Inc. common stock, exempt under Rule 16b-3(d)(1) and (3).

F2 · derivative.exercise_date: This award of RSUs was granted on 01/17/2023. 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.

F2 · derivative.expiration_date: This award of RSUs was granted on 01/17/2023. 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.

SEC source: 0001628280-23-000311 · wf-form4_167287420471636.xml · derivative · entry 5

ALVARADO LINDA G · CIK 0001122788 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,973

Underlying: Common Stock · 6,906 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F4 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

F4 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · derivative · entry 10

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,965

Underlying: Common Stock · 14,096 shares

Expires not disclosed

F2 · derivative.exercise_price: 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(d)(1) and (3).

F7 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. 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.

F7 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. 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.

SEC source: 0001628280-23-000326 · wf-form4_167287507651203.xml · derivative · entry 7

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,973

Underlying: Common Stock · 6,906 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F5 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

F5 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

SEC source: 0001628280-23-000310 · wf-form4_167287417872453.xml · derivative · entry 8

Horowitz Joshua · CIK 0001612424 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,973

Underlying: Common Stock · 6,906 shares

Expires not disclosed

F2 · derivative.exercise_price: 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.

F6 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

F6 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

SEC source: 0001628280-23-000314 · wf-form4_167287429077121.xml · derivative · entry 12

Brooks Jayme L. · CIK 0001447591 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,916

Underlying: Common Stock · 13,320 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3.

F9 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. 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.

F9 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. 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.

SEC source: 0001628280-23-000312 · wf-form4_167287423005254.xml · derivative · entry 7

Krzeminski Laurel J · CIK 0001493187 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,973

Underlying: Common Stock · 6,906 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F5 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

F5 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

SEC source: 0001628280-23-000308 · wf-form4_167287410616422.xml · derivative · entry 7

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,973

Underlying: Common Stock · 6,906 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F5 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

F5 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

SEC source: 0001628280-23-000309 · wf-form4_167287415645311.xml · derivative · entry 8

Bacon Charles A. III · CIK 0001679798 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,131

Underlying: Common Stock · 21,148 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3.

F6 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. 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 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. 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.

SEC source: 0001628280-23-000307 · wf-form4_167287408156910.xml · derivative · entry 9

PRATT GORDON G · CIK 0001409889 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,973

Underlying: Common Stock · 6,906 shares

Expires not disclosed

F3 · derivative.exercise_price: 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.

F7 · derivative.exercise_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

F7 · derivative.expiration_date: This award of RSUs was granted on 01/04/2023. The RSUs are scheduled to cliff vest on January 1, 2024.

SEC source: 0001628280-23-000311 · wf-form4_167287420471636.xml · derivative · entry 4

ALVARADO LINDA G · CIK 0001122788 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,067

Underlying: Common Stock · 8,876 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: This award of RSUs was granted on 01/01/2022. The RSUs are scheduled to cliff vest on January 1, 2023.

F3 · derivative.expiration_date: This award of RSUs was granted on 01/01/2022. The RSUs are scheduled to cliff vest on January 1, 2023.

SEC source: 0001628280-23-000311 · wf-form4_167287420471636.xml · derivative · entry 3

ALVARADO LINDA G · CIK 0001122788 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,943

Underlying: Common Stock · 1,067 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: This award of RSUs was granted on 09/01/2021. The award is subject to service-based vesting conditions and vests 14.92% on January 1, 2022 and 42.54% on each of January 1, 2023 and January 1, 2024, subject to continued service through the applicable vesting date.

F2 · derivative.expiration_date: This award of RSUs was granted on 09/01/2021. The award is subject to service-based vesting conditions and vests 14.92% on January 1, 2022 and 42.54% on each of January 1, 2023 and January 1, 2024, subject to continued service through the applicable vesting date.

SEC source: 0001628280-23-000311 · wf-form4_167287420471636.xml · nonDerivative · entry 2

ALVARADO LINDA G · CIK 0001122788 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,416

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001628280-23-000311 · wf-form4_167287420471636.xml · nonDerivative · entry 1

ALVARADO LINDA G · CIK 0001122788 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,540

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · derivative · entry 9

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,869

Underlying: Common Stock · 5,489 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: 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(d)(1) and (3).

F6 · derivative.exercise_date: This award of RSUs was granted on 01/01/2022. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2023, January 1, 2024 and January 1, 2025, 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 · derivative.expiration_date: This award of RSUs was granted on 01/01/2022. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2023, January 1, 2024 and January 1, 2025, 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.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · derivative · entry 8

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,358

Underlying: Common Stock · 3,889 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: 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(d)(1) and (3).

F5 · derivative.exercise_date: This award of RSUs was granted on 01/01/2021. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2022, January 1, 2023 and January 1, 2024, 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 · derivative.expiration_date: This award of RSUs was granted on 01/01/2021. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2022, January 1, 2023 and January 1, 2024, 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.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · derivative · entry 7

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,247

Underlying: Common Stock · 2,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: 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(d)(1) and (3).

F4 · derivative.exercise_date: This award of RSUs was granted on 05/11/2020. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2021, January 1, 2022 and January 1, 2023, subject to continued employment through the applicable vesting date.

F4 · derivative.expiration_date: This award of RSUs was granted on 05/11/2020. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2021, January 1, 2022 and January 1, 2023, subject to continued employment through the applicable vesting date.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · derivative · entry 6

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,747

Underlying: Common Stock · 3,334 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: 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(d)(1) and (3).

F3 · derivative.exercise_date: This award of RSUs was granted on 01/01/2020. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2021, January 1, 2022 and January 1, 2023, 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 RSUs will be reported on a Form 4 within two business days of the date of such determination.

F3 · derivative.expiration_date: This award of RSUs was granted on 01/01/2020. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2021, January 1, 2022 and January 1, 2023, 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 RSUs will be reported on a Form 4 within two business days of the date of such determination.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · nonDerivative · entry 5

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,432

F1 · shares: Reflects the withholding of 4,513 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.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · nonDerivative · entry 4

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,945

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · nonDerivative · entry 3

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 78,456

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · nonDerivative · entry 2

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,567

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001628280-23-000313 · wf-form4_167287426761516.xml · nonDerivative · entry 1

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,067

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001628280-23-000326 · wf-form4_167287507651203.xml · derivative · entry 6

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,067

Underlying: Common Stock · 8,876 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F4 · derivative.exercise_date: This award of RSUs was granted on 01/01/2022. The RSUs are scheduled to cliff vest on January 1, 2023.

F4 · derivative.expiration_date: This award of RSUs was granted on 01/01/2022. The RSUs are scheduled to cliff vest on January 1, 2023.

SEC source: 0001628280-23-000326 · wf-form4_167287507651203.xml · derivative · entry 5

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,943

Underlying: Common Stock · 1,067 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: This award of RSUs was granted on 01/1/2021. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2022, January 1, 2023 and January 1, 2024, subject to continued service through the applicable vesting date

F3 · derivative.expiration_date: This award of RSUs was granted on 01/1/2021. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2022, January 1, 2023 and January 1, 2024, subject to continued service through the applicable vesting date

SEC source: 0001628280-23-000326 · wf-form4_167287507651203.xml · derivative · entry 4

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,010

Underlying: Common Stock · 1,067 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: 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 · derivative.exercise_date: This award of RSUs was granted on 01/01/2020. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2021, January 1, 2022 and January 1, 2023, subject to continued service through the applicable vesting date.

F2 · derivative.expiration_date: This award of RSUs was granted on 01/01/2020. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2021, January 1, 2022 and January 1, 2023, subject to continued service through the applicable vesting date.

SEC source: 0001628280-23-000326 · wf-form4_167287507651203.xml · nonDerivative · entry 3

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,509

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001628280-23-000326 · wf-form4_167287507651203.xml · nonDerivative · entry 2

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,633

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.