Jordan John T. Jr.

SEC source: 0001104659-19-071435 · tm1924830d4_4.xml · nonDerivative · entry 1

Jordan John T. Jr. · CIK 0001679802 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,896

F1 · kind: Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units on August 1, 2019.

SEC source: 0001144204-19-037646 · tv526487_4.xml · derivative · entry 2

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,834

Underlying: Common Stock · 4,166 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. common stock, exempt under Rule 16b-3(d)(1) & (3).

F1 · 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) & (3).

F2 · derivative.exercise_date: This award of RSUs was granted on August 30, 2017. 50% of the award is subject to service-based vesting conditions and vests in equal installments on each of August 30, 2017, August 1, 2018 and August 1, 2019, subject to continued employment through the applicable vesting date. The remaining 50% of the award will vest upon the achievement of a specified target share price of the Company's common stock on the Nasdaq Capital Market or other applicable principal securities exchange on which the Company's shares are then listed between August 1, 2018 and August 1, 2021, subject to continued employment from August 1, 2017 through the later of July 31, 2019 and the date on which the Compensation Committee of the Board of Directors certifies the achievement of the performance goal.

F2 · derivative.expiration_date: This award of RSUs was granted on August 30, 2017. 50% of the award is subject to service-based vesting conditions and vests in equal installments on each of August 30, 2017, August 1, 2018 and August 1, 2019, subject to continued employment through the applicable vesting date. The remaining 50% of the award will vest upon the achievement of a specified target share price of the Company's common stock on the Nasdaq Capital Market or other applicable principal securities exchange on which the Company's shares are then listed between August 1, 2018 and August 1, 2021, subject to continued employment from August 1, 2017 through the later of July 31, 2019 and the date on which the Compensation Committee of the Board of Directors certifies the achievement of the performance goal.

SEC source: 0001144204-19-037646 · tv526487_4.xml · nonDerivative · entry 1

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,140

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 · 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) & (3).

SEC source: 0001144204-19-011767 · tv515302_4.xml · derivative · entry 1

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,000

Underlying: Common Stock · 4,000 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) & (3).

F2 · derivative.exercise_date: This award of RSUs was granted on 02/27/2019. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2020, January 1, 2021 and January 1, 2022, subject to continued service through the applicable vesting date.

F2 · derivative.expiration_date: This award of RSUs was granted on 02/27/2019. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2020, January 1, 2021 and January 1, 2022, subject to continued service through the applicable vesting date.

SEC source: 0001144204-19-001386 · tv510906_4a.xml · nonDerivative · entry 1

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,974

F1 · date: This Form 4 is being amended to correct information previously reported regarding the sale of shares to cover withholding taxes due upon the settlement of restricted stock units of Limbach Holdings, Inc. ("RSUs") that vested on January 1, 2019. On January 8, 2019, shares of common stock were delivered to the undersigned in settlement of the vested RSUs, and a portion of these shares were immediately sold to cover withholding taxes due upon such settlement at a weighted average price of $4.55 per share. The original filing had reported that the settlement occurred on January 1, 2019 at a weighted average price of $3.68.

F2 · kind: Represents shares sold to cover withholding taxes due upon the settlement of RSUs that vested on January 1, 2019.

F1 · shares: This Form 4 is being amended to correct information previously reported regarding the sale of shares to cover withholding taxes due upon the settlement of restricted stock units of Limbach Holdings, Inc. ("RSUs") that vested on January 1, 2019. On January 8, 2019, shares of common stock were delivered to the undersigned in settlement of the vested RSUs, and a portion of these shares were immediately sold to cover withholding taxes due upon such settlement at a weighted average price of $4.55 per share. The original filing had reported that the settlement occurred on January 1, 2019 at a weighted average price of $3.68.

F1 · price: This Form 4 is being amended to correct information previously reported regarding the sale of shares to cover withholding taxes due upon the settlement of restricted stock units of Limbach Holdings, Inc. ("RSUs") that vested on January 1, 2019. On January 8, 2019, shares of common stock were delivered to the undersigned in settlement of the vested RSUs, and a portion of these shares were immediately sold to cover withholding taxes due upon such settlement at a weighted average price of $4.55 per share. The original filing had reported that the settlement occurred on January 1, 2019 at a weighted average price of $3.68.

F1 · balance_after: This Form 4 is being amended to correct information previously reported regarding the sale of shares to cover withholding taxes due upon the settlement of restricted stock units of Limbach Holdings, Inc. ("RSUs") that vested on January 1, 2019. On January 8, 2019, shares of common stock were delivered to the undersigned in settlement of the vested RSUs, and a portion of these shares were immediately sold to cover withholding taxes due upon such settlement at a weighted average price of $4.55 per share. The original filing had reported that the settlement occurred on January 1, 2019 at a weighted average price of $3.68.

SEC source: 0001144204-19-000427 · tv510342_form4.xml · derivative · entry 5

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,000

Underlying: Common Stock · 666 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. common stock, exempt under Rule 16b-3(d)(1) & (3).

F3 · derivative.exercise_date: This award of RSUs was granted on 04/13/2018. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2019, January 1, 2020 and January 1, 2021, subject to continued employment through the applicable vesting date.

F3 · derivative.expiration_date: This award of RSUs was granted on 04/13/2018. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2019, January 1, 2020 and January 1, 2021, subject to continued employment through the applicable vesting date.

SEC source: 0001144204-19-000427 · tv510342_form4.xml · derivative · entry 4

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,666

Underlying: Common Stock · 2,000 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. common stock, exempt under Rule 16b-3(d)(1) & (3).

F2 · derivative.exercise_date: This award of RSUs was granted on 08/30/2017. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2018, January 1, 2019 and January 1, 2020, subject to continued employment through the applicable vesting date.

F2 · derivative.expiration_date: This award of RSUs was granted on 08/30/2017. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2018, January 1, 2019 and January 1, 2020, subject to continued employment through the applicable vesting date.

SEC source: 0001144204-19-000427 · tv510342_form4.xml · nonDerivative · entry 3

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: Not disclosed

F4 · kind: Represents shares sold to cover withholding taxes due on vesting of the RSUs.

SEC source: 0001144204-19-000427 · tv510342_form4.xml · nonDerivative · entry 2

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 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 · 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) & (3).

SEC source: 0001144204-19-000427 · tv510342_form4.xml · nonDerivative · entry 1

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 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 · 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) & (3).

SEC source: 0001144204-18-041998 · tv500178_4.xml · derivative · entry 3

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,666

Underlying: Common Stock · 4,167 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. common stock, exempt under Rule 16b-3(d)(1) & (3).

F1 · 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) & (3).

F2 · derivative.exercise_date: This award of RSUs was granted on 08/30/2017. 50% of the award is subject to service-based vesting conditions and vests in equal installments on each of August 30, 2017, August 1, 2018 and August 1, 2019, subject to continued employment through the applicable vesting date. The remaining 50% of the award will vest upon the achievement of a specified target share price of the Company's common stock on the Nasdaq Capital Market or other applicable principal securities exchange on which the Company's shares are then listed between August 1, 2018 and August 1, 2021, subject to continued employment from August 1, 2017 through the later of July 31, 2019 and the date on which the Compensation Committee of the Board of Directors certifies the achievement of the performance goal.

F2 · derivative.expiration_date: This award of RSUs was granted on 08/30/2017. 50% of the award is subject to service-based vesting conditions and vests in equal installments on each of August 30, 2017, August 1, 2018 and August 1, 2019, subject to continued employment through the applicable vesting date. The remaining 50% of the award will vest upon the achievement of a specified target share price of the Company's common stock on the Nasdaq Capital Market or other applicable principal securities exchange on which the Company's shares are then listed between August 1, 2018 and August 1, 2021, subject to continued employment from August 1, 2017 through the later of July 31, 2019 and the date on which the Compensation Committee of the Board of Directors certifies the achievement of the performance goal.

SEC source: 0001144204-18-041998 · tv500178_4.xml · nonDerivative · entry 2

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,054

F3 · kind: Represents shares sold to cover withholding taxes due on vesting of the RSUs.

SEC source: 0001144204-18-041998 · tv500178_4.xml · nonDerivative · entry 1

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,375

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 · 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) & (3).

SEC source: 0001144204-18-050425 · tv496107_form4.xml · derivative · entry 1

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,000

Underlying: Common Stock · 2,000 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.

F2 · derivative.exercise_date: This award of RSUs was granted on 04/13/2018. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2019, January 1, 2020 and January 1, 2021, 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.

F2 · derivative.expiration_date: This award of RSUs was granted on 04/13/2018. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2019, January 1, 2020 and January 1, 2021, 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: 0001144204-18-032500 · tv495735_form4.xml · nonDerivative · entry 2

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,208

F3 · kind: Shares withheld by the Company to satisfy minimum tax withholding requirements.

SEC source: 0001144204-18-032500 · tv495735_form4.xml · derivative · entry 3

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,000

Underlying: Common Stock · 2,000 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 08/30/2017. The remaining RSUs vest equally on January 1, 2019 and January 1, 2020, subject to continued employment through the applicable vesting date.

F4 · derivative.expiration_date: This award of RSUs was granted on 08/30/2017. The remaining RSUs vest equally on January 1, 2019 and January 1, 2020, subject to continued employment through the applicable vesting date.

SEC source: 0001144204-18-032500 · tv495735_form4.xml · nonDerivative · entry 1

Jordan John T. Jr. · CIK 0001679802 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,916

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 · 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 · balance_after: The reporting person initially filed a Form 4 on September 1, 2017 (the "Initial Form 4") reporting the award of 25,000 RSUs granted on 08/30/2017. Fifty percent (50%) of this RSU award was granted subject to service-based vesting conditions and vests in equal installments on each of August 30, 2017, August 1, 2018 and August 1, 2019, subject to continued employment through the applicable vesting date. The remaining fifty percent (50%) of the award is subject to performance-based vesting conditions disclosed in the Initial Form 4. The Initial Form 4 inadvertently omitted 2,816 shares of common stock from Table I, which is related to the portion of the RSUs that vested on August 30, 2017, net of shares forfeited for withholding. This Form 4 correctly includes those 2,816 shares in Box 5 to Table I of this filing, in addition to the vesting of the RSUs disclosed in Line 1 to Table I.