Bacon Charles A. III

SEC source: 0001144204-19-007347 · tv513511_form4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 287,925

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a pre-established Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.68 to $5.85, inclusive.

SEC source: 0001144204-19-007347 · tv513511_form4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 280,535

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a pre-established Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.30 to $5.75, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares of purchased at each separate price within the ranges set forth in footnotes (2) and (3) of this Form 4.

SEC source: 0001144204-19-006301 · tv513083_form4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 273,535

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a pre-established Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.45 to $6.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares of purchased at each separate price within the ranges set forth in this footnote (2).

SEC source: 0001144204-19-000431 · tv510343_form4.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Common Stock · 5,833 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: 0001144204-19-000431 · tv510343_form4.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,833

Underlying: Common Stock · 5,833 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: 0001144204-19-000431 · tv510343_form4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 262,925

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: 0001144204-19-000431 · tv510343_form4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 257,092

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: 0001144204-18-041997 · tv500177_4.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,666

Underlying: Common Stock · 16,667 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: 0001144204-18-041997 · tv500177_4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 251,259

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

SEC source: 0001144204-18-041997 · tv500177_4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 255,532

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: 0001144204-18-050428 · tv496110_form4.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,500

Underlying: Common Stock · 17,500 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: 0001144204-18-032499 · tv495734_form4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 238,865

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

SEC source: 0001144204-18-032499 · tv495734_form4.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,667

Underlying: Common Stock · 5,833 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: 0001144204-18-032499 · tv495734_form4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 240,477

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 100,000 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 16,667 shares of common stock from Table I, which is related to the portion of the RSUs that vested on August 30, 2017. This Form 4 correctly includes those 16,667 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.

SEC source: 0001144204-19-011764 · tv515299_4a.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 95,000

Underlying: Common Stock · 5,833 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 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.

F2 · 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.

F3 · balance_after: This Form 4 is being amended to correct information previously reported on a Form 4 filed June 1, 2018 (the "Initial Form 4") regarding the number of derivative securities beneficially owned following the transactions relating to the vesting of 5,833 RSUs, which reporting also affected the reporting of the number of derivative securities beneficially owned on subsequent Forms 4.

F4 · balance_after: The Initial Form 4 inadvertently excluded 83,333 RSUs granted on August 30, 2017 (the "August 2017 Award") from the number of derivative securities beneficially owned following the transactions. The August 2017 Award includes 50,000 RSUs that 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.