LMB

SEC source: 0001144204-19-046750 · tv530282_4.xml · derivative · entry 1

Brooks Jayme L. · CIK 0001447591 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,215

Underlying: Common Stock · 54,215 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 October 1, 2019. 42,215 shares of common stock subject to this award are subject to service-based vesting conditions and vest on the one-year anniversary of the grant date, subject to continued service through such vesting date. 6,000 shares of common stock subject to this award are subject to service-based vesting conditions and vest in equal annual installments on each of December 31, 2020, 2021 and 2022, subject to continued service through such vesting date. The remaining 6,000 shares of common stock subject to this award shall vest upon the Company's achievement of cumulative adjusted EBITDA of the Company of at least $75,000,000 for fiscal years 2019, 2020 and 2021 (the "Performance Milestone"), subject to Participant's continuous service with the Company or a subsidiary or affiliate of the Company, as applicable, as an employee through the certification by the Compensation Committee of the achievement of the Performance Milestone, if applicable.

F2 · derivative.expiration_date: This award of RSUs was granted on October 1, 2019. 42,215 shares of common stock subject to this award are subject to service-based vesting conditions and vest on the one-year anniversary of the grant date, subject to continued service through such vesting date. 6,000 shares of common stock subject to this award are subject to service-based vesting conditions and vest in equal annual installments on each of December 31, 2020, 2021 and 2022, subject to continued service through such vesting date. The remaining 6,000 shares of common stock subject to this award shall vest upon the Company's achievement of cumulative adjusted EBITDA of the Company of at least $75,000,000 for fiscal years 2019, 2020 and 2021 (the "Performance Milestone"), subject to Participant's continuous service with the Company or a subsidiary or affiliate of the Company, as applicable, as an employee through the certification by the Compensation Committee of the achievement of the Performance Milestone, if applicable.

SEC source: 0001104659-20-138579 · tm2039154d1_4a.xml · derivative · entry 1

Brooks Jayme L. · CIK 0001447591 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,000

Underlying: Common Stock · 54,215 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 · shares: As reported in the original filing of this Form 4 on October 1, 2019, this award of RSUs was granted on October 1, 2019. 42,215 shares of common stock subject to this award were subject to service-based vesting conditions and vested on October 1, 2020. 6,000 shares of common stock subject to this award are subject to service-based vesting conditions and vest in equal annual installments on each of December 31, 2020, 2021 and 2022, subject to continued service through such vesting date. The remaining 6,000 shares of common stock subject to this award shall vest upon the Company's achievement of certain performance milestones, subject to Participant's continuous service with the Company or a subsidiary or affiliate of the Company, as applicable, as an employee through the certification by the Compensation Committee of the achievement of such performance milestones, if applicable.

F2 · derivative.exercise_date: As reported in the original filing of this Form 4 on October 1, 2019, this award of RSUs was granted on October 1, 2019. 42,215 shares of common stock subject to this award were subject to service-based vesting conditions and vested on October 1, 2020. 6,000 shares of common stock subject to this award are subject to service-based vesting conditions and vest in equal annual installments on each of December 31, 2020, 2021 and 2022, subject to continued service through such vesting date. The remaining 6,000 shares of common stock subject to this award shall vest upon the Company's achievement of certain performance milestones, subject to Participant's continuous service with the Company or a subsidiary or affiliate of the Company, as applicable, as an employee through the certification by the Compensation Committee of the achievement of such performance milestones, if applicable.

F2 · derivative.expiration_date: As reported in the original filing of this Form 4 on October 1, 2019, this award of RSUs was granted on October 1, 2019. 42,215 shares of common stock subject to this award were subject to service-based vesting conditions and vested on October 1, 2020. 6,000 shares of common stock subject to this award are subject to service-based vesting conditions and vest in equal annual installments on each of December 31, 2020, 2021 and 2022, subject to continued service through such vesting date. The remaining 6,000 shares of common stock subject to this award shall vest upon the Company's achievement of certain performance milestones, subject to Participant's continuous service with the Company or a subsidiary or affiliate of the Company, as applicable, as an employee through the certification by the Compensation Committee of the achievement of such performance milestones, if applicable.

F2 · derivative.underlying_shares: As reported in the original filing of this Form 4 on October 1, 2019, this award of RSUs was granted on October 1, 2019. 42,215 shares of common stock subject to this award were subject to service-based vesting conditions and vested on October 1, 2020. 6,000 shares of common stock subject to this award are subject to service-based vesting conditions and vest in equal annual installments on each of December 31, 2020, 2021 and 2022, subject to continued service through such vesting date. The remaining 6,000 shares of common stock subject to this award shall vest upon the Company's achievement of certain performance milestones, subject to Participant's continuous service with the Company or a subsidiary or affiliate of the Company, as applicable, as an employee through the certification by the Compensation Committee of the achievement of such performance milestones, if applicable.

SEC source: 0001104659-19-071434 · tm1924830d3_4.xml · nonDerivative · entry 1

McCann Michael M · CIK 0001760470 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,226

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: 0001104659-19-071436 · tm1924830d5_4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 297,331

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: 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: 0001104659-19-071433 · tm1924830d2_4.xml · nonDerivative · entry 1

Thorne Kristopher L. · CIK 0001679795 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,116

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: 0001144204-19-037644 · tv526485_4.xml · derivative · entry 2

McCann Michael M · CIK 0001760470 · Co-Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,168

Underlying: Common Stock · 1,333 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.

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 · 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: 0001144204-19-037644 · tv526485_4.xml · nonDerivative · entry 1

McCann Michael M · CIK 0001760470 · Co-Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,802

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.

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: 0001144204-19-037645 · tv526486_4.xml · derivative · entry 2

Thorne Kristopher L. · CIK 0001679795 · Co-Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,500

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: 0001144204-19-037645 · tv526486_4.xml · nonDerivative · entry 1

Thorne Kristopher L. · CIK 0001679795 · Co-Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,285

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: 0001144204-19-037647 · tv526488_4.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,501

Underlying: Common Stock · 16,666 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).

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: 0001144204-19-037647 · tv526488_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: 304,591

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: 0001144204-19-030088 · tv523217_form4.xml · derivative · entry 2

1347 Investors LLC · CIK 0001612411 · Director · 10% owner · See Remarks

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,333

Underlying: Common Stock · 21,833 shares

Expires 2021-07-20

F4 · derivative.exercise_price: Each $11.50 Exercise Price Warrant is exercisable to purchase one-half of one share of common stock at an exercise price of $11.50 per whole share, subject to adjustment as described under the heading "Description of Securities--Warrants included as part of units" in the Issuer's registration statement on Form S-1 (File No. 333-195695).

F5 · kind: Represents a transfer of $11.50 Exercise Price Warrants pursuant to a Loan and Security Agreement, dated July 18, 2016, between 1347 Investors and American Service Insurance Company, Inc. ("ASIC"). 1347 Investors previously transferred 122,500 of the $11.50 Exercise Price Warrants to ASIC (as reported on a Form 4 filed on July 13, 2018).

F1 · ownership.direct: The securities are held directly by 1347 Investors LLC ("1347 Investors"). Larry G. Swets, Jr. and D. Kyle Cerminara are each a manager of 1347 Investors and share voting and dispositive control over the securities held by 1347 Investors. Accordingly, Messrs. Swets and Cerminara may be deemed to share beneficial ownership over the securities held directly by 1347 Investors. Each of the Reporting Persons disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, and this Report shall not be deemed an admission that the Reporting Persons are the beneficial owners of the securities for purposes of Section 16 or for any other purpose.

F2 · ownership.direct: Messrs. Swets and Cerminara each serve on the Board of Directors of the Issuer. Mr. Swets holds 13,198 shares of common stock of the Issuer, and Messrs. Swets and Cerminara hold 6,402 and 3,200 restricted stock units, respectively, granted by the Issuer. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting.

F3 · ownership.direct: In addition, CWA Asset Management Group, LLC, of which 50% is owned by Fundamental Global Investors, LLC, holds 7,080 shares of common stock for the accounts of individual investors. CWA, in its role as investment advisor for customer accounts, Fundamental Global Investors, LLC, as a 50% owner of CWA, and Mr. Cerminara, as manager of CWA, may each be deemed to beneficially own the number of shares held in CWA's customer accounts. Each of Fundamental Global Investors, LLC and Mr. Cerminara expressly disclaims such beneficial ownership.

SEC source: 0001144204-19-029014 · tv522795_4.xml · nonDerivative · entry 1

1347 Investors LLC · CIK 0001612411 · Director · 10% owner · See Remarks

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,298,114

F1 · price: The price reported represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.00 and $9.26 per share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

F2 · ownership.direct: The securities are held directly by 1347 Investors LLC ("1347 Investors"). Larry G. Swets, Jr. and D. Kyle Cerminara are each a manager of 1347 Investors and share voting and dispositive control over the securities held by 1347 Investors. Accordingly, Messrs. Swets and Cerminara may be deemed to share beneficial ownership over the securities held directly by 1347 Investors. Each of the Reporting Persons disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, and this Report shall not be deemed an admission that the Reporting Persons are the beneficial owners of the securities for purposes of Section 16 or for any other purpose.

F3 · ownership.direct: Messrs. Swets and Cerminara each serve on the Board of Directors of the Issuer. Mr. Swets holds 13,198 shares of common stock of the Issuer, and Messrs. Swets and Cerminara hold 6,402 and 3,200 restricted stock units, respectively, granted by the Issuer. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting.

F4 · ownership.direct: In addition, CWA Asset Management Group, LLC, of which 50% is owned by Fundamental Global Investors, LLC, holds 7,580 shares of common stock for the accounts of individual investors. CWA, in its role as investment advisor for customer accounts, Fundamental Global Investors, LLC, as a 50% owner of CWA, and Mr. Cerminara, as manager of CWA, may each be deemed to beneficially own the number of shares held in CWA's customer accounts. Each of Fundamental Global Investors, LLC and Mr. Cerminara expressly disclaims such beneficial ownership.

SEC source: 0001144204-19-028490 · tv522590_form4.xml · nonDerivative · entry 3

1347 Investors LLC · CIK 0001612411 · Director · 10% owner · See Remarks

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,498,114

F3 · price: The price reported represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.00 and $10.30 per share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

F4 · ownership.direct: The securities are held directly by 1347 Investors LLC ("1347 Investors"). Larry G. Swets, Jr. and D. Kyle Cerminara are each a manager of 1347 Investors and share voting and dispositive control over the securities held by 1347 Investors. Accordingly, Messrs. Swets and Cerminara may be deemed to share beneficial ownership over the securities held directly by 1347 Investors. Each of the Reporting Persons disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, and this Report shall not be deemed an admission that the Reporting Persons are the beneficial owners of the securities for purposes of Section 16 or for any other purpose.

F5 · ownership.direct: Messrs. Swets and Cerminara each serve on the Board of Directors of the Issuer. Mr. Swets holds 13,198 shares of common stock of the Issuer, and Messrs. Swets and Cerminara hold 6,402 and 3,200 restricted stock units, respectively, granted by the Issuer. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting.

F6 · ownership.direct: In addition, CWA Asset Management Group, LLC, of which 50% is owned by Fundamental Global Investors, LLC, holds 7,580 shares of common stock for the accounts of individual investors. CWA, in its role as investment advisor for customer accounts, Fundamental Global Investors, LLC, as a 50% owner of CWA, and Mr. Cerminara, as manager of CWA, may each be deemed to beneficially own the number of shares held in CWA's customer accounts. Each of Fundamental Global Investors, LLC and Mr. Cerminara expressly disclaims such beneficial ownership.

SEC source: 0001144204-19-028490 · tv522590_form4.xml · nonDerivative · entry 2

1347 Investors LLC · CIK 0001612411 · Director · 10% owner · See Remarks

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,692,554

F2 · price: The price reported represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.00 and $10.25 per share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

F4 · ownership.direct: The securities are held directly by 1347 Investors LLC ("1347 Investors"). Larry G. Swets, Jr. and D. Kyle Cerminara are each a manager of 1347 Investors and share voting and dispositive control over the securities held by 1347 Investors. Accordingly, Messrs. Swets and Cerminara may be deemed to share beneficial ownership over the securities held directly by 1347 Investors. Each of the Reporting Persons disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, and this Report shall not be deemed an admission that the Reporting Persons are the beneficial owners of the securities for purposes of Section 16 or for any other purpose.

F5 · ownership.direct: Messrs. Swets and Cerminara each serve on the Board of Directors of the Issuer. Mr. Swets holds 13,198 shares of common stock of the Issuer, and Messrs. Swets and Cerminara hold 6,402 and 3,200 restricted stock units, respectively, granted by the Issuer. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting.

F6 · ownership.direct: In addition, CWA Asset Management Group, LLC, of which 50% is owned by Fundamental Global Investors, LLC, holds 7,580 shares of common stock for the accounts of individual investors. CWA, in its role as investment advisor for customer accounts, Fundamental Global Investors, LLC, as a 50% owner of CWA, and Mr. Cerminara, as manager of CWA, may each be deemed to beneficially own the number of shares held in CWA's customer accounts. Each of Fundamental Global Investors, LLC and Mr. Cerminara expressly disclaims such beneficial ownership.

SEC source: 0001144204-19-028490 · tv522590_form4.xml · nonDerivative · entry 1

1347 Investors LLC · CIK 0001612411 · Director · 10% owner · See Remarks

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,726,700

F1 · price: The price reported represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.0050 and $10.0597 per share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

F4 · ownership.direct: The securities are held directly by 1347 Investors LLC ("1347 Investors"). Larry G. Swets, Jr. and D. Kyle Cerminara are each a manager of 1347 Investors and share voting and dispositive control over the securities held by 1347 Investors. Accordingly, Messrs. Swets and Cerminara may be deemed to share beneficial ownership over the securities held directly by 1347 Investors. Each of the Reporting Persons disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, and this Report shall not be deemed an admission that the Reporting Persons are the beneficial owners of the securities for purposes of Section 16 or for any other purpose.

F5 · ownership.direct: Messrs. Swets and Cerminara each serve on the Board of Directors of the Issuer. Mr. Swets holds 13,198 shares of common stock of the Issuer, and Messrs. Swets and Cerminara hold 6,402 and 3,200 restricted stock units, respectively, granted by the Issuer. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting.

F6 · ownership.direct: In addition, CWA Asset Management Group, LLC, of which 50% is owned by Fundamental Global Investors, LLC, holds 7,580 shares of common stock for the accounts of individual investors. CWA, in its role as investment advisor for customer accounts, Fundamental Global Investors, LLC, as a 50% owner of CWA, and Mr. Cerminara, as manager of CWA, may each be deemed to beneficially own the number of shares held in CWA's customer accounts. Each of Fundamental Global Investors, LLC and Mr. Cerminara expressly disclaims such beneficial ownership.

SEC source: 0001144204-19-027786 · tv522296_4.xml · nonDerivative · entry 3

1347 Investors LLC · CIK 0001612411 · Director · 10% owner · See Remarks

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,797,730

F3 · price: The price reported represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.20 and $10.75 per share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

F4 · ownership.direct: The securities are held directly by 1347 Investors LLC ("1347 Investors"). Larry G. Swets, Jr. and D. Kyle Cerminara are each a manager of 1347 Investors and share voting and dispositive control over the securities held by 1347 Investors. Accordingly, Messrs. Swets and Cerminara may be deemed to share beneficial ownership over the securities held directly by 1347 Investors. Each of the Reporting Persons disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, and this Report shall not be deemed an admission that the Reporting Persons are the beneficial owners of the securities for purposes of Section 16 or for any other purpose.

F5 · ownership.direct: Messrs. Swets and Cerminara each serve on the Board of Directors of the Issuer. Mr. Swets holds 13,198 shares of common stock of the Issuer, and Messrs. Swets and Cerminara hold 6,402 and 3,200 restricted stock units, respectively, granted by the Issuer. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting.

F6 · ownership.direct: In addition, CWA Asset Management Group, LLC, of which 50% is owned by Fundamental Global Investors, LLC, holds 7,580 shares of common stock for the accounts of individual investors. CWA, in its role as investment advisor for customer accounts, Fundamental Global Investors, LLC, as a 50% owner of CWA, and Mr. Cerminara, as manager of CWA, may each be deemed to beneficially own the number of shares held in CWA's customer accounts. Each of Fundamental Global Investors, LLC and Mr. Cerminara expressly disclaims such beneficial ownership.

SEC source: 0001144204-19-027786 · tv522296_4.xml · nonDerivative · entry 2

1347 Investors LLC · CIK 0001612411 · Director · 10% owner · See Remarks

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,868,173

F2 · price: The price reported represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.50 and $11.175 per share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

F4 · ownership.direct: The securities are held directly by 1347 Investors LLC ("1347 Investors"). Larry G. Swets, Jr. and D. Kyle Cerminara are each a manager of 1347 Investors and share voting and dispositive control over the securities held by 1347 Investors. Accordingly, Messrs. Swets and Cerminara may be deemed to share beneficial ownership over the securities held directly by 1347 Investors. Each of the Reporting Persons disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, and this Report shall not be deemed an admission that the Reporting Persons are the beneficial owners of the securities for purposes of Section 16 or for any other purpose.

F5 · ownership.direct: Messrs. Swets and Cerminara each serve on the Board of Directors of the Issuer. Mr. Swets holds 13,198 shares of common stock of the Issuer, and Messrs. Swets and Cerminara hold 6,402 and 3,200 restricted stock units, respectively, granted by the Issuer. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting.

F6 · ownership.direct: In addition, CWA Asset Management Group, LLC, of which 50% is owned by Fundamental Global Investors, LLC, holds 7,580 shares of common stock for the accounts of individual investors. CWA, in its role as investment advisor for customer accounts, Fundamental Global Investors, LLC, as a 50% owner of CWA, and Mr. Cerminara, as manager of CWA, may each be deemed to beneficially own the number of shares held in CWA's customer accounts. Each of Fundamental Global Investors, LLC and Mr. Cerminara expressly disclaims such beneficial ownership.

SEC source: 0001144204-19-027786 · tv522296_4.xml · nonDerivative · entry 1

1347 Investors LLC · CIK 0001612411 · Director · 10% owner · See Remarks

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,318,515

F1 · price: The price reported represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.00 and $11.2456 per share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

F4 · ownership.direct: The securities are held directly by 1347 Investors LLC ("1347 Investors"). Larry G. Swets, Jr. and D. Kyle Cerminara are each a manager of 1347 Investors and share voting and dispositive control over the securities held by 1347 Investors. Accordingly, Messrs. Swets and Cerminara may be deemed to share beneficial ownership over the securities held directly by 1347 Investors. Each of the Reporting Persons disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, and this Report shall not be deemed an admission that the Reporting Persons are the beneficial owners of the securities for purposes of Section 16 or for any other purpose.

F5 · ownership.direct: Messrs. Swets and Cerminara each serve on the Board of Directors of the Issuer. Mr. Swets holds 13,198 shares of common stock of the Issuer, and Messrs. Swets and Cerminara hold 6,402 and 3,200 restricted stock units, respectively, granted by the Issuer. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting.

F6 · ownership.direct: In addition, CWA Asset Management Group, LLC, of which 50% is owned by Fundamental Global Investors, LLC, holds 7,580 shares of common stock for the accounts of individual investors. CWA, in its role as investment advisor for customer accounts, Fundamental Global Investors, LLC, as a 50% owner of CWA, and Mr. Cerminara, as manager of CWA, may each be deemed to beneficially own the number of shares held in CWA's customer accounts. Each of Fundamental Global Investors, LLC and Mr. Cerminara expressly disclaims such beneficial ownership.

SEC source: 0001144204-19-016363 · tv517357_form4.xml · derivative · entry 1

Cerminara Kyle · CIK 0001619991 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,200

Underlying: Common Stock · 3,200 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.

F2 · derivative.exercise_date: This award of RSUs was granted on 03/26/2019. 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 03/26/2019. 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: 0001144204-19-011769 · tv515304_4.xml · derivative · entry 1

McCann Michael M · CIK 0001760470 · Co-Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,501

Underlying: Common Stock · 12,000 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: 0001144204-19-011749 · tv515289_form4.xml · derivative · entry 1

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,691

Underlying: Common Stock · 3,200 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 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: 0001144204-19-011748 · tv515288_form4.xml · derivative · entry 1

Krzeminski Laurel J · CIK 0001493187 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,334

Underlying: Common Stock · 3,200 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 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: 0001144204-19-011771 · tv515306_4.xml · derivative · entry 1

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,402

Underlying: Common Stock · 3,200 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 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: 0001144204-19-011770 · tv515305_4.xml · derivative · entry 1

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,402

Underlying: Common Stock · 3,200 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 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: 0001144204-19-011768 · tv515303_4.xml · derivative · entry 1

Thorne Kristopher L. · CIK 0001679795 · Co-Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,666

Underlying: Common Stock · 12,000 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: 0001144204-19-011767 · 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: 0001144204-19-011766 · tv515301_4.xml · derivative · entry 1

PRATT GORDON G · CIK 0001409889 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,402

Underlying: Common Stock · 3,200 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 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: 0001144204-19-011765 · tv515300_4.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 119,167

Underlying: Common Stock · 35,000 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: 0001144204-19-007347 · 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: 0001144204-19-001386 · 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: 0001144204-19-001385 · tv510904_4a.xml · nonDerivative · entry 1

Thorne Kristopher L. · CIK 0001679795 · Chief Operations Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,119

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 then 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 and sale 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 then 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 and sale 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 then 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 and sale 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 then 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 and sale occurred on January 1, 2019 at a weighted average price of $3.68.

SEC source: 0001144204-19-000432 · tv510344_form4.xml · derivative · entry 4

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,491

Underlying: Common Stock · 355 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 04/27/2018. 33% of the RSUs vested upon the grant date and the remaining RSUs vest equally on January 1, 2019 and January 1, 2020, subject to continued service through the applicable vesting date.

F3 · derivative.expiration_date: This award of RSUs was granted on 04/27/2018. 33% of the RSUs vested upon the grant date and the remaining RSUs vest equally on January 1, 2019 and January 1, 2020, subject to continued service through the applicable vesting date.

SEC source: 0001144204-19-000432 · tv510344_form4.xml · derivative · entry 3

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,846

Underlying: Common Stock · 1,066 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 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 service through the applicable vesting date.

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 service through the applicable vesting date.

SEC source: 0001144204-19-000432 · tv510344_form4.xml · nonDerivative · entry 2

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,776

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.

SEC source: 0001144204-19-000432 · tv510344_form4.xml · nonDerivative · entry 1

McNally Michael F · CIK 0001667559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,421

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.

SEC source: 0001144204-19-000446 · tv510352_form4.xml · derivative · entry 2

Krzeminski Laurel J · CIK 0001493187 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,134

Underlying: Common Stock · 1,066 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 06/01/2018. 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 service through the applicable vesting date.

F2 · derivative.expiration_date: This award of RSUs was granted on 06/01/2018. 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 service through the applicable vesting date.

SEC source: 0001144204-19-000446 · tv510352_form4.xml · nonDerivative · entry 1

Krzeminski Laurel J · CIK 0001493187 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,066

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.

SEC source: 0001144204-19-000444 · tv510350_form4.xml · derivative · entry 4

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,200

Underlying: Common Stock · 1,066 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 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 service 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 service through the applicable vesting date.

SEC source: 0001144204-19-000444 · tv510350_form4.xml · derivative · entry 3

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,268

Underlying: Common Stock · 1,066 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 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 service 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 service through the applicable vesting date.

SEC source: 0001144204-19-000444 · tv510350_form4.xml · nonDerivative · entry 2

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,098

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.

SEC source: 0001144204-19-000444 · tv510350_form4.xml · nonDerivative · entry 1

Young Norbert W. · CIK 0001679800 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,032

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.

SEC source: 0001144204-19-000438 · tv510348_form4.xml · derivative · entry 5

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,200

Underlying: Common Stock · 1,066 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 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 service through the applicable vesting date.

F4 · 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 service through the applicable vesting date.

SEC source: 0001144204-19-000438 · tv510348_form4.xml · derivative · entry 4

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,268

Underlying: Common Stock · 1,066 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 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 service through the applicable vesting date.

F3 · 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 service through the applicable vesting date.

SEC source: 0001144204-19-000438 · tv510348_form4.xml · nonDerivative · entry 2

SWETS LARRY G JR · CIK 0001409891 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,198

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.