{"transactions":[{"id":3346618,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock","published_at":"2019-12-10T21:16:07.000Z","date":"2019-08-21","kind":"sale","acquired":false,"shares":2169,"price":4.75,"value":10302.75,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."}],"balance_after":14116,"source":{"system":"sec-edgar","filing":"0001104659-19-071433","document":"tm1924830d2_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000110465919071433/tm1924830d2_4.xml","form_type":"4"}},{"id":3447128,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Operations Officer"}}],"security":"Restricted Stock Units","published_at":"2019-08-05T20:15:22.000Z","date":"2019-08-01","kind":"exercise","acquired":false,"shares":4166,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"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)."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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."}],"balance_after":30500,"derivative":{"underlying":"Common Stock","underlying_shares":4166},"source":{"system":"sec-edgar","filing":"0001144204-19-037645","document":"tv526486_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420419037645/tv526486_4.xml","form_type":"4"}},{"id":3447127,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Operations Officer"}}],"security":"Common Stock","published_at":"2019-08-05T20:15:22.000Z","date":"2019-08-01","kind":"exercise","acquired":true,"shares":4166,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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)."}],"balance_after":16285,"source":{"system":"sec-edgar","filing":"0001144204-19-037645","document":"tv526486_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420419037645/tv526486_4.xml","form_type":"4"}},{"id":3623179,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Operating Officer"}}],"security":"Restricted Stock Units","published_at":"2019-03-02T02:34:56.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":12000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"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)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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."}],"balance_after":34666,"derivative":{"underlying":"Common Stock","underlying_shares":12000},"source":{"system":"sec-edgar","filing":"0001144204-19-011768","document":"tv515303_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420419011768/tv515303_4.xml","form_type":"4"}},{"id":3698169,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Common Stock","published_at":"2019-01-11T01:06:11.000Z","date":"2019-01-08","kind":"sale","acquired":false,"shares":1086,"price":4.55,"value":4941.3,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"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."},{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents shares sold to cover withholding taxes due upon the settlement of RSUs that vested on January 1, 2019."},{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"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. 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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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."}],"balance_after":16833,"derivative":{"underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001144204-19-000425","document":"tv510341_form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420419000425/tv510341_form4.xml","form_type":"4"}},{"id":3708939,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Restricted Stock Units","published_at":"2019-01-03T21:58:52.000Z","date":"2019-01-01","kind":"exercise","acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"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)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This award of RSUs was granted on 08/30/2017. 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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."}],"balance_after":6000,"derivative":{"underlying":"Common Stock","underlying_shares":6000},"source":{"system":"sec-edgar","filing":"0001144204-18-050427","document":"tv496109_form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420418050427/tv496109_form4.xml","form_type":"4"}},{"id":3853248,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Restricted Stock Units","published_at":"2018-08-04T01:04:20.000Z","date":"2018-08-01","kind":"exercise","acquired":false,"shares":4167,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"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)."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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."}],"balance_after":16666,"derivative":{"underlying":"Common Stock","underlying_shares":4167},"source":{"system":"sec-edgar","filing":"0001144204-18-041999","document":"tv500179_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420418041999/tv500179_4.xml","form_type":"4"}},{"id":3853247,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Common Stock","published_at":"2018-08-04T01:04:20.000Z","date":"2018-08-01","kind":"sale","acquired":false,"shares":1277,"price":11.17,"value":14264.09,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents shares sold to cover withholding taxes due on vesting of the RSUs."}],"balance_after":9205,"source":{"system":"sec-edgar","filing":"0001144204-18-041999","document":"tv500179_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420418041999/tv500179_4.xml","form_type":"4"}},{"id":3853246,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Common Stock","published_at":"2018-08-04T01:04:20.000Z","date":"2018-08-01","kind":"exercise","acquired":true,"shares":4167,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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)."}],"balance_after":10482,"source":{"system":"sec-edgar","filing":"0001144204-18-041999","document":"tv500179_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420418041999/tv500179_4.xml","form_type":"4"}},{"id":3910785,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Restricted Stock Units","published_at":"2018-06-01T22:52:24.000Z","date":"2018-01-01","kind":"exercise","acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"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."}],"balance_after":4000,"derivative":{"underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001144204-18-032495","document":"tv495730_form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420418032495/tv495730_form4.xml","form_type":"4"}},{"id":3910784,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Common Stock","published_at":"2018-06-01T22:52:24.000Z","date":"2018-03-01","kind":"tax_withholding","acquired":false,"shares":688,"price":11.84,"value":8145.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Shares withheld by the Company to satisfy minimum tax withholding requirements."}],"balance_after":6315,"source":{"system":"sec-edgar","filing":"0001144204-18-032495","document":"tv495730_form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420418032495/tv495730_form4.xml","form_type":"4"}},{"id":3910783,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Common Stock","published_at":"2018-06-01T22:52:24.000Z","date":"2018-01-01","kind":"exercise","acquired":true,"shares":2000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"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 2,858 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 2,858 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."}],"balance_after":7003,"source":{"system":"sec-edgar","filing":"0001144204-18-032495","document":"tv495730_form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420418032495/tv495730_form4.xml","form_type":"4"}},{"id":4580162,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Additional Merger Warrants (right to buy)","published_at":"2016-10-14T01:00:14.000Z","date":"2016-10-11","kind":"other","acquired":true,"shares":931,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Following LMHC's dissolution and liquidation, these securities, previously held directly by LMHC, were distributed pro rata to LMHC's equity holders."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Following LMHC's dissolution and liquidation, these securities, previously held directly by LMHC, were distributed pro rata to LMHC's equity holders."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The warrants will expire five years after the date on which they first became exercisable, at 5:00 p.m., New York time, or earlier upon redemption or liquidation."}],"balance_after":931,"derivative":{"exercise_price":11.5,"exercise_date":"2016-08-19","expiration_date":"2021-07-20","underlying":"Common Stock","underlying_shares":931},"source":{"system":"sec-edgar","filing":"0001144204-16-128062","document":"v450551_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420416128062/v450551_4.xml","form_type":"4"}},{"id":4580161,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Additional Merger Warrants (right to buy)","published_at":"2016-10-14T01:00:14.000Z","date":"2016-10-11","kind":"other","acquired":false,"shares":49604,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The warrants will expire five years after the date on which they first became exercisable, at 5:00 p.m., New York time, or earlier upon redemption or liquidation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."}],"balance_after":0,"derivative":{"exercise_price":11.5,"exercise_date":"2016-08-19","expiration_date":"2021-07-20","underlying":"Common Stock","underlying_shares":49604},"source":{"system":"sec-edgar","filing":"0001144204-16-128062","document":"v450551_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420416128062/v450551_4.xml","form_type":"4"}},{"id":4580160,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Merger Warrants (right to buy)","published_at":"2016-10-14T01:00:14.000Z","date":"2016-10-11","kind":"other","acquired":true,"shares":620,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Following LMHC's dissolution and liquidation, these securities, previously held directly by LMHC, were distributed pro rata to LMHC's equity holders."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Following LMHC's dissolution and liquidation, these securities, previously held directly by LMHC, were distributed pro rata to LMHC's equity holders."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The warrants will expire seven years after the date on which they first became exercisable, at 5:00 p.m., New York time, or earlier upon liquidation."}],"balance_after":620,"derivative":{"exercise_price":12.5,"exercise_date":"2016-08-19","expiration_date":"2023-07-20","underlying":"Common Stock","underlying_shares":620},"source":{"system":"sec-edgar","filing":"0001144204-16-128062","document":"v450551_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420416128062/v450551_4.xml","form_type":"4"}},{"id":4580159,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Merger Warrants (right to buy)","published_at":"2016-10-14T01:00:14.000Z","date":"2016-10-11","kind":"other","acquired":false,"shares":33069,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The warrants will expire seven years after the date on which they first became exercisable, at 5:00 p.m., New York time, or earlier upon liquidation."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."}],"balance_after":0,"derivative":{"exercise_price":12.5,"exercise_date":"2016-08-19","expiration_date":"2023-07-20","underlying":"Common Stock","underlying_shares":33069},"source":{"system":"sec-edgar","filing":"0001144204-16-128062","document":"v450551_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420416128062/v450551_4.xml","form_type":"4"}},{"id":4580158,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Common Stock","published_at":"2016-10-14T01:00:14.000Z","date":"2016-10-11","kind":"other","acquired":true,"shares":2045,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Following LMHC's dissolution and liquidation, these securities, previously held directly by LMHC, were distributed pro rata to LMHC's equity holders."},{"field":"shares","element":"transactionShares","label":"F4","text":"938 of such shares are subject to certain transfer restrictions pursuant to a lockup agreement between the Reporting Person and the Issuer."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Following LMHC's dissolution and liquidation, these securities, previously held directly by LMHC, were distributed pro rata to LMHC's equity holders."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"938 of such shares are subject to certain transfer restrictions pursuant to a lockup agreement between the Reporting Person and the Issuer."}],"balance_after":2145,"source":{"system":"sec-edgar","filing":"0001144204-16-128062","document":"v450551_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420416128062/v450551_4.xml","form_type":"4"}},{"id":4580157,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":153224,"kind":"person","name":"Thorne Kristopher L.","position":1,"cik":"0001679795","reported_name":"Thorne Kristopher L.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operations Officer"}}],"security":"Common Stock","published_at":"2016-10-14T01:00:14.000Z","date":"2016-10-11","kind":"other","acquired":false,"shares":108989,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."},{"field":"shares","element":"transactionShares","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"These shares are held directly by the Reporting Person and were not held by LMHC."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"These reported securities were held directly by Limbach Management Holding Company, LLC (\"LMHC\"). The Reporting person held an equity interest in LMHC until LMHC's dissolution and liquidation. The Reporting person disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. These reported dispositions reflect the liquidation of LMHC's holdings following its dissolution."}],"balance_after":100,"source":{"system":"sec-edgar","filing":"0001144204-16-128062","document":"v450551_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000114420416128062/v450551_4.xml","form_type":"4"}}]}