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The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":73656,"source":{"system":"sec-edgar","filing":"0001628280-26-043880","document":"wk-form4_1781727048.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026043880/wk-form4_1781727048.xml","form_type":"4"}},{"id":734051,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-06-17T20:10:51.000Z","date":"2026-06-15","kind":"sale","planned":true,"acquired":false,"shares":1862,"price":79.6708,"value":148347.0296,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2026 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $79.05 to $80.04. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":75677,"source":{"system":"sec-edgar","filing":"0001628280-26-043880","document":"wk-form4_1781727048.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026043880/wk-form4_1781727048.xml","form_type":"4"}},{"id":734050,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-06-17T20:10:51.000Z","date":"2026-06-15","kind":"sale","planned":true,"acquired":false,"shares":788,"price":78.4619,"value":61827.9772,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2026 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $78.03 to $79.02. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":77539,"source":{"system":"sec-edgar","filing":"0001628280-26-043880","document":"wk-form4_1781727048.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026043880/wk-form4_1781727048.xml","form_type":"4"}},{"id":834962,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-03-18T21:50:07.000Z","date":"2026-03-16","kind":"gift","planned":true,"acquired":false,"shares":700,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F6","text":"Represents a bona fide gift of shares of Limbach Holdings, Inc's. common stock for which no payment or consideration was received by the reporting person."}],"balance_after":78327,"source":{"system":"sec-edgar","filing":"0001628280-26-019541","document":"wk-form4_1773870604.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026019541/wk-form4_1773870604.xml","form_type":"4"}},{"id":834961,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-03-18T21:50:07.000Z","date":"2026-03-16","kind":"sale","planned":true,"acquired":false,"shares":500,"price":81.6551,"value":40827.55,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $81.30 to $81.72. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":79027,"source":{"system":"sec-edgar","filing":"0001628280-26-019541","document":"wk-form4_1773870604.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026019541/wk-form4_1773870604.xml","form_type":"4"}},{"id":834960,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-03-18T21:50:07.000Z","date":"2026-03-16","kind":"sale","planned":true,"acquired":false,"shares":300,"price":80.5501,"value":24165.03,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $80.03 to $80.96. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":79527,"source":{"system":"sec-edgar","filing":"0001628280-26-019541","document":"wk-form4_1773870604.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026019541/wk-form4_1773870604.xml","form_type":"4"}},{"id":834959,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-03-18T21:50:07.000Z","date":"2026-03-16","kind":"sale","planned":true,"acquired":false,"shares":709,"price":79.5203,"value":56379.8927,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $79.00 to $79.87. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":79827,"source":{"system":"sec-edgar","filing":"0001628280-26-019541","document":"wk-form4_1773870604.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026019541/wk-form4_1773870604.xml","form_type":"4"}},{"id":834958,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-03-18T21:50:07.000Z","date":"2026-03-16","kind":"sale","planned":true,"acquired":false,"shares":491,"price":78.6122,"value":38598.5902,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $78.00 to $78.98. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."}],"balance_after":80536,"source":{"system":"sec-edgar","filing":"0001628280-26-019541","document":"wk-form4_1773870604.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026019541/wk-form4_1773870604.xml","form_type":"4"}},{"id":861429,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-03-04T22:14:27.000Z","date":"2026-03-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":12359,"price":89.17,"value":1102052.03,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Reflects the withholding of 12,359 shares by the Company to satisfy tax withholding requirements. 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(the \"Company\") common stock issued to the reporting person on March 2, 2026 upon vesting of 19,165 performance-based restricted stock units, based on the achievement of certain pre-established performance goals at above-target levels for the performance period commencing on January 1, 2023 through December 31, 2025. 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The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2027, January 1, 2028 and January 1, 2029, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"This award of RSUs was granted on January 1, 2026. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2027, January 1, 2028 and January 1, 2029, 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. 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The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2026, January 1, 2027 and January 1, 2028, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"This award of RSUs was granted on January 1, 2025. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2026, January 1, 2027 and January 1, 2028, subject to continued employment through the applicable vesting date. 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Such transactions were exempt from Section 16(b) pursuant to Rule 16b-3."}],"balance_after":64639,"source":{"system":"sec-edgar","filing":"0001628280-26-000543","document":"wk-form4_1767649794.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026000543/wk-form4_1767649794.xml","form_type":"4"}},{"id":951372,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2026-01-05T21:49:57.000Z","date":"2026-01-01","kind":"exercise","planned":false,"acquired":true,"shares":487,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":66395,"source":{"system":"sec-edgar","filing":"0001628280-26-000543","document":"wk-form4_1767649794.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026000543/wk-form4_1767649794.xml","form_type":"4"}},{"id":951371,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2026-01-05T21:49:57.000Z","date":"2026-01-01","kind":"exercise","planned":false,"acquired":true,"shares":929,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":65908,"source":{"system":"sec-edgar","filing":"0001628280-26-000543","document":"wk-form4_1767649794.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828026000543/wk-form4_1767649794.xml","form_type":"4"}},{"id":967458,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-12-17T01:21:00.000Z","date":"2025-12-15","kind":"sale","planned":true,"acquired":false,"shares":100,"price":80.05,"value":8005.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":64979,"source":{"system":"sec-edgar","filing":"0001628280-25-057476","document":"wk-form4_1765934456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025057476/wk-form4_1765934456.xml","form_type":"4"}},{"id":967457,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-12-17T01:21:00.000Z","date":"2025-12-15","kind":"sale","planned":true,"acquired":false,"shares":500,"price":78.9871,"value":39493.55,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from $78.68 to $79.14. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":65079,"source":{"system":"sec-edgar","filing":"0001628280-25-057476","document":"wk-form4_1765934456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025057476/wk-form4_1765934456.xml","form_type":"4"}},{"id":967456,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-12-17T01:21:00.000Z","date":"2025-12-15","kind":"sale","planned":true,"acquired":false,"shares":500,"price":77.8588,"value":38929.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $77.67 to $78.16. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":65579,"source":{"system":"sec-edgar","filing":"0001628280-25-057476","document":"wk-form4_1765934456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025057476/wk-form4_1765934456.xml","form_type":"4"}},{"id":967455,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-12-17T01:21:00.000Z","date":"2025-12-15","kind":"sale","planned":true,"acquired":false,"shares":900,"price":77.2478,"value":69523.02,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $76.65 to $77.65. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":66079,"source":{"system":"sec-edgar","filing":"0001628280-25-057476","document":"wk-form4_1765934456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025057476/wk-form4_1765934456.xml","form_type":"4"}},{"id":967454,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-12-17T01:21:00.000Z","date":"2025-12-12","kind":"gift","planned":true,"acquired":false,"shares":410,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a bona fide gift of shares of Limbach Holdings, Inc's. common stock for which no payment or consideration was received by the reporting person."}],"balance_after":66979,"source":{"system":"sec-edgar","filing":"0001628280-25-057476","document":"wk-form4_1765934456.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025057476/wk-form4_1765934456.xml","form_type":"4"}},{"id":1037730,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-09-17T20:14:45.000Z","date":"2025-09-16","kind":"gift","planned":true,"acquired":false,"shares":488,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents a bona fide gift of shares of Limbach Holdings, Inc's. common stock for which no payment or consideration was received by the reporting person."}],"balance_after":67389,"source":{"system":"sec-edgar","filing":"0001965562-25-000003","document":"wk-form4_1758140081.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000196556225000003/wk-form4_1758140081.xml","form_type":"4"}},{"id":1037729,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-09-17T20:14:45.000Z","date":"2025-09-15","kind":"sale","planned":true,"acquired":false,"shares":2000,"price":106.09,"value":212180.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."}],"balance_after":67877,"source":{"system":"sec-edgar","filing":"0001965562-25-000003","document":"wk-form4_1758140081.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000196556225000003/wk-form4_1758140081.xml","form_type":"4"}},{"id":1107942,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-06-17T20:58:50.000Z","date":"2025-06-13","kind":"sale","planned":true,"acquired":false,"shares":300,"price":139.2133,"value":41763.99,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from $139.11 to $139.27. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":69877,"source":{"system":"sec-edgar","filing":"0001628280-25-031889","document":"wk-form4_1750193923.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025031889/wk-form4_1750193923.xml","form_type":"4"}},{"id":1107941,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-06-17T20:58:50.000Z","date":"2025-06-13","kind":"sale","planned":true,"acquired":false,"shares":420,"price":138.22,"value":58052.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $138.07 to $138.49. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":70177,"source":{"system":"sec-edgar","filing":"0001628280-25-031889","document":"wk-form4_1750193923.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025031889/wk-form4_1750193923.xml","form_type":"4"}},{"id":1107940,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-06-17T20:58:50.000Z","date":"2025-06-13","kind":"sale","planned":true,"acquired":false,"shares":880,"price":137.4257,"value":120934.616,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $136.96 to $137.95. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":70597,"source":{"system":"sec-edgar","filing":"0001628280-25-031889","document":"wk-form4_1750193923.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025031889/wk-form4_1750193923.xml","form_type":"4"}},{"id":1107939,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-06-17T20:58:50.000Z","date":"2025-06-13","kind":"sale","planned":true,"acquired":false,"shares":300,"price":135.9567,"value":40787.01,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $135.61 to $136.43. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":71477,"source":{"system":"sec-edgar","filing":"0001628280-25-031889","document":"wk-form4_1750193923.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025031889/wk-form4_1750193923.xml","form_type":"4"}},{"id":1107938,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-06-17T20:58:50.000Z","date":"2025-06-13","kind":"sale","planned":true,"acquired":false,"shares":100,"price":134.48,"value":13448.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction is part of a 10b5-1 plan adopted on March 14, 2025 by the reporting person."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":71777,"source":{"system":"sec-edgar","filing":"0001628280-25-031889","document":"wk-form4_1750193923.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025031889/wk-form4_1750193923.xml","form_type":"4"}},{"id":1209569,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-03-12T21:13:44.000Z","date":"2025-03-10","kind":"tax_withholding","planned":false,"acquired":false,"shares":9252,"price":68.92,"value":637647.84,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Reflects the withholding of 9,252 shares by the Company to satisfy tax withholding requirements. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3."}],"balance_after":71877,"source":{"system":"sec-edgar","filing":"0001628280-25-012403","document":"wk-form4_1741814018.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025012403/wk-form4_1741814018.xml","form_type":"4"}},{"id":1209568,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-03-12T21:13:44.000Z","date":"2025-03-10","kind":"grant","planned":false,"acquired":true,"shares":20710,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 20,710 shares of Limbach Holdings, Inc. (the \"Company\") common stock issued to the reporting person on March 10, 2025 upon vesting of 13,807 performance-based restricted stock units, based on the achievement of certain pre-established performance goals at above-target levels for the performance period commencing on January 1, 2022 through December 31, 2024. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount of common stock also contains awards of restricted stock units (each, an \"RSU\") granted on January 4, 2023 and January 17, 2023. Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":81129,"source":{"system":"sec-edgar","filing":"0001628280-25-012403","document":"wk-form4_1741814018.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025012403/wk-form4_1741814018.xml","form_type":"4"}},{"id":1314670,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Restricted Stock Units","published_at":"2025-01-03T22:07:52.000Z","date":"2025-01-01","kind":"grant","planned":false,"acquired":true,"shares":1461,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"This award of RSUs was granted on January 1, 2025. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2026, January 1, 2027 and January 1, 2028, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"This award of RSUs was granted on January 1, 2025. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2026, January 1, 2027 and January 1, 2028, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":3319,"derivative":{"underlying":"Common Stock","underlying_shares":1461},"source":{"system":"sec-edgar","filing":"0001628280-25-000369","document":"wk-form4_1735942065.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025000369/wk-form4_1735942065.xml","form_type":"4"}},{"id":1314669,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Restricted Stock Units","published_at":"2025-01-03T22:07:52.000Z","date":"2025-01-01","kind":"exercise","planned":false,"acquired":false,"shares":928,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"This award of RSUs was granted on January 1, 2024. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2025, January 1, 2026 and January 1, 2027, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"This award of RSUs was granted on January 1, 2024. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2025, January 1, 2026 and January 1, 2027, 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. 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Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3."}],"balance_after":60419,"source":{"system":"sec-edgar","filing":"0001628280-25-000369","document":"wk-form4_1735942065.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025000369/wk-form4_1735942065.xml","form_type":"4"}},{"id":1314667,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Regional President"}}],"security":"Common Stock","published_at":"2025-01-03T22:07:52.000Z","date":"2025-01-01","kind":"exercise","planned":false,"acquired":true,"shares":928,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":62477,"source":{"system":"sec-edgar","filing":"0001628280-25-000369","document":"wk-form4_1735942065.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828025000369/wk-form4_1735942065.xml","form_type":"4"}},{"id":1574711,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of Limbach"}}],"security":"Common Stock","published_at":"2024-03-15T21:20:44.000Z","date":"2024-03-13","kind":"tax_withholding","planned":false,"acquired":false,"shares":9349,"price":49.76,"value":465206.24,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Reflects the withholding of 9,349 shares by the Company to satisfy tax withholding requirements. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3."}],"balance_after":61549,"source":{"system":"sec-edgar","filing":"0001628280-24-011533","document":"wk-form4_1710537630.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828024011533/wk-form4_1710537630.xml","form_type":"4"}},{"id":1574710,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of Limbach"}}],"security":"Common Stock","published_at":"2024-03-15T21:20:44.000Z","date":"2024-03-13","kind":"grant","planned":false,"acquired":true,"shares":21491,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents 21,491 shares of Limbach Holdings, Inc. (the \"Company\") common stock issued to the reporting person on March 13, 2024 upon vesting of 16,000 performance-based restricted stock units, based on the achievement of certain pre-established performance goals at above-target levels for the performance period commencing on January 1, 2021 through December 31, 2023. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The amount of common stock contains awards of restricted stock units (each, an \"RSU\") granted on January 1, 2022, January 4, 2023 and January 17, 2023, respectively. Each RSU represents a contingent right to receive one share of Limbach Holdings, Inc. (the \"Company\") common stock, exempt under Rule 16b-3(d)(1) and (3). Each award is subject to service-based vesting conditions. The awards vest, in the aggregate, in the amount of 5,495 shares on January 1, 2025 and 3,194 shares on January 1, 2026. The amount of common stock does 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 achievements of the applicable performance goals. Any such performance-based RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":70898,"source":{"system":"sec-edgar","filing":"0001628280-24-011533","document":"wk-form4_1710537630.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828024011533/wk-form4_1710537630.xml","form_type":"4"}},{"id":1692379,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of Limbach"}}],"security":"Restricted Stock Units","published_at":"2024-01-03T23:28:51.000Z","date":"2024-01-01","kind":"grant","planned":false,"acquired":true,"shares":2786,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each RSU represents a contingent right to receive one share of the Company's common stock, exempt under Rule 16b-3(d)(1) and (3)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"This award of RSUs was granted on January 1, 2024. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2025, January 1, 2026 and January 1, 2027, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"This award of RSUs was granted on January 1, 2024. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2025, January 1, 2026 and January 1, 2027, subject to continued employment through the applicable vesting date. The amounts reported above (related to this grant) do not include performance-based RSUs, if any, that may be earned by the reporting person but for which the Compensation Committee has not yet determined the achievement of the applicable performance goals. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination."}],"balance_after":2786,"derivative":{"underlying":"Common Stock","underlying_shares":2786},"source":{"system":"sec-edgar","filing":"0001628280-24-000317","document":"wk-form4_1704324515.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828024000317/wk-form4_1704324515.xml","form_type":"4"}},{"id":1692378,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of Limbach"}}],"security":"Common Stock","published_at":"2024-01-03T23:28:51.000Z","date":"2024-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":3159,"price":45.47,"value":143639.73,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Reflects the withholding of 3,159 shares by the Company to satisfy tax withholding requirements. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3."}],"balance_after":49407,"source":{"system":"sec-edgar","filing":"0001628280-24-000317","document":"wk-form4_1704324515.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828024000317/wk-form4_1704324515.xml","form_type":"4"}},{"id":1891493,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of Limbach"}}],"security":"$12.50 Merger Warrants","published_at":"2023-05-16T20:13:02.000Z","date":"2023-04-24","kind":"other","planned":false,"acquired":false,"shares":311,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":12.5,"exercise_date":"2017-07-20","expiration_date":"2023-07-20","underlying":"Common Stock","underlying_shares":311},"source":{"system":"sec-edgar","filing":"0001628280-23-018415","document":"wf-form4_168426797025580.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828023018415/wf-form4_168426797025580.xml","form_type":"4"}},{"id":1891492,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of Limbach"}}],"security":"Common Stock","published_at":"2023-05-16T20:13:02.000Z","date":"2023-04-24","kind":"sale","planned":false,"acquired":false,"shares":222,"price":17.519,"value":3889.218,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On April 24, 2023, the Reporting Person exercised a warrant to purchase 311 shares of the Limbach Holdings, Inc. (the \"Company\") Common Stock for $12.50 per share. The Reporting Person paid the exercise price on a cashless basis, resulting in the issuer's withholding of 222 of the warrant shares to pay the exercise price and issuing to the Reporting Person the remaining 89 shares."}],"balance_after":52566,"source":{"system":"sec-edgar","filing":"0001628280-23-018415","document":"wf-form4_168426797025580.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828023018415/wf-form4_168426797025580.xml","form_type":"4"}},{"id":1891491,"issuer":{"id":5430,"kind":"organization","name":"Limbach Holdings, Inc.","symbol":"LMB"},"owners":[{"id":37251,"kind":"person","name":"Sharp Jay","position":1,"cik":"0001965562","reported_name":"Sharp Jay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of Limbach"}}],"security":"Common Stock","published_at":"2023-05-16T20:13:02.000Z","date":"2023-04-24","kind":"other","planned":false,"acquired":true,"shares":311,"price":12.5,"value":3887.5,"ownership":{"direct":true},"balance_after":52788,"source":{"system":"sec-edgar","filing":"0001628280-23-018415","document":"wf-form4_168426797025580.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1606163/000162828023018415/wf-form4_168426797025580.xml","form_type":"4"}}]}