Limbach Holdings, Inc.

For the period ended Sep 30, 2026. Filed Nov 3, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 3, 2026

LMB$57.07+6.8%Stored close · as of Nov 9, 2026

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Contents

Item 6. Exhibits

Exhibit	Description
3.1	Conformed Second Amended and Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange Commission on June 23, 2023).
3.2	Certificate of Designation of Class A Preferred Stock (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange Commission on July 26, 2016).
3.3	Certificate of Correction to Certificate of Designation of Class A Preferred Stock (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange Commission on August 24, 2016).
3.4	Amended and Restated Bylaws (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange Commission on April 17, 2023).
10.1	Credit Agreement, dated as of September 9, 2026, by and among Limbach Facility Services LLC, Limbach Holdings, Inc., Limbach Holdings LLC, the other guarantors party thereto, the lenders party thereto, and PNC Bank, National Association, as administrative agent, swingline loan lender and issuing lender and PNC Capital Markets LLC, Flagstar Bank, National Association, and BMO Bank National Association, as joint lead arrangers and joint bookrunners, and First National Bank of Pennsylvania as documentation agent (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K (File No. 001-36541) filed with the U.S. Securities and Exchange. Commission on September 9, 2026).
31.1*	Certification of the Chief Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of the Chief Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*	Certification of the Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*	Certification of the Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document.
101.SCH	XBRL Taxonomy Extension Schema Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Document.
104	Cover Page Interactive Data File (formatted as inline XBRL with applicable taxonomy extension information contained in Exhibits 101)

*Filed herewith

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.