# EDGAR Filing Document

**Accession Number:** 0001606163
**File Stem:** 0001628280-26-000541
**Filing Date:** 2026-1
**Character Count:** 10811
**Document Hash:** e487b86a6fc675c322f478b3c700b626
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-000541.hdr.sgml**: 20260105

**ACCESSION NUMBER**: 0001628280-26-000541

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260101

**FILED AS OF DATE**: 20260105

**DATE AS OF CHANGE**: 20260105

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** McCann Michael M
- **CENTRAL INDEX KEY:** 0001760470

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36541
- **FILM NUMBER:** 26507292

**MAIL ADDRESS:**
- **STREET 1:** 797 COMMONWEALTH DRIVE
- **CITY:** WARRENDALE
- **STATE:** PA
- **ZIP:** 15086
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Limbach Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001606163
- **STANDARD INDUSTRIAL CLASSIFICATION:** CONSTRUCTION SPECIAL TRADE CONTRACTORS [1700]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 797 COMMONWEALTH DRIVE
- **CITY:** WARRENDALE
- **STATE:** PA
- **ZIP:** 15086
- **BUSINESS PHONE:** (412) 359-2100

**MAIL ADDRESS:**
- **STREET 1:** 797 COMMONWEALTH DRIVE
- **CITY:** WARRENDALE
- **STATE:** PA
- **ZIP:** 15086

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** 1347 Capital Corp
- **DATE OF NAME CHANGE:** 20140422

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>McCann Michael M<br><sub>(Last) (First) (Middle)</sub><br>797 COMMONWEALTH DRIVE<br><sub>(Street)</sub><br>WARRENDALE, PA 15086<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-01-01 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Executive Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Limbach Holdings, Inc. [ LMB ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-01-01 |  | M |  | 4699 | A | $0 | 133304 | D |  |
| Common Stock | 2026-01-01 |  | M |  | 1080 | A | $0 | 134384 | D |  |
| Common Stock | 2026-01-01 |  | M |  | 2627 | A | $0 | 137011 | D |  |
| Common Stock | 2026-01-01 |  | M |  | 1499 | A | $0 | 138510 | D |  |
| Common Stock | 2026-01-01 |  | F |  | 2538<sup>(1)</sup> | D | $77.85 | 135972 | D |  |
| Common Stock |  |  |  |  |  |  |  | 44233<sup>(2)</sup> | I | The McCann Family Revocable Living Trust |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units | <sup>(3)</sup> | 2026-01-01 |  | M |  |  | 4699 | <sup>(4)</sup> | <sup>(4)</sup> | Common Stock | 4699 | $0 | 10833 | D |  |
| Restricted Stock Units | <sup>(3)</sup> | 2026-01-01 |  | M |  |  | 1080 | <sup>(5)</sup> | <sup>(5)</sup> | Common Stock | 1080 | $0 | 9753 | D |  |
| Restricted Stock Units | <sup>(3)</sup> | 2026-01-01 |  | M |  |  | 2627 | <sup>(6)</sup> | <sup>(6)</sup> | Common Stock | 2627 | $0 | 7126 | D |  |
| Restricted Stock Units | <sup>(3)</sup> | 2026-01-01 |  | M |  |  | 1499 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 1499 | $0 | 5627 | D |  |
| Restricted Stock Units | <sup>(3)</sup> | 2026-01-01 |  | A |  | 6260 |  | <sup>(8)</sup> | <sup>(8)</sup> | Common Stock | 6260 | $0 | 11887 | D |  |

---

### Footnotes:

(1) Reflects the withholding of shares by Limbach Holdings, Inc. (the "Company") to satisfy tax withholding requirements. Such transaction was exempt from Section 16(b) pursuant to Rule 16b-3.

(2) Shares held by The McCann Family Revocable Living Trust. The Reporting Person and his spouse are trustees of The McCann Family Revocable Living Trust. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report will not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

(3) 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).

(4) This award of RSUs was granted on January 4, 2023. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2024, January 1, 2025 and January 1, 2026, 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.

(5) This award of RSUs was granted on January 17, 2023. The award is subject to service-based vesting conditions and vests in equal annual installments on each of January 1, 2024, January 1, 2025 and January 1, 2026, 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.

(6) 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.

(7) 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.

(8) 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. Any such RSU's will be reported on a Form 4 within two business days of the date of such determination.

**Signature:** /s/ Jeremiah G. Garvey, Attorney-in-Fact for Michael M. McCann  
**Date:** 2026-01-05

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**