10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒       QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2022

OR

☐       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number 001-36541

LIMBACH HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

Delaware, USA	46-5399422
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
797 Commonwealth Drive, Warrendale, Pennsylvania	15086
(Address of principal executive offices)	(Zip Code)

1-412-359-2100

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
Common Stock, par value $0.0001 per share	LMB	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes  ☒    No   ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☒     No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☐	Accelerated filer	☒
Non-accelerated filer	☐	Smaller reporting company	☒
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐   No  ☒

As of August 8, 2022, there were 10,447,660 shares of the registrant’s common stock, $0.0001 par value per share, outstanding.

LIMBACH HOLDINGS, INC.

TABLE OF CONTENTS

Part I.
Item 1.	Financial Statements (Unaudited)	1
	Condensed Consolidated Balance Sheets as of June 30, 2022 and December 31, 2021	1
	Condensed Consolidated Statements of Operations for the Three and Six Months Ended June 30, 2022 and 2021	2
	Condensed Consolidated Statement of Stockholders’ Equity for the Three and Six Months Ended June 30, 2022 and 2021	3
	Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2022 and 2021	4
	Notes to Condensed Consolidated Financial Statements	5
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	40
Item 4.	Controls and Procedures	40
Part II.
Item 1.	Legal Proceedings	42
Item 1A.	Risk Factors	42
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	42
Item 3.	Defaults Upon Senior Securities	42
Item 4.	Mine Safety Disclosures	42
Item 5.	Other Information	42
Item 6.	Exhibits	43
Signature		44

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

LIMBACH HOLDINGS, INC.

Condensed Consolidated Balance Sheets (Unaudited)

(in thousands, except share and per share data)	June 30, 2022		December 31, 2021
ASSETS
Current assets:
Cash and cash equivalents	$	19,630	$	14,476
Restricted cash	113		113
Accounts receivable (net of allowance for doubtful accounts of $316 and $263 as of June 30, 2022 and December 31, 2021, respectively)	101,018		89,327
Contract assets	74,959		83,863
Income tax receivable	676		114
Other current assets	5,534		5,013
Total current assets	201,930		192,906
Property and equipment, net	20,419		21,621
Intangible assets, net	16,109		16,907
Goodwill	11,370		11,370
Operating lease right-of-use assets	16,644		20,119
Deferred tax asset	4,342		4,330
Other assets	231		259
Total assets	$	271,045	$	267,512
LIABILITIES
Current liabilities:
Current portion of long-term debt	$	9,893	$	9,879
Current operating lease liabilities	3,415		4,366
Accounts payable, including retainage	63,205		63,840
Contract liabilities	39,835		26,712
Accrued income taxes	—		501
Accrued expenses and other current liabilities	25,773		24,444
Total current liabilities	142,121		129,742
Long-term debt	24,699		29,816
Long-term operating lease liabilities	14,086		16,576
Other long-term liabilities	1,827		3,540
Total liabilities	182,733		179,674
Commitments and contingencies (Note 13)
STOCKHOLDERS’ EQUITY
Common stock, $0.0001 par value; 100,000,000 shares authorized, 10,423,068 issued and outstanding as of June 30, 2022 and 10,304,242 at December 31, 2021	1		1
Additional paid-in capital	86,128		85,004
Retained Earnings	2,183		2,833
Total stockholders’ equity	88,312		87,838
Total liabilities and stockholders’ equity	$	271,045	$	267,512

The accompanying notes are an integral part of these condensed consolidated financial statements

1

LIMBACH HOLDINGS, INC.

Condensed Consolidated Statements of Operations (Unaudited)

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands, except share and per share data)	2022		2021		2022		2021
Revenue	$	116,120	$	121,019	$	230,942	$	234,363
Cost of revenue	94,800		102,329		191,282		198,444
Gross profit	21,320		18,690		39,660		35,919
Operating expenses:
Selling, general and administrative	18,690		17,232		37,424		34,377
Change in fair value of contingent consideration	765		—		765		—
Amortization of intangibles	399		104		798		208
Total operating expenses	19,854		17,336		38,987		34,585
Operating income	1,466		1,354		673		1,334
Other (expenses) income:
Interest expense, net	(478)		(452)		(964)		(1,716)
Gain on disposition of property and equipment	147		94		111		8
Loss on early termination of operating lease	(32)		—		(849)		—
Loss on early debt extinguishment	—		—		—		(1,961)
Gain on change in fair value of warrant liability	—		—		—		14
Total other expenses	(363)		(358)		(1,702)		(3,655)
Income (loss) before income taxes	1,103		996		(1,029)		(2,321)
Income tax provision (benefit)	237		264		(379)		(771)
Net income (loss)	$	866	$	732	$	(650)	$	(1,550)
Earnings Per Share (“EPS”)
Earnings (loss) per common share:
Basic	$	0.08	$	0.07	$	(0.06)	$	(0.16)
Diluted	$	0.08	$	0.07	$	(0.06)	$	(0.16)
Weighted average number of shares outstanding:
Basic	10,423,068		10,251,696		10,421,886		9,737,801
Diluted	10,567,304		10,469,028		10,421,886		9,737,801

The accompanying notes are an integral part of these condensed consolidated financial statements

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LIMBACH HOLDINGS, INC.

Condensed Consolidated Statements of Stockholders’ Equity (Unaudited)

	Common Stock
(in thousands, except share amounts)	Number of shares outstanding	Par value amount		Additional paid-in capital		Retained earnings		Stockholders’ equity
Balance at December 31, 2021	10,304,242	$	1	$	85,004	$	2,833	$	87,838
Stock-based compensation	—	—		599		—		599
Shares issued related to vested restricted stock units	105,928	—		—		—		—
Tax withholding related to vested restricted stock units	—	—		(148)		—		(148)
Shares issued related to employee stock purchase plan	12,898	—		98		—		98
Net loss	—	—		—		(1,516)		(1,516)
Balance at March 31, 2022	10,423,068	1		85,553		1,317		86,871
Stock-based compensation	—	—		575		—		575
Net income	—	—		—		866		866
Balance at June 30, 2022	10,423,068	$	1	$	86,128	$	2,183	$	88,312

	Common Stock
(in thousands, except share amounts)	Number of shares outstanding	Par value amount		Additional paid-in capital		Accumulated deficit		Stockholders’ equity
Balance at December 31, 2020	7,926,137	$	1	$	57,612	$	(3,881)	$	53,732
Stock-based compensation	—	—		677		—		677
Shares issued related to vested restricted stock units	89,446	—		—		—		—
Tax withholding related to vested restricted stock units	—	—		(183)		—		(183)
Shares issued related to employee stock purchase plan	8,928	—		92		—		92
Shares issued related to the exercise of warrants	172,869	—		1,989		—		1,989
Shares issued related to sale of common stock	2,051,025	—		22,773		—		22,773
Net loss	—	—		—		(2,282)		(2,282)
Balance at March 31, 2021	10,248,405	1		82,960		(6,163)		76,798
Stock-based compensation	—	—		636		—		636
Shares issued related to vested restricted stock units	3,291	—		—		—		—
Tax withholding related to vested restricted stock units	—	—		(7)		—		(7)
Net income	—	—		—		732		732
Balance at June 30, 2021	10,251,696	$	1	$	83,589	$	(5,431)	$	78,159

The accompanying notes are an integral part of these condensed consolidated financial statements

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LIMBACH HOLDINGS, INC.

Condensed Consolidated Statements of Cash Flows (Unaudited)

	Six Months Ended June 30,
(in thousands)	2022		2021
Cash flows from operating activities:
Net loss	$	(650)	$	(1,550)
Adjustments to reconcile net loss to cash provided by (used in) operating activities:
Depreciation and amortization	4,148		2,964
Provision for doubtful accounts	104		70
Stock-based compensation expense	1,174		1,313
Noncash operating lease expense	2,232		2,091
Amortization of debt issuance costs	65		220
Deferred income tax provision	(12)		(306)
Gain on sale of property and equipment	(111)		(8)
Loss on early termination of operating lease	849		—
Change in fair value of contingent consideration	765		—
Loss on early debt extinguishment	—		1,961
Gain on change in fair value of warrant liability	—		(14)
Changes in operating assets and liabilities:
Accounts receivable	(11,796)		(8,918)
Contract assets	8,904		(3,717)
Other current assets	(520)		(1,306)
Accounts payable, including retainage	(635)		190
Prepaid income taxes	(562)		(891)
Accrued taxes payable	(501)		(1,671)
Contract liabilities	13,123		(7,469)
Operating lease liabilities	(2,165)		(2,004)
Accrued expenses and other current liabilities	(1,861)		(5,450)
Other long-term liabilities	69		(114)
Net cash provided by (used in) operating activities	12,620		(24,609)
Cash flows from investing activities:
Proceeds from sale of property and equipment	189		361
Purchase of property and equipment	(473)		(501)
Net cash used in investing activities	(284)		(140)
Cash flows from financing activities:
Proceeds from Wintrust Term Loan (as defined in Note 6)	—		30,000
Payments on Wintrust and A&R Wintrust Term Loans	(9,149)		(2,000)
Proceeds from A&R Wintrust Revolving Loan (as defined in Note 6)	15,194		—
Payments on A&R Wintrust Revolving Loan	(11,694)		—
Payments on 2019 Refinancing Term Loan (as defined in Note 6)	—		(39,000)
Prepayment penalty and other costs associated with early debt extinguishment	—		(1,376)
Proceeds from the sale of common stock	—		22,773
Proceeds from the exercise of warrants	—		1,989
Payments on finance leases	(1,358)		(1,318)
Payments of debt issuance costs	(25)		(593)
Taxes paid related to net-share settlement of equity awards	(363)		(401)
Proceeds from contributions to Employee Stock Purchase Plan	213		221
Net cash (used in) provided by financing activities	(7,182)		10,295
Increase (decrease) in cash, cash equivalents and restricted cash	5,154		(14,454)
Cash, cash equivalents and restricted cash, beginning of period	14,589		42,260
Cash, cash equivalents and restricted cash, end of period	$	19,743	$	27,806
Supplemental disclosures of cash flow information
Noncash investing and financing transactions:
Right of use assets obtained in exchange for new operating lease liabilities	$	—	$	156
Right of use assets obtained in exchange for new finance lease liabilities	1,968		336
Right of use assets disposed or adjusted modifying operating lease liabilities	(1,276)		36
Right of use assets disposed or adjusted modifying finance lease liabilities	(77)		—
Interest paid	911		1,741
Cash paid for income taxes	$	696	$	2,096

    

The accompanying notes are an integral part of these condensed consolidated financial statements

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LIMBACH HOLDINGS, INC.

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 1 – Business and Organization

Limbach Holdings, Inc. (the “Company,” “we” or “us”), a Delaware corporation headquartered in Warrendale, Pennsylvania, was formed on July 20, 2016 as a result of a business combination with Limbach Holdings LLC (“LHLLC”). The Company is an integrated building systems solutions firm whose expertise is in the design, modular prefabrication, installation, management and maintenance of heating, ventilation, air-conditioning (“HVAC”), mechanical, electrical, plumbing and controls systems. The Company provides comprehensive facility services consisting of mechanical construction, full HVAC service and maintenance, energy audits and retrofits, engineering and design build services, constructability evaluation, equipment and materials selection, offsite/prefabrication construction, and the complete range of sustainable building solutions. The Company's customers operate in diverse industries including, but not limited to, healthcare, life sciences, data centers, industrial and light manufacturing, entertainment, education and government. The Company operates primarily in the Northeast, Mid-Atlantic, Southeast, Midwest, and Southwestern regions of the United States.

The Company operates in two segments, (i) General Contractor Relationships (“GCR”), in which the Company generally manages new construction or renovation projects that involve primarily HVAC, plumbing, or electrical services awarded to the Company by general contractors or construction managers, and (ii) Owner Direct Relationships (“ODR”), in which the Company provides maintenance or service primarily on HVAC, plumbing or electrical systems, building controls and specialty contracting projects direct to, or assigned by, building owners or property managers. This work is primarily performed under fixed price, modified fixed price, and time and material contracts over periods of typically less than two years.

Note 2 – Significant Accounting Policies

Basis of Presentation

References in these financial statements to the Company refer collectively to the accounts of Limbach Holdings, Inc. and its wholly-owned subsidiaries, including LHLLC, Limbach Facility Services LLC (“LFS”), Limbach Company LLC, Limbach Company LP, Harper Limbach LLC, Harper Limbach Construction LLC, Limbach Facility & Project Solutions LLC, Jake Marshall, LLC (“JMLLC”) and Coating Solutions, LLC (“CSLLC”) for all periods presented, unless otherwise indicated. All intercompany balances and transactions have been eliminated.

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) for interim financial information and with the requirements of Form 10-Q and Rule 8-03 of Regulation S-X for smaller reporting companies. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. Readers of this report should refer to the consolidated financial statements and the notes thereto included in the Company's most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on March 16, 2022.

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements for assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, the reported amounts of revenue and expenses during the reported period, and the accompanying notes. Management believes that its most significant estimates and assumptions have been based on reasonable and supportable assumptions and the resulting estimates are reasonable for use in the preparation of the condensed consolidated financial statements. The Company’s significant estimates include estimates associated with revenue recognition on construction contracts, costs incurred through each balance sheet date, intangibles, property and equipment, fair value accounting for acquisitions, insurance reserves, fair value of contingent consideration arrangements and contingencies. If the underlying estimates and assumptions upon which the condensed consolidated financial statements are based change in the future, actual amounts may differ from those included in the accompanying condensed consolidated financial statements.

Unaudited Interim Financial Information

The accompanying interim Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Stockholders’ Equity and Condensed Consolidated Statements of Cash Flows for the periods presented are unaudited. Also, within the notes to the condensed consolidated financial statements, the Company has

5

included unaudited information for these interim periods. These unaudited interim condensed consolidated financial statements have been prepared in accordance with GAAP. In the Company's opinion, the accompanying unaudited condensed consolidated financial statements contain all normal and recurring adjustments necessary for a fair statement of the Company’s financial position as of June 30, 2022, its results of operations and equity for the three and six months ended June 30, 2022 and 2021 and its cash flows for the six months ended June 30, 2022 and 2021. The results for the three and six months ended June 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022.

The Condensed Consolidated Balance Sheet as of December 31, 2021 was derived from the Company's audited financial statements included in its Annual Report on Form 10-K filed with the SEC on March 16, 2022, but is presented as condensed and does not contain all of the footnote disclosures from the annual financial statements.

Recently Adopted Accounting Standards

In November 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which creates an exception to the general recognition and measurement principle for contract assets and contract liabilities from contracts with customers acquired in a business combination. Under this exception, an acquirer applies ASC 606, Revenue from Contracts with Customers, to recognize and measure contract assets and contract liabilities on the acquisition date. ASC 805 generally requires the acquirer in a business combination to recognize and measure the assets it acquires and the liabilities it assumes at fair value on the acquisition date. The changes are effective for annual periods beginning after December 15, 2022. The Company early adopted ASU 2021-08 in December 2021. The contract assets and contract liabilities associated with the Jake Marshall Transaction have been valued in accordance with this standard.

Recent Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, which introduced an expected credit loss methodology for the measurement and recognition of credit losses on most financial instruments, including trade receivables and off-balance sheet credit exposure. Under this guidance, an entity is required to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. This ASU also requires disclosure of information regarding how a company developed its allowance, including changes in the factors that influenced management’s estimate of expected credit losses and the reasons for those changes. The guidance is effective for smaller reporting companies on January 1, 2023 with early adoption permitted. The adoption of this standard will be through a cumulative-effect adjustment to retained earnings as of the effective date. Based on its historical experience, the Company does not expect that this pronouncement will have a significant impact in its condensed consolidated financial statements or on the estimate of the allowance for doubtful accounts.

The FASB has issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting in March 2020. This new guidance provides optional expedients for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform, on financial reporting. The risk of termination of the London Interbank Offered Rate (LIBOR), has caused regulators to undertake reference rate reform initiatives to identify alternative reference rates that are more observable or transaction based that are less susceptible to manipulation. ASU 2020-04 is effective between March 12, 2020 and December 31, 2022.

In addition, in January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope. The amendments in this update refine the scope for certain optional expedients and exceptions for contract modifications and hedge accounting to apply to derivative contracts and certain hedging relationships affected by the discounting transition. An entity may elect to apply the amendments in this update from the beginning of an interim period beginning as of March 12, 2020, through December 31, 2022. The Company is currently evaluating the impact of adopting the reference rate reform guidance (both ASU 2020-04 and ASU 2021-01) on its condensed consolidated financial statements. As discussed in Note 6, the A&R Credit Agreement removed LIBOR as a benchmark rate and now utilizes SOFR (as defined in the A&R Credit Agreement) as its replacement.

In August 2020, the FASB issued ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity, which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity and amends the scope guidance for contracts in an entity's own equity. The ASU addresses how convertible instruments are accounted for in the calculation of diluted earnings per share by using the if-converted method. The guidance is effective for all entities for fiscal years beginning after March 31, 2024, albeit early adoption is permitted no earlier than fiscal years beginning after December 15, 2020. Management is currently assessing the impact of this pronouncement on its condensed consolidated financial statements.

6

Note 3 – Acquisitions

Jake Marshall Transaction

On December 2, 2021 (the “Effective Date”), the Company and LFS entered into a Membership Interest Purchase Agreement (the “Purchase Agreement”) with JMLLC, CSLLC (together with JMLLC, the “Acquired Companies” and each an “Acquired Company”) and the owners of the Acquired Companies (collectively, the “Sellers”), pursuant to which LFS purchased all of the outstanding membership interests in the Acquired Companies from the Sellers (the transactions contemplated by the Purchase Agreement collectively being the “Jake Marshall Transaction”). The Jake Marshall Transaction closed on the Effective Date. As a result of the Jake Marshall Transaction, each of the Acquired Companies became wholly-owned indirect subsidiaries of the Company. The acquisition expands the Company’s market share within its existing product and service lines.

Total consideration paid by the Company for the Jake Marshall Transaction at closing was $21.3 million (the “Closing Purchase Price”), consisting of cash paid to the Sellers, net of adjustments for working capital. Of the consideration paid to the Sellers, $1.0 million is being held in escrow for indemnification purposes. The purchase price is subject to customary post-closing adjustments. In addition, the Sellers may receive up to an aggregate of $6.0 million in cash, consisting of two tranches of $3.0 million, as defined in the Purchase Agreement, if the gross profit of the Acquired Companies equals or exceeds $10.0 million in (i) the approximately 13 month period from closing through December 31, 2022 (the “2022 Earnout Period”) or (ii) fiscal year 2023 (the “2023 Earnout Period”), respectively (collectively, the “Earnout Payments”). To the extent, however, that the gross profit of the Acquired Companies is less than $10.0 million, but exceeds $8.0 million, during any of the 2022 Earnout Period or 2023 Earnout Period, the $3.0 million amount will be prorated for such period.

Allocation of Purchase Price. The Jake Marshall Transaction was accounted for as a business combination using the acquisition method. The following table summarizes the final purchase price and estimated fair values of assets acquired and liabilities assumed as of the Effective Date, with any excess of purchase price over estimated fair value of the identified net assets acquired recorded as goodwill. As a result of the acquisition, the Company recognized $5.2 million of goodwill, all of which was allocated to the ODR segment and fully deductible for tax purposes. Such goodwill primarily related to anticipated future earnings. The following table summarizes the final allocation of the fair value of the assets and liabilities of the Jake Marshall Transaction as of the Effective Date by the Company.

(in thousands)	Purchase Price Allocation
Consideration:
Cash	$	21,313
Earnout provision	3,089
Total Consideration	24,402
Fair value of assets acquired:
Cash and cash equivalents	2,336
Accounts receivable	7,165
Contract assets	1,711
Other current assets	164
Property and equipment	5,762
Intangible assets	5,710
Amount attributable to assets acquired	22,848
Fair value of liabilities assumed:
Accounts payable, including retainage	2,655
Accrued expenses and other current liabilities	570
Contract liabilities	462
Amount attributable to liabilities assumed	3,687
Goodwill	$	5,241

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Note 4 – Revenue from Contracts with Customers

The Company generates revenue principally from fixed-price construction contracts to deliver HVAC, plumbing, and electrical construction services to its customers. The duration of its contracts generally ranges from six months to two years. Revenue from fixed price contracts is recognized on the cost-to-cost method, measured by the relationship of total cost incurred to total estimated contract costs. Revenue from time and materials contracts is recognized as services are performed. The Company believes that its extensive experience in HVAC, plumbing, and electrical projects, and its internal cost review procedures during the bidding process, enable it to reasonably estimate costs and mitigate the risk of cost overruns on fixed price contracts.

The Company generally invoices customers on a monthly basis, based on a schedule of values that breaks down the contract amount into discrete billing items. Costs and estimated earnings in excess of billings on uncompleted contracts are recorded as a contract asset until billable under the contract terms. Billings in excess of costs and estimated earnings on uncompleted contracts are recorded as a contract liability until the related revenue is recognizable. The Company classifies contract assets and liabilities that may be settled beyond one year from the balance sheet date as current, consistent with the length of time of the Company’s project operating cycle.

Contract assets

Contract assets include amounts due under retainage provisions and costs and estimated earnings in excess of billings. The components of the contract asset balances as of the respective dates were as follows:

(in thousands)	June 30, 2022		December 31, 2021		Change
Contract assets
Costs in excess of billings and estimated earnings	$	44,366	$	47,447	$	(3,081)
Retainage receivable	30,593		36,416		(5,823)
Total contract assets	$	74,959	$	83,863	$	(8,904)

Retainage receivable represents amounts invoiced to customers where payments have been partially withheld, typically 10%, pending the completion of certain milestones, satisfaction of other contractual conditions or the completion of the project. Retainage agreements vary from project to project and balances could be outstanding for several months or years depending on a number of circumstances such as contract-specific terms, project performance and other variables that may arise as the Company makes progress towards completion.

Contract assets represent the excess of contract costs and profits (or contract revenue) over the amount of contract billings to date and are classified as a current asset. Contract assets result when either: (1) the appropriate contract revenue amount has been recognized over time in accordance with ASC Topic 606, but a portion of the revenue recorded cannot be currently billed due to the billing terms defined in the contract, or (2) costs are incurred related to certain claims and unapproved change orders. Claims occur when there is a dispute regarding both a change in the scope of work and the price associated with that change. Unapproved change orders occur when a change in the scope of work results in additional work being performed before the parties have agreed on the corresponding change in the contract price. The Company routinely estimates recovery related to claims and unapproved change orders as a form of variable consideration at the most likely amount it expects to receive and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Claims and unapproved change orders are billable upon the agreement and resolution between the contractual parties and after the execution of contractual amendments. Increases in claims and unapproved change orders typically result from costs being incurred against existing or new positions; decreases normally result from resolutions and subsequent billings.

The current estimated net realizable value on such items as recorded in contract assets and contract liabilities in the condensed consolidated balance sheets was $38.6 million and $38.1 million as of June 30, 2022 and December 31, 2021, respectively. The Company currently anticipates that the majority of such amounts will be approved or executed within one year. The resolution of those claims and unapproved change orders that may require litigation or other forms of dispute resolution proceedings may delay the timing of billing beyond one year.

Contract liabilities

Contract liabilities include billings in excess of contract costs and provisions for losses. The components of the contract liability balances as of the respective dates were as follows:

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(in thousands)	June 30, 2022		December 31, 2021		Change
Contract liabilities
Billings in excess of costs and estimated earnings	$	39,401	$	26,293	$	13,108
Provisions for losses	434		419		15
Total contract liabilities	$	39,835	$	26,712	$	13,123

Billings in excess of costs represent the excess of contract billings to date over the amount of contract costs and profits (or contract revenue) recognized to date. The balance may fluctuate depending on the timing of contract billings and the recognition of contract revenue.

Provisions for losses are recognized in the condensed consolidated statements of operations at the uncompleted performance obligation level for the amount of total estimated losses in the period that evidence indicates that the estimated total cost of a performance obligation exceeds its estimated total revenue.

The net underbilling position for contracts in process consisted of the following:

(in thousands)	June 30, 2022		December 31, 2021
Revenue earned on uncompleted contracts	$	744,522	$	758,450
Less: Billings to date	(739,557)		(737,296)
Net underbilling	$	4,965	$	21,154
(in thousands)	June 30, 2022		December 31, 2021
Costs in excess of billings and estimated earnings	$	44,366	$	47,447
Billings in excess of costs and estimated earnings	(39,401)		(26,293)
Net underbilling	$	4,965	$	21,154

Revisions in Contract Estimates

The Company recorded revisions in its contract estimates for certain GCR and ODR projects. During the three and six months ended June 30, 2022, the Company recorded a material gross profit write-up on one GCR project for a total of $1.3 million that had a net gross profit impact of $0.5 million or more for both periods. During the three months ended June 30, 2021, the Company recorded a material gross profit write-down on one GCR project for a total of $1.0 million that had a net gross profit impact of $0.5 million or more. During the six months ended June 30, 2021, the Company recorded material gross profit write-downs on two GCR projects for a total of $1.5 million.

Remaining Performance Obligations

Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and exclude unexercised contract options. The Company’s remaining performance obligations include projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions.

As of June 30, 2022, the aggregate amount of the transaction prices allocated to the remaining performance obligations of the Company's GCR and ODR segment contracts were $308.8 million and $102.1 million, respectively. The Company currently estimates that 50% and 66% of its GCR and ODR remaining performance obligations as of June 30, 2022, respectively, will be recognized as revenue during the remainder of 2022, with the substantial majority of remaining performance obligations to be recognized within 24 months, although the timing of the Company's performance is not always under its control.

Additionally, the difference between remaining performance obligations and backlog is due to the exclusion of a portion of the Company’s ODR agreements under certain contract types from the Company’s remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer.

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Note 5 – Goodwill and Intangibles

Goodwill

Goodwill was $11.4 million as of June 30, 2022 and December 31, 2021 and is entirely associated with the Company's ODR segment. The Company tests its goodwill and indefinite-lived intangible assets allocated to its reporting units for impairment annually on October 1, or more frequently if events or circumstances indicate that it is more likely than not that the fair value of its reporting units and indefinite-lived intangible asset are less than their carrying amount. The Company has the option to assess goodwill for possible impairment by performing a qualitative analysis to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. A quantitative assessment is performed if the qualitative assessments results in a more-likely-than-not determination or if a qualitative assessment is not performed.

The Company did not recognize any impairment charges on its goodwill or intangible assets for the three and six months ended June 30, 2022 or June 30, 2021.

Intangible Assets

Intangible assets are comprised of the following:     

(in thousands)	Gross carrying amount		Accumulated amortization		Net intangible assets, excluding goodwill
June 30, 2022
Amortized intangible assets:
Customer relationships – GCR – Jake Marshall	$	570	$	(47)	$	523
Customer relationships – ODR – Jake Marshall	3,050		(235)		2,815
Customer relationships – ODR – Limbach	4,710		(3,634)		1,076
Favorable leasehold interests – Limbach	190		(90)		100
Backlog – GCR – Jake Marshall	260		(96)		164
Backlog – ODR – Jake Marshall	680		(250)		430
Trade name – Jake Marshall	1,150		(109)		1,041
Total amortized intangible assets	10,610		(4,461)		6,149
Unamortized intangible assets:
Trade name – Limbach(1)	9,960		—		9,960
Total unamortized intangible assets	9,960		—		9,960
Total amortized and unamortized assets, excluding goodwill	$	20,570	$	(4,461)	$	16,109

(1)    The Company has determined that its trade name has an indefinite useful life. The Limbach trade name has been in existence since the Company’s founding in 1901 and therefore is an established brand within the industry.

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(in thousands)	Gross carrying amount		Accumulated amortization		Net intangible assets, excluding goodwill
December 31, 2021
Amortized intangible assets:
Customer relationships – GCR – Jake Marshall	$	570	$	(6)	$	564
Customer relationships – ODR – Jake Marshall	3,050		(35)		3,015
Customer relationships – ODR – Limbach	4,710		(3,475)		1,235
Favorable leasehold interests – Limbach	190		(82)		108
Backlog – GCR – Jake Marshall	260		(14)		246
Backlog – ODR – Jake Marshall	680		(36)		644
Trade name – Jake Marshall	1,150		(15)		1,135
Total amortized intangible assets	10,610		(3,663)		6,947
Unamortized intangible assets:
Trade name – Limbach	9,960		—		9,960
Total unamortized intangible assets	9,960		—		9,960
Total amortized and unamortized assets, excluding goodwill	$	20,570	$	(3,663)	$	16,907

Total amortization expense for the Company's definite-lived intangible assets was $0.4 million and $0.8 million for the three and six months ended June 30, 2022, respectively, and $0.1 million and $0.2 million for the three and six months ended June 30, 2021, respectively.

Note 6 – Debt

Long-term debt consists of the following obligations as of:

(in thousands)	June 30, 2022		December 31, 2021
A&R Wintrust Term Loan - term loan payable in quarterly installments of principal, (commencing in December 2021) plus interest through February 2026	25,733		34,881
A&R Wintrust Revolving Loan	3,500		—
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 3.96% to 6.45% through 2026	5,665		5,132
Total debt	34,898		40,013
Less - Current portion of long-term debt	(9,893)		(9,879)
Less - Unamortized discount and debt issuance costs	(306)		(318)
Long-term debt	$	24,699	$	29,816

On February 24, 2021 (the “2021 Refinancing Date”), the Company refinanced its 2019 Refinancing Term Loan (as defined below) and 2019 Revolving Credit Facility (as defined below) with proceeds from the issuance of the Wintrust Term Loan (as defined below) (the “2021 Refinancing”). As a result of the 2021 Refinancing, the Company prepaid all principal, interest, fees and other obligations outstanding under the 2019 Refinancing Agreements (as defined below) and terminated its 2019 Refinancing Term Loan, 2019 Refinancing Revolving Credit Facility and the CB Warrants (as defined below). In addition, on the 2021 Refinancing Date, the Company recognized a loss on the early extinguishment of debt of $2.0 million, which consisted of the write-off of $2.6 million of unamortized discount and financing costs, the reversal of the $2.0 million CB warrants (defined below) liability and the prepayment penalty and other extinguishment costs of $1.4 million.

2019 Refinancing Agreement - 2019 Term Loans

On April 12, 2019 (the “2019 Refinancing Closing Date”), LFS entered into a financing agreement (the “2019 Refinancing Agreement”) with the lenders thereto and Cortland Capital Market Services LLC, as collateral agent and administrative agent and CB Agent Services LLC (“CB”), as origination agent. The 2019 Refinancing Agreement consisted of (i) a $40.0 million term loan (the “2019 Refinancing Term Loan”) and (ii) a new $25.0 million multi-draw delayed draw term loan (the “2019 Delayed Draw Term Loan” and, collectively with the 2019 Refinancing Term Loan, the “2019 Term Loans”). On November

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14, 2019, the Company entered into an amendment to the 2019 Refinancing Agreement which, among other things, amended the interest rate and certain covenants in the 2019 Refinancing Agreement.

Prior to its refinancing in February 2021, the 2019 Refinancing Agreement would have matured on April 12, 2022. Required amortization was $1.0 million per quarter and commenced with the fiscal quarter ending September 30, 2020. There was an unused line fee of 2.0% per annum on the undrawn portion of the 2019 Delayed Draw Term Loan, and there was a make-whole premium on prepayments made prior to the 19-month anniversary of the 2019 Refinancing Closing Date. This make-whole provision guaranteed that the Company would pay no less than 18 months’ applicable interest to the lenders under the 2019 Refinancing Agreement.

The interest rate on borrowings under the 2019 Refinancing Agreement was, at the option of LFS and its subsidiaries, either LIBOR (with a 2.00% floor) plus 11.00% or a base rate (with a 3.00% minimum) plus 10.00%. At the 2021 Refinancing Date, the interest rate in effect on the 2019 Refinancing Term Loan was 13.00%.

2019 Refinancing Agreement - CB Warrants

In connection with the 2019 Refinancing Agreement, on the 2019 Refinancing Closing Date, the Company issued to CB and the other lenders under the 2019 Refinancing Agreement warrants (the “CB Warrants”) to purchase up to a maximum of 263,314 shares of the Company's common stock at an exercise price of $7.63 per share subject to certain adjustments, including for stock dividends, stock splits or reclassifications. The actual number of shares of common stock into which the CB Warrants were exercisable at any given time were equal to: (i) the product of (x) the number of shares equal to 2% of the Company’s issued and outstanding shares of common stock on the 2019 Refinancing Closing Date on a fully diluted basis and (y) the percentage of the total 2019 Delayed Draw Term Loan made as of the exercise date, minus (ii) the number of shares previously issued under the CB Warrants. As of the 2019 Refinancing Closing Date through the 2021 Refinancing Date, no amounts had been drawn on the 2019 Delayed Draw Term Loan, so no portion of the CB Warrants were exercisable. The CB Warrants were to be exercised for cash or on a “cashless basis,” subject to certain adjustments, at any time after the 2019 Refinancing Closing Date until the expiration of such warrant at 5:00 p.m., New York time, on the earlier of (i) the five (5) year anniversary of the 2019 Refinancing Closing Date, or (ii) the liquidation of the Company.  

For the period from January 1, 2021 through the 2021 Refinancing Date, the Company recorded interest expense for the amortization of the CB Warrants liability and embedded derivative debt discounts of $0.1 million and recorded an additional $0.1 million of interest expense for the amortization of the debt issuance costs.

2019 ABL Credit Agreement

On the 2019 Refinancing Closing Date, LFS also entered into a financing agreement with the lenders thereto and Citizens Bank, N.A., as collateral agent, administrative agent and origination agent (the “2019 ABL Credit Agreement” and, together with the 2019 Refinancing Agreement, the “Refinancing Agreements”). The 2019 ABL Credit Agreement consisted of a $15.0 million revolving credit facility (the “2019 Revolving Credit Facility”). Proceeds of the 2019 Revolving Credit Facility were to be used for general corporate purposes. On the 2019 Refinancing Closing Date, the Company entered into an amendment to the 2019 ABL Credit Agreement (as amended, 2019 ABL Credit Amendment Number One and Waiver), which amended certain provisions under the 2019 ABL Credit Agreement.

The interest rate on borrowings under the 2019 ABL Credit Agreement was, at the option of LFS and its subsidiaries, either LIBOR (with a 2.0% floor) plus an applicable margin ranging from 3.00% to 3.50% or a base rate (with a 3.0% minimum) plus an applicable margin ranging from 2.00% to 2.50%. At the 2021 Refinancing Date, the interest rate in effect on the 2019 ABL Credit Agreement was 5.25%.

As of the 2021 Refinancing Date, the Company had irrevocable letters of credit in the amount of $3.4 million with its lender to secure obligations under its self-insurance program. Prior to its refinancing in February 2021, the 2019 ABL Agreement would have matured in April 2022.

Wintrust Term and Revolving Loans

On the 2021 Refinancing Date, LFS, LHLLC and the direct and indirect subsidiaries of LFS from time to time included as parties to the agreement (the “Wintrust Guarantors”) entered into a credit agreement (the “Wintrust Credit Agreement”) by and among the LFS, LHLLC, Wintrust Guarantors, the lenders party thereto from time to time, Wheaton Bank & Trust Company, N.A., a subsidiary of Wintrust Financial Corporation (collectively, “Wintrust”), as administrative agent and L/C issuer, Bank of the West as documentation agent, M&T Bank as syndication agent, and Wintrust as lead arranger and sole book runner.

In accordance with the terms of the Wintrust Credit Agreement, Lenders provided to LFS (i) a $30.0 million senior secured term loan (the “Wintrust Term Loan”); and (ii) a $25.0 million senior secured revolving credit facility with a $5.0 million

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sublimit for the issuance of letters of credit (the “Wintrust Revolving Loan” and, together with the Wintrust Term Loan, the “Wintrust Loans”). Proceeds of the Wintrust Loans were used to refinance certain existing indebtedness, finance working capital and other general corporate purposes and fund certain fees and expenses associated with the closing of the Wintrust Loans.

The Wintrust Revolving Loan initially bore interest, at LFS’s option, at either LIBOR (with a 0.25% floor) plus 3.5% or a base rate (with a 3.0% floor) plus 0.50%, subject to a 50 basis point step-down based on the ratio between the senior debt of the Company and its subsidiaries to the EBITDA (earnings before interest, income taxes, depreciation and amortization) of the LFS and its subsidiaries for the most recently ended four fiscal quarters. The Wintrust Term Loan initially bore interest, at LFS’s option, at either LIBOR (with a 0.25% floor) plus 4.0% or a base rate (with a 3.0% floor) plus 1.00%, subject to a 50 (for LIBOR) or 75 (for base rate) basis point step-down based on the Senior Leverage Ratio.

LFS was initially required to make principal payments on the Wintrust Term Loan in $0.5 million installments on the last business day of each month commencing on March 31, 2021 with a final payment of all principal and interest not sooner paid on the Wintrust Term Loan due and payable on February 24, 2026.

In conjunction with the Jake Marshall Transaction, the Company entered into an amendment to the Wintrust Credit Agreement (the “A&R Wintrust Credit Agreement”). In accordance with the terms of the A&R Credit Agreement, Lenders provided to LFS (i) a $35.5 million senior secured term loan (the “A&R Wintrust Term Loan”); and (ii) a $25 million senior secured revolving credit facility with a $5 million sublimit for the issuance of letters of credit (the “A&R Wintrust Revolving Loan” and, together with the Term Loan, the “A&R Wintrust Loans”). The overall Wintrust Term Loan commitment under the A&R Wintrust Credit Agreement was recast at $35.5 million in connection with the A&R Credit Agreement. A portion of the A&R Wintrust Term Loan commitment was used to fund the closing purchase price of the Jake Marshall Transaction. The A&R Credit Agreement was also amended to: (i) permit the Company to undertake the Jake Marshall Transaction (ii) make certain adjustments to the covenants under the A&R Credit Agreement (which were largely done to make certain adjustments for the Jake Marshall Transaction) (iii) allow for the Earnout Payments under the Jake Marshall Transaction and (iv) make other corresponding changes to the A&R Credit Agreement.

The A&R Wintrust Revolving Loan bears interest, at LFS’s option, at either Term SOFR (as defined in the A&R Credit Agreement) (with a 0.15% floor) plus 3.60%, 3.76% or 3.92% for a tenor of one month, three months or six months, respectively, or a base rate (as set forth in the A&R Credit Agreement) (with a 3.0% floor) plus 0.50%, subject to a 50 basis point step-down based on the ratio between the senior debt of the Company and its subsidiaries to the EBITDA of LFS and its subsidiaries for the most recently ended four fiscal quarters (the “Senior Leverage Ratio”). The A&R Wintrust Term Loan bears interest, at LFS’s option, at either Term SOFR (with a 0.15% floor) plus 4.10%, 4.26% or 4.42% for a tenor of one month, three months or six months, respectively, or a base rate (with a 3.0% floor) plus 1.00%, subject to a 50 (for Term SOFR) or 75 (for base rate) basis point step-down based on the Senior Leverage Ratio. At June 30, 2022 and 2021, the interest rate in effect on the Wintrust Term Loan was 5.75% and 4.25%, respectively. For the three and six months ended June 30, 2022, the Company incurred interest on the A&R Wintrust Term Loan at a weighted average annual interest rate of 4.90% and 4.57%, respectively.

The A&R Wintrust Term Loan is payable through a combination of (i) monthly installments of approximately $0.6 million due on the last business day of each month commencing on December 31, 2021, (ii) annual Excess Cash Flow payments as defined in the A&R Wintrust Credit Agreement, which are due 120 days after the last day of the Company's fiscal year and (iii) Net Claim Proceeds from Legacy Claims as defined in the A&R Wintrust Credit Agreement. Subject to defaults and remedies under the A&R Credit Agreement, the final payment of all principal and interest not sooner paid on the A&R Wintrust Term Loan is due and payable on February 24, 2026. Subject to defaults and remedies under the A&R Credit Agreement, the A&R Wintrust Revolving Loan matures and becomes due and payable by LFS on February 24, 2026. During the second quarter of 2022, the Company made certain Excess Cash Flow and Net Claim Proceeds payments of $3.3 million and $2.1 million, respectively, which concurrently reduced the outstanding A&R Wintrust Term Loan balance.

The A&R Wintrust Loans are secured by (i) a valid, perfected and enforceable lien of the administrative agent on the ownership interests held by each of LFS and Wintrust Guarantors in their respective subsidiaries; and (ii) a valid, perfected and enforceable lien of the administrative agent on each of LFS and Wintrust Guarantors’ personal property, fixtures and real estate, subject to certain exceptions and limitations. Additionally, the re-payment of the A&R Wintrust Loans shall be jointly and severally guaranteed by each Wintrust Guarantor.

The A&R Credit Agreement contains representations and warranties, covenants and events of default that are customary for facilities of this type, as more particularly described in the A&R Credit Agreement. The A&R Wintrust Loans also contain three financial maintenance covenants, including (i) a requirement to have as of the last day of each quarter for the senior leverage ratio of the Company and its subsidiaries not to exceed an amount beginning at 2.00 to 1.00, (ii) a fixed charge coverage ratio of not less than 1.20 to 1.00 as of the last day of each fiscal quarter commencing with the fiscal quarter ending December 31,

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2021, and (iii) no unfinanced capital expenditures, except for unfinanced capital expenditures in the ordinary course of business not exceeding in the aggregate $4.0 million during any fiscal year; and no default or event of default (as defined by the agreement) has occurred and is continuing, 50% of any portion of this annual limit, if not expended in the fiscal year for which it is permitted, may be carried over for expenditure in the next following fiscal year as stipulated by the agreement. LFS and its affiliates maintain various commercial and service relationships with certain members of the syndicate and their affiliates in the ordinary course of business.

On May 5, 2022, the Company, LFS and LHLLC entered into a first amendment and waiver to the A&R Wintrust Credit Agreement (the “First Amendment to the A&R Wintrust Credit Agreement”) with the lenders party thereto and Wintrust, as administrative agent. The First Amendment to the A&R Wintrust Credit Agreement modifies certain definitions within the A&R Wintrust Credit Agreement, and make other corresponding changes, including: (i) the definition of EBITDA to allow for the recognition of certain restructuring charges and lease breakage costs not previously specified, (ii) the definition of Excess Cash Flow to exclude the aggregate amount of the Earnout Payments paid in cash, (iii) the definition of Total Funded Debt to exclude certain capitalized lease obligations for real estate based on the approval of each lender and (iv) the definition of Disposition to include a clause for the sale and leaseback of certain real property based on the approval of each lender.

As of June 30, 2022, the Company had $3.5 million of borrowings outstanding under the A&R Wintrust Revolving Loan. The Company did not have any borrowings outstanding under the A&R Wintrust Revolving Loan as of December 31, 2021. During the three and six months ended June 30, 2022, the maximum outstanding borrowings under the A&R Wintrust Revolving Loan at any time was $3.5 million and $9.4 million, respectively, and the average daily balance was approximately $0.1 million for both periods. For the three and six months ended June 30, 2022, the Company incurred interest on the A&R Wintrust Revolving Loan at a weighted average annual interest rate of 4.91% and 4.37%, respectively. For the three and six months ended June 30, 2022, commitment fees of approximately $13 thousand and $27 thousand, respectively, were paid to maintain credit availability under the A&R Wintrust Revolving Loan. During the three months ended June 30, 2021 and for the period from the 2021 Refinancing Date through June 30 2021, the Company did not have any borrowings on the Wintrust Revolving Loan. For the three months ended June 30, 2021 and for the period from the 2021 Refinancing Date through June 30, 2021, commitment fees of approximately $14 thousand and $20 thousand, respectively, were paid to maintain credit availability under the Wintrust Revolving Loan.

At June 30, 2022, the Company had irrevocable letters of credit in the amount of $3.3 million with the lenders under the A&R Wintrust Credit Agreement to secure obligations under its self-insurance program.

The following is a summary of the applicable margin and commitment fees payable on the available A&R Wintrust Term Loan and A&R Wintrust Revolving Loan credit commitment:

Level	Senior Leverage Ratio	Additional Margin for Prime Rate loans		Additional Margin for Prime Revolving loans		Additional Margin for Eurodollar Term loans
I	Greater than 1.00 to 1.00	1.00	%	0.50	%	0.25	%
II	Less than or equal to 1.00 to 1.00	0.25	%	—	%	0.25	%

As of June 30, 2022, the Company was in compliance with all financial maintenance covenants as required by the A&R Wintrust Loans.

Note 7 – Equity

The Company’s second amended and restated certificate of incorporation currently authorizes the issuance of 100,000,000 shares of common stock, par value $0.0001, and 1,000,000 shares of preferred stock, par value $0.0001.

Warrants

In conjunction with the Company's initial public offering, the Company issued Public Warrants, Private Warrants and $15 Exercise Price Sponsor Warrants. The Company issued certain Merger Warrants and Additional Merger Warrants in conjunction with the Company's business combination with LHLLC in July 2016 (the “Business Combination”). On July 20, 2021, the Public Warrants, Private Warrants, and Additional Merger Warrants expired by their terms.

The following table summarizes the underlying shares of common stock with respect to outstanding warrants:

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	June 30, 2022	December 31, 2021
$15 Exercise Price Sponsor Warrants(1)(2)	600,000	600,000
Merger Warrants(3)(4)	629,643	629,643
Total	1,229,643	1,229,643

(1)    Exercisable for one share of common stock at an exercise price of $15.00 per share (“$15 Exercise Price Sponsor Warrants”).

(2)    Issued under a warrant agreement dated July 15, 2014, between Continental Stock Transfer and Trust Company, as warrant agent, and the Company.

(3)    Exercisable for one share of common stock at an exercise price of $12.50 per share (“Merger Warrants”).

(4)    Issued to the sellers of LHLLC.

Incentive Plan

Upon the consummation of the Company's Business Combination, the Company adopted an omnibus incentive plan (the “Omnibus Incentive Plan”) for which all future equity awards will be granted thereunder.

On March 9, 2021, the Board of Directors approved certain amendments to the Company's Omnibus Incentive Plan (the “2021 Amended and Restated Omnibus Incentive Plan”) to increase the number of shares of the Company's common stock that may be issued pursuant to awards by 600,000, for a total of 2,250,000 shares, and extended the term of the plan so that it will expire on the tenth anniversary of the date the stockholders approve the 2021 Amended and Restated Omnibus Incentive Plan. The amendments were approved by the Company's stockholders at the Annual Meeting held on June 16, 2021.

On March 25, 2022, the Board of Directors approved certain additional amendments to the Company's Omnibus Incentive Plan (the “2022 Amended and Restated Omnibus Incentive Plan”) to increase the number of shares of the Company's common stock that may be issued pursuant to awards by 350,000, for a total of 2,600,000 shares, and extended the term of the plan so that it will expire on the tenth anniversary of the date the stockholders approve the 2022 Amended and Restated Omnibus Incentive Plan. The amendments were approved by the Company's stockholders at the Annual Meeting held on June 22, 2022.

See Note 14 for a discussion of the Company's management incentive plans for restricted stock units (“RSUs”) granted, vested, forfeited and remaining unvested.

Employee Stock Purchase Plan

Upon approval of the Company's stockholders on May 30, 2019, the Company adopted the Limbach Holdings, Inc. 2019 Employee Stock Purchase Plan (the “ESPP”). On January 1, 2020, the ESPP went into effect. The ESPP enables eligible employees, as defined by the ESPP, the right to purchase the Company's common stock through payroll deductions during consecutive subscription periods at a purchase price of 85% of the fair market value of a common share at the end of each offering period. Annual purchases by participants are limited to the number of whole shares that can be purchased by an amount equal to ten percent of the participant's compensation or $5,000, whichever is less. Each offering period of the ESPP lasts six months, commencing on January 1 and July 1 of each year. The amounts collected from participants during a subscription period are used on the exercise date to purchase full shares of common stock. Participants may withdraw from an offering before the exercise date and obtain a refund of amounts withheld through payroll deductions. Compensation cost, representing the 15% discount applied to the fair market value of common stock, is recognized on a straight-line basis over the six-month vesting period during which employees perform related services. Under the ESPP, 500,000 shares are authorized to be issued. In January 2022, the Company issued 12,898 shares of its common stock to participants in the ESPP who contributed to the plan during the offering period ending December 31, 2021. In January 2021, the Company issued a total of 8,928 shares of its common stock to participants in the ESPP who contributed to the plan during the offering period ending December 31, 2020. As of June 30, 2022, 431,209 shares remain available for future issuance under the ESPP.

2021 Public Offering

On February 10, 2021 the Company entered into an underwriting agreement (“Underwriting Agreement”) with Lake Street Capital Markets, LLC (“Underwriter”) relating to an underwritten public offering (the “2021 Public Offering”). On February 12, 2021, the Company sold to the Underwriter 1,783,500 shares of its Common Stock. The Underwriting Agreement provided for purchase and sale of the Shares by the company to the Underwriter at a price of $11.28 per share. The price to the public in the 2021 Public Offering was $12.00 per share. In addition, under the terms of the Underwriting Agreement, the Company granted the Underwriter a 30-day option to purchase up to an additional 267,525 shares of Common Stock to cover over-allotments, if any, on the same terms and conditions. The net proceeds to the Company from the 2021 Public Offering after deducting the underwriting discounts and commissions were approximately $19.8 million. On February 18, 2021, the Company received approximately $3.0 million of net proceeds for the sale of 267,525 shares in connection with the exercise of the over-allotment option.

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Note 8 – Fair Value Measurements

The Company measures the fair value of financial assets and liabilities in accordance with ASC Topic 820 – Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value and requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

•Level 1 — inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date;

•Level 2 — inputs other than quoted prices included in Level 1 that are observable for the asset or liability either directly or indirectly such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities; and

•Level 3 — unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The Company believes that the carrying amounts of its financial instruments, including cash and cash equivalents, trade accounts receivable and accounts payable, consist primarily of instruments without extended maturities, which approximate fair value primarily due to their short-term maturities and low risk of counterparty default. The Company also believes that the carrying values of the A&R Wintrust Term Loan and the A&R Wintrust Revolving Loan approximate their respective fair values due to the variable rates on such debt. As of June 30, 2022, the Company determined that the fair value of the A&R Wintrust Term Loan was $25.7 million and the A&R Wintrust Revolving Loan was $3.5 million. Such fair value was determined using discounted estimated future cash flows using level 3 inputs.

As a part of the total consideration for the Jake Marshall Transaction, the Company initially recognized $3.1 million in contingent consideration, of which the entire balance was included in other long-term liabilities in the Company’s condensed consolidated balance sheet on the Effective Date. The fair value of contingent Earnout Payments is based on generating growth rates on the projected gross margins of the Acquired Entities and calculating the associated contingent payments based on achieving the earnout targets, which are reassessed each reporting period. Based on the Company’s ongoing assessment of the fair value of contingent earnout liability, the Company recorded a net increase in the estimated fair value of such liabilities of $0.8 million for the three months ended June 30, 2022, which was presented in change in fair value of contingent consideration in the Company's condensed consolidated statements of operations. The Company has assessed the maximum estimated exposure to the contingent earnout liabilities to be approximately $3.9 million at June 30, 2022, of which approximately $2.5 million was included in accrued expenses and other current liabilities and approximately $1.4 million was included in other long-term liabilities.

The Company determines the fair value of the Earnout Payments by utilizing the Monte Carlo Simulation method, which represents a Level 3 measurement. The Monte Carlo Simulation method models the probability of different financial results of the Acquired Entities during the earn-out period, utilizing a discount rate, which reflects a credit spread over the term-adjusted continuous risk-free rate. As of June 30, 2022 and the Effective Date, the Earnout Payments associated with the Jake Marshall Transaction were valued utilizing a discount rate of 8.80% and 6.83%, respectively. The discount rate was calculated using the build-up method with a risk-free rate commensurate with the term of the Earnout Payments based on the U.S. Treasury Constant Maturity Yield.

Prior to its termination as a result of the 2021 Refinancing, the Company's CB Warrants were determined using the Black-Scholes-Merton option pricing model. The valuation inputs included the quoted price of the Company’s common stock in an active market, volatility and expected life of the warrants, which were considered Level 3 inputs. The CB Warrants liability was included in other long-term liabilities on the Company's Condensed Consolidated Balance Sheets. The Company remeasured the fair value of the CB Warrants liability as of February 24, 2021 and recorded any adjustments to other income (expense). Prior to its extinguishment, the CB Warrants liability was $2.0 million. Due to the extinguishment of the CB Warrants on the 2021 Refinancing Date, there was no liability associated with the CB Warrants. For the period from January 1, 2021 through the 2021 Refinancing Date, the Company recorded other income of $14 thousand to reflect the change in the CB Warrants liability.

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Note 9 – Earnings per Share

Earnings per Share

The Company calculates earnings per share in accordance with ASC Topic 260 - Earnings Per Share (“EPS”). Basic earnings per common share applicable to common stockholders is computed by dividing earnings applicable to common stockholders by the weighted-average number of common shares outstanding and assumed to be outstanding. Diluted EPS assumes the dilutive effect of outstanding common stock warrants, shares issued in conjunction with the Company’s ESPP and RSUs, all using the treasury stock method.

The following table sets forth the computation of the basic and diluted earnings per share attributable to the Company's common shareholders for the three and six months ended June 30, 2022 and 2021:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands, except per share amounts)	2022		2021		2022		2021
EPS numerator:
Net income (loss)	$	866	$	732	$	(650)	$	(1,550)
EPS denominator:
Weighted average shares outstanding – basic	10,423		10,252		10,422		9,738
Impact of dilutive securities(1)	144		217		—		—
Weighted average shares outstanding – diluted	10,567		10,469		10,422		9,738
EPS:
Basic	$	0.08	$	0.07	$	(0.06)	$	(0.16)
Diluted	$	0.08	$	0.07	$	(0.06)	$	(0.16)

(1)    For the six months ended June 30, 2022 and 2021, the Company excluded 150,420 and 225,974, respectively, of potentially dilutive securities related to certain of the Company's outstanding common stock warrants, shares issued in conjunction with the Company's ESPP and nonvested RSUs. These securities were excluded from the computation as their effect would have been anti-dilutive. As a result, the computations of net loss per share for the six months ended June 30, 2022 and 2021 is the same for both basic and diluted.

The following table summarizes the securities that were antidilutive or out-of-the-money, and therefore, were not included in the computations of diluted income per common share:

	Three Months Ended June 30,		Six Months Ended June 30,
	2022	2021	2022	2021
In-the-money warrants	—	—	—	—
Out-of-the-money warrants (see Note 7)	1,229,643	4,403,930	1,229,643	4,403,930
Service-based RSUs (See Note 14)	17,595	334	72,871	142,120
Performance and market-based RSUs(1)	48,229	13,929	85,969	79,971
Employee Stock Purchase Plan	—	—	8,451	4,778
Total	1,295,467	4,418,193	1,396,934	4,630,799

(1)    For the three and six months ended June 30, 2022 and 2021, certain MRSU awards (each defined in Note 14) were not included in the computation of diluted income per common share because the performance and market conditions were not satisfied during the periods and would not be satisfied if the reporting date was at the end of the contingency period.

Note 10 – Income Taxes

The Company is taxed as a C corporation.

For interim periods, the provision for income taxes (including federal, state, local and foreign taxes) is calculated based on the estimated annual effective tax rate, adjusted for certain discrete items for the full fiscal year. Cumulative adjustments to the Company's estimate are recorded in the interim period in which a change in the estimated annual effective rate is determined.

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Each quarter the Company updates its estimate of the annual effective tax rate, and if its estimated tax rate changes, the Company makes a cumulative adjustment.

The following table presents our income tax provision (benefit) and our income tax rate for the three and six months ended June 30, 2022 and 2021.

	Three Months Ended June 30,						Six Months Ended June 30,
(in thousands, except percentages)	2022			2021			2022			2021
Income tax provision (benefit)	$	237		$	264		$	(379)		$	(771)
Income tax rate	21.5		%	26.5		%	36.8		%	33.2		%

The difference in the effective tax rate was the result of certain discrete tax items. During the three months ended June 30, 2022, the Company recorded discrete tax items of approximately $0.1 million related to a retroactive change in a state income tax rate. No discrete tax items were recorded for the three months ended June 30, 2021. For the six months ended June 30, 2022 and 2021, the Company recorded discrete tax items of approximately $0.1 million and $0.2 million, respectively, related to excess tax benefits associated with stock-based compensation.

No valuation allowance was required as of June 30, 2022 or December 31, 2021.

Note 11 – Operating Segments

As discussed in Note 1, the Company operates in two segments, (i) GCR, in which the Company generally manages new construction or renovation projects that involve primarily HVAC, plumbing, or electrical services awarded to the Company by general contractors or construction managers, and (ii) ODR, in which the Company provides maintenance or service primarily on HVAC, plumbing or electrical systems, building controls and specialty contracting projects direct to, or assigned by, building owners or property managers. These segments are reflective of how the Company’s Chief Operating Decision Maker (“CODM”) reviews operating results for the purposes of allocating resources and assessing performance. The Company's CODM is comprised of its Chief Executive Officer, Chief Financial Officer and Chief Operating Officer.

The CODM evaluates performance based on income from operations of the respective branches after the allocation of Corporate office operating expenses. In accordance with ASC Topic 280 – Segment Reporting, the Company has elected to aggregate all of the construction branches into one GCR reportable segment and all of the service branches into one ODR reportable segment. All transactions between segments are eliminated in consolidation. The Company's corporate department provides general and administrative support services to its two operating segments. The CODM allocates costs between segments for selling, general and administrative expenses and depreciation expense.

All of the Company’s identifiable assets are located in the United States, which is where the Company is domiciled. Interest expense is not allocated to segments because of the corporate management of debt service including interest.

Condensed consolidated segment information for the three and six months ended June 30, 2022 and 2021 were as follows:

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	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2022		2021		2022		2021
Statement of Operations Data:
Revenue:
GCR	$	66,336	$	87,550	$	138,268	$	172,354
ODR	49,784		33,469		92,674		62,009
Total revenue	116,120		121,019		230,942		234,363
Gross profit:
GCR	8,694		8,885		17,052		18,280
ODR	12,626		9,805		22,608		17,639
Total gross profit	21,320		18,690		39,660		35,919
Selling, general and administrative:
GCR	7,980		9,070		16,545		18,184
ODR	10,135		7,526		19,705		14,880
Corporate	575		636		1,174		1,313
Total selling, general and administrative	18,690		17,232		37,424		34,377
Change in fair value of contingent consideration	765		—		765		—
Amortization of intangibles	399		104		798		208
Operating income	$	1,466	$	1,354	$	673	$	1,334
Less unallocated amounts:
Interest expense, net	(478)		(452)		(964)		(1,716)
Gain on disposition of property and equipment	147		94		111		8
Loss on early termination of operating lease	(32)		—		(849)		—
Loss on early debt extinguishment	—		—		—		(1,961)
Gain on change in fair value of warrant liability	—		—		—		14
Total unallocated amounts	(363)		(358)		(1,702)		(3,655)
Income (loss) before income taxes	$	1,103	$	996	$	(1,029)	$	(2,321)
Other Data:
Depreciation and amortization:
GCR	$	1,075	$	1,020	$	2,183	$	2,056
ODR	612		345		1,167		700
Corporate	399		104		798		208
Total other data	$	2,086	$	1,469	$	4,148	$	2,964

The Company does not identify capital expenditures and total assets by segment in its internal financial reports due in part to the shared use of a centralized fleet of vehicles and specialized equipment. Interest expense is also not allocated to segments because of the Company’s corporate management of debt service, including interest.

Note 12 - Leases

The Company leases real estate, trucks and other equipment. The determination of whether an arrangement is, or contains, a lease is performed at the inception of the arrangement. Classification and initial measurement of the right-of-use asset and lease liability are determined at the lease commencement date. The Company elected the short-term lease measurement and recognition exemption; therefore, leases with an initial term of 12 months or less are not recorded on the condensed consolidated balance sheets. Instead, the short-term leases are recognized in expense on a straight-line basis over the lease term.

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The Company's arrangements include certain non-lease components such as common area and other maintenance for leased real estate, as well as mileage, fuel and maintenance costs related to leased vehicles. For all leased asset classes, the Company has elected to not separate non-lease components from lease components and will account for each separate lease component and non-lease component associated with the lease as a single lease component. The Company does not guarantee any residual value in its lease agreements, and there are no material restrictions or covenants imposed by lease arrangements. Real estate leases typically include one or more options to extend the lease. The Company regularly evaluates the renewal options, and when they are reasonably certain of exercise, the Company includes the renewal period in its lease term. For the Company's leased vehicles, the Company uses the interest rate implicit in its leases with the lessor to discount lease payments at the lease commencement date. When the implicit rate is not readily available, as is the case with the Company's real estate leases, the Company uses quoted borrowing rates on its secured debt.

Related Party Lease Agreement. In conjunction with the closing of the Jake Marshall Transaction, the Company entered into an operating lease for certain land and facilities owned by a former member of JMLLC who became a full-time employee of the Company. The lease term is 10 years and includes an option to extend the lease for two successive periods of two years each through November 2035. Base rent for the term of the lease is $37,500 per month for the first five years with payment commencing on January 1, 2022. The fixed rent payment is escalated to $45,000 per month for years 6 through 10 of the lease term. Fixed rent payments for the extension term shall be increased from $45,000 by the percentage increase, if any, in the consumer price index from the lease commencement date. In addition, under the agreement, the Company is required to pay its share of estimated property taxes and operating expenses, both of which are variable lease expenses.

Southern California Sublease. In June, 2021, the Company entered into a sublease agreement with a third party for the entire ground floor of its leased space in Southern California, consisting of 71,787 square feet. Under the terms of the sublease agreement, the sublessee is obligated to pay the Company base rent of approximately $0.6 million per year, which is subject to a 3.0% annual rent increase, plus certain operating expenses and other costs. The initial lease term commenced in September 2021 and continues through April 30, 2027. As of June 30, 2022, the Company remains obligated under the original lease for such office space and, in the event the subtenant of such office space fails to satisfy its obligations under the sublease, the Company would be required to satisfy its obligations directly to the landlord under such original lease.

In addition, during the first quarter of 2022, the Company entered into an amendment to the aforementioned sublease agreement, which, among other things, expanded the sublease premises to include the entire second floor of its leased space in Southern California, consisting of 16,720 square feet. Under the terms of the amended sublease agreement, the sublessee is obligated to pay the Company base rent of approximately $0.8 million per year, which is subject to a 3.0% annual rent increase, plus certain operating expenses and other costs. The amended sublease term commenced in March 2022 and continues through April 30, 2027. For the three and six months ended June 30, 2022, the Company recorded approximately $0.2 million and $0.4 million of income in selling, general and administrative expenses related to this sublease agreement.

Pittsburgh Lease Termination. In March, 2022, the Company entered into a lease termination agreement (the “Lease Termination Agreement”) to terminate, effective March 31, 2022, the lease associated with the Company’s office space located in Pittsburgh, Pennsylvania, which previously served as its corporate headquarters. Absent the Lease Termination Agreement, the lease would have expired in accordance with its terms in July 2025. Pursuant to the Lease Termination Agreement, in exchange for allowing the Company to terminate the lease early, the Company agreed to pay a termination fee in the aggregate of approximately $0.7 million in 16 equal monthly installments commencing on April 1, 2022. The Company recognized the full termination fee expense during the first quarter of 2022.

In connection with the lease termination, the Company recognized a gain of $0.1 million associated with the derecognition of the operating lease right-of-use asset and corresponding operating lease liabilities associated with the operating lease and recorded a $0.1 million loss on the disposal of leasehold improvements and moving expenses.

The following table summarizes the lease amounts included in the Company's condensed consolidated balance sheets:

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(in thousands)	Classification on the Condensed Consolidated Balance Sheets	June 30, 2022		December 31, 2021
Assets
Operating	Operating lease right-of-use assets(1)	$	16,644	$	20,119
Finance	Property and equipment, net(2)	5,474		4,916
Total lease assets		$	22,118	$	25,035
Liabilities
Current
Operating	Current operating lease liabilities	$	3,415	$	4,366
Finance	Current portion of long-term debt	2,465		2,451
Noncurrent
Operating	Long-term operating lease liabilities	14,086		16,576
Finance	Long-term debt	3,200		2,681
Total lease liabilities		$	23,166	$	26,074

(1)     Operating lease assets are recorded net of accumulated amortization of $15.0 million at June 30, 2022 and $15.9 million at December 31, 2021.

(2)    Finance lease assets are recorded net of accumulated amortization of $6.0 million at June 30, 2022 and $5.9 million at December 31, 2021.

The following table summarizes the lease costs included in the Company's condensed consolidated statements of operations for the three and six months ended June 30, 2022 and 2021:

		Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	Classification on the Condensed Consolidated Statement of Operations	2022		2021		2022		2021
Operating lease cost	Cost of revenue(1)	$	657	$	685	$	1,351	$	1,375
Operating lease cost	Selling, general and administrative(1)	631		584		1,335		1,169
Finance lease cost
Amortization	Cost of revenue(2)	685		652		1,336		1,327
Interest	Interest expense, net(2)	66		78		132		164
Total lease cost		$	2,039	$	1,999	$	4,154	$	4,035

(1)    Operating lease costs recorded in cost of revenue included $0.1 million of variable lease costs for each of the three months ended June 30, 2022 and 2021, and $0.2 million for each of the six months ended June 30, 2022 and 2021. In addition, $0.1 million of variable lease costs are included in selling, general and administrative for each of the three months ended June 30, 2022 and 2021, and $0.2 million for each of the six months ended June 30, 2022 and 2021. These variable costs consist of the Company's proportionate share of operating expenses, real estate taxes and utilities.

(2)     Finance lease costs recorded in cost of revenue include variable lease costs of $1.0 million and $0.7 million for the three months ended June 30, 2022 and 2021, respectively, and $1.8 million and $1.3 million for the six months ended June 30, 2022 and 2021, respectively. These variable lease costs consist of fuel, maintenance, and sales tax charges.

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2022 were as follows:

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			Operating Leases
Year ending (in thousands):	Finance Leases		Non-Related Party		Related Party(1)		Sublease Receipts(2)		Total Operating
Remainder of 2022	$	1,353	$	2,104	$	225	$	(435)	$	1,894
2023	1,990		3,108		450		(885)		2,673
2024	1,274		2,502		450		(912)		2,040
2025	777		2,148		450		(939)		1,659
2026	271		2,010		450		(967)		1,493
Thereafter	—		2,033		4,815		(327)		6,521
Total minimum lease payments	$	5,665	$	13,905	$	6,840	$	(4,465)	$	16,280
Amounts representing interest	397
Present value of net minimum lease payments	$	6,062

(1)    Associated with the aforementioned related party lease entered into with a former member of JMLLC.

(2)    Associated with the aforementioned third party sublease.

The following is a summary of the lease terms and discount rates:

	June 30, 2022		December 31, 2021
Weighted average lease term (in years):
Operating	7.29		7.10
Finance	2.78		2.51
Weighted average discount rate:
Operating	4.67	%	4.68	%
Finance	4.99	%	5.27	%

The following is a summary of other information and supplemental cash flow information related to finance and operating leases:

	Six months ended June 30,
(in thousands)	2022		2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,619	$	2,456
Operating cash flows from finance leases	132		164
Financing cash flows from finance leases	1,358		1,318
Right-of-use assets exchanged for lease liabilities:
Operating leases	—		156
Finance leases	1,968		336
Right-of-use assets disposed or adjusted modifying operating leases liabilities	(1,276)		36
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$	(77)	—

Note 13 – Commitments and Contingencies

Legal. The Company is continually engaged in administrative proceedings, arbitrations, and litigation with owners, general contractors, suppliers, and other unrelated parties, all arising in the ordinary courses of business. The ultimate resolution of these contingencies could, individually or in the aggregate, be material to the condensed consolidated financial statements. In the opinion of the Company’s management, the current belief is that the results of these actions will not have a material adverse effect on the financial position, results of operations, or cash flows of the Company.

On January 23, 2020, plaintiff, Bernards Bros. Inc. (“Bernards”), filed a complaint against the Company in Superior Court of the State of California for the County of Los Angeles. The complaint alleges that the Company's Southern California operations refused to honor a proposal made to Bernards to act as a subcontractor on a construction project, and that, as a result of the

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wrongful failure to honor the proposal, Bernards suffered damages in excess of $3.0 million, including alleged increased costs for hiring a different subcontractor to perform the work. The Company is vigorously defending the suit. A non-binding mediation took place on August 19, 2021 that did not result in a settlement. Per the agreement of the Company and Bernards, in January 2022, the Court appointed a private referee to manage the case and adjudicate the dispute. A trial date has been set for January 2023. The Company believes that a loss is neither probable nor reasonably estimable for this matter, and, as such, has not recorded a loss contingency.

On April 17, 2020, plaintiff, LA Excavating, Inc., filed a complaint against the Company's wholly-owned subsidiary, Limbach Company LP, and several other parties, in Superior Court of the State of California, for the County of Los Angeles. The complaint sought damages of approximately $1.0 million for alleged failure to pay contract balances and extra work ordered by Limbach Company LP, as well as sought to enforce payment obligations under a payment bond. In April 2022, the parties settled for an immaterial amount and the case was dismissed.

On January 26, 2022, claimant, Suffolk Construction Company, Inc. (“Suffolk”) filed a Demand for Arbitration in Massachusetts against Boston Medical Center Corporation (“BMC”) and numerous of Suffolk’s trade subcontractors, including, the Company’s wholly-owned subsidiary, Limbach Company LLC, seeking to recover monies BMC withheld from Suffolk and its subcontractors based on an audit of project billings. Suffolk has demanded the Company defend and indemnify Suffolk against BMC’s audit findings that the Company overbilled the project just over $0.3 million and for the Company’s share of BMC’s audit costs, which share has not been, and cannot currently be, quantified. The Company disputes the findings of BMC’s audit and intends to vigorously defend the allegation that it overbilled the project. An arbitration hearing date has been set for February 2023. The Company believes that a loss is neither probable nor reasonably estimable for this matter, and, as such, has not recorded a loss contingency.

Surety. The terms of its construction contracts frequently require that the Company obtain from surety companies, and provide to its customers, payment and performance bonds (“Surety Bonds”) as a condition to the award of such contracts. The Surety Bonds secure its payment and performance obligations under such contracts, and the Company has agreed to indemnify the surety companies for amounts, if any, paid by them in respect of Surety Bonds issued on its behalf. In addition, at the request of labor unions representing certain of the Company's employees, Surety Bonds are sometimes provided to secure obligations for wages and benefits payable to or for such employees. Public sector contracts require Surety Bonds more frequently than private sector contracts, and accordingly, the Company's bonding requirements typically increase as the amount of public sector work increases. As of June 30, 2022, the Company had approximately $120.1 million in surety bonds outstanding. The Surety Bonds are issued by surety companies in return for premiums, which vary depending on the size and type of bond.

Collective Bargaining Agreements. Many of the Company’s craft labor employees are covered by collective bargaining agreements. The agreements require the Company to pay specified wages, provide certain benefits and contribute certain amounts to multi-employer pension plans. If the Company withdraws from any of the multi-employer pension plans or if the plans were to otherwise become underfunded, the Company could incur additional liabilities related to these plans. Although the Company has been informed that some of the multi-employer pension plans to which it contributes have been classified as “critical” status, the Company is not currently aware of any significant liabilities related to this issue.

Self-insurance. The Company is substantially self-insured for workers’ compensation and general liability claims, in the view of the relatively high per-incident deductibles the Company absorbs under its insurance arrangements for these risks. The Company purchases workers’ compensation and general liability insurance under policies with per-incident deductibles of $250,000 per occurrence and a $4.4 million maximum aggregate deductible loss limit per year. Losses incurred over primary policy limits are covered by umbrella and excess policies up to specified limits with multiple excess insurers. The Company accrues for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the consolidated balance sheets as current and non-current liabilities. The liability is determined by determining a reserve for each reported claim on a case-by-case basis based on the nature of the claim and historical loss experience for similar claims plus an allowance for the cost of incurred but not reported claims. The current portion of the liability is included in accrued expenses and other current liabilities on the consolidated balance sheet. The non-current portion of the liability is included in other long-term liabilities on the consolidated balance sheet.

The Company is self-insured related to medical and dental claims under policies with annual per-claimant and annual aggregate stop-loss limits. The Company accrues for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the consolidated balance sheets as a current liability in accrued expenses and other current liabilities.

The components of the self-insurance liability as of June 30, 2022 and December 31, 2021 are as follows:

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(in thousands)	June 30, 2022		December 31, 2021
Current liability — workers’ compensation and general liability	$	282	$	184
Current liability — medical and dental	415		456
Non-current liability	420		451
Total liability	$	1,117	$	1,091
Restricted cash	$	113	$	113

The restricted cash balance represents an imprest cash balance set aside for the funding of workers' compensation and general liability insurance claims. This amount is replenished either when depleted or at the beginning of each month.

Note 14 – Management Incentive Plans

The Company initially adopted the Omnibus Incentive Plan on July 20, 2016 for the purpose of: (a) encouraging the profitability and growth of the Company through short-term and long-term incentives that are consistent with the Company’s objectives; (b) giving participants an incentive for excellence in individual performance; (c) promoting teamwork among participants; and (d) giving the Company a significant advantage in attracting and retaining key employees, directors and consultants. To accomplish such purposes, the Omnibus Incentive Plan, and such subsequent amendments to the Omnibus Incentive Plan, provides that the Company may grant options, stock appreciation rights, restricted shares, RSUs, performance-based awards (including performance-based restricted shares and restricted stock units), other share based awards, other cash-based awards or any combination of the foregoing.

Following the approval of the 2022 Amended and Restated Omnibus Incentive Plan, the Company has reserved 2,600,000 shares of its common stock for issuance. The number of shares issued or reserved pursuant to the Omnibus Incentive Plan will be adjusted by the plan administrator, as they deem appropriate and equitable, as a result of stock splits, stock dividends, and similar changes in the Company’s common stock. In connection with the grant of an award, the plan administrator may provide for the treatment of such award in the event of a change in control. All awards are made in the form of shares only.

Service-Based Awards

The Company grants service-based stock awards in the form of RSUs. Service-based RSUs granted to executives, employees, and non-employee directors vest ratably, on an annual basis, over three years and in the case of certain awards to non-employee directors, one year. The grant date fair value of the service-based awards was equal to the closing market price of the Company’s common stock on the date of grant.

The following table summarizes the Company's service-based RSU activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	266,089	$	8.45
Granted	183,187	8.98
Vested	(120,401)	7.43
Forfeited	(24,604)	9.43
Unvested at June 30, 2022	304,271	$	9.10

Performance-Based Awards

The Company grants performance-based restricted stock units (“PRSUs”) under which shares of the Company’s common stock may be earned based on the Company’s performance compared to defined metrics. The number of shares earned under a performance award may vary from zero to 150% of the target shares awarded, based upon the Company’s performance compared to the metrics. The metrics used for the grant are determined by the Company’s Compensation Committee of the Board of Directors and are based on internal measures such as the achievement of certain predetermined adjusted EBITDA, EPS growth and EBITDA margin performance goals over a three year period.

The Company recognizes stock-based compensation expense for these awards over the vesting period based on the projected probability of achievement of the performance conditions as of the end of each reporting period during the performance period and may periodically adjust the recognition of such expense, as necessary, in response to any changes in the Company’s

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forecasts with respect to the performance conditions. For the three and six months ended June 30, 2022 and 2021, the Company recognized $0.2 million and $0.4 million of stock-based compensation expense related to outstanding PRSUs.

The following table summarizes the Company's PRSU activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	280,700	$	9.46
Granted	254,854	7.17
Vested	—	—
Forfeited	(41,123)	8.98
Unvested at June 30, 2022	494,431	$	8.32

Market-Based Awards

The following table summarizes the Company's market-based RSU (“MRSUs”) activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	102,500	$	8.26
Granted	—	—
Vested	—	—
Forfeited	(8,000)	8.26
Unvested at June 30, 2022	94,500	$	8.26

The vesting of the MRSUs is contingent upon the Company’s closing price of a share of the Company's common stock on the Nasdaq Capital market, or such other applicable principal securities exchange or quotation system, achieving at least $18.00 over a period of eighty (80) consecutive trading days during the three-year period commencing on August 1, 2018 and concluding on July 31, 2021. On September 4, 2020, the Compensation Committee of the Board of Directors of the Company approved an amendment to extend the measurement period to July 16, 2022. These awards expired on July 16, 2022 as the MRSU award conditions were not achieved.

Total recognized stock-based compensation expense amounted to $0.6 million and $1.2 million for the three and six months ended June 30, 2022, respectively, and $0.7 million and $1.3 million for the three and six months ended June 30, 2021. The aggregate fair value as of the vest date of RSUs that vested during the six months ended June 30, 2022 and 2021 was $1.1 million and $1.3 million, respectively. Total unrecognized stock-based compensation expense related to unvested RSUs which are probable of vesting was $4.0 million at June 30, 2022. These costs are expected to be recognized over a weighted average period of 1.80 years.

Note 15 – Subsequent Events

In July 2022, the Company entered into an interest rate swap agreement to manage the risk associated with a portion of its variable-rate long-term debt. The interest rate swap involves the exchange of fixed-rate and variable-rate payments without the exchange of the underlying notional amount on which the interest payments are calculated. The new swap agreement became effective on July 14, 2022 and will terminate on July 31, 2027. The notional amount of the swap agreement is $10.0 million with a fixed interest rate of 3.12%. If the one-month SOFR (as defined in the A&R Credit Agreement) is above the fixed rate, the counterparty pays the Company, and if the one-month SOFR is less the fixed rate, the Company pays the counterparty, the difference between the fixed rate of 3.12% and one-month SOFR.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with the condensed consolidated financial statements and related notes thereto included elsewhere in this Quarterly Report on Form 10-Q. In addition to historical information, this discussion contains forward-looking statements that involve risks, uncertainties and assumptions that could cause actual results to differ

25

materially from our management’s expectations. Factors that could cause such differences are discussed in “Forward-Looking Statements” and “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2021 and in subsequent Quarterly Reports on Form 10-Q. See “Item 1A. Risk Factors” in this Form 10-Q for certain periodic updates to the Company's risk factors. We assume no obligation to update any of these forward-looking statements.

Unless the context otherwise requires, a reference to a “Note” herein refers to the accompanying Notes to Condensed Consolidated Financial Statements (Unaudited) contained in Part I, "Item 1. Financial Statements."

Overview

The Company is an integrated building systems solutions firm whose expertise is in the design, modular prefabrication, installation, management and maintenance of HVAC, mechanical, electrical, plumbing and control systems for commercial, institutional and light industrial markets. The Company operates primarily in the Northeast, Mid-Atlantic, Southeast, Midwest, and Southwestern regions of the United States. In February 2022, the Company announced its strategic decision to wind down its Southern California GCR and ODR operations. The decision was made to better align the Company’s customer geographic focus and to reduce losses related to unprofitable locations. The Company expects to fully exit the Southern California Region in 2022.

The Company’s market sectors primarily include the following:

•Healthcare, including research, acute care and inpatient hospitals for regional and national hospital groups, and pharmaceutical and biotech laboratories and manufacturing facilities;

•Education, including both public and private colleges, universities, research centers and K-12 facilities;

•Sports and entertainment, including sports arenas, entertainment facilities (including casinos) and amusement rides;

•Infrastructure, including passenger terminals and maintenance facilities for rail and airports;

•Government, including various facilities for federal, state and local agencies;

•Hospitality, including hotels and resorts;

•Commercial, including office building, warehouse and distribution centers and other commercial structures;

•Mission critical facilities, including data centers; and

•Industrial manufacturing facilities, including indoor grow farms and automotive, energy and general manufacturing plants.

The Company operates in two segments, (i) GCR, in which the Company generally manages new construction or renovation projects that involve primarily HVAC, plumbing, or electrical services awarded to the Company by general contractors or construction managers, and (ii) ODR, in which the Company provides maintenance or service primarily on HVAC, plumbing or electrical systems, building controls and specialty contracting projects direct to, or assigned by, building owners or property managers. This work is primarily performed under fixed price, modified fixed price, and time and material contracts over periods of typically less than two years.

Key Components of Condensed Consolidated Statements of Operations

Revenue

The Company generates revenue principally from fixed-price construction contracts to deliver HVAC, plumbing, and electrical construction services to its customers. The duration of the Company's contracts generally ranges from six months to two years. Revenue from fixed price contracts is recognized on the cost-to-cost method, measured by the relationship of total cost incurred to total estimated contract costs. Revenue from time and materials service contracts is recognized as services are performed. The Company believes that its extensive experience in HVAC, plumbing, and electrical projects, and its internal cost review procedures during the bidding process, enable it to reasonably estimate costs and mitigate the risk of cost overruns on fixed price contracts.

The Company generally invoices customers on a monthly basis based on a schedule of values that breaks down the contract amount into discrete billing items. Costs and estimated earnings in excess of billings are recorded as a contract asset until billable under the contract terms. Billings in excess of costs and estimated earnings are recorded as a contract liability until the related revenue is recognizable.

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Cost of Revenue

Cost of revenue primarily consists of the labor, equipment, material, subcontract, and other job costs in connection with fulfilling the terms of our contracts. Labor costs consist of wages plus taxes, fringe benefits, and insurance. Equipment costs consist of the ownership and operating costs of company-owned assets, in addition to outside-rented equipment. If applicable, job costs include estimated contract losses to be incurred in future periods. Due to the varied nature of the Company's services, and the risks associated therewith, contract costs as a percentage of contract revenue have historically fluctuated and it expects this fluctuation to continue in future periods.

Selling, General and Administrative

Selling, general and administrative (“SG&A”) expenses consist primarily of personnel costs for its administrative, estimating, human resources, safety, information technology, legal, finance and accounting employees and executives. Also included are non-personnel costs, such as travel-related expenses, legal and other professional fees and other corporate expenses to support the growth of the Company's business and to meet the compliance requirements associated with operating as a public company. Those costs include accounting, human resources, information technology, legal personnel, additional consulting, legal and audit fees, insurance costs, board of directors’ compensation and the costs of achieving and maintaining compliance with Section 404 of the Sarbanes-Oxley Act of 2002.

Change in fair value of contingent consideration

The change in fair value of contingent consideration relates to the remeasurement of the contingent consideration arrangement resulting from the Jake Marshall Transaction. As a part of the total consideration for the Jake Marshall Transaction, the Company initially recognized $3.1 million in contingent consideration associated with the Earnout Payments. The carrying value of the Earnout Payments is subject to remeasurement at fair value at each reporting date through the end of the Earnout Periods with any changes in the fair value reported as a separate component of operating income (loss) in the condensed consolidated statements of operations.

Amortization of Intangibles

Amortization expense represents periodic non-cash charges that consist of amortization of various intangible assets primarily including favorable leasehold interests and certain customer relationships in the ODR segment. As a result of the Jake Marshall Transaction, the Company recognized, in the aggregate, an additional $5.7 million of intangible assets associated with customer relationships with third-party customers, the acquired trade name and acquired backlog. The Jake Marshall-related intangible assets were recorded under the acquisition method of accounting at their estimated fair values at the acquisition date.

Other (Expenses) Income

Other (expenses) income consists primarily of interest expense incurred in connection with the Company's debt, net of interest income, a loss associated with the early termination of an operating lease, a loss on early debt extinguishment, losses associated with the disposition of property and equipment and changes in fair value of warrant liability. Deferred financing costs are amortized to interest expense using the effective interest method.

Provision for Income Taxes

The Company is taxed as a C corporation and its financial results include the effects of federal income taxes which will be paid at the parent level.

For interim periods, the provision for income taxes (including federal, state and local taxes) is calculated based on the estimated annual effective tax rate. The Company accounts for income taxes in accordance with ASC Topic 740 – Income Taxes, which requires the use of the asset and liability method. Under this method, deferred tax assets and liabilities and income or expense are recognized for the expected future tax consequences of temporary differences between the financial statement carrying values and their respective tax bases, using enacted tax rates expected to be applicable in the years in which the temporary differences are expected to reverse. Changes in deferred tax assets and liabilities are recorded in the provision for income taxes.

Operating Segments

The Company manages and measures the performance of its business in two operating segments: GCR and ODR. These segments are reflective of how the Company’s CODM reviews operating results for the purposes of allocating resources and assessing performance. The Company's CODM is comprised of its Chief Executive Officer, Chief Financial Officer and Chief Operating Officer.

27

The CODM evaluates performance based on income from operations of the respective branches after the allocation of corporate office operating expenses. In accordance with ASC Topic 280 – Segment Reporting, the Company has elected to aggregate all of the GCR work performed at branches into one GCR reportable segment and all of the ODR work performed at branches into one ODR reportable segment. All transactions between segments are eliminated in consolidation. The Company's corporate department provides general and administrative support services to its two operating segments. The Company allocates costs between segments for selling, general and administrative and depreciation expense. Interest expense is not allocated to segments because of the corporate management of debt service. See Note 11 for further discussion on the Company's operating segments.

Comparison of Results of Operations for the three months ended June 30, 2022 and 2021

The following table presents operating results for the three months ended June 30, 2022 and 2021 in dollars and expressed as a percentage of total revenue (except as indicated below), as compared below:

	Three Months Ended June 30,
	2022					2021
(in thousands except for percentages)
Statement of Operations Data:
Revenue:
GCR	$	66,336	57.1	%		$	87,550	72.3	%
ODR	49,784		42.9	%		33,469		27.7	%
Total revenue	116,120		100.0	%		121,019		100.0	%
Gross profit:
GCR	8,694		13.1	%	(1)	8,885		10.1	%	(1)
ODR	12,626		25.4	%	(2)	9,805		29.3	%	(2)
Total gross profit	21,320		18.4	%		18,690		15.4	%
Selling, general and administrative:
GCR	7,980		12.0	%	(1)	9,070		10.4	%	(1)
ODR	10,135		20.4	%	(2)	7,526		22.5	%	(2)
Corporate	575		0.5	%		636		0.5	%
Total selling, general and administrative	18,690		16.1	%		17,232		14.2	%
Change in fair value of contingent consideration (Corporate)	765		0.7	%		—		—	%
Amortization of intangibles (Corporate)	399		0.3	%		104		0.1	%
Operating (loss) income:
GCR	714		1.1	%	(1)	(185)		(0.2)	%	(1)
ODR	2,491		5.0	%	(2)	2,279		6.8	%	(2)
Corporate	(1,739)		(1.5)	%		(740)		(0.6)	%
Total operating income	1,466		1.3	%		1,354		1.1	%
Other expenses (Corporate)	(363)		(0.3)	%		(358)		(0.3)	%
Total consolidated income before income taxes	1,103		0.9	%		996		0.8	%
Income tax (benefit) provision	237		0.2	%		264		0.2	%
Net income	$	866	0.7	%		$	732	0.6	%

(1)As a percentage of GCR revenue.

(2)As a percentage of ODR revenue.

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Revenue

	Three Months Ended June 30,
	2022		2021		Increase/(Decrease)
(in thousands except for percentages)
Revenue:
GCR	$	66,336	$	87,550	$	(21,214)	(24.2)	%
ODR	49,784		33,469		16,315		48.7	%
Total revenue	$	116,120	$	121,019	$	(4,899)	(4.0)	%

Revenue for the three months ended June 30, 2022 decreased by $4.9 million compared to the three months ended June 30, 2021. GCR revenue decreased by $21.2 million, or 24.2%, while ODR revenue increased by $16.3 million, or 48.7%. The decrease in period over period GCR segment revenue was primarily due to revenue declines in the Michigan, Mid-Atlantic, New England, Orlando and Southern California operating regions. The Company continued to focus on improving project execution and profitability by pursuing GCR opportunities that were smaller in size, shorter in duration, and where the Company can leverage its captive design and engineering services. In addition, in February 2022, the Company announced its strategic decision to wind down its Southern California operations. The Company expects to fully exit the Southern California Region in 2022. The increase in period over period ODR segment revenue was primarily due to the Company's continued focus on the accelerated growth of its ODR business. For the three months ended June 30, 2022, GCR and ODR segment revenue increased by $4.3 million and $8.4 million, respectively, as a result of revenue generated by the Acquired Entities in the Jake Marshall Transaction. See Note 3 for further information on the Jake Marshall Transaction.

In addition, during the second quarter of 2022, the Company was impacted by supply chain issues delaying equipment delivery, which resulted in revenue being pushed to future periods.

Gross Profit

	Three Months Ended June 30,
	2022			2021			Increase/(Decrease)
(in thousands except for percentages)
Gross profit:
GCR	$	8,694		$	8,885		$	(191)	(2.1)	%
ODR	12,626			9,805			2,821		28.8	%
Total gross profit	$	21,320		$	18,690		$	2,630	14.1	%
Total gross profit as a percentage of consolidated total revenue	18.4		%	15.4		%

The Company's gross profit for the three months ended June 30, 2022 increased by $2.6 million compared to the three months ended June 30, 2021. GCR gross profit decreased $0.2 million, or 2.1%, primarily due to lower revenue despite higher margins. ODR gross profit increased $2.8 million, or 28.8%, due to an increase in revenue despite lower margins. The total gross profit percentage increased from 15.4% for the three months ended June 30, 2021 to 18.4% for the same period ended in 2022, mainly driven by the mix of higher margin ODR segment work as well as a gross profit write-up of $1.3 million related to a settlement of a prior claim.

The Company recorded revisions in its contract estimates for certain GCR and ODR projects. During the three months ended June 30, 2022, the Company recorded a material gross profit write-up on one GCR project for a total of $1.3 million that had a net gross profit impact of $0.5 million or more. During the three months ended June 30, 2021, the Company recorded a material gross profit write-down on one GCR project for a total of $1.0 million that had a net gross profit impact of $0.5 million or more.

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Selling, General and Administrative

	Three Months Ended June 30,
	2022			2021			Increase/(Decrease)
(in thousands except for percentages)
Selling, general and administrative:
GCR	$	7,980		$	9,070		$	(1,090)	(12.0)	%
ODR	10,135			7,526			2,609		34.7	%
Corporate	575			636			(61)		(9.6)	%
Total selling, general and administrative	$	18,690		$	17,232		$	1,458	8.5	%
Total selling, general and administrative as a percentage of consolidated total revenue	16.1		%	14.2		%

The Company's SG&A expense for the three months ended June 30, 2022 increased by approximately $1.5 million compared to the three months ended June 30, 2021. The increase in SG&A was primarily due to a $1.4 million increase associated with costs incurred by the Acquired Entities in the Jake Marshall Transaction, a $0.5 million increase in travel and entertainment expense and a $0.7 million increase in payroll related expenses, partially offset by a $0.2 million decrease in rent expense and a $0.2 million decrease in professional fee related expenses. Additionally, SG&A as a percentage of revenue were 16.1% for the three months ended June 30, 2022 and 14.2% for the three months ended June 30, 2021.

Change in Fair Value of Contingent Consideration

The change in fair value of the Earnout Payments contingent consideration was a $0.8 million loss for the three months ended June 30, 2022. The increase to the contingent liability was primarily attributable to the timing component and probability of meeting the gross profit margins associated with the contingent consideration arrangement as of June 30, 2022.

Amortization of Intangibles

	Three Months Ended June 30,
	2022		2021		Increase/(Decrease)
(in thousands except for percentages)
Amortization of intangibles (Corporate)	$	399	$	104	$	295	283.7	%

Total amortization expense for the three months ended June 30, 2022 was $0.4 million as compared to $0.1 million for the three months ended June 30, 2021. As a result of the Jake Marshall Transaction, the Company acquired certain intangible assets in which the Company recognized approximately $0.3 million of amortization expense for the three months ended June 30, 2022. See Note 5 for further information on the Company's intangible assets.

Other Expenses

	Three Months Ended June 30,
	2022		2021		Increase/(Decrease)
(in thousands except for percentages)
Other (expenses) income:
Interest expense, net	$	(478)	$	(452)	$	(26)	5.8	%
Gain on disposition of property and equipment	147		94		53		56.4	%
Loss on early termination of operating lease	(32)		—		(32)		100.0	%
Loss on early debt extinguishment	—		—		—		—	%
Gain on change in fair value of warrant liability	—		—		—		—	%
Total other expenses	$	(363)	$	(358)	$	(5)	1.4	%

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Other (expenses) income was primarily flat for the three months ended June 30, 2022 as compared to the three months ended June 30, 2021. Interest expense was $0.5 million for both the three months ended June 30, 2022 and 2021 and the gain on disposition of property and equipment was $0.1 million for each of the same periods.

Income Taxes

The Company recorded a $0.2 million income tax provision for the three months ended June 30, 2022 and a $0.3 million income tax provision for the three months ended June 30, 2021. The effective tax rate was 21.5% and 26.5% for the three months ended June 30, 2022 and 2021, respectively. The difference in the effective tax rate was the result of certain discrete tax items. During the three months ended June 30, 2022, the Company recorded discrete tax items of approximately $0.1 million related to a retroactive change in a state income tax rate. No discrete tax items were recorded for the three months ended June 30, 2021.

Comparison of Results of Operations for the six months ended June 30, 2022 and 2021

The following table presents operating results for the six months ended June 30, 2022 and 2021 in dollars and expressed as a percentage of total revenue (except as indicated below), as compared below:

	Six Months Ended June 30,
	2022					2021
(in thousands except for percentages)
Statement of Operations Data:
Revenue:
GCR	$	138,268	59.9	%		$	172,354	73.5	%
ODR	92,674		40.1	%		62,009		26.5	%
Total revenue	230,942		100.0	%		234,363		100.0	%
Gross profit:
GCR	17,052		12.3	%	(1)	18,280		10.6	%	(1)
ODR	22,608		24.4	%	(2)	17,639		28.4	%	(2)
Total gross profit	39,660		17.2	%		35,919		15.3	%
Selling, general and administrative:
GCR	16,545		12.0	%	(1)	18,184		10.6	%	(1)
ODR	19,705		21.3	%	(2)	14,880		24.0	%	(2)
Corporate	1,174		0.5	%		1,313		0.6	%
Total selling, general and administrative	37,424		16.2	%		34,377		14.7	%
Change in fair value of contingent consideration (Corporate)	765		0.3	%		—		—	%
Amortization of intangibles (Corporate)	798		0.3	%		208		0.1	%
Operating (loss) income:
GCR	507		0.4	%	(1)	96		0.1	%	(1)
ODR	2,903		3.1	%	(2)	2,759		4.4	%	(2)
Corporate	(2,737)		(1.2)	%		(1,521)		(0.6)	%
Total operating income	673		0.3	%		1,334		0.6	%
Other expenses (Corporate)	(1,702)		(0.7)	%		(3,655)		(1.6)	%
Total consolidated loss before income taxes	(1,029)		(0.4)	%		(2,321)		(1.0)	%
Income tax benefit	(379)		(0.2)	%		(771)		(0.3)	%
Net loss	$	(650)	(0.3)	%		$	(1,550)	(0.7)	%

(1)As a percentage of GCR revenue.

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(2)As a percentage of ODR revenue.

Revenue

	Six Months Ended June 30,
	2022		2021		Increase/(Decrease)
(in thousands except for percentages)
Revenue:
GCR	$	138,268	$	172,354	$	(34,086)	(19.8)	%
ODR	92,674		62,009		30,665		49.5	%
Total revenue	$	230,942	$	234,363	$	(3,421)	(1.5)	%

Revenue for the six months ended June 30, 2022 decreased by $3.4 million compared to the six months ended June 30, 2021. GCR revenue decreased by $34.1 million, or 19.8%, while ODR revenue increased by $30.7 million, or 49.5%. The decrease in period over period GCR segment revenue was primarily due to revenue declines in the Michigan, Mid-Atlantic, New England, Orlando and Southern California operating regions. The Company continued to focus on improving project execution and profitability by pursuing GCR opportunities that were smaller in size, shorter in duration, and where the Company can leverage its captive design and engineering services. In addition, in February 2022, the Company announced its strategic decision to wind down its Southern California operations. The Company expects to fully exit the Southern California Region in 2022. The increase in period over period ODR segment revenue was primarily due to the Company's continued focus on the accelerated growth of its ODR business. For the six months ended June 30, 2022, GCR and ODR segment revenue increased by $8.9 million and $15.6 million, respectively, as a result of revenue generated by the Acquired Entities in the Jake Marshall Transaction. See Note 3 for further information on the Jake Marshall Transaction.

In addition, during the six months ended June 30, 2022, the Company was impacted by supply chain issues delaying equipment delivery, which resulted in revenue being pushed to future periods.

Gross Profit

	Six Months Ended June 30,
	2022			2021			Increase/(Decrease)
(in thousands except for percentages)
Gross profit:
GCR	$	17,052		$	18,280		$	(1,228)	(6.7)	%
ODR	22,608			17,639			4,969		28.2	%
Total gross profit	$	39,660		$	35,919		$	3,741	10.4	%
Total gross profit as a percentage of consolidated total revenue	17.2		%	15.3		%

The Company's gross profit for the six months ended June 30, 2022 increased by $3.7 million compared to the six months ended June 30, 2021. GCR gross profit decreased $1.2 million, or 6.7%, primarily due to lower revenue despite higher margins. ODR gross profit increased $5.0 million, or 28.2%, due to an increase in revenue despite lower margins. The total gross profit percentage increased from 15.3% for the six months ended June 30, 2021 to 17.2% for the same period ended in 2022, mainly driven by the mix of higher margin ODR segment work as well as a gross profit write-up of $1.3 million related to a settlement of a prior claim.

The Company recorded revisions in its contract estimates for certain GCR and ODR projects. During the six months ended June 30, 2022, the Company recorded a material gross profit write-up on one GCR project for a total of $1.3 million that had a net gross profit impact of $0.5 million or more. During the six months ended June 30, 2021, the Company recorded material gross profit write-downs on two GCR projects for a total of $1.5 million that had a net gross profit impact of $0.5 million or more.

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Selling, General and Administrative

	Six Months Ended June 30,
	2022			2021			Increase/(Decrease)
(in thousands except for percentages)
Selling, general and administrative:
GCR	$	16,545		$	18,184		$	(1,639)	(9.0)	%
ODR	19,705			14,880			4,825		32.4	%
Corporate	1,174			1,313			(139)		(10.6)	%
Total selling, general and administrative	$	37,424		$	34,377		$	3,047	8.9	%
Total selling, general and administrative as a percentage of consolidated total revenue	16.2		%	14.7		%

The Company's SG&A expense for the six months ended June 30, 2022 increased by approximately $3.0 million compared to the six months ended June 30, 2021. The increase in SG&A was primarily due to a $3.0 million increase associated with costs incurred by the Acquired Entities in the Jake Marshall Transaction and a $1.0 million increase in travel and entertainment expense, partially offset by a $0.3 million decrease in rent related expenses coupled with other various immaterial decreases to SG&A. Additionally, SG&A as a percentage of revenue were 16.2% for the six months ended June 30, 2022 and 14.7% for the six months ended June 30, 2021.

Change in Fair Value of Contingent Consideration

The change in fair value of the Earnout Payments contingent consideration was a $0.8 million loss for the six months ended June 30, 2022. The increase to the contingent liability was primarily attributable to the timing component and probability of meeting the gross profit margins associated with the contingent consideration arrangement as of June 30, 2022.

Amortization of Intangibles

	Six Months Ended June 30,
	2022		2021		Increase/(Decrease)
(in thousands except for percentages)
Amortization of intangibles (Corporate)	$	798	$	208	$	590	283.7	%

Total amortization expense for the six months ended June 30, 2022 was $0.8 million as compared to $0.2 million for the six months ended June 30, 2021. As a result of the Jake Marshall Transaction, the Company acquired certain intangible assets in which the Company recognized approximately $0.6 million of amortization expense for the six months ended June 30, 2022. See Note 5 for further information on the Company's intangible assets.

Other Expenses

	Six Months Ended June 30,
	2022		2021		Increase/(Decrease)
(in thousands except for percentages)
Other (expenses) income:
Interest expense, net	$	(964)	$	(1,716)	$	752	(43.8)	%
Gain on disposition of property and equipment	111		8		103		1,287.5	%
Loss on early termination of operating lease	(849)		—		(849)		100.0	%
Loss on early debt extinguishment	—		(1,961)		1,961		100.0	%
Gain on change in fair value of warrant liability	—		14		(14)		(100.0)	%
Total other expenses	$	(1,702)	$	(3,655)	$	1,953	(53.4)	%

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Other (expenses) income consisted of interest expense of $1.0 million for the six months ended June 30, 2022 as compared to $1.7 million for the six months ended June 30, 2021. The reduction in interest expense period over period was due to the refinancing of the higher interest rate debt with a lower interest rate debt instrument as a result of the 2021 Refinancing and the A&R Wintrust Agreement. The decrease in other expenses period over period was also attributable to a prior year loss of $2.0 million on the early extinguishment of debt associated with the Company's 2021 Refinancing. During the six months ended June 30, 2022, the Company recognized a $0.8 million loss as a result of the early termination of its Pittsburgh operating lease. See Note 12 for further information.

Income Taxes

The Company recorded a $0.4 million and $0.8 million income tax benefit for the six months ended June 30, 2022 and 2021, respectively. The effective tax rate was 36.8% and 33.2% for the six months ended June 30, 2022 and 2021, respectively.

GCR and ODR Backlog Information

The Company refers to its estimated revenue on uncompleted contracts, including the amount of revenue on contracts for which work has not begun, less the revenue it had recognized under such contracts, as “backlog.” Backlog includes unexercised contract options. The Company's backlog includes projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions. Additionally, the difference between the Company's backlog and remaining performance obligations is due to the portion of unexercised contract options that are excluded, under certain contract types, from the Company's remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer. Additional information related to the Company's remaining performance obligations is provided in Note 4.

Given the multi-year duration of many of the Company's contracts, revenue from backlog is expected to be earned over a period that will extend beyond one year. The Company's GCR backlog as of June 30, 2022 was $308.8 million compared to $337.2 million at December 31, 2021. In addition, ODR backlog as of June 30, 2022 was $119.3 million compared to $98.0 million at December 31, 2021. Of the total backlog at June 30, 2022, the Company expects to recognize approximately $242.5 million by the end of 2022.

COVID-19 and Market Update

In March 2020, the World Health Organization declared the outbreak of the coronavirus disease 2019 (“COVID-19”) a global pandemic. The COVID-19 pandemic has caused significant disruption and volatility on a global scale resulting in, among other things, an economic slowdown, impacts to global supply chains, and the possibility of a continued economic recession. In limited instances, during fiscal 2020, the Company faced disruptions due to the COVID-19 pandemic as certain projects chose to shutdown work irrespective of the existence or applicability of government action. In most markets, construction is considered an essential business and the Company continued to staff its projects and perform work during fiscal 2020 and into 2021, and most of the projects that were in progress at the time shutdowns commenced were restarted.

As new variants of the virus emerge, the Company remains cautious as many factors remain unpredictable. The Company actively monitors and responds to the changing conditions created by the pandemic, with focus on prioritizing the health and safety of the Company’s employees, dedicating resources to support the Company’s communities, and innovating to address the Company’s customers’ needs. During 2021, the Company faced impacts of both the Delta and Omicron variants, with disruptions to the Company’s workforce, which impacted revenue.

Although the Company continues to recover from the financial impacts of the COVID-19 pandemic and related government orders implemented to mitigate it, the broader and longer-term implications the pandemic has on the global economy continue to develop. Economic disruptions, including supply chain, production, and other logistical issues, as well as escalating commodity prices, have and may continue to negatively impact our business. For example, we are experiencing lead times significantly in excess of normal levels while also experiencing the effects of inflation through increases in fuel, material, and other commodity prices. These disruptions have escalated in the first half of 2022 and have manifested themselves most notably through project delays and reduced labor productivity and efficiency, particularly within our GCR segment. In response to these challenges, the Company continues to strive to more effectively manage its business through enhanced labor planning and project scheduling, increased pricing to the extent contractually permitted, and by leveraging the Company's relationships with its suppliers and customers. However, the impact of these disruptions continue to evolve and the conflict in Ukraine has added another layer of uncertainty, as described in Item “1A. Risk Factors” in the Company's most recent Annual Report on Form 10-K filed with the SEC on March 16, 2022 and within “Item 1A. Risk Factors” in this Form 10-Q. There can be no assurance that the Company's actions will serve to mitigate such impacts in future periods. Further, while the Company believes its remaining performance obligations are firm, and its customers have not provided the Company with indications that they no longer wish to proceed with planned projects, prolonged delays in the receipt of critical equipment could result in the Company's customers

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seeking to terminate existing or pending agreements. Any of these events could have a material adverse effect on our business, financial condition, and/or results of operations.

The Company continues to monitor developments involving our workforce, customers, suppliers and vendors and take steps to mitigate against additional impacts, but given the unprecedented and evolving nature of these circumstances, it cannot predict the full extent of the impact that the economic disruptions caused by COVID-19 will have on the Company's operating results, financial condition and liquidity.

Seasonality, Cyclicality and Quarterly Trends

Severe weather can impact the Company’s operations. In the northern climates where it operates, and to a lesser extent the southern climates as well, severe winters can slow the Company’s productivity on construction projects, which shifts revenue and gross profit recognition to a later period. The Company’s maintenance operations may also be impacted by mild or severe weather. Mild weather tends to reduce demand for its maintenance services, whereas severe weather may increase the demand for its maintenance and spot services. The Company’s operations also experience mild cyclicality, as building owners typically work through maintenance and capital projects at an increased level during the third and fourth calendar quarters of each year.

Effect of Inflation and Tariffs

The prices of products such as steel, pipe, copper and equipment from manufacturers are subject to fluctuation and increases. It is difficult to accurately measure the impact of inflation, tariffs and price escalation due to the imprecise nature of the estimates required. However, these effects are, at times, material to our results of operations and financial condition. During fiscal year 2021 and through the first half of 2022, we have experienced higher cost of materials on specific projects and delays in our supply chain for equipment and service vehicles from the manufacturers, and we expect these higher costs and delays in our supply chain to persist through the remainder of 2022. When appropriate, we include cost escalation factors into our bids and proposals, as well as limit the acceptance time of our bid. In addition, we are often able to mitigate the impact of future price increases by entering into fixed price purchase orders for materials and equipment and subcontracts on our projects. Notwithstanding these efforts, if we experience significant disruptions to our supply chain, we may need to delay certain projects that would otherwise be accretive to our business and this may also impact the conversion rate of our current backlog into revenue.

Liquidity and Capital Resources

Cash Flows

The Company's liquidity needs relate primarily to the provision of working capital (defined as current assets less current liabilities) to support operations, funding of capital expenditures, and investment in strategic opportunities. Historically, liquidity has been provided by operating activities and borrowings from commercial banks and institutional lenders.

The following table presents summary cash flow information for the periods indicated:

	Six Months Ended June 30,
	2022		2021
(in thousands)
Net cash provided by (used in):
Operating activities	$	12,620	$	(24,609)
Investing activities	(284)		(140)
Financing activities	(7,182)		10,295
Net increase (decrease) in cash, cash equivalents and restricted cash	$	5,154	$	(14,454)
Noncash investing and financing transactions:
Right of use assets obtained in exchange for new operating lease liabilities	$	—	$	156
Right of use assets obtained in exchange for new finance lease liabilities	1,968		336
Right of use assets disposed or adjusted modifying operating lease liabilities	(1,276)		36
Right of use assets disposed or adjusted modifying finance lease liabilities	(77)		—
Interest paid	911		1,741
Cash paid (received) for income taxes	$	696	$	2,096

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The Company's cash flows are primarily impacted period to period by fluctuations in working capital. Factors such as the Company's contract mix, commercial terms, days sales outstanding (“DSO”) and delays in the start of projects may impact the Company's working capital. In line with industry practice, the Company accumulates costs during a given month then bills those costs in the current month for many of its contracts. While labor costs associated with these contracts are paid weekly and salary costs associated with the contracts are paid bi-weekly, certain subcontractor costs are generally not paid until the Company receives payment from its customers (contractual “pay-if-paid” terms). The Company has not historically experienced a large volume of write-offs related to its receivables and contract assets. The Company regularly assesses its receivables for collectability and provides allowances for doubtful accounts where appropriate. The Company believes that its reserves for doubtful accounts are appropriate as of June 30, 2022 and December 31, 2021, but adverse changes in the economic environment may impact certain of its customers’ ability to access capital and compensate the Company for its services, as well as impact project activity for the foreseeable future.

The Company's existing current backlog is projected to provide substantial coverage of forecasted GCR revenue for one year from the date of the financial statement issuance. The Company's current cash balance, together with cash it expects to generate from future operations along with borrowings available under its credit facility, are expected to be sufficient to finance its short- and long-term capital requirements (or meet working capital requirements) for the next twelve months. In addition to the future operating cash flows of the Company, along with its existing borrowing availability and access to financial markets, the Company currently believes it will be able to meet any working capital and future operating requirements, and capital investment forecast opportunities for the next twelve months.

The following table represents our summarized working capital information:

(in thousands, except ratios)	June 30, 2022		December 31, 2021
Current assets	$	201,930	$	192,906
Current liabilities	(142,121)		(129,742)
Net working capital	$	59,809	$	63,164
Current ratio (1)	1.42		1.49

(1)    Current ratio is calculated by dividing current assets by current liabilities.

As discussed above and in Note 6, as of June 30, 2022, the Company was in compliance with all financial maintenance covenants as required by its credit facility.

Cash Flows (Used in) Provided by Operating Activities

The following is a summary of the significant sources (uses) of cash from operating activities:

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	Six Months Ended June 30,
(in thousands)	2022		2021		Cash Inflow (outflow)
Cash flows from operating activities:
Net loss	$	(650)	$	(1,550)	$	900
Non-cash operating activities(1)	9,214		8,291		923
Changes in operating assets and liabilities:
Accounts receivable	(11,796)		(8,918)		(2,878)
Contract assets	8,904		(3,717)		12,621
Other current assets	(520)		(1,306)		786
Accounts payable, including retainage	(635)		190		(825)
Prepaid income taxes	(562)		(891)		329
Accrued taxes payable	(501)		(1,671)		1,170
Contract liabilities	13,123		(7,469)		20,592
Operating lease liabilities	(2,165)		(2,004)		(161)
Accrued expenses and other current liabilities	(1,861)		(5,450)		3,589
Other long-term liabilities	69		(114)		183
Cash used in working capital	4,056		(31,350)		35,406
Net cash provided by (used in) operating activities	$	12,620	$	(24,609)	$	37,229

(1)Represents non-cash activity associated with depreciation and amortization, provision for doubtful accounts, stock-based compensation expense, operating lease expense, amortization of debt issuance costs, deferred income tax provision, gain on sale of property and equipment, loss on early debt extinguishment, loss on early termination of operating lease and changes in the fair value of warrant liabilities.

During the six months ended June 30, 2022, the Company generated $12.6 million in cash from its operating activities, which consisted of cash provided by working capital of $4.1 million and non-cash adjustments of $9.2 million (primarily depreciation and amortization, stock-based compensation expense, operating lease expense, loss on early termination of an operating lease and the change in fair value of contingent consideration), partially offset by a net loss for the period of $0.6 million. During the six months ended June 30, 2021, the Company used $24.6 million from its operating activities, which consisted of cash used in working capital of $31.4 million and a net loss of $1.6 million, partially offset by non-cash adjustments of $8.3 million (primarily depreciation and amortization, stock-based compensation expense, operating lease expense and a loss on early debt extinguishment).

The increase in operating cash flows during the six months ended June 30, 2022 compared to the six months ended June 30, 2021 was primarily attributable to a $33.2 million cash inflow period-over-period related to the aggregate change in our contract assets and liabilities and a $3.6 million period-over-period decrease in cash outflow related to the change in accrued expenses and other current liabilities. These cash inflows were partially offset by a $2.8 million period-over-period cash outflow related to the change in accounts receivable. The increase in our overbilled position was due to the timing of contract billings and the recognition of contract revenue. In addition, the decreased cash outflow associated with accrued expenses and other current liabilities was due to the timing of payments, and the cash outflow associated with our accounts receivable was due to the timing of receipts.

Cash Flows (Used in) Provided by Investing Activities

Cash flows used in investing activities were $0.3 million for the six months ended June 30, 2022 compared to cash flows provided by investing activities $0.1 million for the six months ended June 30, 2021. For the six months ended June 30, 2022, $0.5 million was used to purchase property and equipment, offset by $0.2 million in proceeds from the sale of property and equipment. For the six months ended June 30, 2021, $0.5 million was used to purchase property and equipment, offset by $0.4 million in proceeds from the sale of property and equipment.

The majority of our cash used for investing activities in both periods was for capital additions pertaining to tools and equipment, computer software and hardware purchases, office furniture and office related leasehold improvements.

Cash Flows Provided by (Used in) Financing Activities

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Cash flows used in financing activities were $7.2 million for the six months ended June 30, 2022 compared to cash flows provided by financing activities of $10.3 million for the six months ended June 30, 2021. For the six months ended June 30, 2022, the Company made principal payments of $9.1 million, consisting of monthly installment payments of $0.6 million, an Excess Cash Flow payment of $3.3 million and a Net Claim Proceeds payment of $2.1 million, payments on the A&R Wintrust Revolving Loan of $11.7 million, payments of $1.4 million on finance leases and $0.4 million in taxes related to net share settlement of equity awards. These financing cash outflows were partly offset by $15.2 million in proceeds from borrowings under the A&R Wintrust Revolving Loan and $0.2 million associated with proceeds from contributions to the ESPP.

For the six months ended June 30, 2021, we received proceeds from the following: $22.8 million, net of fees and expenses, in conjunction with our common stock offering in February 2021, $2.0 million from the exercise of warrants and $30.0 million in connection with the refinancing of the 2019 Refinancing Term Loan with the Wintrust Loans. These proceeds were offset by the $39.0 million payment in full of the 2019 Refinancing Term Loan and associated $1.4 million prepayment penalty and other extinguishment costs, a $2.0 million scheduled principal payment on the Wintrust Term Loan, $1.3 million for payments on finance leases, $0.4 million in taxes related to net share settlement of equity awards and $0.6 million for payments related to debt issuance costs related to the Wintrust Term Loan and Revolver.

The following table reflects our available funding capacity, subject to covenant restrictions, as of June 30, 2022:

(in thousands)
Cash & cash equivalents			$	19,630
Credit agreement:
A&R Wintrust Revolving Loan	$	25,000
Outstanding borrowings on the A&R Wintrust Revolving Loan	(3,500)
Outstanding letters of credit	(3,300)
Net credit agreement capacity available			18,200
Total available funding capacity			$	37,830

Cash Flow Summary

Management continued to devote additional resources to its billing and collection efforts during the six months ended June 30, 2022. Management continues to expect that growth in its ODR business, which is less sensitive to the cash flow issues presented by large GCR projects, will positively impact our cash flow trends.

Provided that the Company’s lenders continue to provide working capital funding, the Company believes based on its current reforecast that our current cash and cash equivalents of $19.6 million as of June 30, 2022, cash payments to be received from existing and new customers, and availability of borrowing under the A&R Wintrust Revolving Loan (pursuant to which we had $18.2 million of availability as of June 30, 2022) will be sufficient to meet our working capital and capital expenditure requirements for at least the next 12 months.

Debt and Related Obligations

Long-term debt consists of the following obligations as of:

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(in thousands)	June 30, 2022		December 31, 2021
A&R Wintrust Term Loan - term loan payable in quarterly installments of principal, (commencing in December 2021) plus interest through February 2026	25,733		34,881
A&R Wintrust Revolving Loan	3,500		—
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 3.96% to 6.45% through 2025	5,665		5,132
Total debt	34,898		40,013
Less - Current portion of long-term debt	(9,893)		(9,879)
Less - Unamortized discount and debt issuance costs	(306)		(318)
Long-term debt	$	24,699	$	29,816

On the 2021 Refinancing Date, the Company refinanced its 2019 Refinancing Term Loan and 2019 Revolving Credit Facility with proceeds from the issuance of the Wintrust Term Loan. As a result of the 2021 Refinancing, the Company prepaid all principal, interest, fees and other obligations outstanding under the 2019 Refinancing Agreements and terminated its 2019 Refinancing Term Loan and 2019 Refinancing Revolving Credit Facility. In addition, on the 2021 Refinancing Date, the Company recognized a loss on the early extinguishment of debt of $2.0 million, which consisted of the write-off of $2.6 million of unamortized discount and financing costs, the reversal of the $2.0 million CB warrants liability and the prepayment penalty and other extinguishment costs of $1.4 million.

In conjunction with the Jake Marshall Transaction, the Company entered into the A&R Wintrust Credit Agreement. In accordance with the terms of the A&R Wintrust Credit Agreement, Lenders provided to LFS (i) a $35.5 million senior secured term loan; and (ii) a $25 million senior secured revolving credit facility with a $5 million sublimit for the issuance of letters of credit. The overall A&R Wintrust Term Loan commitment under the A&R Wintrust Credit Agreement was recast at $35.5 million in connection with the A&R Wintrust Credit Agreement. A portion of the A&R Wintrust Term Loan commitment was used to fund the closing purchase price of the Jake Marshall Transaction. The A&R Credit Agreement was also amended to: permit the Company to undertake the Jake Marshall Transaction, make certain adjustments to the covenants under the A&R Wintrust Credit Agreement (which were largely done to make certain adjustments for the Jake Marshall Transaction), allow for the Earnout Payments under the Jake Marshall Transaction and make other corresponding changes to the A&R Wintrust Credit Agreement.

See Note 6 for further discussion.

Surety Bonding

In connection with our business, we are occasionally required to provide various types of surety bonds that provide an additional measure of security to our customers for our performance under certain government and private sector contracts. Our ability to obtain surety bonds depends upon our capitalization, working capital, past performance, management expertise and external factors, including the capacity of the overall surety market. Surety companies consider such factors in light of the amount of our backlog that we have currently bonded and their current underwriting standards, which may change from time-to-time. The bonds we provide typically reflect the contract value. As of June 30, 2022 and December 31, 2021, the Company had approximately $120.1 million and $159.2 million in surety bonds outstanding, respectively. In January 2022, our bonding capacity was increased from $700.0 million to $800.0 million. We believe that our $800.0 million bonding capacity provides us with a significant competitive advantage relative to many of our competitors which have limited bonding capacity. See Note 13 for further discussion.

Insurance and Self-Insurance

We purchase workers’ compensation and general liability insurance under policies with per-incident deductibles of $250,000 per occurrence. Losses incurred over primary policy limits are covered by umbrella and excess policies up to specified limits with multiple excess insurers. We accrue for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the Condensed Consolidated Balance Sheets as current and non-current liabilities. The liability is computed by determining a reserve for each reported claim on a case-by-case basis based on the nature of the claim and historical loss experience for similar claims plus an allowance for the cost of incurred but not reported claims. The current portion of the liability is included in accrued expenses and other current liabilities on the Condensed Consolidated Balance Sheets. The non-current portion of the liability is included in other long-term liabilities on the Condensed Consolidated Balance Sheets.

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We are self-insured related to medical and dental claims under policies with annual per-claimant and annual aggregate stop-loss limits. We accrue for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the Condensed Consolidated Balance Sheets as a current liability in accrued expenses and other current liabilities. See Note 13 for further discussion.

Multiemployer Pension Plans

We participate in approximately 40 multiemployer pension plans (“MEPPs”) that provide retirement benefits to certain union employees in accordance with various collective bargaining agreements (“CBAs”). As one of many participating employers in these MEPPs, we are responsible with the other participating employers for any plan underfunding. Our contributions to a particular MEPP are established by the applicable CBAs; however, required contributions may increase based on the funded status of an MEPP and legal requirements of the Pension Protection Act of 2006 (the “PPA”), which requires substantially underfunded MEPPs to implement a funding improvement plan (“FIP”) or a rehabilitation plan (“RP”) to improve their funded status. Factors that could impact funded status of an MEPP include, without limitation, investment performance, changes in the participant demographics, decline in the number of contributing employers, changes in actuarial assumptions and the utilization of extended amortization provisions. Assets contributed to the MEPPs by us may be used to provide benefits to employees of other participating employers. If a participating employer stops contributing to an MEPP, the unfunded obligations of the MEPP may be borne by the remaining participating employers.

An FIP or RP requires a particular MEPP to adopt measures to correct its underfunding status. These measures may include, but are not limited to an increase in a company’s contribution rate as a signatory to the applicable CBA, or changes to the benefits paid to retirees. In addition, the PPA requires that a 5.0% surcharge be levied on employer contributions for the first year commencing shortly after the date the employer receives notice that the MEPP is in critical status and a 10.0% surcharge on each succeeding year until a CBA is in place with terms and conditions consistent with the RP.

We could also be obligated to make payments to MEPPs if we either cease to have an obligation to contribute to the MEPP or significantly reduce our contributions to the MEPP because we reduce the number of employees who are covered by the relevant MEPP for various reasons, including, but not limited to, layoffs or closure of a subsidiary assuming the MEPP has unfunded vested benefits. The amount of such payments (known as a complete or partial withdrawal liability) would equal our proportionate share of the MEPPs’ unfunded vested benefits. We believe that certain of the MEPPs in which we participate may have unfunded vested benefits. Due to uncertainty regarding future factors that could trigger withdrawal liability, we are unable to determine (a) the amount and timing of any future withdrawal liability, if any, and (b) whether our participation in these MEPPs could have a material adverse impact on our financial condition, results of operations or liquidity.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

We are a smaller reporting company as defined in Rule 12b-2 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”); therefore, pursuant to Item 301(c) of Regulation S-K, we are not required to provide the information required by this Item.

Item 4. Controls and Procedures

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures, as defined in Rule 13a-15(e) under the Exchange Act. Based on that evaluation as of June 30, 2022, our Chief Executive Officer and Chief Financial Officer concluded that our Company’s disclosure controls and procedures were effective.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the period covered by this Quarterly Report on Form 10-Q that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations on Effectiveness of Controls

In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, cannot provide absolute assurance of achieving the desired control objectives. Our management recognizes that any control system, no matter how well designed and operated, is based upon certain judgments and assumptions and cannot provide absolute assurance that its objectives will be met. Similarly, an evaluation of controls

40

cannot provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been detected.

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Part II

Item 1. Legal Proceedings

See Note 13 for information regarding legal proceedings.

Item 1A. Risk Factors

Except as set forth below, there have been no material changes from the risk factors previously disclosed in the Company's Annual Report on Form 10-K for the year ended December 31, 2021.

The conflict in Ukraine could have an adverse effect on our business, results of operations, financial condition, and cash flow in the future.

The ongoing conflict in the Ukraine raises a host of potential risk factors to consider even though the Company does not conduct business in the Ukraine or Russia. Recent sanctions brought against Russia will impact the import, export, sale, and supply of goods and services with companies located in the U.S. and other regions. This will likely have a negative impact on the global economy and affect economic and capital markets. A downturn in the economy caused by these measures could result in a reduction in our revenue.

In light of the above described sanctions, we are aware of the possibilities of increased cyber-attacks. The U.S. Cyber-security and Infrastructure Security Agency (“CISA”) has recently issued a warning of the risk of Russian cyber-attacks on U.S. networks and critical infrastructure. While we do not currently believe that we are a likely target of a cyber-attack, we continue to be diligent in our controls over our information technology, systems and data. If we do fall victim to such attack, it could have an adverse effect on our business operations.

Our operations and financial results are subject to various other risks and uncertainties that could adversely affect our business, financial condition, results of operations, and trading price of our common stock. Please refer to our Annual Report on Form 10-K filed with the SEC on March 16, 2022 for further information concerning other risks and uncertainties that could negatively impact us.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

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Item 6. Exhibits

Exhibit	Description
3.1	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 July 26, 2016).
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 September 1, 2021).
10.1*	First Amendment and Waiver to the Amended and Restated Credit Agreement, dated as of May 5, 2022, by and among Limbach Facility Services LLC, Limbach Holdings LLC, the other Loan Parties party thereto, the Lenders party thereto and Wheaton Bank & Trust Company, N.A., as Administrative Agent and L/C Issuer, filed herewith as Exhibit 10.1.
10.2*	Limbach Holdings, Inc. 2022 Amended and Restated Omnibus Incentive Plan, filed herewith as Exhibit 10.2.
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.

*Filed herewith.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	LIMBACH HOLDINGS, INC.
	/s/ Charles A. Bacon, III
	Charles A. Bacon, III
	Chief Executive Officer
	(Principal Executive Officer)
	/s/ Jayme L. Brooks
	Jayme L. Brooks
	Chief Financial Officer
	(Principal Financial and Accounting Officer)
Date: August 9, 2022

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EX-10.1

EXHIBIT 10.1

FIRST AMENDMENT AND WAIVER TO AMENDED AND RESTATED CREDIT AGREEMENT

This FIRST AMENDMENT AND WAIVER TO AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”), dated as of May 5, 2022 (the “Effective Date”), is by and among LIMBACH FACILITY SERVICES LLC, a Delaware limited liability company (“Borrower”), LIMBACH HOLDINGS LLC, a Delaware limited liability company (“Intermediate Holdco”), the other persons designated as “Loan Parties” in the Credit Agreement (as defined below), the Lenders (as defined below) party hereto, and WHEATON BANK & TRUST COMPANY, N.A., a Subsidiary of Wintrust Financial Corporation, as Agent.

RECITALS

A.    Borrower, the other persons designated as “Loan Parties” from time to time party thereto, the lenders from time to time party thereto (collectively, the “Lenders” and each individually a “Lender”) and Agent are party to that certain Amended and Restated Credit Agreement, dated as of December 2, 2021 (as amended hereby and as it may be further amended, restated, amended and restated, supplemented or otherwise modified from time to time, the “Credit Agreement”);

B.    Pursuant to the Credit Agreement, Lenders made and committed to make certain loans to Borrower as follows: (i) a term loan in an aggregate principal amount equal to Thirty Five Million Five Hundred Thousand and 00/100 Dollars ($35,500,000.00) (“the “Term Loan”) and (ii) a revolving credit facility with an aggregate commitment equal to Twenty Five Million and 00/100 Dollars ($25,000,000.00) the “Revolving Loan” and collectively with the Term Loan, the “Loans”);

C.    Borrower has advised Administrative Agent it has not entered into a fully executed authenticated control agreement with Truist in accordance with section 1 of Schedule 6.28 of the Credit Agreement (“Depository Account Event”);

D.    Borrower has requested, and the Lenders have agreed to, among other things (i) waive the Depository Account Event; (ii) amend the definition of Total Funded Debt; (iii) amend the definition of EBITDA; and (iv) to make such other amendments and modifications to the Credit Agreement as described herein; and

E.    The Lenders are willing to agree to amend and modify the Credit Agreement as herein provided, in each case, subject to the and on the terms and conditions set forth herein.

NOW, THEREFORE, in consideration of the premises herein contained and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties, intending to be legally bound, agree as follows:

AGREEMENTS:

1.Definitions. All capitalized undefined terms used in this Amendment (including without limitation, in the Recitals hereto) shall have the meanings assigned thereto in the Credit Agreement, as amended hereby.

2.Waiver. Agent and the Lenders, subject to the satisfaction of the conditions precedent set forth in Section 4 of this Amendment and in reliance on the representations and warranties set forth in Section 5 of this Amendment, hereby waive the Depository Account Event; provided, however, the waiver provided in this Section 2 does not (a) consent to or waive any other Default or Event of Default, or (b) otherwise amend, waive or modify any provision, in any respect, of the Credit Agreement and the Loan Documents, except as otherwise specifically provided for hereunder. Further, the conditional waiver set forth in this Section 2 is also expressly conditioned upon (i) Jake Marshall, LLC and Coating

Solutions, LLC causing each of their operating accounts including all depository and remittance accounts (but excluding any Excluded Deposit Accounts) to be maintained with the Administrative Agent on or prior to July 31, 2022.

3.Amendments. In reliance on the representations and warranties set forth in Section 5 of this Amendment and subject to the satisfaction of the conditions precedent set forth in Section 4 of this Amendment, the Credit Agreement is hereby amended as follows:

(a)The definition of “EBITDA” in Section 1.1,“Definitions,” of the Credit Agreement is amended and restated as follows:

“EBITDA” means, with reference to any period, Net Income for such period plus, without duplication, the sum of all amounts deducted in arriving at such Net Income amount in respect of (a) Interest Expense for such period; (b) federal, state, and local income taxes for such period; (c) depreciation of fixed assets and amortization of intangible assets for such period; (d) non-cash charges including, (i) stock based compensation expenses, (ii) loss on extinguishment of Indebtedness under the Existing Credit Agreements or the Original Credit Agreement, (iii) change in fair value of warrants, or (iv) hedging obligations; (e) transaction expenses paid on or before that date occurring six months after the Original Closing Date in connection with the transactions contemplated by the Loan Documents or Original Credit Agreement in an aggregate amount not to exceed $500,000; (f) non-recurring costs, fees, expenses and charges related to any Permitted Acquisition, Investments permitted under Section 6.14, or Equity Issuance (in each case, whether or not consummated) in an aggregate amount not to exceed (i) with regard to issuance costs in connection with any Equity Issuance, $1,000,000, (ii) with regard to any other such event such costs, fees and expenses in an amount not to exceed $150,000 for any such individual action or $300,000 in any consecutive twelve (12) month period; (g) restructuring (including lease termination fees) and severance expenses in an amount not to exceed $250,000 in any consecutive twelve (12) month period; (h) legal expenses related to pursuing claim recoveries for Legacy Claims in an amount not to exceed $250,000 in any consecutive twelve (12) month period; (i) transaction expenses paid on or before that date occurring nine months after the Restatement Effective Date in connection with the Jake Marshall Acquisition and this Amendment and Restatement of the Original Credit Agreement in an aggregate amount not to exceed $1,100,000; (j) any costs incurred (including prepayment premiums) paid in connection with the repayment in full of the obligations outstanding under the Existing Credit Agreements; (k) restructuring charges and lease breakage costs in an aggregate amount not to exceed $3,920,000 incurred on or before December 31, 2022; and (l) other addbacks approved by the Required Lenders in its sole discretion, minus, without duplication and to the extent reflected as a gain or otherwise included in the calculation of Net Income for such period, non-cash gains (for the avoidance of doubt, in connection with any Pro Forma calculation with regard to the Jake Marshall Acquisition, any income attributable to any PPP loan or the Employee Retention Credit shall be treated as non-cash gains for any calculation of EBITDA).

(b)The definition of “Disposition” in Section 1.1 “Definitions,” of the Credit Agreement is amended and restated as follows:

“Disposition” means the sale, lease, conveyance or other disposition of Property, other than sales or other dispositions expressly permitted under Sections 6.13(a), (c), (d), (e), (h), (i) and (j).

(c)The definition of “Excess Cash Flow” in Section 1.1 “Definitions,” of the Credit Agreement is amended and restated as follows:

    2

“Excess Cash Flow” means, with respect to any period, the amount (if any) by which (a) EBITDA (without giving effect to any pro forma adjustments made pursuant to the definition of Net Income) during such period exceeds (b) the sum (without duplication) of (i) the aggregate amount of all scheduled payments of principal on debt (including the Term Loans) actually paid in cash during such period, plus (ii) the aggregate amount of Capital Expenditures paid in cash during such period and not financed with proceeds of Indebtedness (but excluding credit extended under the Revolving Loan), plus (iii) the aggregate amount of all federal, state and local taxes paid in cash with respect to such period, plus (iv) the aggregate amount of Interest Expense for such period paid in cash, plus (v) the cash portion of Restricted Payments of the type referred to in Section 6.15 actually made for such period, including Tax Distributions, to the extent permitted to be made under the Loan Documents plus (vi) any costs incurred (including prepayment premiums) and paid in connection with the repayment in full of the obligations outstanding under the Existing Credit Agreements plus (vii) amounts added back to EBITDA pursuant to clauses (f), (g), (h), (i) and (k) of the definition thereof, plus (viii) cash payments actually made in such period in respect of social security taxes that had been deferred in accordance with the CARES Act.

(d)The definition of “Total Funded Debt” in Section 1.1,“Definitions,” of the Credit Agreement is amended and restated as follows:

“Total Funded Debt” means, at any time the same is to be determined, for Parent and its Subsidiaries on a consolidated basis, the sum (but without duplication) of: (a) the outstanding principal amount of all obligations, whether current or long-term, for borrowed money (including Obligations hereunder) and all obligations evidenced by bonds, debentures, notes, loan agreements or other similar instruments; (b) the aggregate amount of Capitalized Lease Obligations (excluding Capitalized Lease Obligations for real estate approved by each Lender in its sole discretion); (c) the maximum amount available to be drawn (less any amount of cash collateral in respect of such maximum amount) under issued and outstanding letters of credit (including standby and commercial), bankers’ acceptances, bank guaranties, and similar instruments (other than any premiums payable under the Bonding Agreements, unless not paid when due); (d) all Guarantees with respect to outstanding Indebtedness of the types specified in clauses (a) through (c) above; and (e) all Indebtedness of the types referred to in clauses (a) through (d) above of any partnership or joint venture (other than a joint venture that is itself a corporation or limited liability company) in which the Borrower or a Subsidiary is a general partner or joint venturer, unless such Indebtedness is expressly made non-recourse to the Borrower or such Subsidiary.

(e)Section 6.13, “Consolidation, Merger and Sale of Assets” of the Credit Agreement is amended to delete “and” after clause (h), insert “and” after clause (i) and insert a new clause (j) to read as follows:

(j)    the sale and leaseback of real property approved by each Lender in its sole discretion.

4.Conditions to Effectiveness. The agreement by the Administrative Agent and the Lenders to amend the Credit Agreement in the manner set forth herein is subject to satisfaction of, and expressly conditioned upon, all of the following conditions precedent (the “First Amendment Effective Date”:

(a)This Amendment. The Administrative Agent shall have received counterparts of this Amendment, duly executed by the Borrower and each Lender, and acknowledged by each of the Guarantors.

    3

(b)Corporate Documents. The Administrative Agent shall have received all information and copies of all documents, including records of requisite corporate or limited liability company action and proceedings of the Borrower which the Administrative Agent may have requested in connection therewith, such documents to be certified by appropriate corporate officers or Governmental Authority.

(c)Other Documents. The Administrative Agent shall have received any other documents or instruments reasonably requested by the Administrative Agent in connection with the execution of this Amendment.

(d)Fees and Expenses. Borrower shall have paid to the Administrative Agent, for the ratable account of the Lenders, an amendment fee in an amount equal to $25,000 and all fees and expenses required to be paid in connection herewith, and all fees and expenses invoiced on or before the date hereof, shall have been paid in full in cash or will be paid on the date hereof.

5.Representations and Warranties. The Borrower represents and warrants that (a) it has the corporate power and authority to make, deliver and perform this Amendment, (b) it has taken all necessary corporate or other action to authorize the execution, delivery and performance of this Amendment, (c) this Amendment has been duly executed and delivered on behalf of the Borrower, (d) this Amendment constitutes a legal, valid and binding obligation of the Borrower, enforceable against the Borrower in accordance with its terms, except as enforceability may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the enforcement of creditors' rights generally and by general equitable principles, (e) each of the representations and warranties made by the Borrower in or pursuant to the Loan Documents is true and correct in all material respects on and as of the date hereof as if made on and as of the date hereof, except for any representation and warranty made as of an earlier date, which representation and warranty shall remain true and correct as of such earlier date; provided that any representation or warranty that is qualified as to “materiality”, “Material Adverse Effect” or similar language shall be true and correct (after giving effect to any qualification therein) in all respects on such respective dates, (f) it has no defenses, setoffs, rights of recoupment, counterclaims or claims of any nature whatsoever with respect to the Loan Documents or the Obligations due thereunder, and to the extent any such defenses, setoffs, rights of recoupment, counterclaims or claims may exist, the same are hereby expressly waived, released and discharged, and (g) no Default or Event of Default has occurred and is continuing after giving effect hereto.

6.Reaffirmation of Covenants. By its execution hereof, Borrower hereby expressly (a) acknowledges and agrees to the terms and conditions of this Amendment, (b) reaffirms all of its respective covenants, representations, warranties and other obligations set forth in the Credit Agreement and the other Loan Documents to which it is a party, (c) ratifies and confirms all security interests granted to the Administrative Agent and the Lenders under the Loan Documents, and (d) acknowledges that its respective covenants, representations, warranties and other obligations set forth in the Credit Agreement and the other Loan Documents to which it is a party remain in full force and effect.

7.Costs and Expenses. The Borrower agrees to pay in accordance with Section 10.12 of the Credit Agreement all reasonable costs and expenses of the Administrative Agent and the Lenders in connection with the preparation, execution and delivery of this Amendment and the other instruments and documents to be delivered hereunder, including, without limitation, the reasonable fees and out-of-pocket expenses of counsel for the Administrative Agent with respect thereto and with respect to advising Lenders as to their rights and responsibilities hereunder and thereunder.

8.Execution in Counterparts. This Amendment may be executed by one or more of the parties to this Amendment on any number of separate counterparts, and all of said counterparts taken together shall be deemed to constitute one and the same instrument. Delivery of an executed signature page of this Amendment by facsimile transmission shall be effective as delivery of a manually executed counterpart hereof.

    4

9.Entire Agreement. This Amendment is the entire agreement, and supersedes any prior agreements and contemporaneous oral agreements, of the parties concerning its subject matter.

10.Full Force and Effect; Inconsistency. Except as herein modified, the terms, conditions and covenants of the Loan Documents shall remain unchanged and otherwise in full force and effect. In the event of an inconsistency between this Amendment and the Loan Documents, the terms herein shall control.

11.Laws of Illinois. The validity, interpretation and enforcement of this Amendment shall be governed by the internal laws of the State of Illinois but excluding any principles of conflicts of law or other rule of law that would cause the application of the law of any juris diction other than the laws of the State of Illinois.

12.Successors and Assigns. This Amendment shall be binding on and inure to the benefit of the parties and their respective heirs, beneficiaries, successors and permitted assigns.

13.Waiver of Jury Trial; Arbitration. EACH PARTY HERETO HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AMENDMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY).EACH PARTY HERETO (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PERSON HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PERSON WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER AND CONSENT AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION.

[SIGNATURE PAGE FOLLOWS]

    5

IN WITNESS WHEREOF, this Amendment has been executed on the date first written above, to be effective as of the Effective Date.

BORROWER:

LIMBACH FACILITY SERVICES LLC,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer        

GUARANTORS:

LIMBACH HOLDINGS LLC,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer        

LIMBACH COMPANY LLC,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer        

HARPER LIMBACH LLC,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer        

LIMBACH COMPANY LP,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer    

HARPER LIMBACH CONSTRUCTION LLC,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer    

JAKE MARSHALL, LLC,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer

[Signature Page to First Amendment]

COATING SOLUTIONS, LLC,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer

LIMBACH HOLDINGS LLC,

By: /s/ Jayme Brooks            

Name: Jayme Brooks    

Title: Chief Financial Officer

[Signature Page to First Amendment]

WHEATON BANK & TRUST COMPANY, N.A., as a Lender, as L/C Issuer and as Administrative Agent,

By: /s/ David Nelson    

Name: David Nelson

Title: Vice President

[Signature Page to First Amendment]

M&T BANK,
as a Lender

By: /s/ Robert J. Tiskus    

Name: Robert J. Tiskus    

Title: Vice President

[Signature Page to First Amendment]

BANK OF THE WEST,
as a Lender

By: /s/ Peter Thursby    

Name: Peter Thursby

Title: Managing Director

[Signature Page to First Amendment]

OLD SECOND NATIONAL BANK AS SUCCESSOR BY MERGER TO WEST SUBURBAN BANK,
as a Lender

By: /s/ Jason G. Fels    

Name: Jason G. Fels

Title: Vice President

[Signature Page to First Amendment]

EX-10.2

Exhibit 10.2

LIMBACH HOLDINGS, INC. AMENDED AND RESTATED OMNIBUS INCENTIVE PLAN

Section 1. General.

The name of the Plan is the Limbach Holdings, Inc. Amended and Restated Omnibus Incentive Plan (the “Plan”). The Plan intends to: (a) encourage the profitability and growth of the Company through short-term and long-term incentives that are consistent with the Company’s objectives; (b) give Participants an incentive for excellence in individual performance; (c) promote teamwork among Participants; and (d) give the Company a significant advantage in attracting and retaining key Employees, Directors and Consultants. To accomplish such purposes, the Plan provides that the Company may grant Options, Stock Appreciation Rights, Restricted Shares, Restricted Stock Units, Performance-Based Awards (including performance-based Restricted Shares and Restricted Stock Units), Other Share Based Awards, Other Cash-Based Awards or any combination of the foregoing.

Section 2. Definitions.

For purposes of the Plan, the following terms shall be defined as set forth below:

(a) “Administrator” means the Board, or, if and to the extent the Board does not administer the Plan, the Committee in accordance with Section 3 of the Plan.

(b) “Affiliate” means a Person that directly, or indirectly through one or more intermediaries, controls, or is controlled by, or is under common control with, the Person specified. An entity shall be deemed an Affiliate of the Company for purposes of this definition only for such periods as the requisite ownership or control relationship is maintained.

(c) “Approval Date” means the date on which the Plan is approved by the Company’s stockholders.

(d) “Articles of Incorporation” means the articles of incorporation of the Company, as amended and/or restated from time to time.

(e) “Automatic Exercise Date” means, with respect to an Option or a Stock Appreciation Right, the last business day of the applicable term of the Option pursuant to Section 7(d) or the Stock Appreciation Right pursuant to Section 8(f).

(f) “Award” means any Option, Stock Appreciation Right, Restricted Share, Restricted Stock Unit, Performance-Based Award, Other Share Based Award or Other Cash-Based Award granted under the Plan.

(g) “Award Agreement” means any written agreement, contract or other instrument or document evidencing an Award. Evidence of an Award may be in written or electronic form, may be limited to notation on the books and records of the Company and, with the approval of the Board, need not be signed by a representative of the Company or a Participant. Any Shares that become deliverable to the Participant pursuant to the Plan may be issued in certificate form in the name of the Participant or in book-entry form in the name of the Participant.

(h) “Bylaws” means the bylaws of the Company, as may be amended and/or restated from time to time.

(i) “Beneficial Owner” (or any variant thereof) has the meaning defined in Rule 13d-3 under the Exchange Act.

(j) “Board” means the Board of Directors of the Company.

(k) “Cause” shall have the meaning assigned to such term in any Company or Affiliate employment or severance agreement or Award Agreement with the Participant or, if no such agreement exists or the agreement does not define “Cause,” Cause means (i) the refusal or neglect of the Participant to perform substantially his or her employment related duties, (ii) the Participant’s personal dishonesty, incompetence, willful misconduct or breach of fiduciary duty, (iii) the Participant’s indictment for, conviction of or entering a plea of guilty or nolo contendere to a crime constituting a felony or his or her willful violation of any applicable law (other than a traffic violation or other offense or violation outside of the course of employment which in no way adversely affects the Company and its

1

Exhibit 10.2

Subsidiaries or their reputation or the ability of the Participant to perform his or her employment related duties or to represent the Company or any Subsidiary of the Company that employs such Participant), (iv) the Participant’s failure to reasonably cooperate, following a request to do so by the Company, in any internal or governmental investigation of the Company or any of its Subsidiaries or (v) the Participant’s material breach of any written covenant or agreement with the Company or any of its Subsidiaries not to disclose any information pertaining to the Company or such Subsidiary or not to compete or interfere with the Company or such Subsidiary.

(l) “Change in Capitalization” means any (i) merger, consolidation, reclassification, recapitalization, spin-off, spin-out, repurchase or other reorganization or corporate transaction or event, (ii) extraordinary dividend (whether in the form of cash, Common Stock or other property), stock split or reverse stock split, (iii) combination or exchange of shares, (iv) other change in corporate structure or (v) payment of any other distribution, which, in any such case, the Administrator determines, in its sole discretion, affects the Shares such that an adjustment pursuant to Section 5 of the Plan is appropriate.

(m) “Change in Control” shall be deemed to have occurred if an event set forth in any one of the following paragraphs shall have occurred:

(i) any Person, other than (A) 1347 Investors LLC, EarlyBirdCapital, Inc., FdG HVAC LLC, Limbach Management Holding Company LLC, Marathon Special Opportunity Master Fund, Ltd. or Charles A. Bacon III or their respective Affiliates and successors, or (B) the Company or a trustee or other fiduciary holding securities under an employee benefit plan of the Company, is or becomes the Beneficial Owner, directly or indirectly, of securities of the Company representing fifty percent (50%) or more of the combined voting power of the Company’s then outstanding securities, excluding any Person who becomes such a Beneficial Owner in connection with a transaction described in clause (A) of paragraph (iii) below; or

(ii) the following individuals cease for any reason to constitute a majority of the number of Directors then serving on the Board: individuals who, during any period of two (2) consecutive years, constitute the Board and any new Director (other than a Director whose initial assumption of office is in connection with an actual or threatened election contest, including, but not limited to, a consent solicitation, relating to the election of Directors of the Company) whose appointment or election by the Board or nomination for election by the Company’s stockholders was approved or recommended by a vote of at least two-thirds (2∕3) of the Directors then still in office who either were Directors at the beginning of the two (2) year period or whose appointment, election or nomination for election was previously so approved or recommended; or

(iii) there is consummated a merger or consolidation of the Company or any Subsidiary thereof with any other corporation, other than a merger or consolidation (A) that results in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least fifty percent (50%) of the combined voting power of the voting securities of the Company (or such surviving entity) outstanding immediately after such merger or consolidation, and (B) immediately following which the individuals who comprise the Board immediately prior thereto constitute at least a majority of the Board of the entity surviving such merger or consolidation or, if the Company or the entity surviving such merger is then a subsidiary, the ultimate parent thereof; or

(iv) the stockholders of the Company approve a plan of complete liquidation or dissolution of the Company or there is consummated an agreement for the sale or disposition by the Company of all or substantially all of the Company’s and all of the Company’s Subsidiaries’ assets (determined on a consolidated basis), other than (A) a sale or disposition by the Company of all or substantially all of the Company’s assets to an entity, at least fifty percent (50%) of the combined voting power of the voting securities of which are owned by stockholders of the Company following the completion of such transaction in substantially the same proportions as their ownership of the Company immediately prior to such sale or (B) a sale or disposition of all or substantially all of the Company’s assets immediately following which the individuals who comprise the Board immediately prior thereto constitute at

2

Exhibit 10.2

least a majority of the board of directors of the entity to which such assets are sold or disposed or, if such entity is a subsidiary, the ultimate parent thereof.

For each Award that constitutes deferred compensation under Code Section 409A, a transaction shall constitute a Change in Control only if it also constitutes a “change in control event” under the regulations under Code Section 409A.

Notwithstanding the foregoing, a “Change in Control” shall not be deemed to have occurred by virtue of the consummation of any transaction or series of integrated transactions immediately following which the holders of Common Stock immediately prior to such transaction or series of transactions continue to have substantially the same proportionate ownership in an entity which owns all or substantially all of the assets of the Company immediately following such transaction or series of.

(n) “Change in Control Price” shall have the meaning set forth in Section 12 of the Plan.

(o) “Code” means the Internal Revenue Code of 1986, as amended from time to time, or any successor thereto.

(p) “Committee” means any committee or subcommittee the Board may appoint to administer the Plan. Subject to the discretion of the Board, the Committee shall be composed entirely of individuals who meet the qualifications of a “non-employee director” within the meaning of Rule 16b-3 under the Exchange Act and any other qualifications required by the applicable stock exchange on which the Common Stock is traded. If at any time or to any extent the Board shall not administer the Plan, then the functions of the Administrator specified in the Plan shall be exercised by the Committee. Except as otherwise provided in the Company’s Articles of Incorporation or Bylaws, any action of the Committee with respect to the administration of the Plan shall be taken by a majority vote at a meeting at which a quorum is duly constituted or unanimous written consent of the Committee’s members.

(q) “Common Stock” means the common stock, par value $0.0001 per share, of the Company.

(r) “Company” means Limbach Holdings, Inc., a Delaware corporation (or any successor corporation, except as the term “Company” is used in the definition of  “Change in Control” above).

(s) “Consultant” means any current or prospective consultant or independent contractor of the Company or an Affiliate thereof, in each case, who is not an Employee, Executive Officer or non-employee Director.

(t) “Disability” shall have the meaning assigned to such term in any individual employment or severance agreement or Award Agreement with the Participant or, if no such agreement exists or the agreement does not define “Disability,” Disability means, with respect to any Participant, that such Participant (i) is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, or (ii) is, by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, receiving income replacement benefits for a period of not less than three (3) months under an accident and health plan covering Employees of the Company or an Affiliate thereof.

(u) “Director” means any individual who is a member of the Board on or after the Effective Date.

(v) “Effective Date” shall have the meaning set forth in Section 20 of the Plan.

(w) “Eligible Recipient” means: (i) an Employee; (ii) a non-employee Director; or (iii) a Consultant, in each case, who has been selected as an eligible recipient under the Plan by the Administrator; provided, that any Awards granted prior to the date an Eligible Recipient first performs services for the Company or an Affiliate thereof will not become vested or exercisable, and no Shares shall be issued or other payment made to such Eligible Recipient with respect to such Awards, prior to the date on which such Eligible Recipient first performs services for the Company or an Affiliate thereof. Notwithstanding the foregoing, to the extent required to avoid the imposition of additional taxes under Code Section 409A, “Eligible Recipient” means: an (1) Employee; (2) a non-employee

3

Exhibit 10.2

Director; or (3) a Consultant, in each case, of the Company or a Subsidiary thereof, who has been selected as an eligible recipient under the Plan by the Administrator.

(x) “Employee” shall mean any current or prospective employee of the Company or an Affiliate thereof, as described in Treasury Regulation Section 1.421-1(h), including an Executive Officer or Director who is also treated as an employee.

(y) “Exchange Act” means the Securities Exchange Act of 1934, as amended from time to time.

(z) “Executive Officer” means each Participant who is an executive officer (within the meaning of Rule 3b-7 under the Exchange Act) of the Company.

(aa) “Exercise Price” means, with respect to any Award under which the holder may purchase Shares, the price per share at which a holder of such Award granted hereunder may purchase Shares issuable upon exercise of such Award.

(bb) “Fair Market Value” as of a particular date shall mean: (i) if the Common Stock is admitted to trading on a national securities exchange, the fair market value of a Share on any date shall be the closing sale price reported for such share on such exchange on such date or, if no sale was reported on such date, on the last day preceding such date on which a sale was reported; (ii) if the Shares are not then listed on a national securities exchange, the average of the highest reported bid and lowest reported asked prices for the Shares as reported by the National Association of Securities Dealers, Inc. Automated Quotations System for the last preceding date on which there was a sale of such stock in such market; or (iii) whether or not the Shares are then listed on a national securities exchange or traded in an over-the-counter market or the value of such Shares is not otherwise determinable, such value as determined by the Committee in good faith and in a manner not inconsistent with the regulations under Code Section 409A.

(cc) “Free Standing Rights” shall have the meaning set forth in Section 8(a) of the Plan.

(dd) “Incentive Stock Option” means an Option that is intended to satisfy the requirements applicable to and to be treated as an “incentive stock option” described in Code Section 422.

(ee) “Nonqualified Stock Option” means an Option that is not intended to be an Incentive Stock Option.

(ff) “Option” means an option to purchase Shares granted pursuant to Section 7 of the Plan.

(gg) “Other Cash-Based Award” means a cash Award granted to a Participant under Section 11 of the Plan, including cash awarded as a bonus or upon the attainment of Performance Goals or otherwise as permitted under the Plan.

(hh) “Other Share Based Award” means a right or other interest granted to a Participant under the Plan that may be denominated or payable in, valued in whole or in part by reference to, or otherwise based on or related to, Common Stock, including, but not limited to, unrestricted Shares or dividend equivalents, each of which may be subject to the attainment of Performance Goals or a period of continued employment or other terms or conditions as permitted under the Plan.

(ii) “Participant” means any Eligible Recipient selected by the Administrator, pursuant to the Administrator’s authority provided for in Section 3 of the Plan, to receive grants of Options, Stock Appreciation Rights, Restricted Shares, Restricted Stock Units, Other Share Based Awards, Other Cash-Based Awards or any combination of the foregoing, and, upon his or her death, his or her successors, heirs, executors and administrators, as the case may be, solely with respect to any Awards outstanding at the date of the Eligible Recipient’s death.

(jj) “Performance-Based Award” means any Award granted under the Plan that is subject to one or more Performance Goals. Any dividends or dividend equivalents payable or credited to a Participant with respect to any unvested Performance-Based Award shall be subject to the same Performance Goals as the Shares or units underlying the Performance-Based Award.

(kk) “Performance Goals” means performance goals based on one or more of the following criteria: (i) earnings before interest and taxes; (ii) earnings before interest, taxes, depreciation and amortization; (iii) net operating profit after tax; (iv) cash flow; (v) revenue; (vi) net revenues; (vii) sales; (viii) days sales outstanding; (ix) scrap rates; (x) income; (xi) net income; (xii) operating income; (xiii) net operating income; (xiv) operating margin; (xv) earnings;

4

Exhibit 10.2

(xvi) earnings per share; (xvii) return on equity; (xviii) return on investment; (xix) return on capital; (xx) return on assets; (xxi) return on net assets; (xxii) total shareholder return; (xxiii) economic profit; (xxiv) market share; (xxv) appreciation in the fair market value, book value or other measure of value of the Company’s Common Stock; (xxvi) expense or cost control; (xxvii) working capital; (xxviii) volume or production; (xxix) new products; (xxx) customer satisfaction; (xxxi) brand development; (xxxii) employee retention or employee turnover; (xxxiii) employee satisfaction or engagement; (xxxiv) environmental, health or other safety goals; (xxxv) individual performance; (xxxvi) strategic objective milestones; (xxxvii) days inventory outstanding; (xxxviii) any other criteria specified by the Administrator in its sole discretion; and (xxxix) any combination of, or a specified increase in, any of the foregoing. Where applicable, the Performance Goals may be expressed in terms of attaining a specified level of the particular criteria or the attainment of a percentage increase or decrease in the particular criteria, and may be applied to one or more of the Company or an Affiliate thereof, or a division or strategic business unit of the Company, or may be applied to the performance of the Company relative to a market index, a group of other companies or a combination thereof, all as determined by the Committee. The Performance Goals may include a threshold level of performance below which no payment shall be made (or no vesting shall occur), levels of performance at which specified payments shall be made (or specified vesting shall occur), and a maximum level of performance above which no additional payment shall be made (or at which full vesting shall occur). At the time such an Award is granted, the Committee may specify any reasonable definition of the Performance Goals it uses. Such definitions may provide for equitable adjustments to the Performance Goals in recognition of unusual or non-recurring events affecting the Company or an Affiliate thereof or the financial statements of the Company or an Affiliate thereof, in response to changes in applicable laws or regulations, or to account for items of gain, loss or expense determined to be unusual in nature, infrequent in occurrence or unusual in nature and infrequent in occurrence or related to the disposal of a segment of a business or related to a change in accounting principles.

(ll) “Person” shall have the meaning given in Section 3(a)(9) of the Exchange Act, as modified and used in Sections 13(d) and 14(d) thereof, except that such term shall not include (i) the Company or any Subsidiary thereof, (ii) a trustee or other fiduciary holding securities under an employee benefit plan of the Company or any Subsidiary thereof, (iii) an underwriter temporarily holding securities pursuant to an offering of such securities, or (iv) a corporation owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company.

(mm) “Related Rights” shall have the meaning set forth in Section 8(a) of the Plan.

(nn) “Restricted Shares” means an Award of Shares granted pursuant to Section 9 of the Plan subject to certain restrictions that lapse at the end of a specified period or periods.

(oo) “Restricted Stock Unit” means a notional account established pursuant to an Award granted to a Participant, as described in Section 10 of the Plan, that is (i) valued solely by reference to Shares, (ii) subject to restrictions specified in the Award Agreement, and (iii) payable in cash or in Shares (as specified in the Award Agreement). The Restricted Stock Units awarded to the Participant will vest according to the time-based criteria or Performance Goals criteria, and vested Restricted Stock Units will be settled at the time(s), specified in the Award Agreement.

(pp) “Restricted Period” means the period of time determined by the Administrator during which an Award or a portion thereof is subject to restrictions or, as applicable, the period of time within which performance is measured for purposes of determining whether an Award has been earned.

(qq) “Retirement” means a termination of a Participant’s employment, other than for Cause and other than by reason of death or Disability, on or after the attainment of age 65.

(rr) “Rule 16b-3” shall have the meaning set forth in Section 3(a) of the Plan.

(ss) “Shares” means shares of Common Stock reserved for issuance under the Plan, as adjusted pursuant to the Plan, and any successor (pursuant to a merger, consolidation or other reorganization) security.

5

Exhibit 10.2

(tt) “Stock Appreciation Right” means the right pursuant to an Award granted under Section 8 of the Plan to receive an amount equal to the excess, if any, of  (i) the aggregate Fair Market Value, as of the date such Award or portion thereof is surrendered, of the Shares covered by such Award or such portion thereof, over (ii) the aggregate Exercise Price of such Award or such portion thereof.

(uu) “Subsidiary” means, with respect to any Person, as of any date of determination, any other Person as to which such first Person owns or otherwise controls, directly or indirectly, more than fifty percent (50%) of the voting shares or other similar interests or a sole general partner interest or managing member or similar interest of such other Person. An entity shall be deemed a Subsidiary of the Company for purposes of this definition only for such periods as the requisite ownership or control relationship is maintained. Notwithstanding the foregoing, in the case of an Incentive Stock Option or any determination relating to an Incentive Stock Option, “Subsidiary” means a corporation that is a subsidiary of the Company within the meaning of Code Section 424(f).

(vv) “Substitute Award” shall mean an Award granted under the Plan upon the assumption of, or in substitution for, outstanding equity awards granted by a company or other entity in connection with a corporate transaction, such as a merger, combination, consolidation, or acquisition of property or stock; provided, however, that in no event shall the term “Substitute Award” be construed to refer to an award made in connection with the cancellation and repricing of an Option or Stock Appreciation Right.

Section 3. Administration.

(a) The Plan shall be administered by the Administrator in accordance with the requirements of Rule 16b-3 under the Exchange Act (“Rule 16b-3”), to the extent applicable.

(b) Pursuant to the terms of the Plan, the Administrator, subject, in the case of any Committee, to any restrictions on the authority delegated to it by the Board, shall have the power and authority, without limitation:

(i) to select those Eligible Recipients who shall be Participants;

(ii) to determine whether and to what extent Options, Stock Appreciation Rights, Restricted Shares, Restricted Stock Units, Other Share Based Awards, Other Cash-Based Awards or a combination of any of the foregoing, are to be granted hereunder to Participants;

(iii) to determine the number of Shares to be covered by each Award granted hereunder;

(iv) to determine the terms and conditions, not inconsistent with the terms of the Plan, of each Award granted hereunder, including, but not limited to, (A) the restrictions applicable to Restricted Shares and Restricted Stock Units and the conditions under which restrictions applicable to such Restricted Shares and Restricted Stock Units shall lapse, (B) the Performance Goals and periods applicable to Awards, if any, (C) the Exercise Price of each Award, (D) the vesting schedule applicable to each Award, (E) the number of Shares subject to each Award and (F) subject to the requirements of Code Section 409A (to the extent applicable), any amendments to the terms and conditions of outstanding Awards, including, but not limited to, extending the exercise period of such Awards and accelerating the vesting schedule of such Awards;

(v) to determine the terms and conditions, not inconsistent with the terms of the Plan, which shall govern all written instruments evidencing Options, Stock Appreciation Rights, Restricted Shares, Restricted Stock Units or Other Share Based Awards, Other Cash-Based Awards or any combination of the foregoing granted hereunder;

(vi) to determine the Fair Market Value;

(vii) to determine the duration and purpose of leaves of absence which may be granted to a Participant without constituting termination of the Participant’s employment for purposes of Awards granted under the Plan;

(viii) to adopt, alter and repeal such administrative rules, guidelines and practices governing the Plan as it shall from time to time deem advisable; and

(ix) to construe and interpret the terms and provisions of the Plan and any Award issued under the Plan (and any Award Agreement relating thereto), and to otherwise supervise the administration of the Plan and to exercise all

6

Exhibit 10.2

powers and authorities either specifically granted under the Plan or necessary and advisable in the administration of the Plan.

(c) All decisions made by the Administrator pursuant to the provisions of the Plan shall be final, conclusive and binding on all persons, including the Company and the Participants. No member of the Board or the Committee, or any officer or employee of the Company or any Subsidiary thereof acting on behalf of the Board or the Committee, shall be personally liable for any action, omission, determination, or interpretation taken or made in good faith with respect to the Plan, and all members of the Board or the Committee and each and any officer or employee of the Company and of any Subsidiary thereof acting on their behalf shall, to the maximum extent permitted by law, be fully indemnified and protected by the Company in respect of any such action, omission, determination or interpretation.

Section 4. Shares Reserved for Issuance Under the Plan and Limitations on Awards.

(a) Subject to Section 5 of the Plan, the number of Shares that are reserved and available for issuance pursuant to Awards granted under the Plan is 2,600,000. The maximum number of Shares that may be issued pursuant to Options intended to be Incentive Stock Options is eight-hundred thousand (800,000).

(b) The aggregate Awards granted during any fiscal year to any Participant shall not exceed, subject to adjustment as provided in Section 5 of the Plan: (i) is four-hundred thousand (400,000) Shares subject to Options or Stock Appreciation Rights, (ii) is four-hundred thousand (400,000) Shares subject to Restricted Shares, Restricted Stock Units or Other Share Based Awards (other than Stock Appreciation Rights), and (iii) two million dollars ($2,000,000) with respect to Other Cash-Based Awards with a Restricted Period of one (1) year and five-hundred thousand dollars ($500,000) with respect to Other Cash-Based Awards with a Restricted Period greater than one (1) year. Notwithstanding the foregoing, the maximum number of Shares subject to Awards granted during any fiscal year to any non-employee Director, taken together with any cash fees paid to such non-employee Director during the fiscal year, shall not exceed five-hundred thousand dollars ($500,000) in total value (calculating the value of any such Awards based on the grant date Fair Market Value of such Awards for financial reporting purposes).

(c) Shares issued under the Plan may, in whole or in part, be authorized but unissued Shares or Shares that shall have been or may be reacquired by the Company in the open market, in private transactions or otherwise. Any Shares subject to an Award under the Plan that, after the Effective Date, are forfeited, canceled, settled or otherwise terminated without a distribution of Shares to a Participant will thereafter be deemed to be available for Awards. In applying the immediately preceding sentence, if  (i) Shares otherwise issuable or issued in respect of, or as part of, any Award are withheld to cover taxes or any applicable Exercise Price, such Shares shall be treated as having been issued under the Plan and shall not be available for issuance under the Plan, and (ii) any Share-settled Stock Appreciation Rights or Options are exercised, the aggregate number of Shares subject to such Stock Appreciation Rights or Options shall be deemed issued under the Plan and shall not be available for issuance under the Plan. In addition, Shares tendered to exercise outstanding Options or other Awards or to cover applicable taxes on any Awards shall not be available for issuance under the Plan.

(d) Except in the case of Substitute Awards granted pursuant to Section 4(e) and subject to the following sentence, Awards granted under the Plan shall be subject to a minimum vesting period of one (1) year. Notwithstanding the foregoing, (i) the Committee may provide that the vesting of an Award shall accelerate in the event of the Participant’s death, Disability, or Retirement, or the occurrence of a Change in Control, and (ii) the Committee may grant Awards covering five percent (5%) or fewer of the total number of Shares authorized under the Plan without respect to the above-described minimum vesting requirement. Notwithstanding the foregoing, with respect to Awards to non-employee Directors, the vesting of such Awards will be deemed to satisfy the one (1) year minimum vesting requirement to the extent that the Awards vest on the earlier of the one (1) year anniversary of the

7

Exhibit 10.2

date of grant and the next annual meeting of the Company’s stockholders that is at least fifty (50) weeks after the immediately preceding year’s annual meeting.

(e) Substitute Awards shall not reduce the Shares authorized for grant under the Plan. In the event that a company acquired by the Company or any Affiliate or with which the Company or any Affiliate combines has shares available under a pre-existing plan approved by stockholders and not adopted in contemplation of such acquisition or combination, the shares available for grant pursuant to the terms of such pre-existing plan (as adjusted, to the extent appropriate, using the exchange ratio or other adjustment or valuation ratio or formula used in such acquisition or combination to determine the consideration payable to the holders of common stock of the entities party to such acquisition or combination) may be used for Awards under the Plan and shall not reduce the Shares authorized for grant under the Plan; provided, that Awards using such available Shares shall not be made after the date awards or grants could have been made under the terms of the pre-existing plan, absent the acquisition or combination, and shall only be made to individuals who were not employed by or providing services to the Company or its Affiliates immediately prior to such acquisition or combination.

(f) In the event that the Company or an Affiliate thereof consummates a transaction described in Code Section 424(a) (e.g., the acquisition of property or stock from an unrelated corporation), persons who become Employees or Directors in account of such transaction may be granted Substitute Awards in substitution for awards granted by their former employer, and any such substitute Options or Stock Appreciation Rights may be granted with an Exercise Price less than the Fair Market Value of a Share on the grant date thereof; provided, however, the grant of such substitute Option or Stock Appreciation Right shall not constitute a “modification” as defined in Code Section 424(h)(3) and the applicable Treasury regulations.

Section 5. Equitable Adjustments.

In the event of any Change in Capitalization, an equitable substitution or proportionate adjustment shall be made, in each case, as may be determined by the Administrator, in its sole discretion, in (i) the aggregate number of Shares reserved for issuance under the Plan and the maximum number of Shares that may be subject to Awards granted to any Participant in any calendar or fiscal year, (ii) the kind, number and Exercise Price subject to outstanding Options and Stock Appreciation Rights granted under the Plan; provided, however, that any such substitution or adjustment with respect to Options and Stock Appreciation Rights shall occur in accordance with the requirements of Code Section 409A, and (iii) the kind, number and purchase price of Shares subject to outstanding Restricted Shares or Other Share Based Awards granted under the Plan, in each case as may be determined by the Administrator, in its sole discretion; provided, however, that any fractional Shares resulting from the adjustment shall be eliminated. Such other equitable substitutions or adjustments shall be made as may be determined by the Administrator, in its sole discretion. Without limiting the generality of the foregoing, in connection with a Change in Capitalization, the Administrator may provide, in its sole discretion, for the cancellation of any outstanding Award granted hereunder in exchange for payment in cash or other property having an aggregate Fair Market Value of the Shares covered by such Award, reduced by the aggregate Exercise Price or purchase price thereof, if any. Notwithstanding anything contained in the Plan to the contrary, any adjustment with respect to an Incentive Stock Option due to an adjustment or substitution described in this Section 5 shall comply with the rules of Code Section 424(a), and in no event shall any adjustment be made which would render any Incentive Stock Option granted hereunder to be disqualified as an incentive stock option for purposes of Code Section 422. The Administrator’s determinations pursuant to this Section 5 shall be final, binding and conclusive.

Section 6. Eligibility.

8

Exhibit 10.2

The Participants under the Plan shall be selected from time to time by the Administrator, in its sole discretion, from among Eligible Recipients.

Section 7. Options.

(a) General. The Committee may, in its sole discretion, grant Options to Participants. Solely with respect to Participants who are Employees, the Committee may grant Incentive Stock Options, Nonqualified Stock Options or a combination of both. With respect to all other Participants, the Committee may grant only Nonqualified Stock Options. Each Participant who is granted an Option shall enter into an Award Agreement with the Company, containing such terms and conditions as the Administrator shall determine, in its sole discretion, which Award Agreement shall specify whether the Option is an Incentive Stock Option or a Nonqualified Stock Option and shall set forth, among other things, the Exercise Price of the Option, the term of the Option and provisions regarding exercisability of the Option granted thereunder. The provisions of each Option need not be the same with respect to each Participant. More than one Option may be granted to the same Participant and be outstanding concurrently hereunder. Options granted under the Plan shall be subject to the terms and conditions set forth in this Section 7 and shall contain such additional terms and conditions, not inconsistent with the terms of the Plan, as the Administrator shall deem desirable and set forth in the applicable Award Agreement. The prospective recipient of an Option shall not have any rights with respect to such Award, unless and until such recipient has received an Award Agreement and, if required by the Administrator in the Award Agreement, executed and delivered a fully executed copy thereof to the Company, within a period of sixty (60) days (or such other period as the Administrator may specify) after the award date.

(b) Limits on Incentive Stock Options. If the Administrator grants Incentive Stock Options, then to the extent that the aggregate fair market value of Shares with respect to which Incentive Stock Options are exercisable for the first time by any individual during any calendar year (under all plans of the Company) exceeds $100,000, such Options will be treated as Nonqualified Stock Options to the extent required by Code Section 422.

(c) Exercise Price. The Exercise Price of Shares purchasable under an Option shall be determined by the Administrator in its sole discretion at the time of grant; provided, however, that (i) in no event shall the Exercise Price of an Option be less than one hundred percent (100%) of the Fair Market Value of the Common Stock on the date of grant, and (ii) no Incentive Stock Option granted to a ten percent (10%) stockholder of the Company’s Common Stock (within the meaning of Code Section 422(b)(6)) shall have an exercise price per share less than one-hundred ten percent (110%) of the Fair Market Value of a Share on such date.

(d) Option Term. The maximum term of each Option shall be fixed by the Administrator, but in no event shall (i) an Option be exercisable more than ten (10) years after the date such Option is granted, and (ii) an Incentive Stock Option granted to a ten percent (10%) stockholder of the Company’s Common Stock (within the meaning of Code Section 422(b)(6)) be exercisable more than five (5) years after the date such Option is granted. Each Option’s term is subject to earlier expiration pursuant to the applicable provisions in the Plan and the Award Agreement. Notwithstanding the foregoing, the Administrator shall have the authority to accelerate the exercisability of any outstanding Option at such time and under such circumstances as the Administrator, in its sole discretion, deems appropriate. Notwithstanding any contrary provision in this Plan (including without limitation Section 7(h)), if, on the date an outstanding Option would expire, the exercise of the Option, including by a “net exercise” or “cashless” exercise, would violate applicable securities laws or any insider trading policy maintained by the Company from time to time, the expiration date applicable to the Option will be extended, except to the extent such extension would violate Section 409A, to a date that is thirty (30) calendar days after the date the exercise of the Option would no longer violate applicable securities laws or any such insider trading policy.

9

Exhibit 10.2

(e) Exercisability. Each Option shall be exercisable at such time or times and subject to such terms and conditions, including the attainment of pre-established Performance Goals, as shall be determined by the Administrator in the applicable Award Agreement. The Administrator may also provide that any Option shall be exercisable only in installments, and the Administrator may waive such installment exercise provisions at any time, in whole or in part, based on such factors as the Administrator may determine in its sole discretion. Notwithstanding anything to the contrary contained herein, an Option may not be exercised for a fraction of a share.

(f) Method of Exercise. Options may be exercised in whole or in part by giving written notice of exercise to the Company specifying the number of Shares to be purchased, accompanied by payment in full of the aggregate Exercise Price of the Shares so purchased in cash or its equivalent, as determined by the Administrator. As determined by the Administrator, in its sole discretion, with respect to any Option or category of Options, payment in whole or in part may also be made (i) by means of consideration received under any cashless exercise procedure approved by the Administrator (including the withholding of Shares otherwise issuable upon exercise), (ii) in the form of unrestricted Shares already owned by the Participant which have a Fair Market Value on the date of surrender equal to the aggregate Exercise Price of the Shares as to which such Option shall be exercised, (iii) any other form of consideration approved by the Administrator and permitted by applicable law or (iv) any combination of the foregoing. In determining which methods a Participant may utilize to pay the Exercise Price, the Administrator may consider such factors as it determines are appropriate; provided, however, that with respect to Incentive Stock Options, all such discretionary determinations shall be made by the Administrator at the time of grant and specified in the Award Agreement.

(g) Rights as Stockholder. A Participant shall have no rights to dividends or any other rights of a stockholder with respect to the Shares subject to an Option until the Participant has given written notice of the exercise thereof, has paid in full for such Shares and has satisfied the requirements of Section 15 of the Plan.

(h) Termination of Employment or Service.

(i) Unless the applicable Award Agreement provides otherwise, in the event that the employment or service of a Participant with the Company and all Affiliates thereof shall terminate for any reason other than Cause, Retirement, Disability, or death, (A) Options granted to such Participant, to the extent that they are exercisable at the time of such termination, shall remain exercisable until the date that is ninety (90) days after such termination, on which date they shall expire, and (B) Options granted to such Participant, to the extent that they were not exercisable at the time of such termination, shall expire at the close of business on the date of such termination. The ninety (90) day period described in this Section 7(h)(i) shall be extended to one (1) year after the date of such termination in the event of the Participant’s death during such ninety (90) day period. Notwithstanding the foregoing, no Option shall be exercisable after the expiration of its term.

(ii) Unless the applicable Award Agreement provides otherwise, in the event that the employment or service of a Participant with the Company and all Affiliates thereof shall terminate on account of Retirement, Disability or the death of the Participant, (A) Options granted to such Participant, to the extent that they were exercisable at the time of such termination, shall remain exercisable until the date that is one (1) year after such termination, on which date they shall expire and (B) Options granted to such Participant, to the extent that they were not exercisable at the time of such termination, shall expire at the close of business on the date of such termination. Notwithstanding the foregoing, no Option shall be exercisable after the expiration of its term.

(iii) In the event of the termination of a Participant’s employment or service for Cause, all outstanding Options granted to such Participant shall expire at the commencement of business on the date of such termination.

(iv) For purposes of determining which Options are exercisable upon termination of employment or service for purposes of this Section 7(h), Options that are not exercisable solely due to a blackout period shall be considered exercisable.

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Exhibit 10.2

(i) Other Change in Employment Status. An Option may be affected, both with regard to vesting schedule and termination, by leaves of absence, changes from full-time to part-time employment, partial disability or other changes in the employment status or service of a Participant, as evidenced in a Participant’s Award Agreement.

(j) Change in Control. Notwithstanding anything herein to the contrary, upon a Change in Control, all outstanding Options shall be subject to Section 12 of the Plan.

(k) Automatic Exercise. Unless otherwise provided by the Administrator in an Award Agreement or otherwise, or as otherwise directed by the Participant in writing to the Company, each vested and exercisable Option outstanding on the Automatic Exercise Date with an Exercise Price per Share that is less than the Fair Market Value per Share as of such date shall automatically and without further action by the Participant or the Company be exercised on the Automatic Exercise Date. In the sole discretion of the Administrator, payment of the exercise price of any such Option shall be made pursuant to Section 7(f)(i), or (ii) and the Company or any Affiliate shall deduct or withhold an amount sufficient to satisfy all taxes associated with such exercise in accordance with Section 15. Unless otherwise determined by the Administrator, this Section 7(k) shall not apply to an Option if the Participant’s employment or service has terminated on or before the Automatic Exercise Date. For the avoidance of doubt, no Option with an Exercise Price per Share that is equal to or greater the Fair Market Value per Share on the Automatic Exercise Date shall be exercised pursuant to this Section 7(k).

Section 8. Stock Appreciation Rights.

(a) General. Stock Appreciation Rights may be granted either alone (“Free Standing Rights”) or in conjunction with all or part of any Option granted under the Plan (“Related Rights”). Related Rights may be granted either at or after the time of the grant of such Option. The Administrator shall determine the Eligible Recipients to whom, and the time or times at which, grants of Stock Appreciation Rights shall be made, the number of Shares to be awarded, the price per Share, and all other conditions of Stock Appreciation Rights. Notwithstanding the foregoing, no Related Right may be granted for more Shares than are subject to the Option to which it relates and any Stock Appreciation Right must be granted with an Exercise Price not less than the Fair Market Value of Common Stock on the date of grant. The provisions of Stock Appreciation Rights need not be the same with respect to each Participant. Stock Appreciation Rights granted under the Plan shall be subject to the following terms and conditions set forth in this Section 8 and shall contain such additional terms and conditions, not inconsistent with the terms of the Plan, as the Administrator shall deem desirable, as set forth in the applicable Award Agreement.

(b) Awards; Rights as Stockholder. The prospective recipient of a Stock Appreciation Right shall not have any rights with respect to such Award, unless and until such recipient has received an Award Agreement and, if required by the Administrator in the Award Agreement, executed and delivered a fully executed copy thereof to the Company, within a period of sixty (60) days (or such other period as the Administrator may specify) after the award date. Participants who are granted Stock Appreciation Rights shall have no rights as stockholders of the Company with respect to the grant or exercise of such rights.

(c) Exercisability.

(i) Stock Appreciation Rights that are Free Standing Rights shall be exercisable at such time or times and subject to such terms and conditions as shall be determined by the Administrator in the applicable Award Agreement.

(ii) Stock Appreciation Rights that are Related Rights shall be exercisable only at such time or times and to the extent that the Options to which they relate shall be exercisable in accordance with the provisions of Section 7 above and this Section 8 of the Plan.

(d) Payment Upon Exercise.

(i) Upon the exercise of a Free Standing Right, the Participant shall be entitled to receive up to, but not more than, that number of Shares, determined using the Fair Market Value, equal in value to the excess of the Fair Market

11

Exhibit 10.2

Value as of the date of exercise over the price per share specified in the Free Standing Right multiplied by the number of Shares in respect of which the Free Standing Right is being exercised.

(ii) A Related Right may be exercised by a Participant by surrendering the applicable portion of the related Option. Upon such exercise and surrender, the Participant shall be entitled to receive up to, but not more than, that number of Shares, determined using the Fair Market Value, equal in value to the excess of the Fair Market Value as of the date of exercise over the Exercise Price specified in the related Option multiplied by the number of Shares in respect of which the Related Right is being exercised. Options which have been so surrendered, in whole or in part, shall no longer be exercisable to the extent the Related Rights have been so exercised.

(iii) Notwithstanding the foregoing, the Administrator may determine to settle the exercise of a Stock Appreciation Right in cash (or in any combination of Shares and cash).

(e) Termination of Employment or Service.

(i) Subject to Section 8(f), in the event of the termination of employment or service with the Company and all Affiliates thereof of a Participant who has been granted one or more Free Standing Rights, such rights shall be exercisable at such time or times and subject to such terms and conditions as shall be determined by the Administrator in the applicable Award Agreement.

(ii) Subject to Section 8(f), in the event of the termination of employment or service with the Company and all Affiliates thereof of a Participant who has been granted one or more Related Rights, such rights shall be exercisable at such time or times and subject to such terms and conditions as set forth in the related Options.

(f) Term.

(i) The term of each Free Standing Right shall be fixed by the Administrator, but no Free Standing Right shall be exercisable more than ten (10) years after the date such right is granted.

(ii) The term of each Related Right shall be the term of the Option to which it relates, but no Related Right shall be exercisable more than ten (10) years after the date such right is granted.

(g) Change in Control. Notwithstanding anything herein to the contrary, upon a Change in Control, all outstanding Stock Appreciation Rights shall be subject to Section 12 of the Plan.

(h) Automatic Exercise. Unless otherwise provided by the Administrator in an Award Agreement or otherwise, or as otherwise directed by the Participant in writing to the Company, each vested and exercisable Stock Appreciation Right outstanding on the Automatic Exercise Date with an Exercise Price per Share that is less than the Fair Market Value per Share as of such date shall automatically and without further action by the Participant or the Company be exercised on the Automatic Exercise Date. The Company or any Affiliate shall deduct or withhold an amount sufficient to satisfy all taxes associated with such exercise in accordance with Section 15. Unless otherwise determined by the Administrator, this Section 8(h) shall not apply to a Stock Appreciation Right if the Participant’s employment or service has terminated on or before the Automatic Exercise Date. For the avoidance of doubt, no Stock Appreciation Right with an Exercise Price per Share that is equal to or greater the Fair Market Value per Share on the Automatic Exercise Date shall be exercised pursuant to this Section 8(h).

Section 9. Restricted Shares.

(a) General. Restricted Shares may be issued either alone or in addition to other Awards granted under the Plan. The Administrator shall determine the Eligible Recipients to whom, and the time or times at which, grants of Restricted Shares shall be made; the number of Shares to be awarded; the price, if any, to be paid by the Participant for the acquisition of Restricted Shares; the Restricted Period, if any, applicable to Restricted Shares; the Performance Goals (if any) applicable to Restricted Shares; and all other conditions of the Restricted Shares. If the restrictions, Performance Goals and/or conditions established by the Administrator are not attained, a Participant shall forfeit his or her Restricted Shares in accordance with the terms of the grant. The provisions of the Restricted Shares need not be the same with respect to each Participant.

12

Exhibit 10.2

(b) Awards and Certificates. The prospective recipient of Restricted Shares shall not have any rights with respect to any such Award, unless and until such recipient has received an Award Agreement and, if required by the Administrator in the Award Agreement, executed and delivered a fully executed copy thereof to the Company, within a period of sixty (60) days (or such other period as the Administrator may specify) after the award date. Except as otherwise provided in Section 9(c) of the Plan, (i) each Participant who is granted an award of Restricted Shares may, in the Company’s sole discretion, be issued a stock certificate in respect of such Restricted Shares; and (ii) any such certificate so issued shall be registered in the name of the Participant, and shall bear an appropriate legend referring to the terms, conditions, and restrictions applicable to any such Award.

The Company may require that the stock certificates, if any, evidencing Restricted Shares granted hereunder be held in the custody of the Company until the restrictions thereon shall have lapsed, and that, as a condition of any award of Restricted Shares, the Participant shall have delivered a stock power, endorsed in blank, relating to the Shares covered by such Award.

Notwithstanding anything in the Plan to the contrary, any Restricted Shares (whether before or after any vesting conditions have been satisfied) may, in the Company’s sole discretion, be issued in uncertificated form pursuant to the customary arrangements for issuing shares in such form.

(c) Restrictions and Conditions. The Restricted Shares granted pursuant to this Section 9 shall be subject to the following restrictions and conditions and any additional restrictions or conditions as determined by the Administrator at the time of grant or thereafter:

(i) The Administrator may, in its sole discretion, provide for the lapse of restrictions in installments and may accelerate or waive such restrictions in whole or in part based on such factors and such circumstances as the Administrator may determine, in its sole discretion, including, but not limited to, the attainment of certain Performance Goals, the Participant’s termination of employment or service as a non-employee Director or Consultant of the Company or an Affiliate thereof, or the Participant’s death or Disability.

(ii) Except as provided in Section 17 of the Plan or in the Award Agreement, the Participant shall generally have the rights of a stockholder of the Company with respect to Restricted Shares during the Restricted Period. In the Administrator’s discretion and as provided in the applicable Award Agreement, a Participant may be entitled to dividends or dividend equivalents on an Award of Restricted Shares, which will be payable in accordance with the terms of such grant as determined by the Administrator. Certificates for Shares of unrestricted Common Stock may, in the Company’s sole discretion, be delivered to the Participant only after the Restricted Period has expired without forfeiture in respect of such Restricted Shares, except as the Administrator, in its sole discretion, shall otherwise determine.

(iii) The rights of Participants granted Restricted Shares upon termination of employment or service as a non-employee Director or Consultant of the Company or an Affiliate thereof terminates for any reason during the Restricted Period shall be set forth in the Award Agreement.

(d) Change in Control. Notwithstanding anything herein to the contrary, upon a Change in Control, all outstanding Restricted Shares shall be subject to Section 12 of the Plan.

Section 10. Restricted Stock Units.

(a) General. Restricted Stock Units may be issued either alone or in addition to other Awards granted under the Plan. The Administrator shall determine the Eligible Recipients to whom, and the time or times at which, grants of Restricted Stock Units shall be made; the number of Restricted Stock Units to be awarded; the Restricted Period, if any, applicable to Restricted Stock Units; the Performance Goals (if any) applicable to Restricted Stock Units; and all other conditions of the Restricted Stock Units. If the restrictions, Performance Goals and/or conditions established by the Administrator are not attained, a Participant shall forfeit his or her Restricted Stock Units in

13

Exhibit 10.2

accordance with the terms of the grant. The provisions of Restricted Stock Units need not be the same with respect to each Participant.

(b) Award Agreement. The prospective recipient of Restricted Stock Units shall not have any rights with respect to any such Award, unless and until such recipient has received an Award Agreement and, if required by the Administrator in the Award Agreement, executed and delivered a fully executed copy thereof to the Company, within a period of sixty (60) days (or such other period as the Administrator may specify) after the award date.

(c) Restrictions and Conditions. The Restricted Stock Units granted pursuant to this Section 10 shall be subject to the following restrictions and conditions and any additional restrictions or conditions as determined by the Administrator at the time of grant or, subject to Code Section 409A, thereafter:

(i) The Administrator may, in its sole discretion, provide for the lapse of restrictions in installments and may accelerate or waive such restrictions in whole or in part based on such factors and such circumstances as the Administrator may determine, in its sole discretion, including, but not limited to, the attainment of certain Performance Goals, the Participant’s termination of employment or service as a non-employee Director or Consultant of the Company or an Affiliate thereof, or the Participant’s death or Disability.

(ii) Participants holding Restricted Stock Units shall have no voting rights. A Restricted Stock Unit may, at the Administrator’s discretion, carry with it a right to dividend equivalents. Such right would entitle the holder to be credited with an amount equal to all cash dividends paid on one Share while the Restricted Stock Unit is outstanding. The Administrator, in its discretion, may grant dividend equivalents from the date of grant or only after a Restricted Stock Unit is vested.

(iii) The rights of Participants granted Restricted Stock Units upon termination of employment or service as a non-employee Director or Consultant of the Company or an Affiliate thereof terminates for any reason during the Restricted Period shall be set forth in the Award Agreement.

(d) Settlement of Restricted Stock Units. Settlement of vested Restricted Stock Units shall be made to Participants in the form of Shares, unless the Administrator, in its sole discretion, provides for the payment of the Restricted Stock Units in cash (or partly in cash and partly in Shares) equal to the value of the Shares that would otherwise be distributed to the Participant.

(e) Change in Control. Notwithstanding anything herein to the contrary, upon a Change in Control, all outstanding Restricted Stock Units shall be subject to Section 12 of the Plan.

Section 11. Other Share Based or Cash-Based Awards.

(a) The Administrator is authorized to grant Awards to Participants in the form of Other Share Based Awards or Other Cash-Based Awards, as deemed by the Administrator to be consistent with the purposes of the Plan and as evidenced by an Award Agreement. The Administrator shall determine the terms and conditions of such Awards, consistent with the terms of the Plan, at the date of grant or thereafter, including any Performance Goals and performance periods. Common Stock or other securities or property delivered pursuant to an Award in the nature of a purchase right granted under this Section 11 shall be purchased for such consideration, paid for at such times, by such methods, and in such forms, including, without limitation, Shares, other Awards, notes or other property, as the Administrator shall determine, subject to any required corporate action.

(b) The prospective recipient of an Other Share-Based Award or Other Cash-Based Award shall not have any rights with respect to such Award, unless and until such recipient has received an Award Agreement and, if required by the Administrator in the Award Agreement, executed and delivered a fully executed copy thereof to the Company, within a period of sixty (60) days (or such other period as the Administrator may specify) after the award date.

(c) Notwithstanding anything herein to the contrary, upon a Change in Control, all outstanding Other Share-Based Awards and Other Cash-Based Awards shall be subject to Section 12 of the Plan.

14

Exhibit 10.2

Section 12. Change in Control.

The Administrator may provide in the applicable Award Agreement that an Award will vest on an accelerated basis upon the Participant’s termination of employment or service in connection with a Change in Control or upon the occurrence of any other event that the Administrator may set forth in the Award Agreement. If the Company is a party to an agreement that is reasonably likely to result in a Change in Control, such agreement may provide for: (i) the continuation of any Options and Stock Appreciation Rights by the Company, if the Company is the surviving corporation; (ii) the assumption of any Options and Stock Appreciation Rights by the surviving corporation or its parent or subsidiary; (iii) the substitution by the surviving corporation or its parent or subsidiary of equivalent awards for any Options and Stock Appreciation Rights, provided, however, that any such assumption or substitution with respect to Options and Stock Appreciation Rights under the foregoing clauses (ii) or (iii) shall occur in accordance with the requirements of Code Section 409A and 424, when applicable; or (iv) settlement of any Options and Stock Appreciation Rights for the Change in Control Price (less, to the extent applicable, the per share exercise or grant price), or, if the per share exercise or grant price equals or exceeds the Change in Control Price or if the Administrator determines that Award cannot reasonably become vested pursuant to its terms, such Options and Stock Appreciation Rights shall terminate and be canceled. To the extent that Restricted Shares, Restricted Stock Units or other Awards (other than Options and Stock Appreciation Rights) settle in Shares in accordance with their terms upon a Change in Control, such Shares shall be entitled to receive as a result of the Change in Control transaction the same consideration as the Shares held by stockholders of the Company as a result of the Change in Control transaction. For purposes of this Section 12, “Change in Control Price” shall mean the Fair Market Value of a Share upon a Change in Control. To the extent that the consideration paid in any such Change in Control transaction consists all or in part of securities or other non-cash consideration, the value of such securities or other non-cash consideration shall be determined in good faith by the Administrator.

Section 13. Amendment and Termination.

(a) The Board or the Committee may amend, alter or terminate the Plan, but no amendment, alteration, or termination shall be made that would impair the rights of a Participant under any Award theretofore granted without such Participant’s consent.

(b) Notwithstanding the foregoing, (i) approval of the Company’s stockholders shall be obtained to increase the aggregate Share limit and annual Award limits described in Section 4 and for any amendment that would require such approval in order to satisfy the requirements of Code Section 422, if applicable, any rules of the stock exchange on which the Common Stock is traded or other applicable law, and (ii) without stockholder approval to the extent required by the rules of any applicable national securities exchange or inter-dealer quotation system on which the Shares are listed or quoted, except as otherwise permitted under Section 5 of the Plan, (A) no amendment or modification may reduce the Exercise Price of any Option or Stock Appreciation Right, (B) the Committee may not cancel any outstanding Option or Stock Appreciation Right and replace it with a new Option or Stock Appreciation Right, another Award or cash and (C) the Committee may not take any other action that is considered a “repricing” for purposes of the stockholder approval rules of the applicable securities exchange or inter-dealer quotation system.

(c) Subject to the terms and conditions of the Plan and Code Section 409A, the Administrator may modify, extend or renew outstanding Awards under the Plan, or accept the surrender of outstanding Awards (to the extent not already exercised) and grant new Awards in substitution of them (to the extent not already exercised).

(d) Notwithstanding the foregoing, no alteration, modification or termination of an Award will, without the prior written consent of the Participant, adversely alter or impair any rights or obligations under any Award already granted under the Plan.

15

Exhibit 10.2

Section 14. Unfunded Status of Plan.

The Plan is intended to constitute an “unfunded” plan for incentive compensation. With respect to any payments not yet made or Shares not yet transferred to a Participant by the Company, nothing contained herein shall give any such Participant any rights that are greater than those of a general creditor of the Company.

Section 15. Withholding Taxes.

Each Participant shall, no later than the date as of which the value of an Award first becomes includible in the gross income of such Participant for federal, state and/or local income tax purposes, pay to the Company, or make arrangements satisfactory to the Administrator regarding payment of, any federal, state, or local taxes of any kind, domestic or foreign, required by law or regulation to be withheld with respect to the Award. The obligations of the Company under the Plan shall be conditional on the making of such payments or arrangements, and the Company shall, to the extent permitted by law, have the right to deduct any such taxes from any payment of any kind otherwise due to such Participant. Whenever cash is to be paid pursuant to an Award granted hereunder, the Company shall have the right to deduct therefrom an amount sufficient to satisfy any federal, state and local withholding tax requirements related thereto. Whenever Shares are to be delivered pursuant to an Award, the Company shall have the right to require the Participant to remit to the Company in cash an amount sufficient to satisfy any related federal, state and local taxes, domestic or foreign, to be withheld and applied to the tax obligations. With the approval of the Administrator, a Participant may satisfy the foregoing requirement by electing to have the Company withhold from delivery of Shares or by delivering already owned unrestricted shares of Common Stock, in each case, having a value equal to the amount required to be withheld or other greater amount not exceeding the maximum statutory rate required to be collected on the transaction under applicable law, as applicable to the Participant, if such other greater amount would not, as determined by the Committee, result in adverse financial accounting treatment (including in connection with the effectiveness of FASB Accounting Standards Update 2016-09). Such Shares shall be valued at their Fair Market Value on the date of which the amount of tax to be withheld is determined. Fractional share amounts shall be settled in cash. Such an election may be made with respect to all or any portion of the Shares to be delivered pursuant to an Award. The Company may also use any other method of obtaining the necessary payment or proceeds, as permitted by law, to satisfy its withholding obligation with respect to any Option or other Award.

Section 16. Dividends; Dividend Equivalents.

Notwithstanding anything in this Plan to the contrary, to the extent that an Award contains a right to receive dividends or dividend equivalents while such Award remains unvested, such dividends or dividend equivalents will be accumulated and paid once and to the extent that the underlying Award vests.

Section 17. Non-United States Employees.

Without amending the Plan, the Administrator may grant Awards to eligible persons residing in non-United States jurisdictions on such terms and conditions different from those specified in the Plan, including the terms of any award agreement or plan, adopted by the Company or any Subsidiary thereof to comply with, or take advantage of favorable tax or other treatment available under, the laws of any non-United States jurisdiction, as may in the judgment of the Administrator be necessary or desirable to foster and promote achievement of the purposes of the Plan and, in furtherance of such purposes the Administrator may make such modifications, amendments, procedures,

16

Exhibit 10.2

subplans and the like as may be necessary or advisable to comply with provisions of laws in other countries or jurisdictions in which the Company or its Subsidiaries operates or has employees.

Section 18. Transfer of Awards.

No purported sale, assignment, mortgage, hypothecation, transfer, charge, pledge, encumbrance, gift, transfer in trust (voting or other) or other disposition of, or creation of a security interest in or lien on, any Award or any agreement or commitment to do any of the foregoing (each, a “Transfer”) by any holder thereof in violation of the provisions of the Plan or an Award Agreement will be valid, except with the prior written consent of the Administrator, which consent may be granted or withheld in the sole discretion of the Administrator. Any purported Transfer of an Award or any economic benefit or interest therein in violation of the Plan or an Award Agreement shall be null and void ab initio, and shall not create any obligation or liability of the Company, and any person purportedly acquiring any Award or any economic benefit or interest therein transferred in violation of the Plan or an Award Agreement shall not be entitled to be recognized as a holder of such Shares. Unless otherwise determined by the Administrator in accordance with the provisions of the immediately preceding sentence, an Option may be exercised, during the lifetime of the Participant, only by the Participant or, during any period during which the Participant is under a legal disability, by the Participant’s guardian or legal representative.

Section 19. Continued Employment.

The adoption of the Plan shall not confer upon any Eligible Recipient any right to continued employment or service with the Company or an Affiliate thereof, as the case may be, nor shall it interfere in any way with the right of the Company or an Affiliate thereof to terminate the employment or service of any of its Eligible Recipients at any time.

Section 20. Effective Date and Approval Date.

The Plan was originally effective as of July 20, 2016, amended on May 30, 2019, and amended and restated on June 16, 2021, and the Plan, as amended hereby, will be effective as of June 22, 2022 (the “Effective Date”). The Plan will be unlimited in duration and, in the event of Plan termination, will remain in effect as long as any Shares awarded under it are outstanding and not fully vested; provided, however, that no Awards will be made under the Plan on or after June 22, 2032. No Option that is intended to be an Incentive Stock Option may be granted under the Plan until the Approval Date. If the Approval Date does not occur within twelve (12) months after the Effective Date, then no Options that are intended to be Incentive Stock Options may be granted under the Plan.

Section 21. Code Section 409A.

The intent of the parties is that payments and benefits under the Plan be either exempt from Code Section 409A or comply with Code Section 409A to the extent subject thereto, and, accordingly, to the maximum extent permitted, the Plan shall be interpreted and be administered consistent with such intent. Any payments described in the Plan that are due within the “short-term deferral period” as defined in Code Section 409A shall not be treated as deferred compensation unless applicable law requires otherwise. Notwithstanding anything to the contrary in the Plan, to the extent required in order to avoid accelerated taxation and/or tax penalties under Code Section 409A, amounts that would otherwise be payable and benefits that would otherwise be provided upon a “separation from service” to a Participant who is a “specified employee” shall be paid on the first business day after the date that is six (6) months following the Participant’s separation from service (or upon the Participant’s death, if earlier). In addition, for

17

Exhibit 10.2

purposes of the Plan, each amount to be paid or benefit to be provided to the Participant pursuant to the Plan, which constitute deferred compensation subject to Code Section 409A, shall be construed as a separate identified payment for purposes of Code Section 409A. Nothing contained in the Plan or an Award Agreement shall be construed as a guarantee of any particular tax effect with respect to an Award. The Company does not guarantee that any Awards provided under the Plan will be exempt from or in compliance with the provisions of Code Section 409A, and in no event will the Company be liable for any or all portion of any taxes, penalties, interest or other expenses that may be incurred by a Participant on account of any Award being subject to, but not in compliance with, Code Section 409A.

Section 22. Erroneously Awarded Compensation.

The Plan and all Awards issued hereunder shall be subject to any compensation recovery and/or recoupment policy adopted by the Company to comply with applicable law, including, without limitation, the Dodd-Frank Wall Street Reform and Consumer Protection Act, or to comport with good corporate governance practices, as such policies may be amended from time to time.

Section 23. Governing Law.

The Plan shall be governed by and construed in accordance with the laws of the State of Delaware, without giving effect to principles of conflicts of law of such state.

Section 24. Plan Document Controls.

The Plan and each Award Agreement constitute the entire agreement with respect to the subject matter hereof and thereof; provided, that in the event of any inconsistency between the Plan and such Award Agreement, the terms and conditions of the Plan shall control.

18

EX-31.1

EXHIBIT 31.1

CERTIFICATION PURSUANT TO SECTION 302

CERTIFICATION OF CEO

I, Charles A. Bacon, III, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30, 2022 of Limbach Holdings, Inc. (the "registrant");

2.Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

	/s/ Charles A. Bacon, III
	Charles A. Bacon, III
	Chief Executive Officer
Date: August 9, 2022

EX-31.2

EXHIBIT 31.2

CERTIFICATION PURSUANT TO SECTION 302

CERTIFICATION OF CFO

I, Jayme L. Brooks, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q for the quarter ended June 30, 2022 of Limbach Holdings, Inc. (the "registrant");

2.Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

	/s/ Jayme L. Brooks
	Jayme L. Brooks
	Chief Financial Officer
Date: August 9, 2022

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Limbach Holdings, Inc. (the “Company”) for the quarter ended June 30, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Charles A. Bacon, III, the Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of the undersigned’s knowledge and belief:

(1)the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. Section 78m(a) or 78o(d)); and

(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 9, 2022
By	/s/ Charles A. Bacon, III
Charles A. Bacon, III, Chief Executive Officer
(Principal Executive Officer)

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Limbach Holdings, Inc. (the “Company”) for the quarter ended June 30, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Jayme L. Brooks, the Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of the undersigned’s knowledge and belief:

(1)the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. Section 78m(a) or 78o(d)); and

(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 9, 2022
By	/s/ Jayme L. Brooks
Jayme L. Brooks, Chief Financial Officer
(Principal Financial Officer)

XML

Cover - shares	6 Months Ended
	Jun. 30, 2022	Aug. 08, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity File Number	001-36541
Entity Registrant Name	LIMBACH HOLDINGS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-5399422
Entity Address, Address Line One	797 Commonwealth Drive
Entity Address, City or Town	Warrendale
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	15086
City Area Code	412
Local Phone Number	359-2100
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	LMB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		10,447,660
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001606163
Current Fiscal Year End Date	--12-31

XML

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 19,630	$ 14,476
Restricted cash	113	113
Accounts receivable (net of allowance for doubtful accounts of $316 and $263 as of June 30, 2022 and December 31, 2021, respectively)	101,018	89,327
Contract assets	74,959	83,863
Income tax receivable	676	114
Other current assets	5,534	5,013
Total current assets	201,930	192,906
Property and equipment, net	20,419	21,621
Intangible assets, net	16,109	16,907
Goodwill	11,370	11,370
Operating lease right-of-use assets	16,644	20,119
Deferred tax asset	4,342	4,330
Other assets	231	259
Total assets	271,045	267,512
Current liabilities:
Current portion of long-term debt	9,893	9,879
Current operating lease liabilities	3,415	4,366
Accounts payable, including retainage	63,205	63,840
Contract liabilities	39,835	26,712
Accrued income taxes	0	501
Accrued expenses and other current liabilities	25,773	24,444
Total current liabilities	142,121	129,742
Long-term debt	24,699	29,816
Long-term operating lease liabilities	14,086	16,576
Other long-term liabilities	1,827	3,540
Total liabilities	182,733	179,674
Commitments and contingencies (Note 13)
STOCKHOLDERS’ EQUITY
Common stock, $0.0001 par value; 100,000,000 shares authorized, 10,423,068 issued and outstanding as of June 30, 2022 and 10,304,242 at December 31, 2021	1	1
Additional paid-in capital	86,128	85,004
Retained Earnings	2,183	2,833
Total stockholders’ equity	88,312	87,838
Total liabilities and stockholders’ equity	$ 271,045	$ 267,512

XML

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Accounts receivable, allowance for credit loss, current	$ 316	$ 263
Common stock, par or stated value per share (in usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares, issued (in shares)	10,423,068	10,304,242
Common stock, shares, outstanding (in shares)	10,423,068	10,304,242

XML

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenue	$ 116,120	$ 121,019	$ 230,942	$ 234,363
Cost of revenue	94,800	102,329	191,282	198,444
Gross profit	21,320	18,690	39,660	35,919
Operating expenses:
Selling, general and administrative	18,690	17,232	37,424	34,377
Change in fair value of contingent consideration	765	0	765	0
Amortization of intangibles	399	104	798	208
Total operating expenses	19,854	17,336	38,987	34,585
Operating income	1,466	1,354	673	1,334
Other (expenses) income:
Interest expense, net	(478)	(452)	(964)	(1,716)
Gain on disposition of property and equipment	147	94	111	8
Loss on early termination of operating lease	(32)	0	(849)	0
Loss on early debt extinguishment	0	0	0	(1,961)
Gain on change in fair value of warrant liability	0	0	0	14
Total other expenses	(363)	(358)	(1,702)	(3,655)
Income (loss) before income taxes	1,103	996	(1,029)	(2,321)
Income tax provision (benefit)	237	264	(379)	(771)
Net income (loss)	$ 866	$ 732	$ (650)	$ (1,550)
Earnings (loss) per common share:
Basic (in usd per share)	$ 0.08	$ 0.07	$ (0.06)	$ (0.16)
Diluted (in usd per share)	$ 0.08	$ 0.07	$ (0.06)	$ (0.16)
Weighted average number of shares outstanding:
Basic (in shares)	10,423,068	10,251,696	10,421,886	9,737,801
Diluted (in shares)	10,567,304	10,469,028	10,421,886	9,737,801

XML

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Retained earnings (Accumulated deficit)
Beginning balance (in shares) at Dec. 31, 2020		7,926,137
Beginning balance at Dec. 31, 2020	$ 53,732	$ 1	$ 57,612	$ (3,881)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	677		677
Shares issued related to vested restricted stock units (in shares)		89,446
Shares issued related to vested restricted stock units	0
Tax withholding related to vested restricted stock units	(183)		(183)
Shares issued related to employee stock purchase plan (in shares)		8,928
Shares issued related to employee stock purchase plan	92		92
Shares issued related to exercise of warrants (in shares)		172,869
Shares issued related to the exercise of warrants	1,989		1,989
Shares issued related to sale of common stock (in shares)		2,051,025
Shares issued related to sale of common stock	22,773		22,773
Net (loss) income	(2,282)			(2,282)
Ending balance (in shares) at Mar. 31, 2021		10,248,405
Ending balance at Mar. 31, 2021	76,798	$ 1	82,960	(6,163)
Beginning balance (in shares) at Dec. 31, 2020		7,926,137
Beginning balance at Dec. 31, 2020	53,732	$ 1	57,612	(3,881)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(1,550)
Ending balance (in shares) at Jun. 30, 2021		10,251,696
Ending balance at Jun. 30, 2021	78,159	$ 1	83,589	(5,431)
Beginning balance (in shares) at Mar. 31, 2021		10,248,405
Beginning balance at Mar. 31, 2021	76,798	$ 1	82,960	(6,163)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	636		636
Shares issued related to vested restricted stock units (in shares)		3,291
Shares issued related to vested restricted stock units	0
Tax withholding related to vested restricted stock units	(7)		(7)
Net (loss) income	732			732
Ending balance (in shares) at Jun. 30, 2021		10,251,696
Ending balance at Jun. 30, 2021	78,159	$ 1	83,589	(5,431)
Beginning balance (in shares) at Dec. 31, 2021		10,304,242
Beginning balance at Dec. 31, 2021	87,838	$ 1	85,004	2,833
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	599		599
Shares issued related to vested restricted stock units (in shares)		105,928
Shares issued related to vested restricted stock units	0
Tax withholding related to vested restricted stock units	(148)		(148)
Shares issued related to employee stock purchase plan (in shares)		12,898
Shares issued related to employee stock purchase plan	98		98
Net (loss) income	(1,516)			(1,516)
Ending balance (in shares) at Mar. 31, 2022		10,423,068
Ending balance at Mar. 31, 2022	86,871	$ 1	85,553	1,317
Beginning balance (in shares) at Dec. 31, 2021		10,304,242
Beginning balance at Dec. 31, 2021	87,838	$ 1	85,004	2,833
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(650)
Ending balance (in shares) at Jun. 30, 2022		10,423,068
Ending balance at Jun. 30, 2022	88,312	$ 1	86,128	2,183
Beginning balance (in shares) at Mar. 31, 2022		10,423,068
Beginning balance at Mar. 31, 2022	86,871	$ 1	85,553	1,317
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	575		575
Net (loss) income	866			866
Ending balance (in shares) at Jun. 30, 2022		10,423,068
Ending balance at Jun. 30, 2022	$ 88,312	$ 1	$ 86,128	$ 2,183

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (650)	$ (1,550)
Adjustments to reconcile net loss to cash provided by (used in) operating activities:
Depreciation and amortization	4,148	2,964
Provision for doubtful accounts	104	70
Stock-based compensation expense	1,174	1,313
Noncash operating lease expense	2,232	2,091
Amortization of debt issuance costs	65	220
Deferred income tax provision	(12)	(306)
Gain on sale of property and equipment	(111)	(8)
Loss on early termination of operating lease	849	0
Change in fair value of contingent consideration	765	0
Loss on early debt extinguishment	0	1,961
Gain on change in fair value of warrant liability	0	(14)
Changes in operating assets and liabilities:
Accounts receivable	(11,796)	(8,918)
Contract assets	8,904	(3,717)
Other current assets	(520)	(1,306)
Accounts payable, including retainage	(635)	190
Prepaid income taxes	(562)	(891)
Accrued taxes payable	(501)	(1,671)
Contract liabilities	13,123	(7,469)
Operating lease liabilities	(2,165)	(2,004)
Accrued expenses and other current liabilities	(1,861)	(5,450)
Other long-term liabilities	69	(114)
Net cash provided by (used in) operating activities	12,620	(24,609)
Cash flows from investing activities:
Proceeds from sale of property and equipment	189	361
Purchase of property and equipment	(473)	(501)
Net cash used in investing activities	(284)	(140)
Cash flows from financing activities:
Proceeds from Wintrust Term Loan (as defined in Note 6)	0	30,000
Payments on Wintrust and A&R Wintrust Term Loans	(9,149)	(2,000)
Proceeds from A&R Wintrust Revolving Loan (as defined in Note 6)	15,194	0
Payments on 2019 Refinancing Term Loan (as defined in Note 6)	(11,694)	0
Payments on 2019 Refinancing Term Loan (as defined in Note 6)	0	(39,000)
Prepayment penalty and other costs associated with early debt extinguishment	0	(1,376)
Proceeds from the sale of common stock	0	22,773
Proceeds from the exercise of warrants	0	1,989
Payments on finance leases	(1,358)	(1,318)
Payments of debt issuance costs	(25)	(593)
Taxes paid related to net-share settlement of equity awards	(363)	(401)
Proceeds from contributions to Employee Stock Purchase Plan	213	221
Net cash (used in) provided by financing activities	(7,182)	10,295
Increase (decrease) in cash, cash equivalents and restricted cash	5,154	(14,454)
Cash, cash equivalents and restricted cash, beginning of period	14,589	42,260
Cash, cash equivalents and restricted cash, end of period	19,743	27,806
Noncash investing and financing transactions:
Right of use assets obtained in exchange for new operating lease liabilities	0	156
Right of use assets obtained in exchange for new finance lease liabilities	1,968	336
Right of use assets disposed or adjusted modifying operating lease liabilities	(1,276)	36
Right of use assets disposed or adjusted modifying finance lease liabilities	(77)	0
Interest paid	911	1,741
Cash paid for income taxes	$ 696	$ 2,096

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Business and Organization	6 Months Ended
	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Organization	Business and OrganizationLimbach Holdings, Inc. (the “Company,” “we” or “us”), a Delaware corporation headquartered in Warrendale, Pennsylvania, was formed on July 20, 2016 as a result of a business combination with Limbach Holdings LLC (“LHLLC”). The Company is an integrated building systems solutions firm whose expertise is in the design, modular prefabrication, installation, management and maintenance of heating, ventilation, air-conditioning (“HVAC”), mechanical, electrical, plumbing and controls systems. The Company provides comprehensive facility services consisting of mechanical construction, full HVAC service and maintenance, energy audits and retrofits, engineering and design build services, constructability evaluation, equipment and materials selection, offsite/prefabrication construction, and the complete range of sustainable building solutions. The Company's customers operate in diverse industries including, but not limited to, healthcare, life sciences, data centers, industrial and light manufacturing, entertainment, education and government. The Company operates primarily in the Northeast, Mid-Atlantic, Southeast, Midwest, and Southwestern regions of the United States.The Company operates in two segments, (i) General Contractor Relationships (“GCR”), in which the Company generally manages new construction or renovation projects that involve primarily HVAC, plumbing, or electrical services awarded to the Company by general contractors or construction managers, and (ii) Owner Direct Relationships (“ODR”), in which the Company provides maintenance or service primarily on HVAC, plumbing or electrical systems, building controls and specialty contracting projects direct to, or assigned by, building owners or property managers. This work is primarily performed under fixed price, modified fixed price, and time and material contracts over periods of typically less than two years.

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Significant Accounting Policies

6 Months Ended

Jun. 30, 2022

Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

Basis of Presentation

References in these financial statements to the Company refer collectively to the accounts of Limbach Holdings, Inc. and its wholly-owned subsidiaries, including LHLLC, Limbach Facility Services LLC (“LFS”), Limbach Company LLC, Limbach Company LP, Harper Limbach LLC, Harper Limbach Construction LLC, Limbach Facility & Project Solutions LLC, Jake Marshall, LLC (“JMLLC”) and Coating Solutions, LLC (“CSLLC”) for all periods presented, unless otherwise indicated. All intercompany balances and transactions have been eliminated.

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) for interim financial information and with the requirements of Form 10-Q and Rule 8-03 of Regulation S-X for smaller reporting companies. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. Readers of this report should refer to the consolidated financial statements and the notes thereto included in the Company's most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on March 16, 2022.

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements for assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, the reported amounts of revenue and expenses during the reported period, and the accompanying notes. Management believes that its most significant estimates and assumptions have been based on reasonable and supportable assumptions and the resulting estimates are reasonable for use in the preparation of the condensed consolidated financial statements. The Company’s significant estimates include estimates associated with revenue recognition on construction contracts, costs incurred through each balance sheet date, intangibles, property and equipment, fair value accounting for acquisitions, insurance reserves, fair value of contingent consideration arrangements and contingencies. If the underlying estimates and assumptions upon which the condensed consolidated financial statements are based change in the future, actual amounts may differ from those included in the accompanying condensed consolidated financial statements.

Unaudited Interim Financial Information

The accompanying interim Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Stockholders’ Equity and Condensed Consolidated Statements of Cash Flows for the periods presented are unaudited. Also, within the notes to the condensed consolidated financial statements, the Company has

included unaudited information for these interim periods. These unaudited interim condensed consolidated financial statements have been prepared in accordance with GAAP. In the Company's opinion, the accompanying unaudited condensed consolidated financial statements contain all normal and recurring adjustments necessary for a fair statement of the Company’s financial position as of June 30, 2022, its results of operations and equity for the three and six months ended June 30, 2022 and 2021 and its cash flows for the six months ended June 30, 2022 and 2021. The results for the three and six months ended June 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022.

The Condensed Consolidated Balance Sheet as of December 31, 2021 was derived from the Company's audited financial statements included in its Annual Report on Form 10-K filed with the SEC on March 16, 2022, but is presented as condensed and does not contain all of the footnote disclosures from the annual financial statements.

Recently Adopted Accounting Standards

In November 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which creates an exception to the general recognition and measurement principle for contract assets and contract liabilities from contracts with customers acquired in a business combination. Under this exception, an acquirer applies ASC 606, Revenue from Contracts with Customers, to recognize and measure contract assets and contract liabilities on the acquisition date. ASC 805 generally requires the acquirer in a business combination to recognize and measure the assets it acquires and the liabilities it assumes at fair value on the acquisition date. The changes are effective for annual periods beginning after December 15, 2022. The Company early adopted ASU 2021-08 in December 2021. The contract assets and contract liabilities associated with the Jake Marshall Transaction have been valued in accordance with this standard.

Recent Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, which introduced an expected credit loss methodology for the measurement and recognition of credit losses on most financial instruments, including trade receivables and off-balance sheet credit exposure. Under this guidance, an entity is required to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. This ASU also requires disclosure of information regarding how a company developed its allowance, including changes in the factors that influenced management’s estimate of expected credit losses and the reasons for those changes. The guidance is effective for smaller reporting companies on January 1, 2023 with early adoption permitted. The adoption of this standard will be through a cumulative-effect adjustment to retained earnings as of the effective date. Based on its historical experience, the Company does not expect that this pronouncement will have a significant impact in its condensed consolidated financial statements or on the estimate of the allowance for doubtful accounts.

The FASB has issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting in March 2020. This new guidance provides optional expedients for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform, on financial reporting. The risk of termination of the London Interbank Offered Rate (LIBOR), has caused regulators to undertake reference rate reform initiatives to identify alternative reference rates that are more observable or transaction based that are less susceptible to manipulation. ASU 2020-04 is effective between March 12, 2020 and December 31, 2022.

In addition, in January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope. The amendments in this update refine the scope for certain optional expedients and exceptions for contract modifications and hedge accounting to apply to derivative contracts and certain hedging relationships affected by the discounting transition. An entity may elect to apply the amendments in this update from the beginning of an interim period beginning as of March 12, 2020, through December 31, 2022. The Company is currently evaluating the impact of adopting the reference rate reform guidance (both ASU 2020-04 and ASU 2021-01) on its condensed consolidated financial statements. As discussed in Note 6, the A&R Credit Agreement removed LIBOR as a benchmark rate and now utilizes SOFR (as defined in the A&R Credit Agreement) as its replacement.

In August 2020, the FASB issued ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity, which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity and amends the scope guidance for contracts in an entity's own equity. The ASU addresses how convertible instruments are accounted for in the calculation of diluted earnings per share by using the if-converted method. The guidance is effective for all entities for fiscal years beginning after March 31, 2024, albeit early adoption is permitted no earlier than fiscal years beginning after December 15, 2020. Management is currently assessing the impact of this pronouncement on its condensed consolidated financial statements.

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Acquisitions

6 Months Ended

Jun. 30, 2022

Business Combination and Asset Acquisition [Abstract]

Acquisitions

Acquisitions

Jake Marshall Transaction

On December 2, 2021 (the “Effective Date”), the Company and LFS entered into a Membership Interest Purchase Agreement (the “Purchase Agreement”) with JMLLC, CSLLC (together with JMLLC, the “Acquired Companies” and each an “Acquired Company”) and the owners of the Acquired Companies (collectively, the “Sellers”), pursuant to which LFS purchased all of the outstanding membership interests in the Acquired Companies from the Sellers (the transactions contemplated by the Purchase Agreement collectively being the “Jake Marshall Transaction”). The Jake Marshall Transaction closed on the Effective Date. As a result of the Jake Marshall Transaction, each of the Acquired Companies became wholly-owned indirect subsidiaries of the Company. The acquisition expands the Company’s market share within its existing product and service lines.

Total consideration paid by the Company for the Jake Marshall Transaction at closing was $21.3 million (the “Closing Purchase Price”), consisting of cash paid to the Sellers, net of adjustments for working capital. Of the consideration paid to the Sellers, $1.0 million is being held in escrow for indemnification purposes. The purchase price is subject to customary post-closing adjustments. In addition, the Sellers may receive up to an aggregate of $6.0 million in cash, consisting of two tranches of $3.0 million, as defined in the Purchase Agreement, if the gross profit of the Acquired Companies equals or exceeds $10.0 million in (i) the approximately 13 month period from closing through December 31, 2022 (the “2022 Earnout Period”) or (ii) fiscal year 2023 (the “2023 Earnout Period”), respectively (collectively, the “Earnout Payments”). To the extent, however, that the gross profit of the Acquired Companies is less than $10.0 million, but exceeds $8.0 million, during any of the 2022 Earnout Period or 2023 Earnout Period, the $3.0 million amount will be prorated for such period.

Allocation of Purchase Price. The Jake Marshall Transaction was accounted for as a business combination using the acquisition method. The following table summarizes the final purchase price and estimated fair values of assets acquired and liabilities assumed as of the Effective Date, with any excess of purchase price over estimated fair value of the identified net assets acquired recorded as goodwill. As a result of the acquisition, the Company recognized $5.2 million of goodwill, all of which was allocated to the ODR segment and fully deductible for tax purposes. Such goodwill primarily related to anticipated future earnings. The following table summarizes the final allocation of the fair value of the assets and liabilities of the Jake Marshall Transaction as of the Effective Date by the Company.

(in thousands)	Purchase Price Allocation
Consideration:
Cash	$	21,313
Earnout provision	3,089
Total Consideration	24,402
Fair value of assets acquired:
Cash and cash equivalents	2,336
Accounts receivable	7,165
Contract assets	1,711
Other current assets	164
Property and equipment	5,762
Intangible assets	5,710
Amount attributable to assets acquired	22,848
Fair value of liabilities assumed:
Accounts payable, including retainage	2,655
Accrued expenses and other current liabilities	570
Contract liabilities	462
Amount attributable to liabilities assumed	3,687
Goodwill	$	5,241

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Revenue from Contracts with Customers

6 Months Ended

Jun. 30, 2022

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

Revenue from Contracts with Customers

The Company generates revenue principally from fixed-price construction contracts to deliver HVAC, plumbing, and electrical construction services to its customers. The duration of its contracts generally ranges from six months to two years. Revenue from fixed price contracts is recognized on the cost-to-cost method, measured by the relationship of total cost incurred to total estimated contract costs. Revenue from time and materials contracts is recognized as services are performed. The Company believes that its extensive experience in HVAC, plumbing, and electrical projects, and its internal cost review procedures during the bidding process, enable it to reasonably estimate costs and mitigate the risk of cost overruns on fixed price contracts.

The Company generally invoices customers on a monthly basis, based on a schedule of values that breaks down the contract amount into discrete billing items. Costs and estimated earnings in excess of billings on uncompleted contracts are recorded as a contract asset until billable under the contract terms. Billings in excess of costs and estimated earnings on uncompleted contracts are recorded as a contract liability until the related revenue is recognizable. The Company classifies contract assets and liabilities that may be settled beyond one year from the balance sheet date as current, consistent with the length of time of the Company’s project operating cycle.

Contract assets

Contract assets include amounts due under retainage provisions and costs and estimated earnings in excess of billings. The components of the contract asset balances as of the respective dates were as follows:

(in thousands)	June 30, 2022		December 31, 2021		Change
Contract assets
Costs in excess of billings and estimated earnings	$	44,366	$	47,447	$	(3,081)
Retainage receivable	30,593		36,416		(5,823)
Total contract assets	$	74,959	$	83,863	$	(8,904)

Retainage receivable represents amounts invoiced to customers where payments have been partially withheld, typically 10%, pending the completion of certain milestones, satisfaction of other contractual conditions or the completion of the project. Retainage agreements vary from project to project and balances could be outstanding for several months or years depending on a number of circumstances such as contract-specific terms, project performance and other variables that may arise as the Company makes progress towards completion.

Contract assets represent the excess of contract costs and profits (or contract revenue) over the amount of contract billings to date and are classified as a current asset. Contract assets result when either: (1) the appropriate contract revenue amount has been recognized over time in accordance with ASC Topic 606, but a portion of the revenue recorded cannot be currently billed due to the billing terms defined in the contract, or (2) costs are incurred related to certain claims and unapproved change orders. Claims occur when there is a dispute regarding both a change in the scope of work and the price associated with that change. Unapproved change orders occur when a change in the scope of work results in additional work being performed before the parties have agreed on the corresponding change in the contract price. The Company routinely estimates recovery related to claims and unapproved change orders as a form of variable consideration at the most likely amount it expects to receive and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Claims and unapproved change orders are billable upon the agreement and resolution between the contractual parties and after the execution of contractual amendments. Increases in claims and unapproved change orders typically result from costs being incurred against existing or new positions; decreases normally result from resolutions and subsequent billings.

The current estimated net realizable value on such items as recorded in contract assets and contract liabilities in the condensed consolidated balance sheets was $38.6 million and $38.1 million as of June 30, 2022 and December 31, 2021, respectively. The Company currently anticipates that the majority of such amounts will be approved or executed within one year. The resolution of those claims and unapproved change orders that may require litigation or other forms of dispute resolution proceedings may delay the timing of billing beyond one year.

Contract liabilities

Contract liabilities include billings in excess of contract costs and provisions for losses. The components of the contract liability balances as of the respective dates were as follows:

(in thousands)	June 30, 2022		December 31, 2021		Change
Contract liabilities
Billings in excess of costs and estimated earnings	$	39,401	$	26,293	$	13,108
Provisions for losses	434		419		15
Total contract liabilities	$	39,835	$	26,712	$	13,123

Billings in excess of costs represent the excess of contract billings to date over the amount of contract costs and profits (or contract revenue) recognized to date. The balance may fluctuate depending on the timing of contract billings and the recognition of contract revenue.

Provisions for losses are recognized in the condensed consolidated statements of operations at the uncompleted performance obligation level for the amount of total estimated losses in the period that evidence indicates that the estimated total cost of a performance obligation exceeds its estimated total revenue.

The net underbilling position for contracts in process consisted of the following:

(in thousands)	June 30, 2022		December 31, 2021
Revenue earned on uncompleted contracts	$	744,522	$	758,450
Less: Billings to date	(739,557)		(737,296)
Net underbilling	$	4,965	$	21,154
(in thousands)	June 30, 2022		December 31, 2021
Costs in excess of billings and estimated earnings	$	44,366	$	47,447
Billings in excess of costs and estimated earnings	(39,401)		(26,293)
Net underbilling	$	4,965	$	21,154

Revisions in Contract Estimates

The Company recorded revisions in its contract estimates for certain GCR and ODR projects. During the three and six months ended June 30, 2022, the Company recorded a material gross profit write-up on one GCR project for a total of $1.3 million that had a net gross profit impact of $0.5 million or more for both periods. During the three months ended June 30, 2021, the Company recorded a material gross profit write-down on one GCR project for a total of $1.0 million that had a net gross profit impact of $0.5 million or more. During the six months ended June 30, 2021, the Company recorded material gross profit write-downs on two GCR projects for a total of $1.5 million.

Remaining Performance Obligations

Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and exclude unexercised contract options. The Company’s remaining performance obligations include projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions.

As of June 30, 2022, the aggregate amount of the transaction prices allocated to the remaining performance obligations of the Company's GCR and ODR segment contracts were $308.8 million and $102.1 million, respectively. The Company currently estimates that 50% and 66% of its GCR and ODR remaining performance obligations as of June 30, 2022, respectively, will be recognized as revenue during the remainder of 2022, with the substantial majority of remaining performance obligations to be recognized within 24 months, although the timing of the Company's performance is not always under its control.

Additionally, the difference between remaining performance obligations and backlog is due to the exclusion of a portion of the Company’s ODR agreements under certain contract types from the Company’s remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer.

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Goodwill and Intangibles

6 Months Ended

Jun. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangibles

Goodwill and Intangibles

Goodwill

Goodwill was $11.4 million as of June 30, 2022 and December 31, 2021 and is entirely associated with the Company's ODR segment. The Company tests its goodwill and indefinite-lived intangible assets allocated to its reporting units for impairment annually on October 1, or more frequently if events or circumstances indicate that it is more likely than not that the fair value of its reporting units and indefinite-lived intangible asset are less than their carrying amount. The Company has the option to assess goodwill for possible impairment by performing a qualitative analysis to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. A quantitative assessment is performed if the qualitative assessments results in a more-likely-than-not determination or if a qualitative assessment is not performed.

The Company did not recognize any impairment charges on its goodwill or intangible assets for the three and six months ended June 30, 2022 or June 30, 2021.

Intangible Assets

Intangible assets are comprised of the following:     

(in thousands)	Gross carrying amount		Accumulated amortization		Net intangible assets, excluding goodwill
June 30, 2022
Amortized intangible assets:
Customer relationships – GCR – Jake Marshall	$	570	$	(47)	$	523
Customer relationships – ODR – Jake Marshall	3,050		(235)		2,815
Customer relationships – ODR – Limbach	4,710		(3,634)		1,076
Favorable leasehold interests – Limbach	190		(90)		100
Backlog – GCR – Jake Marshall	260		(96)		164
Backlog – ODR – Jake Marshall	680		(250)		430
Trade name – Jake Marshall	1,150		(109)		1,041
Total amortized intangible assets	10,610		(4,461)		6,149
Unamortized intangible assets:
Trade name – Limbach(1)	9,960		—		9,960
Total unamortized intangible assets	9,960		—		9,960
Total amortized and unamortized assets, excluding goodwill	$	20,570	$	(4,461)	$	16,109

(1)    The Company has determined that its trade name has an indefinite useful life. The Limbach trade name has been in existence since the Company’s founding in 1901 and therefore is an established brand within the industry.

(in thousands)	Gross carrying amount		Accumulated amortization		Net intangible assets, excluding goodwill
December 31, 2021
Amortized intangible assets:
Customer relationships – GCR – Jake Marshall	$	570	$	(6)	$	564
Customer relationships – ODR – Jake Marshall	3,050		(35)		3,015
Customer relationships – ODR – Limbach	4,710		(3,475)		1,235
Favorable leasehold interests – Limbach	190		(82)		108
Backlog – GCR – Jake Marshall	260		(14)		246
Backlog – ODR – Jake Marshall	680		(36)		644
Trade name – Jake Marshall	1,150		(15)		1,135
Total amortized intangible assets	10,610		(3,663)		6,947
Unamortized intangible assets:
Trade name – Limbach	9,960		—		9,960
Total unamortized intangible assets	9,960		—		9,960
Total amortized and unamortized assets, excluding goodwill	$	20,570	$	(3,663)	$	16,907

Total amortization expense for the Company's definite-lived intangible assets was $0.4 million and $0.8 million for the three and six months ended June 30, 2022, respectively, and $0.1 million and $0.2 million for the three and six months ended June 30, 2021, respectively.

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Debt

6 Months Ended

Jun. 30, 2022

Debt Disclosure [Abstract]

Debt

Debt

Long-term debt consists of the following obligations as of:

(in thousands)	June 30, 2022		December 31, 2021
A&R Wintrust Term Loan - term loan payable in quarterly installments of principal, (commencing in December 2021) plus interest through February 2026	25,733		34,881
A&R Wintrust Revolving Loan	3,500		—
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 3.96% to 6.45% through 2026	5,665		5,132
Total debt	34,898		40,013
Less - Current portion of long-term debt	(9,893)		(9,879)
Less - Unamortized discount and debt issuance costs	(306)		(318)
Long-term debt	$	24,699	$	29,816

On February 24, 2021 (the “2021 Refinancing Date”), the Company refinanced its 2019 Refinancing Term Loan (as defined below) and 2019 Revolving Credit Facility (as defined below) with proceeds from the issuance of the Wintrust Term Loan (as defined below) (the “2021 Refinancing”). As a result of the 2021 Refinancing, the Company prepaid all principal, interest, fees and other obligations outstanding under the 2019 Refinancing Agreements (as defined below) and terminated its 2019 Refinancing Term Loan, 2019 Refinancing Revolving Credit Facility and the CB Warrants (as defined below). In addition, on the 2021 Refinancing Date, the Company recognized a loss on the early extinguishment of debt of $2.0 million, which consisted of the write-off of $2.6 million of unamortized discount and financing costs, the reversal of the $2.0 million CB warrants (defined below) liability and the prepayment penalty and other extinguishment costs of $1.4 million.

2019 Refinancing Agreement - 2019 Term Loans

On April 12, 2019 (the “2019 Refinancing Closing Date”), LFS entered into a financing agreement (the “2019 Refinancing Agreement”) with the lenders thereto and Cortland Capital Market Services LLC, as collateral agent and administrative agent and CB Agent Services LLC (“CB”), as origination agent. The 2019 Refinancing Agreement consisted of (i) a $40.0 million term loan (the “2019 Refinancing Term Loan”) and (ii) a new $25.0 million multi-draw delayed draw term loan (the “2019 Delayed Draw Term Loan” and, collectively with the 2019 Refinancing Term Loan, the “2019 Term Loans”). On November

14, 2019, the Company entered into an amendment to the 2019 Refinancing Agreement which, among other things, amended the interest rate and certain covenants in the 2019 Refinancing Agreement.

Prior to its refinancing in February 2021, the 2019 Refinancing Agreement would have matured on April 12, 2022. Required amortization was $1.0 million per quarter and commenced with the fiscal quarter ending September 30, 2020. There was an unused line fee of 2.0% per annum on the undrawn portion of the 2019 Delayed Draw Term Loan, and there was a make-whole premium on prepayments made prior to the 19-month anniversary of the 2019 Refinancing Closing Date. This make-whole provision guaranteed that the Company would pay no less than 18 months’ applicable interest to the lenders under the 2019 Refinancing Agreement.

The interest rate on borrowings under the 2019 Refinancing Agreement was, at the option of LFS and its subsidiaries, either LIBOR (with a 2.00% floor) plus 11.00% or a base rate (with a 3.00% minimum) plus 10.00%. At the 2021 Refinancing Date, the interest rate in effect on the 2019 Refinancing Term Loan was 13.00%.

2019 Refinancing Agreement - CB Warrants

In connection with the 2019 Refinancing Agreement, on the 2019 Refinancing Closing Date, the Company issued to CB and the other lenders under the 2019 Refinancing Agreement warrants (the “CB Warrants”) to purchase up to a maximum of 263,314 shares of the Company's common stock at an exercise price of $7.63 per share subject to certain adjustments, including for stock dividends, stock splits or reclassifications. The actual number of shares of common stock into which the CB Warrants were exercisable at any given time were equal to: (i) the product of (x) the number of shares equal to 2% of the Company’s issued and outstanding shares of common stock on the 2019 Refinancing Closing Date on a fully diluted basis and (y) the percentage of the total 2019 Delayed Draw Term Loan made as of the exercise date, minus (ii) the number of shares previously issued under the CB Warrants. As of the 2019 Refinancing Closing Date through the 2021 Refinancing Date, no amounts had been drawn on the 2019 Delayed Draw Term Loan, so no portion of the CB Warrants were exercisable. The CB Warrants were to be exercised for cash or on a “cashless basis,” subject to certain adjustments, at any time after the 2019 Refinancing Closing Date until the expiration of such warrant at 5:00 p.m., New York time, on the earlier of (i) the five (5) year anniversary of the 2019 Refinancing Closing Date, or (ii) the liquidation of the Company.  

For the period from January 1, 2021 through the 2021 Refinancing Date, the Company recorded interest expense for the amortization of the CB Warrants liability and embedded derivative debt discounts of $0.1 million and recorded an additional $0.1 million of interest expense for the amortization of the debt issuance costs.

2019 ABL Credit Agreement

On the 2019 Refinancing Closing Date, LFS also entered into a financing agreement with the lenders thereto and Citizens Bank, N.A., as collateral agent, administrative agent and origination agent (the “2019 ABL Credit Agreement” and, together with the 2019 Refinancing Agreement, the “Refinancing Agreements”). The 2019 ABL Credit Agreement consisted of a $15.0 million revolving credit facility (the “2019 Revolving Credit Facility”). Proceeds of the 2019 Revolving Credit Facility were to be used for general corporate purposes. On the 2019 Refinancing Closing Date, the Company entered into an amendment to the 2019 ABL Credit Agreement (as amended, 2019 ABL Credit Amendment Number One and Waiver), which amended certain provisions under the 2019 ABL Credit Agreement.

The interest rate on borrowings under the 2019 ABL Credit Agreement was, at the option of LFS and its subsidiaries, either LIBOR (with a 2.0% floor) plus an applicable margin ranging from 3.00% to 3.50% or a base rate (with a 3.0% minimum) plus an applicable margin ranging from 2.00% to 2.50%. At the 2021 Refinancing Date, the interest rate in effect on the 2019 ABL Credit Agreement was 5.25%.

As of the 2021 Refinancing Date, the Company had irrevocable letters of credit in the amount of $3.4 million with its lender to secure obligations under its self-insurance program. Prior to its refinancing in February 2021, the 2019 ABL Agreement would have matured in April 2022.

Wintrust Term and Revolving Loans

On the 2021 Refinancing Date, LFS, LHLLC and the direct and indirect subsidiaries of LFS from time to time included as parties to the agreement (the “Wintrust Guarantors”) entered into a credit agreement (the “Wintrust Credit Agreement”) by and among the LFS, LHLLC, Wintrust Guarantors, the lenders party thereto from time to time, Wheaton Bank & Trust Company, N.A., a subsidiary of Wintrust Financial Corporation (collectively, “Wintrust”), as administrative agent and L/C issuer, Bank of the West as documentation agent, M&T Bank as syndication agent, and Wintrust as lead arranger and sole book runner.

In accordance with the terms of the Wintrust Credit Agreement, Lenders provided to LFS (i) a $30.0 million senior secured term loan (the “Wintrust Term Loan”); and (ii) a $25.0 million senior secured revolving credit facility with a $5.0 million

sublimit for the issuance of letters of credit (the “Wintrust Revolving Loan” and, together with the Wintrust Term Loan, the “Wintrust Loans”). Proceeds of the Wintrust Loans were used to refinance certain existing indebtedness, finance working capital and other general corporate purposes and fund certain fees and expenses associated with the closing of the Wintrust Loans.

The Wintrust Revolving Loan initially bore interest, at LFS’s option, at either LIBOR (with a 0.25% floor) plus 3.5% or a base rate (with a 3.0% floor) plus 0.50%, subject to a 50 basis point step-down based on the ratio between the senior debt of the Company and its subsidiaries to the EBITDA (earnings before interest, income taxes, depreciation and amortization) of the LFS and its subsidiaries for the most recently ended four fiscal quarters. The Wintrust Term Loan initially bore interest, at LFS’s option, at either LIBOR (with a 0.25% floor) plus 4.0% or a base rate (with a 3.0% floor) plus 1.00%, subject to a 50 (for LIBOR) or 75 (for base rate) basis point step-down based on the Senior Leverage Ratio.

LFS was initially required to make principal payments on the Wintrust Term Loan in $0.5 million installments on the last business day of each month commencing on March 31, 2021 with a final payment of all principal and interest not sooner paid on the Wintrust Term Loan due and payable on February 24, 2026.

In conjunction with the Jake Marshall Transaction, the Company entered into an amendment to the Wintrust Credit Agreement (the “A&R Wintrust Credit Agreement”). In accordance with the terms of the A&R Credit Agreement, Lenders provided to LFS (i) a $35.5 million senior secured term loan (the “A&R Wintrust Term Loan”); and (ii) a $25 million senior secured revolving credit facility with a $5 million sublimit for the issuance of letters of credit (the “A&R Wintrust Revolving Loan” and, together with the Term Loan, the “A&R Wintrust Loans”). The overall Wintrust Term Loan commitment under the A&R Wintrust Credit Agreement was recast at $35.5 million in connection with the A&R Credit Agreement. A portion of the A&R Wintrust Term Loan commitment was used to fund the closing purchase price of the Jake Marshall Transaction. The A&R Credit Agreement was also amended to: (i) permit the Company to undertake the Jake Marshall Transaction (ii) make certain adjustments to the covenants under the A&R Credit Agreement (which were largely done to make certain adjustments for the Jake Marshall Transaction) (iii) allow for the Earnout Payments under the Jake Marshall Transaction and (iv) make other corresponding changes to the A&R Credit Agreement.

The A&R Wintrust Revolving Loan bears interest, at LFS’s option, at either Term SOFR (as defined in the A&R Credit Agreement) (with a 0.15% floor) plus 3.60%, 3.76% or 3.92% for a tenor of one month, three months or six months, respectively, or a base rate (as set forth in the A&R Credit Agreement) (with a 3.0% floor) plus 0.50%, subject to a 50 basis point step-down based on the ratio between the senior debt of the Company and its subsidiaries to the EBITDA of LFS and its subsidiaries for the most recently ended four fiscal quarters (the “Senior Leverage Ratio”). The A&R Wintrust Term Loan bears interest, at LFS’s option, at either Term SOFR (with a 0.15% floor) plus 4.10%, 4.26% or 4.42% for a tenor of one month, three months or six months, respectively, or a base rate (with a 3.0% floor) plus 1.00%, subject to a 50 (for Term SOFR) or 75 (for base rate) basis point step-down based on the Senior Leverage Ratio. At June 30, 2022 and 2021, the interest rate in effect on the Wintrust Term Loan was 5.75% and 4.25%, respectively. For the three and six months ended June 30, 2022, the Company incurred interest on the A&R Wintrust Term Loan at a weighted average annual interest rate of 4.90% and 4.57%, respectively.

The A&R Wintrust Term Loan is payable through a combination of (i) monthly installments of approximately $0.6 million due on the last business day of each month commencing on December 31, 2021, (ii) annual Excess Cash Flow payments as defined in the A&R Wintrust Credit Agreement, which are due 120 days after the last day of the Company's fiscal year and (iii) Net Claim Proceeds from Legacy Claims as defined in the A&R Wintrust Credit Agreement. Subject to defaults and remedies under the A&R Credit Agreement, the final payment of all principal and interest not sooner paid on the A&R Wintrust Term Loan is due and payable on February 24, 2026. Subject to defaults and remedies under the A&R Credit Agreement, the A&R Wintrust Revolving Loan matures and becomes due and payable by LFS on February 24, 2026. During the second quarter of 2022, the Company made certain Excess Cash Flow and Net Claim Proceeds payments of $3.3 million and $2.1 million, respectively, which concurrently reduced the outstanding A&R Wintrust Term Loan balance.

The A&R Wintrust Loans are secured by (i) a valid, perfected and enforceable lien of the administrative agent on the ownership interests held by each of LFS and Wintrust Guarantors in their respective subsidiaries; and (ii) a valid, perfected and enforceable lien of the administrative agent on each of LFS and Wintrust Guarantors’ personal property, fixtures and real estate, subject to certain exceptions and limitations. Additionally, the re-payment of the A&R Wintrust Loans shall be jointly and severally guaranteed by each Wintrust Guarantor.

The A&R Credit Agreement contains representations and warranties, covenants and events of default that are customary for facilities of this type, as more particularly described in the A&R Credit Agreement. The A&R Wintrust Loans also contain three financial maintenance covenants, including (i) a requirement to have as of the last day of each quarter for the senior leverage ratio of the Company and its subsidiaries not to exceed an amount beginning at 2.00 to 1.00, (ii) a fixed charge coverage ratio of not less than 1.20 to 1.00 as of the last day of each fiscal quarter commencing with the fiscal quarter ending December 31,

2021, and (iii) no unfinanced capital expenditures, except for unfinanced capital expenditures in the ordinary course of business not exceeding in the aggregate $4.0 million during any fiscal year; and no default or event of default (as defined by the agreement) has occurred and is continuing, 50% of any portion of this annual limit, if not expended in the fiscal year for which it is permitted, may be carried over for expenditure in the next following fiscal year as stipulated by the agreement. LFS and its affiliates maintain various commercial and service relationships with certain members of the syndicate and their affiliates in the ordinary course of business.

On May 5, 2022, the Company, LFS and LHLLC entered into a first amendment and waiver to the A&R Wintrust Credit Agreement (the “First Amendment to the A&R Wintrust Credit Agreement”) with the lenders party thereto and Wintrust, as administrative agent. The First Amendment to the A&R Wintrust Credit Agreement modifies certain definitions within the A&R Wintrust Credit Agreement, and make other corresponding changes, including: (i) the definition of EBITDA to allow for the recognition of certain restructuring charges and lease breakage costs not previously specified, (ii) the definition of Excess Cash Flow to exclude the aggregate amount of the Earnout Payments paid in cash, (iii) the definition of Total Funded Debt to exclude certain capitalized lease obligations for real estate based on the approval of each lender and (iv) the definition of Disposition to include a clause for the sale and leaseback of certain real property based on the approval of each lender.

As of June 30, 2022, the Company had $3.5 million of borrowings outstanding under the A&R Wintrust Revolving Loan. The Company did not have any borrowings outstanding under the A&R Wintrust Revolving Loan as of December 31, 2021. During the three and six months ended June 30, 2022, the maximum outstanding borrowings under the A&R Wintrust Revolving Loan at any time was $3.5 million and $9.4 million, respectively, and the average daily balance was approximately $0.1 million for both periods. For the three and six months ended June 30, 2022, the Company incurred interest on the A&R Wintrust Revolving Loan at a weighted average annual interest rate of 4.91% and 4.37%, respectively. For the three and six months ended June 30, 2022, commitment fees of approximately $13 thousand and $27 thousand, respectively, were paid to maintain credit availability under the A&R Wintrust Revolving Loan. During the three months ended June 30, 2021 and for the period from the 2021 Refinancing Date through June 30 2021, the Company did not have any borrowings on the Wintrust Revolving Loan. For the three months ended June 30, 2021 and for the period from the 2021 Refinancing Date through June 30, 2021, commitment fees of approximately $14 thousand and $20 thousand, respectively, were paid to maintain credit availability under the Wintrust Revolving Loan.

At June 30, 2022, the Company had irrevocable letters of credit in the amount of $3.3 million with the lenders under the A&R Wintrust Credit Agreement to secure obligations under its self-insurance program.

The following is a summary of the applicable margin and commitment fees payable on the available A&R Wintrust Term Loan and A&R Wintrust Revolving Loan credit commitment:

Level	Senior Leverage Ratio	Additional Margin for Prime Rate loans		Additional Margin for Prime Revolving loans		Additional Margin for Eurodollar Term loans
I	Greater than 1.00 to 1.00	1.00	%	0.50	%	0.25	%
II	Less than or equal to 1.00 to 1.00	0.25	%	—	%	0.25	%

As of June 30, 2022, the Company was in compliance with all financial maintenance covenants as required by the A&R Wintrust Loans.

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Equity

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Equity

Equity

The Company’s second amended and restated certificate of incorporation currently authorizes the issuance of 100,000,000 shares of common stock, par value $0.0001, and 1,000,000 shares of preferred stock, par value $0.0001.

Warrants

In conjunction with the Company's initial public offering, the Company issued Public Warrants, Private Warrants and $15 Exercise Price Sponsor Warrants. The Company issued certain Merger Warrants and Additional Merger Warrants in conjunction with the Company's business combination with LHLLC in July 2016 (the “Business Combination”). On July 20, 2021, the Public Warrants, Private Warrants, and Additional Merger Warrants expired by their terms.

The following table summarizes the underlying shares of common stock with respect to outstanding warrants:

	June 30, 2022	December 31, 2021
$15 Exercise Price Sponsor Warrants(1)(2)	600,000	600,000
Merger Warrants(3)(4)	629,643	629,643
Total	1,229,643	1,229,643

(1)    Exercisable for one share of common stock at an exercise price of $15.00 per share (“$15 Exercise Price Sponsor Warrants”).

(2)    Issued under a warrant agreement dated July 15, 2014, between Continental Stock Transfer and Trust Company, as warrant agent, and the Company.

(3)    Exercisable for one share of common stock at an exercise price of $12.50 per share (“Merger Warrants”).

(4)    Issued to the sellers of LHLLC.

Incentive Plan

Upon the consummation of the Company's Business Combination, the Company adopted an omnibus incentive plan (the “Omnibus Incentive Plan”) for which all future equity awards will be granted thereunder.

On March 9, 2021, the Board of Directors approved certain amendments to the Company's Omnibus Incentive Plan (the “2021 Amended and Restated Omnibus Incentive Plan”) to increase the number of shares of the Company's common stock that may be issued pursuant to awards by 600,000, for a total of 2,250,000 shares, and extended the term of the plan so that it will expire on the tenth anniversary of the date the stockholders approve the 2021 Amended and Restated Omnibus Incentive Plan. The amendments were approved by the Company's stockholders at the Annual Meeting held on June 16, 2021.

On March 25, 2022, the Board of Directors approved certain additional amendments to the Company's Omnibus Incentive Plan (the “2022 Amended and Restated Omnibus Incentive Plan”) to increase the number of shares of the Company's common stock that may be issued pursuant to awards by 350,000, for a total of 2,600,000 shares, and extended the term of the plan so that it will expire on the tenth anniversary of the date the stockholders approve the 2022 Amended and Restated Omnibus Incentive Plan. The amendments were approved by the Company's stockholders at the Annual Meeting held on June 22, 2022.

See Note 14 for a discussion of the Company's management incentive plans for restricted stock units (“RSUs”) granted, vested, forfeited and remaining unvested.

Employee Stock Purchase Plan

Upon approval of the Company's stockholders on May 30, 2019, the Company adopted the Limbach Holdings, Inc. 2019 Employee Stock Purchase Plan (the “ESPP”). On January 1, 2020, the ESPP went into effect. The ESPP enables eligible employees, as defined by the ESPP, the right to purchase the Company's common stock through payroll deductions during consecutive subscription periods at a purchase price of 85% of the fair market value of a common share at the end of each offering period. Annual purchases by participants are limited to the number of whole shares that can be purchased by an amount equal to ten percent of the participant's compensation or $5,000, whichever is less. Each offering period of the ESPP lasts six months, commencing on January 1 and July 1 of each year. The amounts collected from participants during a subscription period are used on the exercise date to purchase full shares of common stock. Participants may withdraw from an offering before the exercise date and obtain a refund of amounts withheld through payroll deductions. Compensation cost, representing the 15% discount applied to the fair market value of common stock, is recognized on a straight-line basis over the six-month vesting period during which employees perform related services. Under the ESPP, 500,000 shares are authorized to be issued. In January 2022, the Company issued 12,898 shares of its common stock to participants in the ESPP who contributed to the plan during the offering period ending December 31, 2021. In January 2021, the Company issued a total of 8,928 shares of its common stock to participants in the ESPP who contributed to the plan during the offering period ending December 31, 2020. As of June 30, 2022, 431,209 shares remain available for future issuance under the ESPP.

2021 Public Offering

On February 10, 2021 the Company entered into an underwriting agreement (“Underwriting Agreement”) with Lake Street Capital Markets, LLC (“Underwriter”) relating to an underwritten public offering (the “2021 Public Offering”). On February 12, 2021, the Company sold to the Underwriter 1,783,500 shares of its Common Stock. The Underwriting Agreement provided for purchase and sale of the Shares by the company to the Underwriter at a price of $11.28 per share. The price to the public in the 2021 Public Offering was $12.00 per share. In addition, under the terms of the Underwriting Agreement, the Company granted the Underwriter a 30-day option to purchase up to an additional 267,525 shares of Common Stock to cover over-allotments, if any, on the same terms and conditions. The net proceeds to the Company from the 2021 Public Offering after deducting the underwriting discounts and commissions were approximately $19.8 million. On February 18, 2021, the Company received approximately $3.0 million of net proceeds for the sale of 267,525 shares in connection with the exercise of the over-allotment option.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Company measures the fair value of financial assets and liabilities in accordance with ASC Topic 820 – Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value and requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

•Level 1 — inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date;

•Level 2 — inputs other than quoted prices included in Level 1 that are observable for the asset or liability either directly or indirectly such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities; and

•Level 3 — unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The Company believes that the carrying amounts of its financial instruments, including cash and cash equivalents, trade accounts receivable and accounts payable, consist primarily of instruments without extended maturities, which approximate fair value primarily due to their short-term maturities and low risk of counterparty default. The Company also believes that the carrying values of the A&R Wintrust Term Loan and the A&R Wintrust Revolving Loan approximate their respective fair values due to the variable rates on such debt. As of June 30, 2022, the Company determined that the fair value of the A&R Wintrust Term Loan was $25.7 million and the A&R Wintrust Revolving Loan was $3.5 million. Such fair value was determined using discounted estimated future cash flows using level 3 inputs.

As a part of the total consideration for the Jake Marshall Transaction, the Company initially recognized $3.1 million in contingent consideration, of which the entire balance was included in other long-term liabilities in the Company’s condensed consolidated balance sheet on the Effective Date. The fair value of contingent Earnout Payments is based on generating growth rates on the projected gross margins of the Acquired Entities and calculating the associated contingent payments based on achieving the earnout targets, which are reassessed each reporting period. Based on the Company’s ongoing assessment of the fair value of contingent earnout liability, the Company recorded a net increase in the estimated fair value of such liabilities of $0.8 million for the three months ended June 30, 2022, which was presented in change in fair value of contingent consideration in the Company's condensed consolidated statements of operations. The Company has assessed the maximum estimated exposure to the contingent earnout liabilities to be approximately $3.9 million at June 30, 2022, of which approximately $2.5 million was included in accrued expenses and other current liabilities and approximately $1.4 million was included in other long-term liabilities.

The Company determines the fair value of the Earnout Payments by utilizing the Monte Carlo Simulation method, which represents a Level 3 measurement. The Monte Carlo Simulation method models the probability of different financial results of the Acquired Entities during the earn-out period, utilizing a discount rate, which reflects a credit spread over the term-adjusted continuous risk-free rate. As of June 30, 2022 and the Effective Date, the Earnout Payments associated with the Jake Marshall Transaction were valued utilizing a discount rate of 8.80% and 6.83%, respectively. The discount rate was calculated using the build-up method with a risk-free rate commensurate with the term of the Earnout Payments based on the U.S. Treasury Constant Maturity Yield.

Prior to its termination as a result of the 2021 Refinancing, the Company's CB Warrants were determined using the Black-Scholes-Merton option pricing model. The valuation inputs included the quoted price of the Company’s common stock in an active market, volatility and expected life of the warrants, which were considered Level 3 inputs. The CB Warrants liability was included in other long-term liabilities on the Company's Condensed Consolidated Balance Sheets. The Company remeasured the fair value of the CB Warrants liability as of February 24, 2021 and recorded any adjustments to other income (expense). Prior to its extinguishment, the CB Warrants liability was $2.0 million. Due to the extinguishment of the CB Warrants on the 2021 Refinancing Date, there was no liability associated with the CB Warrants. For the period from January 1, 2021 through the 2021 Refinancing Date, the Company recorded other income of $14 thousand to reflect the change in the CB Warrants liability.

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Earnings per Share

6 Months Ended

Jun. 30, 2022

Earnings Per Share [Abstract]

Earnings per Share

Earnings per Share

Earnings per Share

The Company calculates earnings per share in accordance with ASC Topic 260 - Earnings Per Share (“EPS”). Basic earnings per common share applicable to common stockholders is computed by dividing earnings applicable to common stockholders by the weighted-average number of common shares outstanding and assumed to be outstanding. Diluted EPS assumes the dilutive effect of outstanding common stock warrants, shares issued in conjunction with the Company’s ESPP and RSUs, all using the treasury stock method.

The following table sets forth the computation of the basic and diluted earnings per share attributable to the Company's common shareholders for the three and six months ended June 30, 2022 and 2021:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands, except per share amounts)	2022		2021		2022		2021
EPS numerator:
Net income (loss)	$	866	$	732	$	(650)	$	(1,550)
EPS denominator:
Weighted average shares outstanding – basic	10,423		10,252		10,422		9,738
Impact of dilutive securities(1)	144		217		—		—
Weighted average shares outstanding – diluted	10,567		10,469		10,422		9,738
EPS:
Basic	$	0.08	$	0.07	$	(0.06)	$	(0.16)
Diluted	$	0.08	$	0.07	$	(0.06)	$	(0.16)

(1)    For the six months ended June 30, 2022 and 2021, the Company excluded 150,420 and 225,974, respectively, of potentially dilutive securities related to certain of the Company's outstanding common stock warrants, shares issued in conjunction with the Company's ESPP and nonvested RSUs. These securities were excluded from the computation as their effect would have been anti-dilutive. As a result, the computations of net loss per share for the six months ended June 30, 2022 and 2021 is the same for both basic and diluted.

The following table summarizes the securities that were antidilutive or out-of-the-money, and therefore, were not included in the computations of diluted income per common share:

	Three Months Ended June 30,		Six Months Ended June 30,
	2022	2021	2022	2021
In-the-money warrants	—	—	—	—
Out-of-the-money warrants (see Note 7)	1,229,643	4,403,930	1,229,643	4,403,930
Service-based RSUs (See Note 14)	17,595	334	72,871	142,120
Performance and market-based RSUs(1)	48,229	13,929	85,969	79,971
Employee Stock Purchase Plan	—	—	8,451	4,778
Total	1,295,467	4,418,193	1,396,934	4,630,799

(1)    For the three and six months ended June 30, 2022 and 2021, certain MRSU awards (each defined in Note 14) were not included in the computation of diluted income per common share because the performance and market conditions were not satisfied during the periods and would not be satisfied if the reporting date was at the end of the contingency period.

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Income Taxes

6 Months Ended

Jun. 30, 2022

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company is taxed as a C corporation.

For interim periods, the provision for income taxes (including federal, state, local and foreign taxes) is calculated based on the estimated annual effective tax rate, adjusted for certain discrete items for the full fiscal year. Cumulative adjustments to the Company's estimate are recorded in the interim period in which a change in the estimated annual effective rate is determined.

Each quarter the Company updates its estimate of the annual effective tax rate, and if its estimated tax rate changes, the Company makes a cumulative adjustment.

The following table presents our income tax provision (benefit) and our income tax rate for the three and six months ended June 30, 2022 and 2021.

	Three Months Ended June 30,						Six Months Ended June 30,
(in thousands, except percentages)	2022			2021			2022			2021
Income tax provision (benefit)	$	237		$	264		$	(379)		$	(771)
Income tax rate	21.5		%	26.5		%	36.8		%	33.2		%

The difference in the effective tax rate was the result of certain discrete tax items. During the three months ended June 30, 2022, the Company recorded discrete tax items of approximately $0.1 million related to a retroactive change in a state income tax rate. No discrete tax items were recorded for the three months ended June 30, 2021. For the six months ended June 30, 2022 and 2021, the Company recorded discrete tax items of approximately $0.1 million and $0.2 million, respectively, related to excess tax benefits associated with stock-based compensation.

No valuation allowance was required as of June 30, 2022 or December 31, 2021.

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Operating Segments

6 Months Ended

Jun. 30, 2022

Segment Reporting [Abstract]

Operating Segments

Operating Segments

As discussed in Note 1, the Company operates in two segments, (i) GCR, in which the Company generally manages new construction or renovation projects that involve primarily HVAC, plumbing, or electrical services awarded to the Company by general contractors or construction managers, and (ii) ODR, in which the Company provides maintenance or service primarily on HVAC, plumbing or electrical systems, building controls and specialty contracting projects direct to, or assigned by, building owners or property managers. These segments are reflective of how the Company’s Chief Operating Decision Maker (“CODM”) reviews operating results for the purposes of allocating resources and assessing performance. The Company's CODM is comprised of its Chief Executive Officer, Chief Financial Officer and Chief Operating Officer.

The CODM evaluates performance based on income from operations of the respective branches after the allocation of Corporate office operating expenses. In accordance with ASC Topic 280 – Segment Reporting, the Company has elected to aggregate all of the construction branches into one GCR reportable segment and all of the service branches into one ODR reportable segment. All transactions between segments are eliminated in consolidation. The Company's corporate department provides general and administrative support services to its two operating segments. The CODM allocates costs between segments for selling, general and administrative expenses and depreciation expense.

All of the Company’s identifiable assets are located in the United States, which is where the Company is domiciled. Interest expense is not allocated to segments because of the corporate management of debt service including interest.

Condensed consolidated segment information for the three and six months ended June 30, 2022 and 2021 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2022		2021		2022		2021
Statement of Operations Data:
Revenue:
GCR	$	66,336	$	87,550	$	138,268	$	172,354
ODR	49,784		33,469		92,674		62,009
Total revenue	116,120		121,019		230,942		234,363
Gross profit:
GCR	8,694		8,885		17,052		18,280
ODR	12,626		9,805		22,608		17,639
Total gross profit	21,320		18,690		39,660		35,919
Selling, general and administrative:
GCR	7,980		9,070		16,545		18,184
ODR	10,135		7,526		19,705		14,880
Corporate	575		636		1,174		1,313
Total selling, general and administrative	18,690		17,232		37,424		34,377
Change in fair value of contingent consideration	765		—		765		—
Amortization of intangibles	399		104		798		208
Operating income	$	1,466	$	1,354	$	673	$	1,334
Less unallocated amounts:
Interest expense, net	(478)		(452)		(964)		(1,716)
Gain on disposition of property and equipment	147		94		111		8
Loss on early termination of operating lease	(32)		—		(849)		—
Loss on early debt extinguishment	—		—		—		(1,961)
Gain on change in fair value of warrant liability	—		—		—		14
Total unallocated amounts	(363)		(358)		(1,702)		(3,655)
Income (loss) before income taxes	$	1,103	$	996	$	(1,029)	$	(2,321)
Other Data:
Depreciation and amortization:
GCR	$	1,075	$	1,020	$	2,183	$	2,056
ODR	612		345		1,167		700
Corporate	399		104		798		208
Total other data	$	2,086	$	1,469	$	4,148	$	2,964

The Company does not identify capital expenditures and total assets by segment in its internal financial reports due in part to the shared use of a centralized fleet of vehicles and specialized equipment. Interest expense is also not allocated to segments because of the Company’s corporate management of debt service, including interest.

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Leases

6 Months Ended

Jun. 30, 2022

Leases [Abstract]

Leases

LeasesThe Company leases real estate, trucks and other equipment. The determination of whether an arrangement is, or contains, a lease is performed at the inception of the arrangement. Classification and initial measurement of the right-of-use asset and lease liability are determined at the lease commencement date. The Company elected the short-term lease measurement and recognition exemption; therefore, leases with an initial term of 12 months or less are not recorded on the condensed consolidated balance sheets. Instead, the short-term leases are recognized in expense on a straight-line basis over the lease term.

The Company's arrangements include certain non-lease components such as common area and other maintenance for leased real estate, as well as mileage, fuel and maintenance costs related to leased vehicles. For all leased asset classes, the Company has elected to not separate non-lease components from lease components and will account for each separate lease component and non-lease component associated with the lease as a single lease component. The Company does not guarantee any residual value in its lease agreements, and there are no material restrictions or covenants imposed by lease arrangements. Real estate leases typically include one or more options to extend the lease. The Company regularly evaluates the renewal options, and when they are reasonably certain of exercise, the Company includes the renewal period in its lease term. For the Company's leased vehicles, the Company uses the interest rate implicit in its leases with the lessor to discount lease payments at the lease commencement date. When the implicit rate is not readily available, as is the case with the Company's real estate leases, the Company uses quoted borrowing rates on its secured debt.

Related Party Lease Agreement. In conjunction with the closing of the Jake Marshall Transaction, the Company entered into an operating lease for certain land and facilities owned by a former member of JMLLC who became a full-time employee of the Company. The lease term is 10 years and includes an option to extend the lease for two successive periods of two years each through November 2035. Base rent for the term of the lease is $37,500 per month for the first five years with payment commencing on January 1, 2022. The fixed rent payment is escalated to $45,000 per month for years 6 through 10 of the lease term. Fixed rent payments for the extension term shall be increased from $45,000 by the percentage increase, if any, in the consumer price index from the lease commencement date. In addition, under the agreement, the Company is required to pay its share of estimated property taxes and operating expenses, both of which are variable lease expenses.

Southern California Sublease. In June, 2021, the Company entered into a sublease agreement with a third party for the entire ground floor of its leased space in Southern California, consisting of 71,787 square feet. Under the terms of the sublease agreement, the sublessee is obligated to pay the Company base rent of approximately $0.6 million per year, which is subject to a 3.0% annual rent increase, plus certain operating expenses and other costs. The initial lease term commenced in September 2021 and continues through April 30, 2027. As of June 30, 2022, the Company remains obligated under the original lease for such office space and, in the event the subtenant of such office space fails to satisfy its obligations under the sublease, the Company would be required to satisfy its obligations directly to the landlord under such original lease.

In addition, during the first quarter of 2022, the Company entered into an amendment to the aforementioned sublease agreement, which, among other things, expanded the sublease premises to include the entire second floor of its leased space in Southern California, consisting of 16,720 square feet. Under the terms of the amended sublease agreement, the sublessee is obligated to pay the Company base rent of approximately $0.8 million per year, which is subject to a 3.0% annual rent increase, plus certain operating expenses and other costs. The amended sublease term commenced in March 2022 and continues through April 30, 2027. For the three and six months ended June 30, 2022, the Company recorded approximately $0.2 million and $0.4 million of income in selling, general and administrative expenses related to this sublease agreement.

Pittsburgh Lease Termination. In March, 2022, the Company entered into a lease termination agreement (the “Lease Termination Agreement”) to terminate, effective March 31, 2022, the lease associated with the Company’s office space located in Pittsburgh, Pennsylvania, which previously served as its corporate headquarters. Absent the Lease Termination Agreement, the lease would have expired in accordance with its terms in July 2025. Pursuant to the Lease Termination Agreement, in exchange for allowing the Company to terminate the lease early, the Company agreed to pay a termination fee in the aggregate of approximately $0.7 million in 16 equal monthly installments commencing on April 1, 2022. The Company recognized the full termination fee expense during the first quarter of 2022.

In connection with the lease termination, the Company recognized a gain of $0.1 million associated with the derecognition of the operating lease right-of-use asset and corresponding operating lease liabilities associated with the operating lease and recorded a $0.1 million loss on the disposal of leasehold improvements and moving expenses.

The following table summarizes the lease amounts included in the Company's condensed consolidated balance sheets:

(in thousands)	Classification on the Condensed Consolidated Balance Sheets	June 30, 2022		December 31, 2021
Assets
Operating	Operating lease right-of-use assets(1)	$	16,644	$	20,119
Finance	Property and equipment, net(2)	5,474		4,916
Total lease assets		$	22,118	$	25,035
Liabilities
Current
Operating	Current operating lease liabilities	$	3,415	$	4,366
Finance	Current portion of long-term debt	2,465		2,451
Noncurrent
Operating	Long-term operating lease liabilities	14,086		16,576
Finance	Long-term debt	3,200		2,681
Total lease liabilities		$	23,166	$	26,074

(1)     Operating lease assets are recorded net of accumulated amortization of $15.0 million at June 30, 2022 and $15.9 million at December 31, 2021.

(2)    Finance lease assets are recorded net of accumulated amortization of $6.0 million at June 30, 2022 and $5.9 million at December 31, 2021.

The following table summarizes the lease costs included in the Company's condensed consolidated statements of operations for the three and six months ended June 30, 2022 and 2021:

		Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	Classification on the Condensed Consolidated Statement of Operations	2022		2021		2022		2021
Operating lease cost	Cost of revenue(1)	$	657	$	685	$	1,351	$	1,375
Operating lease cost	Selling, general and administrative(1)	631		584		1,335		1,169
Finance lease cost
Amortization	Cost of revenue(2)	685		652		1,336		1,327
Interest	Interest expense, net(2)	66		78		132		164
Total lease cost		$	2,039	$	1,999	$	4,154	$	4,035

(1)    Operating lease costs recorded in cost of revenue included $0.1 million of variable lease costs for each of the three months ended June 30, 2022 and 2021, and $0.2 million for each of the six months ended June 30, 2022 and 2021. In addition, $0.1 million of variable lease costs are included in selling, general and administrative for each of the three months ended June 30, 2022 and 2021, and $0.2 million for each of the six months ended June 30, 2022 and 2021. These variable costs consist of the Company's proportionate share of operating expenses, real estate taxes and utilities.

(2)     Finance lease costs recorded in cost of revenue include variable lease costs of $1.0 million and $0.7 million for the three months ended June 30, 2022 and 2021, respectively, and $1.8 million and $1.3 million for the six months ended June 30, 2022 and 2021, respectively. These variable lease costs consist of fuel, maintenance, and sales tax charges.

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2022 were as follows:

			Operating Leases
Year ending (in thousands):	Finance Leases		Non-Related Party		Related Party(1)		Sublease Receipts(2)		Total Operating
Remainder of 2022	$	1,353	$	2,104	$	225	$	(435)	$	1,894
2023	1,990		3,108		450		(885)		2,673
2024	1,274		2,502		450		(912)		2,040
2025	777		2,148		450		(939)		1,659
2026	271		2,010		450		(967)		1,493
Thereafter	—		2,033		4,815		(327)		6,521
Total minimum lease payments	$	5,665	$	13,905	$	6,840	$	(4,465)	$	16,280
Amounts representing interest	397
Present value of net minimum lease payments	$	6,062

(1)    Associated with the aforementioned related party lease entered into with a former member of JMLLC.

(2)    Associated with the aforementioned third party sublease.

The following is a summary of the lease terms and discount rates:

	June 30, 2022		December 31, 2021
Weighted average lease term (in years):
Operating	7.29		7.10
Finance	2.78		2.51
Weighted average discount rate:
Operating	4.67	%	4.68	%
Finance	4.99	%	5.27	%

The following is a summary of other information and supplemental cash flow information related to finance and operating leases:

	Six months ended June 30,
(in thousands)	2022		2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,619	$	2,456
Operating cash flows from finance leases	132		164
Financing cash flows from finance leases	1,358		1,318
Right-of-use assets exchanged for lease liabilities:
Operating leases	—		156
Finance leases	1,968		336
Right-of-use assets disposed or adjusted modifying operating leases liabilities	(1,276)		36
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$	(77)	—

Leases

LeasesThe Company leases real estate, trucks and other equipment. The determination of whether an arrangement is, or contains, a lease is performed at the inception of the arrangement. Classification and initial measurement of the right-of-use asset and lease liability are determined at the lease commencement date. The Company elected the short-term lease measurement and recognition exemption; therefore, leases with an initial term of 12 months or less are not recorded on the condensed consolidated balance sheets. Instead, the short-term leases are recognized in expense on a straight-line basis over the lease term.

The Company's arrangements include certain non-lease components such as common area and other maintenance for leased real estate, as well as mileage, fuel and maintenance costs related to leased vehicles. For all leased asset classes, the Company has elected to not separate non-lease components from lease components and will account for each separate lease component and non-lease component associated with the lease as a single lease component. The Company does not guarantee any residual value in its lease agreements, and there are no material restrictions or covenants imposed by lease arrangements. Real estate leases typically include one or more options to extend the lease. The Company regularly evaluates the renewal options, and when they are reasonably certain of exercise, the Company includes the renewal period in its lease term. For the Company's leased vehicles, the Company uses the interest rate implicit in its leases with the lessor to discount lease payments at the lease commencement date. When the implicit rate is not readily available, as is the case with the Company's real estate leases, the Company uses quoted borrowing rates on its secured debt.

Related Party Lease Agreement. In conjunction with the closing of the Jake Marshall Transaction, the Company entered into an operating lease for certain land and facilities owned by a former member of JMLLC who became a full-time employee of the Company. The lease term is 10 years and includes an option to extend the lease for two successive periods of two years each through November 2035. Base rent for the term of the lease is $37,500 per month for the first five years with payment commencing on January 1, 2022. The fixed rent payment is escalated to $45,000 per month for years 6 through 10 of the lease term. Fixed rent payments for the extension term shall be increased from $45,000 by the percentage increase, if any, in the consumer price index from the lease commencement date. In addition, under the agreement, the Company is required to pay its share of estimated property taxes and operating expenses, both of which are variable lease expenses.

Southern California Sublease. In June, 2021, the Company entered into a sublease agreement with a third party for the entire ground floor of its leased space in Southern California, consisting of 71,787 square feet. Under the terms of the sublease agreement, the sublessee is obligated to pay the Company base rent of approximately $0.6 million per year, which is subject to a 3.0% annual rent increase, plus certain operating expenses and other costs. The initial lease term commenced in September 2021 and continues through April 30, 2027. As of June 30, 2022, the Company remains obligated under the original lease for such office space and, in the event the subtenant of such office space fails to satisfy its obligations under the sublease, the Company would be required to satisfy its obligations directly to the landlord under such original lease.

In addition, during the first quarter of 2022, the Company entered into an amendment to the aforementioned sublease agreement, which, among other things, expanded the sublease premises to include the entire second floor of its leased space in Southern California, consisting of 16,720 square feet. Under the terms of the amended sublease agreement, the sublessee is obligated to pay the Company base rent of approximately $0.8 million per year, which is subject to a 3.0% annual rent increase, plus certain operating expenses and other costs. The amended sublease term commenced in March 2022 and continues through April 30, 2027. For the three and six months ended June 30, 2022, the Company recorded approximately $0.2 million and $0.4 million of income in selling, general and administrative expenses related to this sublease agreement.

Pittsburgh Lease Termination. In March, 2022, the Company entered into a lease termination agreement (the “Lease Termination Agreement”) to terminate, effective March 31, 2022, the lease associated with the Company’s office space located in Pittsburgh, Pennsylvania, which previously served as its corporate headquarters. Absent the Lease Termination Agreement, the lease would have expired in accordance with its terms in July 2025. Pursuant to the Lease Termination Agreement, in exchange for allowing the Company to terminate the lease early, the Company agreed to pay a termination fee in the aggregate of approximately $0.7 million in 16 equal monthly installments commencing on April 1, 2022. The Company recognized the full termination fee expense during the first quarter of 2022.

In connection with the lease termination, the Company recognized a gain of $0.1 million associated with the derecognition of the operating lease right-of-use asset and corresponding operating lease liabilities associated with the operating lease and recorded a $0.1 million loss on the disposal of leasehold improvements and moving expenses.

The following table summarizes the lease amounts included in the Company's condensed consolidated balance sheets:

(in thousands)	Classification on the Condensed Consolidated Balance Sheets	June 30, 2022		December 31, 2021
Assets
Operating	Operating lease right-of-use assets(1)	$	16,644	$	20,119
Finance	Property and equipment, net(2)	5,474		4,916
Total lease assets		$	22,118	$	25,035
Liabilities
Current
Operating	Current operating lease liabilities	$	3,415	$	4,366
Finance	Current portion of long-term debt	2,465		2,451
Noncurrent
Operating	Long-term operating lease liabilities	14,086		16,576
Finance	Long-term debt	3,200		2,681
Total lease liabilities		$	23,166	$	26,074

(1)     Operating lease assets are recorded net of accumulated amortization of $15.0 million at June 30, 2022 and $15.9 million at December 31, 2021.

(2)    Finance lease assets are recorded net of accumulated amortization of $6.0 million at June 30, 2022 and $5.9 million at December 31, 2021.

The following table summarizes the lease costs included in the Company's condensed consolidated statements of operations for the three and six months ended June 30, 2022 and 2021:

		Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	Classification on the Condensed Consolidated Statement of Operations	2022		2021		2022		2021
Operating lease cost	Cost of revenue(1)	$	657	$	685	$	1,351	$	1,375
Operating lease cost	Selling, general and administrative(1)	631		584		1,335		1,169
Finance lease cost
Amortization	Cost of revenue(2)	685		652		1,336		1,327
Interest	Interest expense, net(2)	66		78		132		164
Total lease cost		$	2,039	$	1,999	$	4,154	$	4,035

(1)    Operating lease costs recorded in cost of revenue included $0.1 million of variable lease costs for each of the three months ended June 30, 2022 and 2021, and $0.2 million for each of the six months ended June 30, 2022 and 2021. In addition, $0.1 million of variable lease costs are included in selling, general and administrative for each of the three months ended June 30, 2022 and 2021, and $0.2 million for each of the six months ended June 30, 2022 and 2021. These variable costs consist of the Company's proportionate share of operating expenses, real estate taxes and utilities.

(2)     Finance lease costs recorded in cost of revenue include variable lease costs of $1.0 million and $0.7 million for the three months ended June 30, 2022 and 2021, respectively, and $1.8 million and $1.3 million for the six months ended June 30, 2022 and 2021, respectively. These variable lease costs consist of fuel, maintenance, and sales tax charges.

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2022 were as follows:

			Operating Leases
Year ending (in thousands):	Finance Leases		Non-Related Party		Related Party(1)		Sublease Receipts(2)		Total Operating
Remainder of 2022	$	1,353	$	2,104	$	225	$	(435)	$	1,894
2023	1,990		3,108		450		(885)		2,673
2024	1,274		2,502		450		(912)		2,040
2025	777		2,148		450		(939)		1,659
2026	271		2,010		450		(967)		1,493
Thereafter	—		2,033		4,815		(327)		6,521
Total minimum lease payments	$	5,665	$	13,905	$	6,840	$	(4,465)	$	16,280
Amounts representing interest	397
Present value of net minimum lease payments	$	6,062

(1)    Associated with the aforementioned related party lease entered into with a former member of JMLLC.

(2)    Associated with the aforementioned third party sublease.

The following is a summary of the lease terms and discount rates:

	June 30, 2022		December 31, 2021
Weighted average lease term (in years):
Operating	7.29		7.10
Finance	2.78		2.51
Weighted average discount rate:
Operating	4.67	%	4.68	%
Finance	4.99	%	5.27	%

The following is a summary of other information and supplemental cash flow information related to finance and operating leases:

	Six months ended June 30,
(in thousands)	2022		2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,619	$	2,456
Operating cash flows from finance leases	132		164
Financing cash flows from finance leases	1,358		1,318
Right-of-use assets exchanged for lease liabilities:
Operating leases	—		156
Finance leases	1,968		336
Right-of-use assets disposed or adjusted modifying operating leases liabilities	(1,276)		36
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$	(77)	—

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2022

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Legal. The Company is continually engaged in administrative proceedings, arbitrations, and litigation with owners, general contractors, suppliers, and other unrelated parties, all arising in the ordinary courses of business. The ultimate resolution of these contingencies could, individually or in the aggregate, be material to the condensed consolidated financial statements. In the opinion of the Company’s management, the current belief is that the results of these actions will not have a material adverse effect on the financial position, results of operations, or cash flows of the Company.

On January 23, 2020, plaintiff, Bernards Bros. Inc. (“Bernards”), filed a complaint against the Company in Superior Court of the State of California for the County of Los Angeles. The complaint alleges that the Company's Southern California operations refused to honor a proposal made to Bernards to act as a subcontractor on a construction project, and that, as a result of the

wrongful failure to honor the proposal, Bernards suffered damages in excess of $3.0 million, including alleged increased costs for hiring a different subcontractor to perform the work. The Company is vigorously defending the suit. A non-binding mediation took place on August 19, 2021 that did not result in a settlement. Per the agreement of the Company and Bernards, in January 2022, the Court appointed a private referee to manage the case and adjudicate the dispute. A trial date has been set for January 2023. The Company believes that a loss is neither probable nor reasonably estimable for this matter, and, as such, has not recorded a loss contingency.

On April 17, 2020, plaintiff, LA Excavating, Inc., filed a complaint against the Company's wholly-owned subsidiary, Limbach Company LP, and several other parties, in Superior Court of the State of California, for the County of Los Angeles. The complaint sought damages of approximately $1.0 million for alleged failure to pay contract balances and extra work ordered by Limbach Company LP, as well as sought to enforce payment obligations under a payment bond. In April 2022, the parties settled for an immaterial amount and the case was dismissed.

On January 26, 2022, claimant, Suffolk Construction Company, Inc. (“Suffolk”) filed a Demand for Arbitration in Massachusetts against Boston Medical Center Corporation (“BMC”) and numerous of Suffolk’s trade subcontractors, including, the Company’s wholly-owned subsidiary, Limbach Company LLC, seeking to recover monies BMC withheld from Suffolk and its subcontractors based on an audit of project billings. Suffolk has demanded the Company defend and indemnify Suffolk against BMC’s audit findings that the Company overbilled the project just over $0.3 million and for the Company’s share of BMC’s audit costs, which share has not been, and cannot currently be, quantified. The Company disputes the findings of BMC’s audit and intends to vigorously defend the allegation that it overbilled the project. An arbitration hearing date has been set for February 2023. The Company believes that a loss is neither probable nor reasonably estimable for this matter, and, as such, has not recorded a loss contingency.

Surety. The terms of its construction contracts frequently require that the Company obtain from surety companies, and provide to its customers, payment and performance bonds (“Surety Bonds”) as a condition to the award of such contracts. The Surety Bonds secure its payment and performance obligations under such contracts, and the Company has agreed to indemnify the surety companies for amounts, if any, paid by them in respect of Surety Bonds issued on its behalf. In addition, at the request of labor unions representing certain of the Company's employees, Surety Bonds are sometimes provided to secure obligations for wages and benefits payable to or for such employees. Public sector contracts require Surety Bonds more frequently than private sector contracts, and accordingly, the Company's bonding requirements typically increase as the amount of public sector work increases. As of June 30, 2022, the Company had approximately $120.1 million in surety bonds outstanding. The Surety Bonds are issued by surety companies in return for premiums, which vary depending on the size and type of bond.

Collective Bargaining Agreements. Many of the Company’s craft labor employees are covered by collective bargaining agreements. The agreements require the Company to pay specified wages, provide certain benefits and contribute certain amounts to multi-employer pension plans. If the Company withdraws from any of the multi-employer pension plans or if the plans were to otherwise become underfunded, the Company could incur additional liabilities related to these plans. Although the Company has been informed that some of the multi-employer pension plans to which it contributes have been classified as “critical” status, the Company is not currently aware of any significant liabilities related to this issue.

Self-insurance. The Company is substantially self-insured for workers’ compensation and general liability claims, in the view of the relatively high per-incident deductibles the Company absorbs under its insurance arrangements for these risks. The Company purchases workers’ compensation and general liability insurance under policies with per-incident deductibles of $250,000 per occurrence and a $4.4 million maximum aggregate deductible loss limit per year. Losses incurred over primary policy limits are covered by umbrella and excess policies up to specified limits with multiple excess insurers. The Company accrues for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the consolidated balance sheets as current and non-current liabilities. The liability is determined by determining a reserve for each reported claim on a case-by-case basis based on the nature of the claim and historical loss experience for similar claims plus an allowance for the cost of incurred but not reported claims. The current portion of the liability is included in accrued expenses and other current liabilities on the consolidated balance sheet. The non-current portion of the liability is included in other long-term liabilities on the consolidated balance sheet.

The Company is self-insured related to medical and dental claims under policies with annual per-claimant and annual aggregate stop-loss limits. The Company accrues for the unfunded portion of costs for both reported claims and claims incurred but not reported. The liability for unfunded reported claims and future claims is reflected on the consolidated balance sheets as a current liability in accrued expenses and other current liabilities.

The components of the self-insurance liability as of June 30, 2022 and December 31, 2021 are as follows:

(in thousands)	June 30, 2022		December 31, 2021
Current liability — workers’ compensation and general liability	$	282	$	184
Current liability — medical and dental	415		456
Non-current liability	420		451
Total liability	$	1,117	$	1,091
Restricted cash	$	113	$	113

The restricted cash balance represents an imprest cash balance set aside for the funding of workers' compensation and general liability insurance claims. This amount is replenished either when depleted or at the beginning of each month.

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Management Incentive Plans

6 Months Ended

Jun. 30, 2022

Share-Based Payment Arrangement [Abstract]

Management Incentive Plans

Management Incentive Plans

The Company initially adopted the Omnibus Incentive Plan on July 20, 2016 for the purpose of: (a) encouraging the profitability and growth of the Company through short-term and long-term incentives that are consistent with the Company’s objectives; (b) giving participants an incentive for excellence in individual performance; (c) promoting teamwork among participants; and (d) giving the Company a significant advantage in attracting and retaining key employees, directors and consultants. To accomplish such purposes, the Omnibus Incentive Plan, and such subsequent amendments to the Omnibus Incentive Plan, provides that the Company may grant options, stock appreciation rights, restricted shares, RSUs, performance-based awards (including performance-based restricted shares and restricted stock units), other share based awards, other cash-based awards or any combination of the foregoing.

Following the approval of the 2022 Amended and Restated Omnibus Incentive Plan, the Company has reserved 2,600,000 shares of its common stock for issuance. The number of shares issued or reserved pursuant to the Omnibus Incentive Plan will be adjusted by the plan administrator, as they deem appropriate and equitable, as a result of stock splits, stock dividends, and similar changes in the Company’s common stock. In connection with the grant of an award, the plan administrator may provide for the treatment of such award in the event of a change in control. All awards are made in the form of shares only.

Service-Based Awards

The Company grants service-based stock awards in the form of RSUs. Service-based RSUs granted to executives, employees, and non-employee directors vest ratably, on an annual basis, over three years and in the case of certain awards to non-employee directors, one year. The grant date fair value of the service-based awards was equal to the closing market price of the Company’s common stock on the date of grant.

The following table summarizes the Company's service-based RSU activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	266,089	$	8.45
Granted	183,187	8.98
Vested	(120,401)	7.43
Forfeited	(24,604)	9.43
Unvested at June 30, 2022	304,271	$	9.10

Performance-Based Awards

The Company grants performance-based restricted stock units (“PRSUs”) under which shares of the Company’s common stock may be earned based on the Company’s performance compared to defined metrics. The number of shares earned under a performance award may vary from zero to 150% of the target shares awarded, based upon the Company’s performance compared to the metrics. The metrics used for the grant are determined by the Company’s Compensation Committee of the Board of Directors and are based on internal measures such as the achievement of certain predetermined adjusted EBITDA, EPS growth and EBITDA margin performance goals over a three year period.

The Company recognizes stock-based compensation expense for these awards over the vesting period based on the projected probability of achievement of the performance conditions as of the end of each reporting period during the performance period and may periodically adjust the recognition of such expense, as necessary, in response to any changes in the Company’s

forecasts with respect to the performance conditions. For the three and six months ended June 30, 2022 and 2021, the Company recognized $0.2 million and $0.4 million of stock-based compensation expense related to outstanding PRSUs.

The following table summarizes the Company's PRSU activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	280,700	$	9.46
Granted	254,854	7.17
Vested	—	—
Forfeited	(41,123)	8.98
Unvested at June 30, 2022	494,431	$	8.32

Market-Based Awards

The following table summarizes the Company's market-based RSU (“MRSUs”) activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	102,500	$	8.26
Granted	—	—
Vested	—	—
Forfeited	(8,000)	8.26
Unvested at June 30, 2022	94,500	$	8.26

The vesting of the MRSUs is contingent upon the Company’s closing price of a share of the Company's common stock on the Nasdaq Capital market, or such other applicable principal securities exchange or quotation system, achieving at least $18.00 over a period of eighty (80) consecutive trading days during the three-year period commencing on August 1, 2018 and concluding on July 31, 2021. On September 4, 2020, the Compensation Committee of the Board of Directors of the Company approved an amendment to extend the measurement period to July 16, 2022. These awards expired on July 16, 2022 as the MRSU award conditions were not achieved.

Total recognized stock-based compensation expense amounted to $0.6 million and $1.2 million for the three and six months ended June 30, 2022, respectively, and $0.7 million and $1.3 million for the three and six months ended June 30, 2021. The aggregate fair value as of the vest date of RSUs that vested during the six months ended June 30, 2022 and 2021 was $1.1 million and $1.3 million, respectively. Total unrecognized stock-based compensation expense related to unvested RSUs which are probable of vesting was $4.0 million at June 30, 2022. These costs are expected to be recognized over a weighted average period of 1.80 years.

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Subsequent Events	6 Months Ended
	Jun. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsIn July 2022, the Company entered into an interest rate swap agreement to manage the risk associated with a portion of its variable-rate long-term debt. The interest rate swap involves the exchange of fixed-rate and variable-rate payments without the exchange of the underlying notional amount on which the interest payments are calculated. The new swap agreement became effective on July 14, 2022 and will terminate on July 31, 2027. The notional amount of the swap agreement is $10.0 million with a fixed interest rate of 3.12%. If the one-month SOFR (as defined in the A&R Credit Agreement) is above the fixed rate, the counterparty pays the Company, and if the one-month SOFR is less the fixed rate, the Company pays the counterparty, the difference between the fixed rate of 3.12% and one-month SOFR.

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2022

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

References in these financial statements to the Company refer collectively to the accounts of Limbach Holdings, Inc. and its wholly-owned subsidiaries, including LHLLC, Limbach Facility Services LLC (“LFS”), Limbach Company LLC, Limbach Company LP, Harper Limbach LLC, Harper Limbach Construction LLC, Limbach Facility & Project Solutions LLC, Jake Marshall, LLC (“JMLLC”) and Coating Solutions, LLC (“CSLLC”) for all periods presented, unless otherwise indicated. All intercompany balances and transactions have been eliminated.

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) for interim financial information and with the requirements of Form 10-Q and Rule 8-03 of Regulation S-X for smaller reporting companies. Consequently, certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. Readers of this report should refer to the consolidated financial statements and the notes thereto included in the Company's most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on March 16, 2022.

Use of Estimates

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements for assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, the reported amounts of revenue and expenses during the reported period, and the accompanying notes. Management believes that its most significant estimates and assumptions have been based on reasonable and supportable assumptions and the resulting estimates are reasonable for use in the preparation of the condensed consolidated financial statements. The Company’s significant estimates include estimates associated with revenue recognition on construction contracts, costs incurred through each balance sheet date, intangibles, property and equipment, fair value accounting for acquisitions, insurance reserves, fair value of contingent consideration arrangements and contingencies. If the underlying estimates and assumptions upon which the condensed consolidated financial statements are based change in the future, actual amounts may differ from those included in the accompanying condensed consolidated financial statements.

Unaudited Interim Financial Information

Unaudited Interim Financial Information

The accompanying interim Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Stockholders’ Equity and Condensed Consolidated Statements of Cash Flows for the periods presented are unaudited. Also, within the notes to the condensed consolidated financial statements, the Company has

included unaudited information for these interim periods. These unaudited interim condensed consolidated financial statements have been prepared in accordance with GAAP. In the Company's opinion, the accompanying unaudited condensed consolidated financial statements contain all normal and recurring adjustments necessary for a fair statement of the Company’s financial position as of June 30, 2022, its results of operations and equity for the three and six months ended June 30, 2022 and 2021 and its cash flows for the six months ended June 30, 2022 and 2021. The results for the three and six months ended June 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022.

The Condensed Consolidated Balance Sheet as of December 31, 2021 was derived from the Company's audited financial statements included in its Annual Report on Form 10-K filed with the SEC on March 16, 2022, but is presented as condensed and does not contain all of the footnote disclosures from the annual financial statements.

Recently Adopted Accounting Standards and Recent Accounting Pronouncements

Recently Adopted Accounting Standards

In November 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which creates an exception to the general recognition and measurement principle for contract assets and contract liabilities from contracts with customers acquired in a business combination. Under this exception, an acquirer applies ASC 606, Revenue from Contracts with Customers, to recognize and measure contract assets and contract liabilities on the acquisition date. ASC 805 generally requires the acquirer in a business combination to recognize and measure the assets it acquires and the liabilities it assumes at fair value on the acquisition date. The changes are effective for annual periods beginning after December 15, 2022. The Company early adopted ASU 2021-08 in December 2021. The contract assets and contract liabilities associated with the Jake Marshall Transaction have been valued in accordance with this standard.

Recent Accounting Pronouncements

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments, which introduced an expected credit loss methodology for the measurement and recognition of credit losses on most financial instruments, including trade receivables and off-balance sheet credit exposure. Under this guidance, an entity is required to consider a broader range of information to estimate expected credit losses, which may result in earlier recognition of losses. This ASU also requires disclosure of information regarding how a company developed its allowance, including changes in the factors that influenced management’s estimate of expected credit losses and the reasons for those changes. The guidance is effective for smaller reporting companies on January 1, 2023 with early adoption permitted. The adoption of this standard will be through a cumulative-effect adjustment to retained earnings as of the effective date. Based on its historical experience, the Company does not expect that this pronouncement will have a significant impact in its condensed consolidated financial statements or on the estimate of the allowance for doubtful accounts.

The FASB has issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting in March 2020. This new guidance provides optional expedients for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform, on financial reporting. The risk of termination of the London Interbank Offered Rate (LIBOR), has caused regulators to undertake reference rate reform initiatives to identify alternative reference rates that are more observable or transaction based that are less susceptible to manipulation. ASU 2020-04 is effective between March 12, 2020 and December 31, 2022.

In addition, in January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope. The amendments in this update refine the scope for certain optional expedients and exceptions for contract modifications and hedge accounting to apply to derivative contracts and certain hedging relationships affected by the discounting transition. An entity may elect to apply the amendments in this update from the beginning of an interim period beginning as of March 12, 2020, through December 31, 2022. The Company is currently evaluating the impact of adopting the reference rate reform guidance (both ASU 2020-04 and ASU 2021-01) on its condensed consolidated financial statements. As discussed in Note 6, the A&R Credit Agreement removed LIBOR as a benchmark rate and now utilizes SOFR (as defined in the A&R Credit Agreement) as its replacement.

In August 2020, the FASB issued ASU 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity, which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity and amends the scope guidance for contracts in an entity's own equity. The ASU addresses how convertible instruments are accounted for in the calculation of diluted earnings per share by using the if-converted method. The guidance is effective for all entities for fiscal years beginning after March 31, 2024, albeit early adoption is permitted no earlier than fiscal years beginning after December 15, 2020. Management is currently assessing the impact of this pronouncement on its condensed consolidated financial statements.

Revenue from Contract with Customers

Revenue from Contracts with Customers

The Company generates revenue principally from fixed-price construction contracts to deliver HVAC, plumbing, and electrical construction services to its customers. The duration of its contracts generally ranges from six months to two years. Revenue from fixed price contracts is recognized on the cost-to-cost method, measured by the relationship of total cost incurred to total estimated contract costs. Revenue from time and materials contracts is recognized as services are performed. The Company believes that its extensive experience in HVAC, plumbing, and electrical projects, and its internal cost review procedures during the bidding process, enable it to reasonably estimate costs and mitigate the risk of cost overruns on fixed price contracts.

The Company generally invoices customers on a monthly basis, based on a schedule of values that breaks down the contract amount into discrete billing items. Costs and estimated earnings in excess of billings on uncompleted contracts are recorded as a contract asset until billable under the contract terms. Billings in excess of costs and estimated earnings on uncompleted contracts are recorded as a contract liability until the related revenue is recognizable. The Company classifies contract assets and liabilities that may be settled beyond one year from the balance sheet date as current, consistent with the length of time of the Company’s project operating cycle.

Retainage receivable represents amounts invoiced to customers where payments have been partially withheld, typically 10%, pending the completion of certain milestones, satisfaction of other contractual conditions or the completion of the project. Retainage agreements vary from project to project and balances could be outstanding for several months or years depending on a number of circumstances such as contract-specific terms, project performance and other variables that may arise as the Company makes progress towards completion.

Contract assets represent the excess of contract costs and profits (or contract revenue) over the amount of contract billings to date and are classified as a current asset. Contract assets result when either: (1) the appropriate contract revenue amount has been recognized over time in accordance with ASC Topic 606, but a portion of the revenue recorded cannot be currently billed due to the billing terms defined in the contract, or (2) costs are incurred related to certain claims and unapproved change orders. Claims occur when there is a dispute regarding both a change in the scope of work and the price associated with that change. Unapproved change orders occur when a change in the scope of work results in additional work being performed before the parties have agreed on the corresponding change in the contract price. The Company routinely estimates recovery related to claims and unapproved change orders as a form of variable consideration at the most likely amount it expects to receive and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Claims and unapproved change orders are billable upon the agreement and resolution between the contractual parties and after the execution of contractual amendments. Increases in claims and unapproved change orders typically result from costs being incurred against existing or new positions; decreases normally result from resolutions and subsequent billings.

Billings in excess of costs represent the excess of contract billings to date over the amount of contract costs and profits (or contract revenue) recognized to date. The balance may fluctuate depending on the timing of contract billings and the recognition of contract revenue.

Provisions for losses are recognized in the condensed consolidated statements of operations at the uncompleted performance obligation level for the amount of total estimated losses in the period that evidence indicates that the estimated total cost of a performance obligation exceeds its estimated total revenue.

Remaining Performance Obligations

Remaining performance obligations represent the transaction price of firm orders for which work has not been performed and exclude unexercised contract options. The Company’s remaining performance obligations include projects that have a written award, a letter of intent, a notice to proceed or an agreed upon work order to perform work on mutually accepted terms and conditions.

Additionally, the difference between remaining performance obligations and backlog is due to the exclusion of a portion of the Company’s ODR agreements under certain contract types from the Company’s remaining performance obligations as these contracts can be canceled for convenience at any time by the Company or the customer without considerable cost incurred by the customer.

Fair Value Measurements

The Company measures the fair value of financial assets and liabilities in accordance with ASC Topic 820 – Fair Value Measurements and Disclosures, which defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value and requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to measurements involving significant unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

•Level 1 — inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that are accessible at the measurement date;

•Level 2 — inputs other than quoted prices included in Level 1 that are observable for the asset or liability either directly or indirectly such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities; and

•Level 3 — unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

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Acquisitions (Tables)

6 Months Ended

Jun. 30, 2022

Business Combination and Asset Acquisition [Abstract]

Schedule of Allocation of Fair Value of Assets and Liabilities from Jake Marshall Transaction

The following table summarizes the final allocation of the fair value of the assets and liabilities of the Jake Marshall Transaction as of the Effective Date by the Company.

(in thousands)	Purchase Price Allocation
Consideration:
Cash	$	21,313
Earnout provision	3,089
Total Consideration	24,402
Fair value of assets acquired:
Cash and cash equivalents	2,336
Accounts receivable	7,165
Contract assets	1,711
Other current assets	164
Property and equipment	5,762
Intangible assets	5,710
Amount attributable to assets acquired	22,848
Fair value of liabilities assumed:
Accounts payable, including retainage	2,655
Accrued expenses and other current liabilities	570
Contract liabilities	462
Amount attributable to liabilities assumed	3,687
Goodwill	$	5,241

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Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2022

Revenue from Contract with Customer [Abstract]

Schedule of Components of Contract Asset and Liability Balances

Contract assets include amounts due under retainage provisions and costs and estimated earnings in excess of billings. The components of the contract asset balances as of the respective dates were as follows:

(in thousands)	June 30, 2022		December 31, 2021		Change
Contract assets
Costs in excess of billings and estimated earnings	$	44,366	$	47,447	$	(3,081)
Retainage receivable	30,593		36,416		(5,823)
Total contract assets	$	74,959	$	83,863	$	(8,904)

Contract liabilities include billings in excess of contract costs and provisions for losses. The components of the contract liability balances as of the respective dates were as follows:

(in thousands)	June 30, 2022		December 31, 2021		Change
Contract liabilities
Billings in excess of costs and estimated earnings	$	39,401	$	26,293	$	13,108
Provisions for losses	434		419		15
Total contract liabilities	$	39,835	$	26,712	$	13,123

Schedule of Contracts In Progress

The net underbilling position for contracts in process consisted of the following:

(in thousands)	June 30, 2022		December 31, 2021
Revenue earned on uncompleted contracts	$	744,522	$	758,450
Less: Billings to date	(739,557)		(737,296)
Net underbilling	$	4,965	$	21,154
(in thousands)	June 30, 2022		December 31, 2021
Costs in excess of billings and estimated earnings	$	44,366	$	47,447
Billings in excess of costs and estimated earnings	(39,401)		(26,293)
Net underbilling	$	4,965	$	21,154

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Goodwill and Intangibles (Tables)

6 Months Ended

Jun. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

Intangible assets are comprised of the following:     

(in thousands)	Gross carrying amount		Accumulated amortization		Net intangible assets, excluding goodwill
June 30, 2022
Amortized intangible assets:
Customer relationships – GCR – Jake Marshall	$	570	$	(47)	$	523
Customer relationships – ODR – Jake Marshall	3,050		(235)		2,815
Customer relationships – ODR – Limbach	4,710		(3,634)		1,076
Favorable leasehold interests – Limbach	190		(90)		100
Backlog – GCR – Jake Marshall	260		(96)		164
Backlog – ODR – Jake Marshall	680		(250)		430
Trade name – Jake Marshall	1,150		(109)		1,041
Total amortized intangible assets	10,610		(4,461)		6,149
Unamortized intangible assets:
Trade name – Limbach(1)	9,960		—		9,960
Total unamortized intangible assets	9,960		—		9,960
Total amortized and unamortized assets, excluding goodwill	$	20,570	$	(4,461)	$	16,109

(1)    The Company has determined that its trade name has an indefinite useful life. The Limbach trade name has been in existence since the Company’s founding in 1901 and therefore is an established brand within the industry.

(in thousands)	Gross carrying amount		Accumulated amortization		Net intangible assets, excluding goodwill
December 31, 2021
Amortized intangible assets:
Customer relationships – GCR – Jake Marshall	$	570	$	(6)	$	564
Customer relationships – ODR – Jake Marshall	3,050		(35)		3,015
Customer relationships – ODR – Limbach	4,710		(3,475)		1,235
Favorable leasehold interests – Limbach	190		(82)		108
Backlog – GCR – Jake Marshall	260		(14)		246
Backlog – ODR – Jake Marshall	680		(36)		644
Trade name – Jake Marshall	1,150		(15)		1,135
Total amortized intangible assets	10,610		(3,663)		6,947
Unamortized intangible assets:
Trade name – Limbach	9,960		—		9,960
Total unamortized intangible assets	9,960		—		9,960
Total amortized and unamortized assets, excluding goodwill	$	20,570	$	(3,663)	$	16,907

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Debt (Tables)

6 Months Ended

Jun. 30, 2022

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

Long-term debt consists of the following obligations as of:

(in thousands)	June 30, 2022		December 31, 2021
A&R Wintrust Term Loan - term loan payable in quarterly installments of principal, (commencing in December 2021) plus interest through February 2026	25,733		34,881
A&R Wintrust Revolving Loan	3,500		—
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 3.96% to 6.45% through 2026	5,665		5,132
Total debt	34,898		40,013
Less - Current portion of long-term debt	(9,893)		(9,879)
Less - Unamortized discount and debt issuance costs	(306)		(318)
Long-term debt	$	24,699	$	29,816

Schedule of Additional Margin and Commitment Fees Payable

The following is a summary of the applicable margin and commitment fees payable on the available A&R Wintrust Term Loan and A&R Wintrust Revolving Loan credit commitment:

Level	Senior Leverage Ratio	Additional Margin for Prime Rate loans		Additional Margin for Prime Revolving loans		Additional Margin for Eurodollar Term loans
I	Greater than 1.00 to 1.00	1.00	%	0.50	%	0.25	%
II	Less than or equal to 1.00 to 1.00	0.25	%	—	%	0.25	%

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Equity (Tables)

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Schedule of Outstanding Warrants

The following table summarizes the underlying shares of common stock with respect to outstanding warrants:

	June 30, 2022	December 31, 2021
$15 Exercise Price Sponsor Warrants(1)(2)	600,000	600,000
Merger Warrants(3)(4)	629,643	629,643
Total	1,229,643	1,229,643

(1)    Exercisable for one share of common stock at an exercise price of $15.00 per share (“$15 Exercise Price Sponsor Warrants”).

(2)    Issued under a warrant agreement dated July 15, 2014, between Continental Stock Transfer and Trust Company, as warrant agent, and the Company.

(3)    Exercisable for one share of common stock at an exercise price of $12.50 per share (“Merger Warrants”).

(4)    Issued to the sellers of LHLLC.

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Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2022

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation of the basic and diluted earnings per share attributable to the Company's common shareholders for the three and six months ended June 30, 2022 and 2021:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands, except per share amounts)	2022		2021		2022		2021
EPS numerator:
Net income (loss)	$	866	$	732	$	(650)	$	(1,550)
EPS denominator:
Weighted average shares outstanding – basic	10,423		10,252		10,422		9,738
Impact of dilutive securities(1)	144		217		—		—
Weighted average shares outstanding – diluted	10,567		10,469		10,422		9,738
EPS:
Basic	$	0.08	$	0.07	$	(0.06)	$	(0.16)
Diluted	$	0.08	$	0.07	$	(0.06)	$	(0.16)

(1)    For the six months ended June 30, 2022 and 2021, the Company excluded 150,420 and 225,974, respectively, of potentially dilutive securities related to certain of the Company's outstanding common stock warrants, shares issued in conjunction with the Company's ESPP and nonvested RSUs. These securities were excluded from the computation as their effect would have been anti-dilutive. As a result, the computations of net loss per share for the six months ended June 30, 2022 and 2021 is the same for both basic and diluted.

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table summarizes the securities that were antidilutive or out-of-the-money, and therefore, were not included in the computations of diluted income per common share:

	Three Months Ended June 30,		Six Months Ended June 30,
	2022	2021	2022	2021
In-the-money warrants	—	—	—	—
Out-of-the-money warrants (see Note 7)	1,229,643	4,403,930	1,229,643	4,403,930
Service-based RSUs (See Note 14)	17,595	334	72,871	142,120
Performance and market-based RSUs(1)	48,229	13,929	85,969	79,971
Employee Stock Purchase Plan	—	—	8,451	4,778
Total	1,295,467	4,418,193	1,396,934	4,630,799

(1)    For the three and six months ended June 30, 2022 and 2021, certain MRSU awards (each defined in Note 14) were not included in the computation of diluted income per common share because the performance and market conditions were not satisfied during the periods and would not be satisfied if the reporting date was at the end of the contingency period.

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Income Taxes (Tables)

6 Months Ended

Jun. 30, 2022

Income Tax Disclosure [Abstract]

Schedule of Income Tax Provision (Benefit)

The following table presents our income tax provision (benefit) and our income tax rate for the three and six months ended June 30, 2022 and 2021.

	Three Months Ended June 30,						Six Months Ended June 30,
(in thousands, except percentages)	2022			2021			2022			2021
Income tax provision (benefit)	$	237		$	264		$	(379)		$	(771)
Income tax rate	21.5		%	26.5		%	36.8		%	33.2		%

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Operating Segments (Tables)

6 Months Ended

Jun. 30, 2022

Segment Reporting [Abstract]

Schedule of Condensed Consolidated Segment Information

Condensed consolidated segment information for the three and six months ended June 30, 2022 and 2021 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	2022		2021		2022		2021
Statement of Operations Data:
Revenue:
GCR	$	66,336	$	87,550	$	138,268	$	172,354
ODR	49,784		33,469		92,674		62,009
Total revenue	116,120		121,019		230,942		234,363
Gross profit:
GCR	8,694		8,885		17,052		18,280
ODR	12,626		9,805		22,608		17,639
Total gross profit	21,320		18,690		39,660		35,919
Selling, general and administrative:
GCR	7,980		9,070		16,545		18,184
ODR	10,135		7,526		19,705		14,880
Corporate	575		636		1,174		1,313
Total selling, general and administrative	18,690		17,232		37,424		34,377
Change in fair value of contingent consideration	765		—		765		—
Amortization of intangibles	399		104		798		208
Operating income	$	1,466	$	1,354	$	673	$	1,334
Less unallocated amounts:
Interest expense, net	(478)		(452)		(964)		(1,716)
Gain on disposition of property and equipment	147		94		111		8
Loss on early termination of operating lease	(32)		—		(849)		—
Loss on early debt extinguishment	—		—		—		(1,961)
Gain on change in fair value of warrant liability	—		—		—		14
Total unallocated amounts	(363)		(358)		(1,702)		(3,655)
Income (loss) before income taxes	$	1,103	$	996	$	(1,029)	$	(2,321)
Other Data:
Depreciation and amortization:
GCR	$	1,075	$	1,020	$	2,183	$	2,056
ODR	612		345		1,167		700
Corporate	399		104		798		208
Total other data	$	2,086	$	1,469	$	4,148	$	2,964

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Leases (Tables)

6 Months Ended

Jun. 30, 2022

Leases [Abstract]

Supplemental Balance Sheets Information

The following table summarizes the lease amounts included in the Company's condensed consolidated balance sheets:

(in thousands)	Classification on the Condensed Consolidated Balance Sheets	June 30, 2022		December 31, 2021
Assets
Operating	Operating lease right-of-use assets(1)	$	16,644	$	20,119
Finance	Property and equipment, net(2)	5,474		4,916
Total lease assets		$	22,118	$	25,035
Liabilities
Current
Operating	Current operating lease liabilities	$	3,415	$	4,366
Finance	Current portion of long-term debt	2,465		2,451
Noncurrent
Operating	Long-term operating lease liabilities	14,086		16,576
Finance	Long-term debt	3,200		2,681
Total lease liabilities		$	23,166	$	26,074

(1)     Operating lease assets are recorded net of accumulated amortization of $15.0 million at June 30, 2022 and $15.9 million at December 31, 2021.

(2)    Finance lease assets are recorded net of accumulated amortization of $6.0 million at June 30, 2022 and $5.9 million at December 31, 2021.

Summary of Lease Costs, Lease Terms and Discount Rates

The following table summarizes the lease costs included in the Company's condensed consolidated statements of operations for the three and six months ended June 30, 2022 and 2021:

		Three Months Ended June 30,				Six Months Ended June 30,
(in thousands)	Classification on the Condensed Consolidated Statement of Operations	2022		2021		2022		2021
Operating lease cost	Cost of revenue(1)	$	657	$	685	$	1,351	$	1,375
Operating lease cost	Selling, general and administrative(1)	631		584		1,335		1,169
Finance lease cost
Amortization	Cost of revenue(2)	685		652		1,336		1,327
Interest	Interest expense, net(2)	66		78		132		164
Total lease cost		$	2,039	$	1,999	$	4,154	$	4,035

(1)    Operating lease costs recorded in cost of revenue included $0.1 million of variable lease costs for each of the three months ended June 30, 2022 and 2021, and $0.2 million for each of the six months ended June 30, 2022 and 2021. In addition, $0.1 million of variable lease costs are included in selling, general and administrative for each of the three months ended June 30, 2022 and 2021, and $0.2 million for each of the six months ended June 30, 2022 and 2021. These variable costs consist of the Company's proportionate share of operating expenses, real estate taxes and utilities.

(2)     Finance lease costs recorded in cost of revenue include variable lease costs of $1.0 million and $0.7 million for the three months ended June 30, 2022 and 2021, respectively, and $1.8 million and $1.3 million for the six months ended June 30, 2022 and 2021, respectively. These variable lease costs consist of fuel, maintenance, and sales tax charges.

The following is a summary of the lease terms and discount rates:

	June 30, 2022		December 31, 2021
Weighted average lease term (in years):
Operating	7.29		7.10
Finance	2.78		2.51
Weighted average discount rate:
Operating	4.67	%	4.68	%
Finance	4.99	%	5.27	%

Future Minimum Commitment for Finance Leases

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2022 were as follows:

			Operating Leases
Year ending (in thousands):	Finance Leases		Non-Related Party		Related Party(1)		Sublease Receipts(2)		Total Operating
Remainder of 2022	$	1,353	$	2,104	$	225	$	(435)	$	1,894
2023	1,990		3,108		450		(885)		2,673
2024	1,274		2,502		450		(912)		2,040
2025	777		2,148		450		(939)		1,659
2026	271		2,010		450		(967)		1,493
Thereafter	—		2,033		4,815		(327)		6,521
Total minimum lease payments	$	5,665	$	13,905	$	6,840	$	(4,465)	$	16,280
Amounts representing interest	397
Present value of net minimum lease payments	$	6,062

(1)    Associated with the aforementioned related party lease entered into with a former member of JMLLC.

(2)    Associated with the aforementioned third party sublease.

Future Minimum Commitment for Operating Leases

Future minimum commitments for finance and operating leases that have non-cancelable lease terms in excess of one year as of June 30, 2022 were as follows:

			Operating Leases
Year ending (in thousands):	Finance Leases		Non-Related Party		Related Party(1)		Sublease Receipts(2)		Total Operating
Remainder of 2022	$	1,353	$	2,104	$	225	$	(435)	$	1,894
2023	1,990		3,108		450		(885)		2,673
2024	1,274		2,502		450		(912)		2,040
2025	777		2,148		450		(939)		1,659
2026	271		2,010		450		(967)		1,493
Thereafter	—		2,033		4,815		(327)		6,521
Total minimum lease payments	$	5,665	$	13,905	$	6,840	$	(4,465)	$	16,280
Amounts representing interest	397
Present value of net minimum lease payments	$	6,062

(1)    Associated with the aforementioned related party lease entered into with a former member of JMLLC.

(2)    Associated with the aforementioned third party sublease.

Leases Supplemental Cash Flow Information

The following is a summary of other information and supplemental cash flow information related to finance and operating leases:

	Six months ended June 30,
(in thousands)	2022		2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,619	$	2,456
Operating cash flows from finance leases	132		164
Financing cash flows from finance leases	1,358		1,318
Right-of-use assets exchanged for lease liabilities:
Operating leases	—		156
Finance leases	1,968		336
Right-of-use assets disposed or adjusted modifying operating leases liabilities	(1,276)		36
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$	(77)	—

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2022

Commitments and Contingencies Disclosure [Abstract]

Schedule of Components of Self-Insurance

The components of the self-insurance liability as of June 30, 2022 and December 31, 2021 are as follows:

(in thousands)	June 30, 2022		December 31, 2021
Current liability — workers’ compensation and general liability	$	282	$	184
Current liability — medical and dental	415		456
Non-current liability	420		451
Total liability	$	1,117	$	1,091
Restricted cash	$	113	$	113

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Management Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2022

RSUs

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes the Company's service-based RSU activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	266,089	$	8.45
Granted	183,187	8.98
Vested	(120,401)	7.43
Forfeited	(24,604)	9.43
Unvested at June 30, 2022	304,271	$	9.10

PRSUs

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes the Company's PRSU activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	280,700	$	9.46
Granted	254,854	7.17
Vested	—	—
Forfeited	(41,123)	8.98
Unvested at June 30, 2022	494,431	$	8.32

MRSUs

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes the Company's market-based RSU (“MRSUs”) activity for the six months ended June 30, 2022:

	Awards	Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021	102,500	$	8.26
Granted	—	—
Vested	—	—
Forfeited	(8,000)	8.26
Unvested at June 30, 2022	94,500	$	8.26

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Business and Organization (Details)	6 Months Ended
	Jun. 30, 2022 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments	2
Service period	2 years

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Acquisitions - Narrative (Details) - Jake Marshall Transaction $ in Thousands	Dec. 02, 2021 USD ($) payment	Jun. 30, 2022 USD ($)
Business Acquisition [Line Items]
Closing purchase price	$ 21,313
Amount of consideration paid held in escrow for indemnification purposes	1,000
Earnout payments	6,000
Maximum
Business Acquisition [Line Items]
Earnout payments		$ 3,900
Earn Out Payment Two
Business Acquisition [Line Items]
Earnout payments	$ 3,000
Number of earnout tranches | payment	2
Earnout period	13 months
Earn Out Payment Two | Maximum
Business Acquisition [Line Items]
Gross profits from acquired companies	$ 10,000
Earn Out Payment Two | Minimum
Business Acquisition [Line Items]
Gross profits from acquired companies	8,000
Earn Out Payment One
Business Acquisition [Line Items]
Earnout payments	$ 3,000
Number of earnout tranches | payment	2
Earnout period	13 months
Earn Out Payment One | Maximum
Business Acquisition [Line Items]
Gross profits from acquired companies	$ 10,000
Earn Out Payment One | Minimum
Business Acquisition [Line Items]
Gross profits from acquired companies	8,000
ODR
Business Acquisition [Line Items]
Goodwill associated with acquisition	5,200
Goodwill fully deductible for tax purposes	$ 5,200

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Acquisitions - Allocation of Purchase Price of Assets and Liabilities from Jake Marshall Transaction (Details) - USD ($) $ in Thousands	Dec. 02, 2021	Jun. 30, 2022	Dec. 31, 2021
Fair value of liabilities assumed:
Goodwill		$ 11,370	$ 11,370
Jake Marshall Transaction
Consideration:
Cash	$ 21,313
Earnout provision	3,089
Total Consideration	24,402
Fair value of assets acquired:
Cash and cash equivalents	2,336
Accounts receivable	7,165
Contract assets	1,711
Other current assets	164
Property and equipment	5,762
Intangible assets	5,710
Amount attributable to assets acquired	22,848
Fair value of liabilities assumed:
Accounts payable, including retainage	2,655
Accrued expenses and other current liabilities	570
Contract liabilities	462
Amount attributable to liabilities assumed	3,687
Goodwill	$ 5,241

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Revenue from Contracts with Customers - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) project	Jun. 30, 2021 USD ($) project	Jun. 30, 2022 USD ($) project	Jun. 30, 2021 USD ($) project	Dec. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Term of revenue contracts			six months to two years
Percentage completed of certain milestones			10.00%
Net amount of unresolved change orders and claims	$ 38,600		$ 38,600		$ 38,100
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligations, expected timing of satisfaction, period	24 months		24 months
GCR
Disaggregation of Revenue [Line Items]
Number of projects | project	1	1	1	2
Revision amount for gross profit impact on contract estimates (more than)	$ 500	$ (500)	$ 500
Total net gross profits write ups (downs)	1,300	$ (1,000)	1,300	$ (1,500)
GCR | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Disaggregation of Revenue [Line Items]
Remaining performance obligations, amount	$ 308,800		$ 308,800
Revenue, remaining performance obligations, percentage	50.00%		50.00%
Revenue, remaining performance obligations, expected timing of satisfaction, period	6 months		6 months
GCR | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligations, percentage	40.00%		40.00%
Revenue, remaining performance obligations, expected timing of satisfaction, period	1 year 6 months		1 year 6 months
ODR | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Disaggregation of Revenue [Line Items]
Remaining performance obligations, amount	$ 102,100		$ 102,100
Revenue, remaining performance obligations, percentage	66.00%		66.00%
Revenue, remaining performance obligations, expected timing of satisfaction, period	6 months		6 months
ODR | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligations, percentage	27.00%		27.00%
Revenue, remaining performance obligations, expected timing of satisfaction, period	1 year 6 months		1 year 6 months

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Revenue from Contracts with Customers - Components of Contract Asset and Liability Balances (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Contract assets
Costs in excess of billings and estimated earnings	$ 44,366		$ 47,447
Retainage receivable	30,593		36,416
Total contract assets	74,959		83,863
Change in costs in excess of billings and estimated earnings	(3,081)
Change in retainage receivable	(5,823)
Change in total contract assets	(8,904)	$ 3,717
Contract liabilities
Billings in excess of costs and estimated earnings	39,401		26,293
Provisions for losses	434		419
Total contract liabilities	39,835		$ 26,712
Change in billings in excess of costs and estimated earnings	13,108
Change in provisions for losses	15
Change in total contract liabilities	$ 13,123	$ (7,469)

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Revenue from Contracts with Customers - Contracts In Progress (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue earned on uncompleted contracts	$ 744,522	$ 758,450
Less: Billings to date	(739,557)	(737,296)
Net underbilling	4,965	21,154
Costs in excess of billings and estimated earnings	44,366	47,447
Billings in excess of costs and estimated earnings	$ (39,401)	$ (26,293)

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Goodwill and Intangibles - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 11,370,000		$ 11,370,000		$ 11,370,000
Impairment of intangible assets (excluding goodwill)			0	$ 0
Amortization of intangibles	$ 399,000	$ 104,000	$ 798,000	$ 208,000

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Goodwill and Intangibles - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Amortized intangible assets:
Gross carrying amount	$ 10,610	$ 10,610
Accumulated amortization	(4,461)	(3,663)
Net intangible assets, excluding goodwill	6,149	6,947
Unamortized intangible assets:
Gross carrying amount	9,960	9,960
Net intangible assets, excluding goodwill	9,960	9,960
Gross carrying amount	20,570	20,570
Accumulated amortization	(4,461)	(3,663)
Total amortized and unamortized assets, excluding goodwill	16,109	16,907
Trade name – Jake Marshall
Unamortized intangible assets:
Gross carrying amount	9,960	9,960
Net intangible assets, excluding goodwill	9,960	9,960
Customer Relationships | GCR | Jake Marshall Transaction
Amortized intangible assets:
Gross carrying amount	570	570
Accumulated amortization	(47)	(6)
Net intangible assets, excluding goodwill	523	564
Unamortized intangible assets:
Accumulated amortization	(47)	(6)
Customer Relationships | ODR
Amortized intangible assets:
Gross carrying amount	4,710	4,710
Accumulated amortization	(3,634)	(3,475)
Net intangible assets, excluding goodwill	1,076	1,235
Unamortized intangible assets:
Accumulated amortization	(3,634)	(3,475)
Customer Relationships | ODR | Jake Marshall Transaction
Amortized intangible assets:
Gross carrying amount	3,050	3,050
Accumulated amortization	(235)	(35)
Net intangible assets, excluding goodwill	2,815	3,015
Unamortized intangible assets:
Accumulated amortization	(235)	(35)
Favorable Leasehold Interests
Amortized intangible assets:
Gross carrying amount	190	190
Accumulated amortization	(90)	(82)
Net intangible assets, excluding goodwill	100	108
Unamortized intangible assets:
Accumulated amortization	(90)	(82)
Backlog – Construction | GCR | Jake Marshall Transaction
Amortized intangible assets:
Gross carrying amount	260	260
Accumulated amortization	(96)	(14)
Net intangible assets, excluding goodwill	164	246
Unamortized intangible assets:
Accumulated amortization	(96)	(14)
Backlog – Construction | ODR | Jake Marshall Transaction
Amortized intangible assets:
Gross carrying amount	680	680
Accumulated amortization	(250)	(36)
Net intangible assets, excluding goodwill	430	644
Unamortized intangible assets:
Accumulated amortization	(250)	(36)
Trade name – Jake Marshall | Jake Marshall Transaction
Amortized intangible assets:
Gross carrying amount	1,150	1,150
Accumulated amortization	(109)	(15)
Net intangible assets, excluding goodwill	1,041	1,135
Unamortized intangible assets:
Accumulated amortization	$ (109)	$ (15)

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Debt - Long-Term Debt (Details) - USD ($)		3 Months Ended		6 Months Ended
	Feb. 24, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 3.96% to 6.45% through 2026		$ 5,665,000		$ 5,665,000		$ 5,132,000
Total debt		34,898,000		34,898,000		40,013,000
Less - Current portion of long-term debt		(9,893,000)		(9,893,000)		(9,879,000)
Less - Unamortized discount and debt issuance costs		(306,000)		(306,000)		(318,000)
Long-term debt		24,699,000		24,699,000		29,816,000
Loss on early debt extinguishment		$ 0	$ 0	0	$ 1,961,000
Prepayment penalty and other costs associated with early debt extinguishment				$ 0	$ 1,376,000
Minimum
Debt Instrument [Line Items]
Finance lease, discount rate		3.96%		3.96%
Maximum
Debt Instrument [Line Items]
Finance lease, discount rate		6.45%		6.45%
2019 Refinancing Agreement
Debt Instrument [Line Items]
Long term debt	$ 0
Loss on early debt extinguishment	2,000,000
Write off of debt issuance and discount costs	2,600,000
Reversal or warrant liability	2,000,000
Prepayment penalty and other costs associated with early debt extinguishment	$ 1,400,000
Secured Debt | A&R Wintrust Term Loan - term loan payable in quarterly installments of principal, (commencing in December 2021) plus interest through February 2026
Debt Instrument [Line Items]
Long term debt		$ 25,733,000		$ 25,733,000		34,881,000
Revolving Credit Facility | A&R Wintrust Revolving Loan
Debt Instrument [Line Items]
Long term debt		$ 3,500,000		$ 3,500,000		$ 0

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Debt - 2019 Refinancing Agreement - 2019 Term Loans (Details) - 2019 Refinancing Agreement - USD ($) $ in Millions		3 Months Ended
	Apr. 12, 2019	Sep. 30, 2020	Feb. 24, 2021
Debt Instrument [Line Items]
Debt issued	$ 40.0
Debt installment payments		$ 1.0
Unused line fee percentage		2.00%
Make-whole premium prepayment period		19 months
Make-whole provision applicable to interest period		18 months
Debt effective interest rate			13.00%
LIBOR Rate
Debt Instrument [Line Items]
Basis spread on variable rate	11.00%
LIBOR Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	10.00%
Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 25.0

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Debt - 2019 Refinancing Agreement - CB Warrants (Details) - USD ($)		2 Months Ended	6 Months Ended
	Apr. 12, 2019	Feb. 24, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Percentage of number of shares	2.00%
Amortization of debt issuance costs			$ 65,000	$ 220,000
2019 Refinancing Term Loan - CB Warrants
Debt Instrument [Line Items]
Class of warrant or right, number of securities called by each warrant or right (in shares)	263,314
Exercise price of warrants (in usd per share)	$ 7.63
Warrants term	5 years
Interest expense, debt		$ 100,000
Amortization of debt issuance costs		$ 100,000
2019 Refinancing Agreement
Debt Instrument [Line Items]
Class of warrant or right, number of securities called by each warrant or right (in shares)		0
Debt outstanding		$ 0

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Debt - 2019 ABL Credit Agreement (Details) - 2019 Refinancing Revolving Credit Facility - USD ($) $ in Millions	Apr. 12, 2019	Feb. 24, 2021
Debt Instrument [Line Items]
Debt effective interest rate		5.25%
Letters of credit		$ 3.4
LIBOR Rate
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
LIBOR Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
LIBOR Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	3.50%
Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 15.0

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Debt - Wintrust Term and Revolving Loans (Details)			3 Months Ended		6 Months Ended
	Dec. 02, 2021 USD ($) covenant	Feb. 24, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Wintrust Loans
Debt Instrument [Line Items]
Letters of credit			$ 3,300,000		$ 3,300,000
Wintrust Term Loan
Debt Instrument [Line Items]
Debt effective interest rate			5.75%	4.25%	5.75%	4.25%
Debt weighted average annual interest rate			4.90%	4.57%	4.90%	4.57%
A&R Wintrust Term And Revolving Loans
Debt Instrument [Line Items]
Number of financial covenants | covenant	3
Debt instrument, covenant compliance, leverage ratio	200.00%
Debt instrument, covenant compliance, coverage ratio	1.20
Aggregate amount of unfinanced capital expenditures during any fiscal year	$ 0
Limit annual percentage of unfinanced capital expenditures	50.00%
Maximum outstanding borrowings during the period			$ 3,500,000		$ 9,400,000
Weighted average annual interest rate			4.91%		4.37%
Commitment fees			$ 13,000	$ 14,000	$ 27,000	$ 20,000
A&R Wintrust Term And Revolving Loans | Maximum
Debt Instrument [Line Items]
Aggregate amount of unfinanced capital expenditures during any fiscal year	$ 4,000,000
Amount drawn under credit agreement			3,500,000		3,500,000		$ 0
Average daily balance of borrowings outstanding			100,000		$ 100,000
Secured Debt | Wintrust Term Loan
Debt Instrument [Line Items]
Debt issued		$ 30,000,000
Debt installment payments		$ 500,000
Secured Debt | A&R Wintrust Term Loan
Debt Instrument [Line Items]
Debt installment payments	600,000
Excess cash flow payments			3,300,000
Net claim proceeds payments			$ 2,100,000
Secured Debt | A&R Wintrust Term Loan | Jake Marshall Transaction
Debt Instrument [Line Items]
Debt issued	35,500,000
Secured Debt | Revolving Credit Facility | A&R Wintrust Revolving Loan | Jake Marshall Transaction
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	25,000,000
Secured Debt | Sublimit for Letters of Credit | A&R Wintrust Revolving Loan | Jake Marshall Transaction
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 5,000,000
Line of Credit | A&R Wintrust Term Loan | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Step-down adjustment on basis spread on variable rate	7500.00%
Line of Credit | A&R Wintrust Term Loan | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Line of Credit | A&R Wintrust Term Loan | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Step-down adjustment on basis spread on variable rate	5000.00%
Line of Credit | A&R Wintrust Term Loan | Secured Overnight Financing Rate (SOFR) | Variable Rate Component Two
Debt Instrument [Line Items]
Basis spread on variable rate	4.26%
Line of Credit | A&R Wintrust Term Loan | Secured Overnight Financing Rate (SOFR) | Variable Rate Component Three
Debt Instrument [Line Items]
Basis spread on variable rate	4.42%
Line of Credit | A&R Wintrust Term Loan | Secured Overnight Financing Rate (SOFR) | Variable Rate Component One
Debt Instrument [Line Items]
Basis spread on variable rate	4.10%
Line of Credit | A&R Wintrust Term Loan | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.15%
Line of Credit | Revolving Credit Facility | Wintrust Term Loan | LIBOR Rate
Debt Instrument [Line Items]
Step-down adjustment on basis spread on variable rate		0.50%
Line of Credit | Revolving Credit Facility | Wintrust Term Loan | LIBOR Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		0.25%
Line of Credit | Revolving Credit Facility | Wintrust Term Loan | LIBOR Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		4.00%
Line of Credit | Revolving Credit Facility | Wintrust Term Loan | Base Rate
Debt Instrument [Line Items]
Step-down adjustment on basis spread on variable rate		0.75%
Line of Credit | Revolving Credit Facility | Wintrust Term Loan | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		3.00%
Line of Credit | Revolving Credit Facility | Wintrust Term Loan | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 25,000,000
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | LIBOR Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		0.25%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | LIBOR Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		3.50%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Base Rate
Debt Instrument [Line Items]
Step-down adjustment on basis spread on variable rate		0.50%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		3.00%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Base Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Step-down adjustment on basis spread on variable rate	5000.00%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Base Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Secured Overnight Financing Rate (SOFR) | Variable Rate Component Two
Debt Instrument [Line Items]
Basis spread on variable rate	3.76%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Secured Overnight Financing Rate (SOFR) | Variable Rate Component Three
Debt Instrument [Line Items]
Basis spread on variable rate	3.92%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Secured Overnight Financing Rate (SOFR) | Variable Rate Component One
Debt Instrument [Line Items]
Basis spread on variable rate	3.60%
Line of Credit | Revolving Credit Facility | A&R Wintrust Revolving Loan | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.15%
Line of Credit | Sublimit for Letters of Credit | A&R Wintrust Revolving Loan
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 5,000,000

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Debt - Additional Margin and Commitment Fees Payable (Details)	6 Months Ended
	Jun. 30, 2022
Level I
Debt Instrument [Line Items]
Senior Leverage Ratio	100.00%
Level I | Prime Rate | Wintrust Term Loan
Debt Instrument [Line Items]
Additional Margin for Loans	1.00%
Level I | Prime Rate | A&R Wintrust Revolving Loan
Debt Instrument [Line Items]
Additional Margin for Loans	0.50%
Level I | Eurodollar | Wintrust Term Loan
Debt Instrument [Line Items]
Additional Margin for Loans	0.25%
Level II
Debt Instrument [Line Items]
Senior Leverage Ratio	100.00%
Level II | Prime Rate | Wintrust Term Loan
Debt Instrument [Line Items]
Additional Margin for Loans	0.25%
Level II | Prime Rate | A&R Wintrust Revolving Loan
Debt Instrument [Line Items]
Additional Margin for Loans	0.00%
Level II | Eurodollar | Wintrust Term Loan
Debt Instrument [Line Items]
Additional Margin for Loans	0.25%

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Equity - Narrative (Details) - USD ($)						1 Months Ended
	Mar. 25, 2022	Mar. 09, 2021	Feb. 18, 2021	Feb. 12, 2021	Jan. 01, 2020	Jan. 31, 2022	Jan. 31, 2021	Jun. 30, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Common stock, shares authorized (in shares)								100,000,000	100,000,000
Common stock, par or stated value per share (in usd per share)								$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)								1,000,000
Preferred stock, par or stated value per share (in usd per shares)								$ 0.0001
2021 Public Offering
Class of Stock [Line Items]
Number of shares sold (in shares)				1,783,500
Share price (in usd per share)				$ 12.00
Proceeds from sale of shares, net of underwriters discounts and commissions				$ 19,800,000
Over-allotment Option
Class of Stock [Line Items]
Number of shares sold (in shares)			267,525	267,525
Share price (in usd per share)				$ 11.28
Period to purchase additional shares				30 days
Proceeds from sale of shares, net of underwriters discounts and commissions			$ 3,000,000
2021 Amended And Restated Omnibus Incentive Plan
Class of Stock [Line Items]
Number of additional shares authorized under share-based compensation plan (in shares)		600,000
Common stock, capital shares reserved for future issuance (in shares)		2,250,000						2,600,000
2022 Amended And Restated Omnibus Incentive Plan
Class of Stock [Line Items]
Number of additional shares authorized under share-based compensation plan (in shares)	350,000
Common stock, capital shares reserved for future issuance (in shares)	2,600,000
ESPP | Employee Stock
Class of Stock [Line Items]
Purchase price of common stock, percent of market price (no less than)					85.00%
Maximum employee subscription percentage					10.00%
Maximum contribution amount					$ 5,000
Offering period					6 months
Discount percentage from market price, beginning of purchase period					15.00%
Award vesting period					6 months
Number of shares authorized (in shares)					500,000
Shares issued (in shares)						12,898	8,928
Shares remaining available for future issuance (in shares)								431,209
$15 Exercise Price Sponsor Warrants
Class of Stock [Line Items]
Exercise price of warrants (in usd per share)								$ 15.00	$ 15

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Equity - Outstanding Warrants (Details) - $ / shares	Jun. 30, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Class of warrant or right, outstanding (in shares)	1,229,643	1,229,643
$15 Exercise Price Sponsor Warrants
Class of Stock [Line Items]
Class of warrant or right, outstanding (in shares)	600,000	600,000
Class of warrant or right, number of securities called by each warrant or right (in shares)	1	1
Exercise price of warrants (in usd per share)	$ 15.00	$ 15
Merger Warrants
Class of Stock [Line Items]
Class of warrant or right, outstanding (in shares)	629,643	629,643
Class of warrant or right, number of securities called by each warrant or right (in shares)	1	1
Exercise price of warrants (in usd per share)	$ 12.50	$ 12.50

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Fair Value Measurements (Details)	2 Months Ended	3 Months Ended		6 Months Ended
	Feb. 24, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021	Dec. 02, 2021 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of contingent consideration		$ 765,000	$ 0	$ 765,000	$ 0
Gain on change in fair value of warrant liability		0	$ 0	0	$ (14,000)
Jake Marshall Transaction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in fair value of contingent consideration		800,000
Earnout payments							$ 6,000,000
Jake Marshall Transaction | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout payments		3,900,000		3,900,000
Jake Marshall Transaction | Accrued Expenses and Other Current Liabilities | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout payments		2,500,000		2,500,000
Jake Marshall Transaction | Other Long-term Liabilities | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout payments		1,400,000		1,400,000
Level 3 | Contingent Consideration Liability | Jake Marshall Transaction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of earnout payments		$ 3,100,000		$ 3,100,000
Level 3 | Contingent Consideration Liability | Jake Marshall Transaction | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout payments, measurement input		0.0880		0.0880		0.0683
Wintrust Term Loan | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt		$ 25,700,000		$ 25,700,000
A&R Wintrust Revolving Loan | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt		3,500,000		3,500,000
2019 Refinancing Agreement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrants liability	$ 2,000,000	$ 0		$ 0
Gain on change in fair value of warrant liability	$ 14,000

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Earnings per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
EPS numerator:
Net income (loss)	$ 866	$ (1,516)	$ 732	$ (2,282)	$ (650)	$ (1,550)
EPS denominator:
Weighted average shares outstanding - basic (in shares)	10,423,068		10,251,696		10,421,886	9,737,801
Impact of dilutive securities (in shares)	144,000		217,000		0	0
Weighted average shares outstanding - diluted (in shares)	10,567,304		10,469,028		10,421,886	9,737,801
EPS:
Basic (in usd per share)	$ 0.08		$ 0.07		$ (0.06)	$ (0.16)
Diluted (in usd per share)	$ 0.08		$ 0.07		$ (0.06)	$ (0.16)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	1,295,467		4,418,193		1,396,934	4,630,799
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)					150,420	225,974

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Earnings per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	1,295,467	4,418,193	1,396,934	4,630,799
In-the-money warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	0	0	0	0
Out-of-the money warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	1,229,643	4,403,930	1,229,643	4,403,930
Service-based RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	17,595	334	72,871	142,120
Performance and market-based RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	48,229	13,929	85,969	79,971
Employee Stock Purchase Plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	0	0	8,451	4,778

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Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ 237,000	$ 264,000	$ (379,000)	$ (771,000)
Effective tax rate	21.50%	26.50%	36.80%	33.20%
Retroactive change in a state income tax rate	$ 100,000
Excess tax benefits associated with stock based compensation		$ 0	$ 100,000	$ 200,000
Valuation allowance	$ 0		$ 0		$ 0

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Operating Segments - Narrative (Details)	6 Months Ended
	Jun. 30, 2022 segment
Segment Reporting Information [Line Items]
Number of operating segments	2
GCR
Segment Reporting Information [Line Items]
Number of reportable segments	1
ODR
Segment Reporting Information [Line Items]
Number of reportable segments	1

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Operating Segments - Condensed Consolidated Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenue	$ 116,120	$ 121,019	$ 230,942	$ 234,363
Total gross profit	21,320	18,690	39,660	35,919
Selling, general and administrative	18,690	17,232	37,424	34,377
Change in fair value of contingent consideration	765	0	765	0
Amortization of intangibles	399	104	798	208
Operating income	1,466	1,354	673	1,334
Interest expense, net	(478)	(452)	(964)	(1,716)
Gain on disposition of property and equipment	147	94	111	8
Loss on early termination of operating lease	(32)	0	(849)	0
Loss on early debt extinguishment	0	0	0	(1,961)
Gain on change in fair value of warrant liability	0	0	0	14
Total unallocated amounts	(363)	(358)	(1,702)	(3,655)
Income (loss) before income taxes	1,103	996	(1,029)	(2,321)
Depreciation and amortization	2,086	1,469	4,148	2,964
Operating Segments | GCR
Segment Reporting Information [Line Items]
Revenue	66,336	87,550	138,268	172,354
Total gross profit	8,694	8,885	17,052	18,280
Selling, general and administrative	7,980	9,070	16,545	18,184
Depreciation and amortization	1,075	1,020	2,183	2,056
Operating Segments | ODR
Segment Reporting Information [Line Items]
Revenue	49,784	33,469	92,674	62,009
Total gross profit	12,626	9,805	22,608	17,639
Selling, general and administrative	10,135	7,526	19,705	14,880
Depreciation and amortization	612	345	1,167	700
Corporate
Segment Reporting Information [Line Items]
Selling, general and administrative	575	636	1,174	1,313
Depreciation and amortization	$ 399	$ 104	$ 798	$ 208

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Leases - Narrative (Details)		1 Months Ended		3 Months Ended		6 Months Ended
	Dec. 02, 2021 USD ($) extension	Mar. 31, 2022 USD ($) ft² installment	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($) ft² installment	Jun. 30, 2022 USD ($) extension	Dec. 31, 2021 ft²
Lessee, Lease, Description [Line Items]
Lease termination fee		$ 700,000
Lease termination fee payable, number of installments | installment		16			16
Gain on derecognition of lease assets and liabilities						$ 100,000
Loss on disposal of leasehold improvement						$ 100,000
Real Estate Leases
Lessee, Lease, Description [Line Items]
Number of lease extensions | extension						1
Office Building | Geographic Distribution, Domestic
Lessee, Lease, Description [Line Items]
Subleased area (in sq ft) | ft²		16,720			16,720		71,787
Sublease annual base rent			$ 600,000		$ 800,000
Sublease annual base rent increase percentage			3.00%		3.00%
Sublease income				$ 200,000		$ 400,000
Jake Marshall Transaction | Land and Building | Full Time Employee
Lessee, Lease, Description [Line Items]
Number of lease extensions | extension	2
Lease term	10 years
Term of lease extensions	2 years
Jake Marshall Transaction | Land and Building | Full Time Employee | Lease Contractual Term One
Lessee, Lease, Description [Line Items]
Lease term	5 years
Monthly base rent	$ 37,500
Jake Marshall Transaction | Land and Building | Full Time Employee | Lease Contractual Term Two
Lessee, Lease, Description [Line Items]
Lease term	5 years
Monthly base rent	$ 45,000

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Leases - Supplemental Balance Sheets Information (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease right-of-use assets	$ 16,644	$ 20,119
Property, plant and equipment, net	5,474	4,916
Lease right-of-use assets	22,118	25,035
Current operating lease liabilities	3,415	4,366
Current portion of long-term debt	2,465	2,451
Long-term operating lease liabilities	14,086	16,576
Long-term debt	3,200	2,681
Total lease liabilities	23,166	26,074
Operating lease, accumulated amortization	15,000	15,900
Finance lease, accumulated amortization	$ 6,000	$ 5,900
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt and Lease Obligation, Current	Long-Term Debt and Lease Obligation, Current
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt

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Leases - Summary of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Lessee, Lease, Description [Line Items]
Finance lease cost, amortization	$ 685	$ 652	$ 1,336	$ 1,327
Finance lease cost, interest expense	66	78	132	164
Total lease cost	2,039	1,999	4,154	4,035
Cost of revenue
Lessee, Lease, Description [Line Items]
Operating lease cost	657	685	1,351	1,375
Cost of revenue | Operating Lease
Lessee, Lease, Description [Line Items]
Variable lease costs	100	100	200	200
Cost of revenue | Finance Lease
Lessee, Lease, Description [Line Items]
Variable lease costs	1,000	700	1,800	1,300
Selling, general and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease cost	631	584	1,335	1,169
Selling, general and administrative expenses | Operating Lease
Lessee, Lease, Description [Line Items]
Variable lease costs	$ 100	$ 100	$ 200	$ 200

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Leases - Future Minimum Lease Commitment (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Finance Lease, Liability, Payment, Due [Abstract]
Remainder of 2022	$ 1,353
2023	1,990
2024	1,274
2025	777
2026	271
Thereafter	0
Total minimum lease payments	5,665	$ 5,132
Amounts representing interest	397
Present value of net minimum lease payments	6,062
Operating Leases
Remainder of 2022	1,894
2023	2,673
2024	2,040
2025	1,659
2026	1,493
Thereafter	6,521
Total minimum lease payments	16,280
Sublease Receipts
Remainder of 2022	(435)
2023	(885)
2024	(912)
2025	(939)
2026	(967)
Thereafter	(327)
Total minimum lease payments	(4,465)
Non-Related Party
Operating Leases
Remainder of 2022	2,104
2023	3,108
2024	2,502
2025	2,148
2026	2,010
Thereafter	2,033
Total minimum lease payments	13,905
Related Party
Operating Leases
Remainder of 2022	225
2023	450
2024	450
2025	450
2026	450
Thereafter	4,815
Total minimum lease payments	$ 6,840

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Leases - Summary of Lease Terms and Discount Rates (Details)	Jun. 30, 2022	Dec. 31, 2021
Weighted average lease term (in years):
Operating	7 years 3 months 14 days	7 years 1 month 6 days
Finance	2 years 9 months 10 days	2 years 6 months 3 days
Weighted average discount rate:
Operating	4.67%	4.68%
Finance	4.99%	5.27%

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Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Operating cash flows from operating leases	$ 2,619	$ 2,456
Operating cash flows from finance leases	132	164
Financing cash flows from finance leases	1,358	1,318
Right of use assets obtained in exchange for new operating lease liabilities	0	156
Right of use assets obtained in exchange for new finance lease liabilities	1,968	336
Right-of-use assets disposed or adjusted modifying operating leases liabilities	(1,276)	36
Right-of-use assets disposed or adjusted modifying finance leases liabilities	$ (77)	$ 0

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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands				6 Months Ended
	Jan. 26, 2022	Apr. 17, 2020	Jan. 23, 2020	Jun. 30, 2022
Loss Contingencies [Line Items]
Payment to acquire workers' compensation and general liability insurance				$ 250
Malpractice insurance, annual coverage limit				4,400
Surety Bond
Loss Contingencies [Line Items]
Debt outstanding				$ 120,100
Bernards Bros vs. Limbach Holdings, Inc. | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value			$ 3,000
LA Excavating, Inc. vs. Limbach Company LP | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value		$ 1,000
Suffolk Construction Company, Inc. | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 300

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Commitments and Contingencies - Components of Self-Insurance Liability (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Current liability — workers’ compensation and general liability	$ 282	$ 184
Current liability — medical and dental	415	456
Non-current liability	420	451
Total liability	1,117	1,091
Restricted cash	$ 113	$ 113

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Management Incentive Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 09, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation	$ 600	$ 700	$ 1,174	$ 1,313
2021 Amended And Restated Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)	2,600,000		2,600,000		2,250,000
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, vesting period			3 years
RSUs | Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, vesting period			1 year
PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, vesting period			3 years
Recognized stock-based compensation	$ 200	$ 400	$ 200	400
PRSUs | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares to be issued under grant			0.00%
PRSUs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares to be issued under grant			150.00%
Market-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target, price per share (in dollars per share)			$ 18.00
Number of consecutive trading days within performance period to meet target share price			80 days
Performance period			3 years
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards vested			$ 1,100	$ 1,300
Unrecognized share-based costs	$ 4,000		$ 4,000
Weighted average period to recognize share-based costs			1 year 9 months 18 days

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Management Incentive Plans - RSUs Activity (Details) - RSUs	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Awards
Unvested at December 31, 2021 (in shares) | shares	266,089
Granted (in shares) | shares	183,187
Vested (in shares) | shares	(120,401)
Forfeited (in shares) | shares	(24,604)
Unvested at March 31, 2022 (in shares) | shares	304,271
Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021 (usd per share) | $ / shares	$ 8.45
Granted (usd per share) | $ / shares	8.98
Vested (usd per share) | $ / shares	7.43
Forfeited (usd per share) | $ / shares	9.43
Unvested at March 31, 2022 (usd per share) | $ / shares	$ 9.10

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Management Incentive Plans - PRSUs Activity (Details) - PRSUs	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Awards
Unvested at December 31, 2021 (in shares) | shares	280,700
Granted (in shares) | shares	254,854
Vested (in shares) | shares	0
Forfeited (in shares) | shares	(41,123)
Unvested at March 31, 2022 (in shares) | shares	494,431
Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021 (usd per share) | $ / shares	$ 9.46
Granted (usd per share) | $ / shares	7.17
Vested (usd per share) | $ / shares	0
Forfeited (usd per share) | $ / shares	8.98
Unvested at March 31, 2022 (usd per share) | $ / shares	$ 8.32

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Management Incentive Plans - MRSUs Activity (Details) - Market-Based RSUs	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Awards
Unvested at December 31, 2021 (in shares) | shares	102,500
Granted (in shares) | shares	0
Vested (in shares) | shares	0
Forfeited (in shares) | shares	(8,000)
Unvested at March 31, 2022 (in shares) | shares	94,500
Weighted-Average Grant Date Fair Value
Unvested at December 31, 2021 (usd per share) | $ / shares	$ 8.26
Granted (usd per share) | $ / shares	0
Vested (usd per share) | $ / shares	0
Forfeited (usd per share) | $ / shares	8.26
Unvested at March 31, 2022 (usd per share) | $ / shares	$ 8.26

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Subsequent Events (Details) - Subsequent Event - Interest Rate Swap	Jul. 31, 2022 USD ($)
Subsequent Event [Line Items]
Notional amount	$ 10,000,000
Fixed interest rate	3.12%