Summary of Supplemental Unaudited Pro-Forma Information

The unaudited consolidated financial information summarized in the following table gives effect to the 2023, 2022, and 2021 acquisitions assuming they occurred on January 1, 2021. These unaudited consolidated pro forma operating results include results from certain acquired companies that have not been audited and whose accounting policies prior to acquisition may differ from those of the Company. As a result, these unaudited consolidated pro forma operating results may not be comparable to revenues and earnings had these consolidated pro forma results been audited and consistent accounting policies applied. These unaudited consolidated pro forma operating results do not assume any impact from revenue, cost or other operating synergies that are expected or may have been realized as a result of the acquisitions. These unaudited consolidated pro forma operating results are presented for illustrative purposes only and are not indicative of the

operating results that would have been achieved had the acquisitions occurred on January 1, 2021, nor does the information project results for any future period.


	As reported			Acquisitions Pro-Forma (Unaudited)		Consolidated Pro-Forma (Unaudited)
2023
Revenues	$	624,208		$	25,852	$	650,060
Net (loss) income		(30,859	)		809		(30,050	)
2022
Revenues	$	544,416		$	93,357	$	637,773
Net (loss) income		(31,819	)		5,535		(26,284	)
2021
Revenues	$	546,413		$	128,466	$	674,879
Net (loss) income		(25,325	)		11,457		(13,868	)

Business Acquisition [Line Items]

Summary of Final Purchase Price Attributable to Acquisitions

The preliminary purchase price attributable to the acquisitions was allocated as follows:


	Matrix (As initially reported)		Matrix Measurement Period Adjustments			Matrix (As Adjusted)		All Other 2023 Acquisitions (As Initially Reported)		All Other 2023 Acquisitions Measurement Period Adjustments			All Other 2023 Acquisitions (As Adjusted)		Total(1)
Cash	$	1,524	$	1,524		$	1,524	$	929	$	—		$	929	$	2,453
Accounts receivable and contract assets		15,752		—			15,752		3,441		(19	)		3,422		19,174
Other current assets		2,094		(262	)		1,832		439		(86	)		353		2,185
Current assets		19,370		1,262			19,108		4,809		(105	)		4,704		23,812
Property and equipment		2,231		—			2,231		1,705		—			1,705		3,936
Operating lease right-of-use asset		14,760		(9,981	)		4,779		46		—			46		4,825
Customer relationships		—		12,781			12,781		7,741		(560	)		7,181		19,962
Trade names		—		2,151			2,151		222		—			222		2,373
Covenants not to compete		—		2,198			2,198		631		(121	)		510		2,708
Other intangible assets		—		—			—		444		—			444		444
Goodwill		36,118		(8,834	)		27,284		11,702		1,800			13,502		40,786
Total assets		72,479		(423	)		70,532		27,300		1,014			28,314		98,846
Current liabilities		11,267		(668	)		10,599		978		(20	)		958		11,557
Operating lease liability—net of current portion		12,500		(2,175	)		10,325		32		—			32		10,357
Deferred tax liability		—		896			896		—		1,103			1,103		1,999
Other non-current liabilities		130		—			130		—		—			—		130
Total liabilities		23,897		(1,947	)		21,950		1,010		1,083			2,093		24,043
Purchase price	$	48,582	$	1,524		$	48,582	$	26,290	$	(69	)	$	26,221	$	74,803

______________________________

(1) The Company is continuing to obtain information to complete the valuation of certain of these acquisitions' assets and liabilities.

Summary of Elements of Original and Final Purchase Price of Acquisitions

The following table summarizes the elements of the original purchase price of the acquisitions completed during 2022:


	Cash		Common Stock		Other Purchase Price Components			Contingent Consideration		Total Purchase Price
Environmental Standards	$	14,473	$	—	$	544		$	1,166	$	16,183
All other 2022 acquisitions		15,271		—		1,134	(1)		1,500		17,905
Total	$	29,744	$	—	$	1,678		$	2,666	$	34,088

___________________________

(1) Amounts do not consider measurement period adjustments of $0.2 million recorded during 2023. See column "All Other 2022 Acquisitions Measurement Period Adjustments during 2023" in table below for further details.

Weighted Average Useful Lives for Acquired Identifiable Intangible Assets

The weighted average useful lives for the 2022 acquired companies’ identifiable intangible assets are as follows:


	Customer Relationships	Tradenames	Covenants Not to Compete
Environmental Standards	7	2	5
All other 2022 acquisitions	7	2	5

While initially anticipating making IRC §338(h)(10) elections, with respect to various acquisitions completed during the year ended December 31, 2022, the Company later decided against such elections during 2023. Therefore, goodwill associated with the IAG acquisition is the sole 2022 transaction for which goodwill is deductible for income tax purposes.

Business Acquisition [Line Items]

Summary of Final Purchase Price Attributable to Acquisitions

The final purchase price attributable to the 2021 acquisitions was allocated as follows:


	MSE		EI		All Other 2021 Acquisitions		Total
Cash	$	2,810	$	250	$	693	$	3,753
Accounts receivable and contract assets		2,980		4,675		4,133		11,788
Other current assets		31		84		289		404
Current assets		5,821		5,009		5,115		15,945
Property and equipment		513		32		1,168		1,713
Operating lease right-of-use asset—net		740		106		2,233		3,079
Customer relationships		8,720		10,073		12,830		31,623
Trade names		521		996		1,958		3,475
Covenants not to compete		922		511		1,248		2,681
Acquired technology		—		—		321		321
Goodwill		8,176		8,960		19,569		36,705
Total assets		25,413		25,687		44,442		95,542
Current liabilities		1,007		2,719		2,351		6,077
Operating lease liability—net of current portion		548		36		1,805		2,389
Total liabilities		1,555		2,755		4,156		8,466
Purchase price	$	23,858	$	22,932	$	40,286	$	87,076