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Montrose Environmental Group Inc

For the period ended Dec 31, 2024. Filed Mar 3, 2025.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2024 · Filed Mar 3, 2025

ONT$21.92+12.9%Stored close · as of Nov 6, 2026

What changed in Management’s Discussion and Analysis?

Read the current filing

Previous report: 10-K

Period ended 2023-12-31; filed 2024-02-29.

0000950170-24-023043

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Current report: 10-K

Period ended 2024-12-31; filed 2025-03-03.

0000950170-25-030806

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.

Compared 198 previous paragraphs and 145 current paragraphs.

87 unchanged; 27 reworded; 30 added; 76 removed; 8 previous and 1 current paragraphs rearranged.

Tables are not compared: 9 previous and 16 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.

A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.

Added paragraphs (30)

Current report

Our revenues and certain expenses, including selling, general and administrative expense, vary from period to period due primarily to changes in organic growth, the incremental contribution from recent acquisitions and strategic decisions we may make from time to time. When we refer to changes driven by organic growth, we are referring to the contribution from businesses that have been part of Montrose for more than 12 months, with certain limited exclusions as discussed in greater detail above. In a given reporting period, when we refer to revenue changes driven by acquisitions, we are referring to the revenue contribution from any acquisition from its closing date through the first 12 months of that acquisition, at which point any subsequent contribution therefrom would be organic.

Current report

Total debt at December 31, 2024 was $222.7 million net of deferred debt issuance costs, which was an increase of $59.5 million compared to December 31, 2023. The increase was primarily driven by the additional $50.0 million term loan and additional usage of our revolving credit facility, the outstanding balance under which increased to $25.2 million under the revolving credit facility as of December 31, 2024 from no outstanding borrowings as of December 31, 2023, partially offset by repayments and amortization of the various debt noted.

Current report

For the year ended December 31, 2024, we generated revenues of $696.4 million, an increase of $72.2 million or 11.6% from the year ended December 31, 2023. The period over period increase in revenues was primarily driven by $81.6 million from revenues pertaining to acquisitions as well as strong organic growth of 8.3% or $43.4 million driven by Assessment, Permitting and Response and Measurement and Analysis segments, partially offset by lower non-acquisition related revenue in our Remediation and Reuse segment. These increases were partially offset by $43.3 million lower environmental emergency response revenues, which we exclude from organic growth, and the December 2023 sale of the Discontinued Specialty Lab, which generated $8.8 million of revenue in 2023. Environmental emergency response revenues were $48.0 million and $91.4 million for the years ended December 31, 2024 and 2023, respectively.

Current report

Includes revenue of $8.8 million from the Discontinued Specialty Lab for the year ended December 31, 2023. See “—Discontinued Service Lines and Contracts ” above.

Current report

Cost of revenues for the year ended December 31, 2024 increased from the year ended December 31, 2023 driven primarily by an increase in revenues. Cost of revenues as a percentage of revenue dropped to 60.1% from 61.5% in 2023, primarily due to operating leverage in our labs, improved margins in our treatment technology and consulting businesses, and the benefit from acquisitions. Year-over-year cost of revenues as a percentage of revenue dropped in all three of our segments.

Current report

Selling, general and administrative expense for the year ended December 31, 2024 increased $38.8 million or 17.4% compared to the year ended December 31, 2023. This increase was primarily driven by an increase of $16.6 million related to acquisitions, an increase of $15.9 million in stock based compensation expense, primarily related to the expensing of the unamortized value of executive team stock appreciation rights (SARs), which were canceled on December 31, 2024, with the remaining changes due to inflationary increases and investments in IT infrastructure.

Current report

The increase in depreciation and amortization expense was driven primarily by $4.8 million of additional amortization related to intangibles acquired through acquisition, and $1.7 million higher depreciation related to equipment purchases.

Current report

Other expense for the year ended December 31, 2024 of $1.7 million was driven by a $1.9 million loss related to fair value adjustments on our interest rate swap and a $1.2 million loss related to fair value adjustments on the Series A-2 Preferred Stock conversion option, partially offset by $1.4 million gain from other income.

Current report

Weighted average interest rates as of December 31, 2024 and December 31, 2023 were 7.2% and 6.7%, respectively, before the benefit of interest rate swaps, and 5.8% and 4.1%, respectively, after the benefit of interest rate swaps. See “—Key Factors that Affect Our Business and Our Results—Financing Costs” and Note 7 and 13 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Current report

For a discussion of our consolidated results of operations for the year ended December 31, 2023 compared to the year ended December 31, 2022, please refer to Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the year ended December 31, 2023 filed with the SEC on February 29, 2024, or the 2023 Annual Report.

Current report

Assessment, Permitting and Response segment revenues for the year ended December 31, 2024 decreased compared to the year ended December 31, 2023 due to a decline in emergency response revenues of $43.3 million, partially offset by strong organic growth of 25.0% or $32.3 million, mainly within our consulting and advisory services, and the impact of acquisitions, which contributed $5.1 million. Emergency response revenue was $48.0 million and $91.4 million for the year ended December 31, 2024 and December 31, 2023, respectively.

Current report

Measurement and Analysis segment revenues for the year ended December 31, 2024 increased compared to the year ended December 31, 2023 as a result of strong organic growth of 15.2% or $28.2 million and the impact of acquisitions, which contributed $8.5 million, partially offset by the sale of the Discontinued Specialty Lab in December 2023, which contributed $8.8 million to revenues in 2023.

Current report

Remediation and Reuse segment revenues for the year ended December 31, 2024 increased compared to the year ended December 31, 2023, primarily driven by acquisitions which contributed $68.0 million to the increase in revenues in 2024. These increases were partially offset by $17.2 million revenue decrease in our existing business, primarily attributable to lower treatment technology revenues.

Current report

Assessment, Permitting and Response Segment Adjusted EBITDA and Segment Adjusted EBITDA margin for the year ended December 31, 2024 decreased compared to the year ended December 31, 2023 primarily due to a reduction in certain higher margin emergency response revenues that did not recur from the prior year.

Current report

Measurement and Analysis Segment Adjusted EBITDA and Segment Adjusted EBITDA margin for the year ended December 31, 2024 increased compared to the year ended December 31, 2023 primarily due to operating leverage driven by higher revenues.

Current report

Remediation and Reuse Segment Adjusted EBITDA for the year ended December 31, 2024 increased compared to the year ended December 31, 2023 due to higher revenues. Improved Segment Adjusted EBITDA margin in 2024 was driven primarily by improved operating efficiency and higher margin acquisitions.

Current report

Corporate and other costs for the year ended December 31, 2024 increased $3.2 million primarily due to increased investments in IT and cybersecurity infrastructure as well as an increase in professional fees. Corporate costs as a percentage of revenues were 5.9% in 2024 compared to 6.1% in the prior year.

Current report

For a discussion of our segment results of operations for the year ended December 31, 2023 compared to the year ended December 31, 2022, please refer to Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our 2023 Annual Report.

Current report

Net cash provided by operating activities was $22.2 million for the year ended December 31, 2024, compared to $56.0 million for the year ended December 31, 2023. The period-over-period decrease of $33.8 million, was primarily due to a higher increase in working capital in the current period of $40.4 million versus $3.3 million in the prior year period, as well as higher interest payment of $6.7 million and higher tax payments of $3.2 million, partially offset by higher cash from operating activities before changes in working capital, interest, tax and contingent earnout payment of $4.3 million, and lower contingent earnout payment of $0.6 million.

Current report

Working capital (which excludes contingent consideration payments and changes in right-of-use assets) increased by $40.4 million in the year ended December 31, 2024, primarily due to an increase in accounts receivable of $42.0 million driven by higher revenues in the fourth quarter versus the prior year, and the previously disclosed receivables from a large US government project for the City of Tustin, CA. This increase was partially offset by an increase in accounts payable and other accrued liabilities (including accrued payroll) of $2.1 million, due to the timing of payments and growth in the company.

Current report

For the year ended December 31, 2024, net cash used in investing activities was $138.0 million, driven by cash paid for the acquisitions of EPIC, 2DOT, ETA, Paragon, Spirit, and Origins, net of cash acquired, of $113.1 million, $21.3 million in purchases of property and equipment, $3.3 million in payment of other purchase price obligations. and $2.5 million of proprietary software development costs, partially offset by $2.1 million proceeds received from the sale of property and equipment.

Current report

For the year ended December 31, 2024, net cash provided by financing activities was $106.0 million. Cash provided by financing activities was driven by proceeds from borrowing of $453.1 million, net proceeds from the issuance of common stock through a public offering of $121.8 million, and proceeds from the exercise of stock options of $2.1 million, partially offset by repayment of borrowing of $393.7 million, a partial redemption of the Series A-2 Preferred Stock of $60.0 million, and dividends on the Series A-2 Preferred Stock of $11.1 million.

Current report

In February 2025, we replaced the 2021 Credit Facility with a new senior secured credit facility, the 2025 Credit Facility (and jointly the Senior Credit Facilities). Refer to Note 22 to our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data." for details on the new facility.

Current report

See Note 13 and 22 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.” for details on the 2021 Credit Facility and our new credit facility.

Current report

In January 2025, we received a notice of conversion from Oaktree in respect of $60.0 million in stated value of the Series A-2 Preferred Stock. We intend to exercise our option to redeem the shares of Series A-2 Preferred Stock for cash. We expect to pay the $60.0 million on or before April 13, 2025 from cash on hand and debt. Following the redemption, approximately $62.2 million of A-2 Preferred Stock will remain outstanding.

Current report

See Note 16 and 22 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.” for details regarding the Series A-2 Preferred Stock.
Removed paragraphs (76)

Previous report

On April 27, 2021, we entered into the 2021 Credit Facility and repaid all amounts outstanding under our prior credit facility. The 2021 Credit Facility consists of a $175.0 million term loan and a $125.0 million revolving credit facility. The revolving credit facility includes a $20.0 million sublimit for the issuance of letters of credit. The interest rate on the 2021 Credit Facility varies depending on leverage, which, prior to May 31, 2023, was a minimum of LIBOR plus 1.5% and a maximum of LIBOR plus 2.5%. We incurred debt extinguishment costs of $4.1 million in connection with this refinancing. Further, on May 31, 2023, we amended our 2021 Credit Facility to transition the reference rate from LIBOR to SOFR plus 0.10%. The transition to SOFR did not materially impact the interest rate we pay or change any material terms of the 2021 Credit Facility.

Previous report

On May 30, 2023, we amended the interest rate swap transaction we entered into on January 27, 2022, to convert the floating component of the interest rate on $100.0 million of borrowings to 1-Month Term SOFR and a new coupon of 1.319% until January 27, 2025. Prior to the amendment, the floating component of the interest rate was 1.39%. Further, on May 30, 2023, we entered into a second interest rate swap transaction fixing the floating component of the interest rate on an additional $70.0 million of borrowings to 1-Month Term SOFR and a coupon of 3.88% until April 27, 2026.

Previous report

To date, COVID-19 related adverse impacts have not had a material adverse effect on our reported results or our liquidity. On the other hand, we have seen benefits from COVID-19 given client demand for CTEH’s toxicology and response services, which represented a meaningful revenue stream, in 2021 and to a lesser extent, 2022, primarily as a result of COVID-19 response work performed by CTEH. COVID-19 revenues were negligible in the year ended December 31, 2023. Given the significance and non-recurring nature of our COVID-19 related revenues in prior periods, our historical results may not be comparable to future results.

Previous report

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act, or the CARES Act, was enacted. The CARES Act included several significant provisions for corporations, including those pertaining to net operating losses, interest deductions and payroll tax benefits. We utilized certain of these provisions in 2020, including the deferral of the employer side social security payments for payroll for the eligible portion of the year. In total, we deferred approximately $5.0 million of 2020 payments to 2021 and 2022, of which $2.5 million was repaid in December 2021 and the remaining amount was paid in the fourth quarter of 2022.

Previous report

For the year ended December 31, 2023, we generated revenues of $624.2 million, an increase of $79.8 million or 14.7% from the year ended December 31, 2022. The period over period increase in revenues was primarily driven by $77.5 million from revenues pertaining to companies we acquired in 2023 and from a full year of revenue contribution from our 2022 acquisitions, strong organic growth in our Assessment, Permitting and Response segment and strong organic growth in our Measurement and Analysis segment, and an increase in environmental emergency response revenues. These increases were partially offset by lower revenues in the Discontinued Specialty Lab, the exiting of the Discontinued O&M Contracts in 2022, and lower ECT2 revenues due to the wind down of certain large PFAS projects, delays in the timing of EPA PFAS regulations and a strategic shift in our biogas business towards higher margin services. Revenue from our environmental emergency response business, including revenues from COVID-19 related work, was $91.4 million in the year ended December 31, 2023, compared to $88.0 million in the year ended December 31, 2022. Total revenue from COVID-19 related services was $4.7 million and $65.2 million in the years ended December 31, 2023 and December 31, 2022, respectively. Revenue from the Discontinued Specialty Lab was $8.8 million and $17.0 million in the years ended December 31, 2023 and December 31, 2022, respectively. The Discontinued O&M Contracts generated revenues of zero and $3.6 million in the years ended December 31, 2023 and December 31, 2022, respectively.

Previous report

(1) Includes revenue of $8.8 million and $17.0 million from the Discontinued Specialty Lab for the year ended December 31, 2023 and December 31, 2022, respectively. See “—Discontinued Service Lines and Contracts ” above.

Previous report

For the year ended December 31, 2023, cost of revenues was $383.9 million or 61.5% of revenues, and was comprised of direct labor of $187.0 million, outside services (including contracted labor, laboratory, shipping and freight and other outside services) of $95.3 million, field supplies, testing supplies and equipment rental of $66.9 million, project-related travel expenses of $21.7 million and other direct costs of $13.0 million.

Previous report

For the year ended December 31, 2022, cost of revenues was $351.9 million or 64.6% of revenues, and was comprised of direct labor of $155.0 million, outside services (including contracted labor, laboratory, shipping and freight and other outside services) of $83.3 million, field supplies, testing supplies and equipment rental of $77.9 million, project-related travel expenses of $19.3 million and other direct costs of $16.4 million.

Previous report

For the year ended December 31, 2023, cost of revenues as a percentage of revenue decreased 3.1% from the year ended December 31, 2022, primarily as a result of a $11.0 million decrease in field and testing supplies and equipment rental costs due to a decline in the percentage of total revenue from Remediation and Reuse projects, which tend to have higher cost of sales as a percentage of revenue, and a decrease of $9.5 million in direct labor attributable to a shift in roles and responsibilities as described under the Selling, General and Administrative Expense section below.

Previous report

For the year ended December 31, 2023, selling, general and administrative expense of $222.9 million was comprised of indirect labor of $114.0 million, stock-based compensation expense of $43.9 million, facilities costs of $23.0 million, acquisition-related costs of $6.9 million, bad debt expense of $3.1 million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $32.0 million.

Previous report

For the year ended December 31, 2022, selling, general and administrative expense of $176.3 was comprised of indirect labor of $80.6 million, stock-based compensation of $41.8 million, facilities costs of $18.2 million, acquisition-related costs of $1.9 million, a bad debt recovery of $(1.1) million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $34.9 million.

Previous report

Depreciation and amortization expense for the year ended December 31, 2023, was $45.8 million and was comprised of amortization of finite lived intangibles of $30.1 million, arising as a result of our acquisition activity, depreciation of property and equipment of $10.3 million and finance leases right-of-use asset amortization of $5.4 million.

Previous report

Depreciation and amortization expense for the year ended December 31, 2022, was $47.5 million and was comprised of amortization of finite lived intangibles of $36.1 million, arising as a result of our acquisition activity, depreciation of property and equipment of $7.2 million and finance leases right-of-use asset amortization of $4.2 million.

Previous report

The decrease in amortization was primarily a result of the timing of when certain large value intangible assets became fully amortized during the year ended December 31, 2023 versus the year ended December 31, 2022. The increases in depreciation of property and equipment and the amortization of finance leases were primarily a result of higher property and equipment and right of use assets outstanding during the year ended December 31, 2023 when compared to the year ended December 31, 2022.

Previous report

Other income for the year ended December 31, 2022 of $3.7 million was driven by a gain related to the fair value adjustment on our interest rate swap of $6.0 million which was partially offset by an expense of $2.7 million related to the fair value adjustment of the Series A-2 preferred stock conversion option and $0.7 million impairment loss related to the decision to exit the Berkeley lab.

Previous report

For the year ended December 31, 2022, revenues were $544.4 million, a decrease of $2.0 million or 0.4% from the year ended December 31, 2021. The period over period decrease in revenues was primarily driven by an expected reduction in revenue from environmental emergency responses due to lower demand for COVID-19 related services, of $123.5 million, and exiting the Discontinued O&M Contracts. The decrease was mostly offset by strong organic growth in our Measurement and Analysis and Remediation and Reuse operating segments, and the businesses in our Assessment, Permitting and Response operating segment other than environmental emergency responses, which contributed $121.1 million in organic revenue. The decrease was offset to a lesser extent by acquisitions completed in the year ended December 31, 2022, as well as by 2021 acquisitions prior to their one-year anniversary date, which performed well and captured revenue synergies as part of Montrose. In the aggregate, 2021 and 2022 acquisitions contributed revenues of $44.5 million. Revenue from our environmental emergency response business, which includes COVID-19 revenues, was $88.0 million in the year ended December 31, 2022 as compared to $211.5 million in the year ended December 31, 2021. Total revenue from COVID-19 related services was $65.2 million and $189.9 million in the years ended December 31, 2022 and 2021, respectively. Discontinued O&M Contracts generated revenues of $3.6 million and $12.1 million in the years ended December 31, 2022 and 2021, respectively.

Previous report

(1) Includes revenue of $17.0 million and $23.9 million from the Discontinued Specialty Lab for the year ended December 31, 2022 and 2021, respectively. See “—Discontinued Service Lines and Contracts ” above.

Previous report

For the year ended December 31, 2022, cost of revenues was $351.9 million or 64.6% of revenues, and was comprised of direct labor of $155.0 million, outside services (including contracted labor, laboratory, shipping and freight and other outside services) of $83.3 million, field supplies, testing supplies and equipment rental of $77.9 million, project-related travel expenses of $19.3 million and other direct costs of $16.4 million.

Previous report

For the year ended December 31, 2021, cost of revenues was $369.0 million or 67.5% of revenues, and was comprised of direct labor of $147.3.0 million, outside services (including contracted labor, laboratory, shipping and freight and other outside services) of $143.3 million, field supplies, testing supplies and equipment rental of $50.2 million, project-related travel expenses of $17.8 million and other direct costs of $10.4 million.

Previous report

For the year ended December 31, 2022, cost of revenues as a percentage of revenue decreased 2.9% from the year ended December 31, 2021, as a result of significantly lower outside service costs in 2022 when compared to 2021 driven primarily by a decrease in external lab expenses needed to support CTEH’s COVID-19 response work during 2022, partially offset by higher equipment costs primarily to support higher water treatment and biogas revenues.

Previous report

For the year ended December 31, 2022, selling, general and administrative expense was $176.3 million, an increase of $58.6 million or 49.8% versus the year ended December 31, 2021. This increase was primarily driven by $33.0 million related to an increase in stock compensation expense primarily related to a one-time grant of restricted stock awards and stock appreciation rights to certain executives and selected employees (See Note 17 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”), $10.2 million from selling, general and administrative expense pertaining to companies we acquired in 2022 and from 2021 acquisitions prior to their one-year anniversary date, $5.4 million related to the higher labor and medical benefit costs, primarily reflecting inflationary increases, an increase in headcount to support growth in our PFAS water treatment business, and investments in corporate infrastructure (primarily administrative, marketing, finance, IT, legal and human resources) and $3.1 million was from an increase in the defined contribution plan employer contributions following the reinstatement of employer matching during the second quarter of 2021, as well as higher travel and office function expenses.

Previous report

For the year ended December 31, 2022, selling, general and administrative expense of $176.3 was comprised of indirect labor of $80.6 million, stock-based compensation of $41.8 million, facilities costs of $18.2 million, acquisition-related costs of $1.9 million, a bad debt recovery of $(1.1) million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $34.9 million.

Previous report

For the year ended December 31, 2021, selling, general and administrative expense of $117.7 million was comprised of indirect labor of $61.2 million, facilities costs of $14.7 million, stock-based compensation of $8.8 million, acquisition-related costs of $2.1 million, bad debt expense of $1.1 million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $29.8 million.

Previous report

For the year ended December 31, 2022, fair value changes in business acquisition contingencies resulted in a gain of $3.2 million versus an expense of $24.4 million for the year ended December 31, 2021. The majority of the change in value in the year ended December 31, 2022, was attributable to a $3.5 million gain related to acquisitions' 338(h)(10) elections make-whole tax accruals. The majority of the change in value in the year ended December 31, 2021 period was attributable to the CTEH earn-outs. See “—Key Factors that Affect Our Business and Our Results —Acquisitions” and Notes 8 and 14 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Previous report

Depreciation and amortization expense for the year ended December 31, 2022, was $47.5 million and was comprised of amortization of finite lived intangibles of $36.1 million, arising as a result of our acquisition activity, depreciation of property and equipment of $7.2 million and finance leases right-of-use asset amortization of $4.2 million.

Previous report

Depreciation and amortization expense for the year ended December 31, 2021, was $44.8 million and was comprised of amortization of finite lived intangibles of $35.2 million, depreciation of property and equipment of $6.4 million and finance leases right-of-use asset amortization of $3.2 million.

Previous report

The increase in amortization, depreciation of property and equipment and the amortization of finance leases right-of-use asset for the year ended December 31, 2022 versus the year ended December 31, 2021, was primarily a result of acquisitions. See Notes 6, 7, 8 and 9 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Previous report

Other income for the year ended December 31, 2022 of $3.7 million was driven by a gain related to the fair value adjustment on our interest rate swap of $6.0 million which was partially offset by an expense of $2.7 million related to the fair value adjustment of the Series A-2 preferred stock conversion option and $0.7 million impairment loss related to the decision to exit the Berkeley lab. Other expense for the year ended December 31, 2021 of $2.5 million was driven primarily by fair value adjustments related to the Series A-2 preferred stock conversion option. See Notes 14, 16 and 19 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Previous report

Interest expense, net incurred in the year ended December 31, 2022, was $5.2 million, compared to $11.6 million for the year ended December 31, 2021. The decrease in interest expense was driven by lower outstanding debt balances during the year ended December 31, 2022 when compared to the year ended December 31, 2021, as well as the $4.1 million loss on extinguishment of debt realized in the year ended December 31, 2021 in connection with the repayment in full of the 2020 Credit Facility. See Note 13 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

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Reworded paragraphs (27)

Previous wording

Since our inception in 2012, our mission has been to help clients and communities meet their environmental goals and needs. According to data derived from a 2022 Environmental Industry Study prepared by Environmental Business International, Inc., or EBI, which we commissioned, the global environmental industry is estimated to be approximately $1.44 trillion, with $494.0 billion concentrated in the United States.

Current wording

Since our inception in 2012, our mission has been to help clients and communities meet their environmental goals and needs. According to data derived from a 2024 Environmental Industry Study prepared by Environmental Business International, Inc., or EBI, which we commissioned, the global environmental industry is estimated to be approximately $1.6 trillion, with $540.0 billion concentrated in the United States.

Previous wording

Through our Assessment, Permitting and Response segment, we primarily provide scientific advisory and consulting services to support environmental assessments, environmental emergency response, and environmental audits and permits for current operations, facility upgrades, new projects, decommissioning projects and development projects. Our technical advisory and consulting offerings include regulatory compliance support and planning, environmental, ecosystem and toxicological assessments and support during responses to environmental disruption. We help clients navigate regulations at the local, state, provincial and federal levels.

Current wording

Assessment, Permitting and Response segment provides scientific advisory and consulting services to support environmental assessments, environmental emergency response and recovery, toxicology consulting and environmental audits and permits for current operations, facility upgrades, new projects, decommissioning projects and development projects. We work closely with clients to navigate the regulatory process at the local, state, provincial and federal levels, identify the potential environmental and political impacts of their decisions and develop practical mitigation approaches, as needed. In addition to environmental toxicology, and given our expertise in helping businesses plan for and respond to disruptions, our scientists and response teams have helped clients navigate their preparation for and response to emergency response situations.

Previous wording

Through our Measurement and Analysis segment, our highly credentialed teams test and analyze air, water and soil to determine concentrations of contaminants, as well as the toxicological impact of contaminants on flora, fauna and human health. Our offerings include source and ambient air testing and monitoring, leak detection and advanced analytical laboratory services such as air, storm water, wastewater and drinking water analysis.

Current wording

Measurement and Analysis segment is one of the largest providers of environmental testing and laboratory services in North America. Our highly credentialed teams test and analyze air, water and soil to determine concentrations of contaminants, as well as the toxicological impact of contaminants on flora, fauna and human health. Our offerings include source and ambient air testing and monitoring, leak detection, and advanced multi-media laboratory services, including air, soil, stormwater, wastewater and drinking water analysis.

Previous wording

Through our Remediation and Reuse segment, we provide clients with engineering, design, and implementation services, primarily to treat contaminated water, remove contaminants from soil or create biogas from waste. We do not own the properties or facilities at which we implement these projects or the underlying liabilities, nor do we own material amounts of the equipment used in projects; instead, we assist our clients in designing solutions, managing projects and mitigating their environmental risks and liabilities.

Current wording

Remediation and Reuse segment provides clients with engineering, design, and implementation services, primarily (i) treatment technologies which treat contaminated water or create renewable energy from waste, or (ii) soil remediation. Our employees, including engineers, scientists and consultants, provide these services to assist our clients in designing solutions, managing products and mitigating environmental risks and liabilities at their locations. We do not own the properties or facilities at which we implement these projects or the underlying liabilities, nor do we own material amounts of the equipment used in projects.

Previous wording

We have been, and expect to continue to be, an acquisitive company. Acquisitions have expanded our environmental service capabilities across all three segments, our access to technology, as well as our geographic reach in the United States, Canada, Europe and Australia. See Item 1. “Business—Strategic Acquisitions.” The table below sets forth the number of acquisitions completed in each of the last three fiscal years, fiscal year revenues generated by and the percentage of total annual revenues attributable to those acquisitions:

Current wording

We have been, and expect to continue to be, an acquisitive company. Acquisitions have expanded our environmental service capabilities across all three segments, our access to technology, as well as our geographic reach in the United States, Canada, Europe and Australia. See Item 1. “Business—Strategic Acquisitions.” The table below sets forth the number of acquisitions completed in each of the last three fiscal years, fiscal year revenues contributed by those acquisitions in the year of acquisition, and the percentage of total annual revenues attributable to those acquisitions:

Previous wording

We may also make up to $7.1 million in aggregate earn-out payments between the years 2024 and 2026 in connection with certain of our acquisitions of which up to $1.5 million may be paid only in cash, up to $4.5 million may be paid only in common stock and up to $1.1 million may be paid in cash or, at our option, in common stock. These amounts reflect a $1.5 million earn-out payment made in the first quarter of 2024 in connection with our Huco acquisition, $1.1 million of which was paid in shares of common stock and $0.4 million was paid in cash. See Note 8 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Current wording

We made earn-out payments of $1.5 million in March 2024 in connection with our acquisition of Huco Consulting, Inc. (Huco), of which, $0.4 million was paid in cash, and the remaining $1.1 million in the Company's common stock. In connection with certain of our acquisitions, we may make up to $57.6 million in aggregate earn-out payments between the years 2025 and 2026, of which up to $22.1 million may be paid only in cash, up to $13.6 million may be paid only in common stock and up to $21.9 million may be paid, at our option, in cash or common stock. See Note 8 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Previous wording

We define organic growth as the change in revenues excluding revenues from i) our environmental emergency response business, ii) acquisitions for the first twelve months following the date of acquisition, and iii) businesses held for sale, disposed of or discontinued. As a result of the growth in CTEH non-emergency response work, which is similar to services provided in our advisory businesses, we are including CTEH revenues from non-emergency response work in organic growth. This change did not impact previously reported organic growth. Management uses organic growth as one of the means by which it assesses our results of operations. Organic growth is not, however, a measure of revenue growth calculated in accordance with U.S. generally accepted accounting principles, or GAAP, and should be considered in conjunction with revenue growth calculated in accordance with GAAP. We have grown organically over the long term and expect to continue to do so.

Current wording

We define organic growth as the change in revenues excluding revenues from i) our environmental emergency response business, ii) acquisitions for the first twelve months following the date of acquisition, and iii) businesses held for sale, disposed of or discontinued. Management uses organic growth as one of the means by which it assesses our results of operations. Organic growth is not, however, a measure of revenue growth calculated in accordance with

Previous wording

As part of this evaluation, during the first quarter of 2023, we determined to discontinue one of our specialty service lines within the lab testing business, the Discontinued Specialty Lab, whose service offering was non-core to our business. On December 29, 2023, we sold the assets of the Discontinued Specialty Lab for a total sales price of $4.8 million. Proceeds from the sale were paid in cash of $0.5 million, and a promissory note receivable of $4.3 million. We recorded a gain on the sale of the assets of approximately $1.8 million and recorded a current expected loss of $2.2 million against the promissory note receivable. The Discontinued Specialty Lab, which was part of our Measurement and Analysis segment, generated revenues of $8.8 million, $17.0 million and $23.9 million in the years ended December 31, 2023, 2022 and 2021, respectively. The discontinuation of this specialty service line did not represent a strategic shift that had a major effect on our operations and financial results, therefore it did not meet the requirements to be classified as discontinued operations.

Current wording

As part of this evaluation, during the first quarter of 2023, we determined to sell one of our specialty lab testing businesses, the Discontinued Specialty Lab, whose service offering was non-core to our business. On December 29, 2023, we sold the assets of the Discontinued Specialty Lab for a total sales price of $4.8 million. Proceeds from the sale were paid in cash of $0.5 million, and a promissory note receivable of $4.3 million. We recorded a gain on the sale of the assets of approximately $1.8 million and recorded a current expected loss of $2.2 million against the promissory note receivable. The Discontinued Specialty Lab, which was part of our Measurement and Analysis segment, generated revenues of $8.8 million and $17.0 million in the years ended December 31, 2023 and 2022, respectively. The discontinuation of this specialty service line did not represent a strategic shift that had a major effect on our operations and financial results, therefore it did not meet the requirements to be classified as discontinued operations.

Previous wording

During the fourth quarter of 2022, we determined to exit our lab in Berkeley, California and terminate the related positions. This discontinued lab, which was included in our Measurement and Analysis segment, did not generate any material revenue during the years ended December 31, 2022 and 2021.

Current wording

During the fourth quarter of 2022, we determined to exit our lab in Berkeley, California and terminate the related positions. This discontinued lab, which was included in our Measurement and Analysis segment, did not generate any material revenue during the year ended December 31, 2022.

Previous wording

During the second quarter of 2022, we determined to exit all legacy water treatment and biogas operations and maintenance contracts, collectively, the Discontinued O&M Contracts. Revenue from our water treatment and biogas operations and maintenance contracts, which were included in the results of our Remediation and Reuse segment, were $3.6 million and $12.1 million in the years ended December 31, 2022 and 2021, respectively. This decision did not impact the Company’s specialized PFAS water treatment operations and maintenance contracts.

Current wording

During the second quarter of 2022, we determined to exit all legacy water treatment and renewable energy operations and maintenance contracts, collectively, the Discontinued O&M Contracts. Revenue from our water treatment and renewable energy operations and maintenance contracts, which were included in the results of our Remediation and Reuse segment, were $3.6 million in the year ended December 31, 2022. This decision did not impact the Company’s specialized PFAS water treatment operations and maintenance contracts.

Previous wording

Our segments generate different levels of profitability and, accordingly, shifts in the mix of revenues between segments can impact our consolidated reported net income, net loss margin, Segment Adjusted EBITDA and Segment Adjusted EBITDA margin from quarter to quarter and year to year. Inter-company revenues between business lines within segments have been eliminated. See Note 19 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Current wording

Our segments and our business lines within each segment generate different levels of profitability and, accordingly, shifts in the mix of revenues between segments can impact our consolidated reported net income, net loss margin, Segment Adjusted EBITDA and Segment Adjusted EBITDA margin from quarter to quarter and year to year. Inter-company revenues between business lines within segments have been eliminated. See Note 19 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Previous wording

Interest expense, net was $7.8 million, $5.2 million and $11.6 million (inclusive of the $4.1 million loss on extinguishment of the 2020 Credit Facility) in the years ended December 31, 2023, 2022 and 2021, respectively. We expect interest expense to remain a significant cost as we continue to leverage our credit facility to support our operations and future acquisitions.

Current wording

Interest expense, net was $15.9 million, $7.8 million and $5.2 million in the years ended December 31, 2024, 2023 and 2022, respectively. We expect interest expense to remain a significant cost as we continue to leverage the 2021 Credit Facility to support our operations, partially fund the redemption of the Series A-2 Preferred Stock, and to fund future acquisitions.

Previous wording

See Note 13 and 22 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Current wording

In February 2025, we refinanced our 2021 Credit Facility and replaced it with a new 2025 Credit Facility. See Notes 13 and 22 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Previous wording

Due to the field-based nature of certain of our services, weather patterns generally impact our field-based teams’ ability to operate in the winter months. As a result, our operating results in our Measurement and Analysis segment and, following the acquisition of Matrix in Canada, the Remediation and Reuse segment, experience quarterly variability with generally lower revenues and lower earnings in the first and fourth quarters and higher overall revenues and earnings in the second and third quarters. As we continue to grow and expand into new geographies and service lines, quarterly variability in our Measurement and Analysis and Remediation and Reuse segments may deviate from historical trends.

Current wording

Due to the field-based nature of certain of our services, weather patterns generally impact our field-based teams’ ability to operate in the winter months. As a result, our operating results could experience quarterly variability with generally lower revenues and lower earnings in the first and fourth quarters and higher overall revenues and earnings in the second and third quarters. As we continue to grow and expand into new geographies and service lines, quarterly variability in our Measurement and Analysis and Remediation and Reuse segments may deviate from historical trends.

Previous wording

In addition to the impact of seasonality on earnings, the acquisition of CTEH exposes us to potentially significant revenue and earnings fluctuations tied both to the timing of large environmental emergency response projects following an incident or natural disaster, and the benefit from COVID-19 related work primarily in 2021. COVID-19 related revenue was $4.7 million, $65.2 million and $189.9 million in the years ended December 31, 2023, 2022 and 2021, respectively. During 2023, we have also seen significant revenue from emergency response services related to discrete events. Total revenue from emergency response related services, which include COVID-19 revenues, was $91.4 million, $88.0 million and $211.5 million in the in the years ended December 31, 2023, 2022 and 2021, respectively. Demand for environmental emergency response services remains difficult to predict and as a result, we may have experienced revenues and earnings in prior years that are not indicative of future results, making those periods particularly difficult comparisons for future periods. Earnings volatility is also driven by the timing of large projects, particularly in our Remediation and Reuse segment, and the impact of acquisitions. As a result of these factors, and because demand for environmental services is not driven by specific or predictable patterns in one or more fiscal quarters, our business is better assessed based on yearly results.

Current wording

In addition to the impact of seasonality on earnings, our emergency response business exposes us to potentially significant revenue and earnings fluctuations tied to large environmental emergency response projects following an incident or natural disaster or more broad scale events such as the COVID-19 pandemic. Total revenue from emergency response related services was $48.0 million, $91.4 million, and $88.0 million in the years ended December 31, 2024, 2023 and 2022, respectively. Demand for environmental emergency response services remains difficult to predict and as a result, we may have experienced revenues and earnings in prior years that are not indicative of future results, making those periods particularly difficult comparisons for future periods. Earnings volatility is also driven by the timing of large projects, particularly in our Remediation and Reuse segment, and the impact of acquisitions. As a result of these factors, and because demand for environmental services is not driven by specific or predictable patterns in one or more fiscal quarters, our business is better assessed based on annual results.

Previous wording

For the year ended December 31, 2023, selling, general and administrative expense was $222.9 million, an increase of $46.6 million or 26.4% versus the year ended December 31, 2022. This increase was primarily driven by an increase of approximately $9.5 million related to the impact of the shift of employee roles and responsibilities of certain employees from providing direct field support (and therefore included in cost of revenues in 2022), to providing more specialized, multi-location overhead support functions (such as accounting, HR and management) and therefore included in selling general and administrative expenses in the current year. The increase was also driven by acquisitions and by higher labor and medical benefit costs, primarily reflecting inflationary increases. Selling, general and administrative expense pertaining to companies we acquired in 2023 and from the inclusion of a full year of results from 2022 acquisitions accounted for $21.7 million of the increase. The year-over-year increase was also driven by a $5.0 million increase in acquisition-related costs, $4.2 million related to an increase in bad debt expense (which was a charge of $3.1 million in the current year, versus a credit of $(1.1) million in the prior year), $2.2 million related to an increase in the defined contribution plan, $2.1 million increase in stock-based compensation expense, and the timing of certain external expenditures, which occurred later in the year in 2022, partially offset by a gain on the sale of the assets of the Discontinued Specialty Lab of $1.8 million. See “—Key Factors that Affect Our Business and Our Results —Discontinued Service Lines and Contracts” and Item 7A. “Quantitative and Qualitative Disclosures About Market Risk” for additional information regarding the impact of inflation on our business.

Current wording

See Item 7A. “Quantitative and Qualitative Disclosures About Market Risk” for additional information regarding the impact of inflation on our business and Note 17 to our audited consolidated financial statements included in Item 8. "Financial Statements and Supplementary Data." for details on the SARs cancellation.

Previous wording

For the year ended December 31, 2023, fair value changes in business acquisition contingencies resulted in an expense of $0.1 million versus a gain of $3.2 million for the year ended December 31, 2022. The majority of the change in value in the year ended December 31, 2022, was attributable to a $3.5 million gain related to acquisitions' 338(h)(10) elections make-whole tax accruals. See “—Key Factors that Affect Our Business and Our Results —Acquisitions” and Notes 8 and 14 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Current wording

For the year ended December 31, 2024, fair value changes in business acquisition contingencies resulted in an expense of $0.5 million versus a gain of $0.1 million for the year ended December 31, 2023.

Previous wording

Other income for the year ended December 31, 2023 of $4.4 million was driven by the fair value adjustment of the Series A-2 preferred stock conversion option of $6.7 million, partially offset by the fair value adjustment on our interest rate swap of $2.6 million.

Current wording

Other income for the year ended December 31, 2023 of $4.4 million was driven by a $6.7 million gain related to fair value adjustments on the Series A-2 Preferred Stock conversion option and a $0.3 million gain from other income, partially offset by a $2.6 million loss related to fair value adjustments on our interest rate swap.

Previous wording

Interest expense, net incurred in the year ended December 31, 2023, was $7.8 million, compared to $5.2 million for the year ended December 31, 2022. The increase in interest expense was primarily due to higher interest rates, an increase in interest expense as a result of the new aircraft loan, and lower interest income as a result of lower average cash balances, partially offset by the impact of the second interest rate swap transaction entered into on May 30, 2023. See “—Key Factors that Affect Our Business and Our Results—Financing Costs” and Note 7 and 13 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Current wording

Interest expense, net incurred in the year ended December 31, 2024, was $15.9 million, compared to $7.8 million for the year ended December 31, 2023. The increase in interest expense was primarily due to higher interest rates and higher debt balance outstanding during the year.

Previous wording

Income tax (benefit) expense was $(1.0) million and $2.3 million for the years ended December 31, 2023 and 2022, respectively. The difference between our effective tax rate of 3.3% and the federal statutory rate of 21.0% is primarily attributable to items recorded for GAAP but permanently disallowed for U.S. federal income tax purposes, recognition of a U.S. federal and state valuation allowance of $24.0 million, state and foreign income tax provisions and Global Intangible Low Taxed Income.

Current wording

Income tax expense (benefit) was $8.0 million and $(1.0) million for the years ended December 31, 2024 and 2023, respectively. The difference between our effective tax rate and the federal statutory rate of 21.0% is primarily attributable to items recorded for GAAP but permanently disallowed for U.S. federal income tax purposes, change in valuation allowance, and state and foreign income tax provisions.

Previous wording

Our principal sources of liquidity have been cash generated by operating activities, borrowings under our credit facilities, other borrowing arrangements, and proceeds from the issuance of common and preferred stock. Historically, we have financed our operations and acquisitions from a combination of cash generated from operations, periodic borrowings under senior secured credit facilities, and proceeds from the issuance of common and preferred stock. Our primary cash needs are for day to day operations, to fund working capital requirements, to fund our acquisition strategy and any related cash earn-out obligations, to pay interest and principal on our indebtedness and dividends on our Series A-2 preferred stock, and to make capital expenditures. Additionally, in connection with certain acquisitions, we agree to earn-out provisions and other purchase price adjustments that may require future payments. For example, the CTEH acquisition agreement included an earn-out provision that provided for the payment of contingent consideration based on CTEH’s results in excess of a specified target. CTEH fully achieved the target in 2021 and a $30.0 million earn-out payment was paid in cash in the first quarter of 2022. See Note 8 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data."

Current wording

Our principal sources of liquidity have been cash generated by operating activities, borrowings under our credit facilities, other borrowing arrangements, and proceeds from the issuance of common and our Series A-2 Preferred Stock. Historically, we have financed our operations and acquisitions from a combination of cash generated from operations, periodic borrowings under senior secured credit facilities, and proceeds from the issuance of common stock and our Series A-2 Preferred Stock. Our primary cash needs are for day-to-day operations, to fund working capital requirements, to fund our acquisition strategy and any related cash earn-out obligations, to pay interest and principal on our indebtedness and dividends on our Series A-2 Preferred Stock, and to make capital expenditures. Additionally, in connection with certain acquisitions, we agree to earn-out provisions and other purchase price adjustments that may require future payments. We may make up to $57.6 million in aggregate earn-out payments between the years 2025 and 2026 in connection with certain of our acquisitions of which up to $22.1 million may be paid only in cash, up to $13.6 million may be paid only in common stock and up to $21.9 million may be paid in cash or, at our option, in common stock. See Note 8 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data." As of December 31, 2024, the Company had $149.8 million available under its 2021 Credit Facility (without giving effect to any outstanding letters of credit, and subject to borrowing base limitations), and $12.9 million of cash on hand. In February 2025, the Company refinanced its Credit Facility (2025 Credit Facility) bringing total available capacity under the 2025 Credit Facility to $283.8 million (without giving effect to any outstanding letters of credit, and subject to borrowing base limitations).

Previous wording

Our obligations under the 2021 Credit Facility are guaranteed by certain of our existing and future direct and indirect subsidiaries, and such obligations are secured by substantially all of our assets. The 2021 Credit Facility includes a number of covenants imposing certain restrictions on our business. The 2021 Credit Facility also includes financial covenants requiring us to remain below a maximum total net leverage ratio and a minimum fixed charge coverage ratio. As of December 31, 2023, our consolidated total leverage ratio was 1.9 times and we were in compliance with all covenants under the 2021 Credit Facility.

Current wording

Our obligations under the Senior Credit Facilities are guaranteed by certain of our existing and future direct and indirect subsidiaries, and such obligations are secured by substantially all of our assets. The Senior Credit Facilites includes a number of covenants imposing certain restrictions on our business. The Senior Credit Facilites also include financial covenants requiring us to remain below a maximum total net leverage ratio and a minimum fixed charge coverage ratio. As of December 31, 2024, our consolidated total leverage ratio as reported under our bank compliance certificate, which was delivered under our 2025 Credit Facility, was 2.1 times and we were in compliance with all covenants under the Senior Credit Facilites.

Previous wording

The weighted average interest rate on the 2021 Credit Facility for the years ended December 31, 2023 and 2022 was 6.7% and 3.5%, respectively, before the benefit of our interest rate swaps. Weighted average interest rates, net of the benefit of our interest rate swaps, as of December 31, 2023 and 2022 were 4.1% and 2.3%, respectively.

Current wording

The weighted average interest rate on the 2021 Credit Facility for the years ended December 31, 2024 and 2023 was 7.2% and 6.7%, respectively, before the benefit of our interest rate swaps. Weighted average interest rates, net of the benefit of our interest rate swaps, as of December 31, 2024 and 2023 were 5.8% and 4.1%, respectively.

Previous wording

On the majority of fixed fee contracts, we recognize revenue, over time, using either the proportion of actual costs incurred to the total costs expected to complete the contract performance obligation, or the cost to cost method, under the time-elapsed basis.

Current wording

On the majority of fixed fee contracts, we recognize revenue, over time, using either the proportion of actual costs incurred to the total costs expected to complete the contract performance obligation (cost to cost method), or the time-elapsed basis.

Previous wording

Time-and-materials contracts contain variable consideration. However, performance obligations qualify for the “Right to Invoice” Practical Expedient. Under this practical expedient, we are allowed to recognize revenue, over time, in the amount to which we have a right to invoice.

Current wording

Time-and-materials contracts contain variable consideration. However, performance obligations qualify for the “Right to Invoice” practical expedient. Under this practical expedient, we recognize revenue, over time, in the amount to which we have a right to invoice.

Previous wording

We use a two-step process to assess the realizability of goodwill. The first step (generally referred to as a "step 0" analysis) is a qualitative assessment that analyzes current economic indicators associated with a particular reporting unit. For example, we analyze changes in economic, market and industry conditions, business strategy, cost factors, and financial performance, among others, to determine if there are indicators of a significant decline in the fair value of a particular reporting unit. If the qualitative assessment indicates a stable or improved fair value, no further testing is required. If a qualitative assessment indicates it is more likely than not that the fair value of a reporting unit is less than its carrying amount, we will proceed to the quantitative second step (generally referred to as a "step 1" analysis) where the fair value of a reporting unit is calculated based on weighted income and market-based approaches. If the fair value of a reporting unit is lower than its carrying value, an impairment to goodwill is recorded, not to exceed the carrying amount of goodwill in the reporting unit.

Current wording

We use a two-step process to assess the realizability of goodwill. The first step (generally referred to as a "step 0" analysis) is a qualitative assessment that analyzes current economic indicators associated with a particular reporting unit. For example, we analyze changes in economic, market and industry conditions, business strategy, cost factors, and financial performance, among others, to determine if there are indicators of a significant decline in the fair value of a particular reporting unit. If the qualitative assessment indicates a stable or improved fair value, no further testing is required. If a qualitative assessment indicates it is more likely than not that the fair value of a reporting unit is less than its carrying amount, we will proceed to the quantitative second step (generally referred to as a "step 1" analysis) where the fair value of a reporting unit is calculated based on weighted income and market-based approaches.

Previous wording

Embedded derivatives that are required to be bifurcated from the underlying host instrument are accounted for and valued as a separate financial instrument. These embedded derivatives are bifurcated, accounted for at their estimated fair value, which is based on certain estimates and assumptions, and presented separately on the consolidated statements of financial position. Changes in fair value of the embedded derivatives are recognized as a component of other income/ expense on our consolidated statements of operations.

Current wording

Embedded derivatives that are required to be bifurcated from the underlying host instrument are accounted for and valued as a separate financial instrument. These embedded derivatives are bifurcated, accounted for at their estimated fair value, which is based on certain estimates and assumptions, and presented separately on the consolidated statements of financial position. Our valuation of embedded derivatives follows the With and Without method of the income approach, where the value of the derivative is derived by comparing projected cash flows with and without the embedded feature. The discount rate reflects the level of risk associated with these cash flows and is determined based on and evaluation of the Company’s credit risk and market required yields for comparable securities with similar credit risk. To derive a credit rating indication, the Company utilizes the Synthetic Credit Rating Model, and the recovery rate method is employed to establish the Company’s discount rate. Changes in fair value of the embedded derivatives are recognized as a component of other income/ expense on our consolidated statements of operations.
Rearranged current paragraphs (1)

Current report — wording carried from elsewhere

U.S. generally accepted accounting principles, or GAAP, and should be considered in conjunction with revenue growth calculated in accordance with GAAP. We have grown organically over the long term and expect to continue to do so.
Rearranged previous paragraphs (8)

Previous report — wording carried elsewhere

We made earn-out payments of $30.0 million and $50.0 million in March 2022 and April 2021, respectively, in connection with our CTEH acquisition. $25.0 million of the 2021 CTEH earn-out payment was made in the form of shares of our common stock. In connection with certain of our acquisitions, we may make up to $7.1 million in aggregate earn-out payments between the years 2024 and 2026, of which up to $1.5 million may be paid only in cash, up to $4.5 million may be paid only in common stock and up to $1.1 million may be paid, at our option, in cash or common stock. These amounts reflect a $1.5 million earn-out payment made in the first quarter of 2024 in connection with our Huco acquisition, $1.1 million of which was paid in shares of common stock and $0.4 million was paid in cash. See Note 8 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Previous report — wording carried elsewhere

Revenue by segment, and as a percentage of total revenues, was as follows:

Previous report — wording carried elsewhere

Fair Value Changes in Business Acquisition Contingencies

Previous report — wording carried elsewhere

Income tax expense was $2.3 million for the year ended December 31, 2022, compared to an income tax expense of $1.7 million for the year ended December 31, 2021. The difference between our effective tax rate of 7.7% and the federal statutory rate of 21.0% is primarily attributable to items recorded for GAAP but permanently disallowed for U.S. federal income tax purposes, recognition of a U.S. federal and state valuation allowance of $30.6 million, state and foreign income tax provisions and Global Intangible Low Taxed Income.

Previous report — wording carried elsewhere

For purposes of evaluating segment profit, the Company’s chief operating decision maker reviews Segment Adjusted EBITDA as a basis for making the decisions to allocate resources and assess performance. See Note 19 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”

Previous report — wording carried elsewhere

Represents Segment Adjusted EBITDA as a percentage of revenues.

Previous report — wording carried elsewhere

Working capital increased by $14.1 million in the year ended December 31, 2022, primarily due to a decrease in accounts payable and other accrued liabilities of $9.9 million, as a result of lower contract liabilities due to the timing of project completion and the timing of vendor payments, a decrease in accrued payroll and benefits of $6.8 million, and an increase in prepaid expenses and other current assets of $1.8 million, partially offset by a decrease in accounts receivable and contract assets of $4.4 million.

Previous report — wording carried elsewhere

See Note 16 and 22 to our audited consolidated financial statements included in Item 8. “Financial Statements and Supplementary Data.”