Archrock Inc

1. Description of Business and Basis of Presentation

We are an energy infrastructure company with a primary focus on midstream natural gas compression. We are a premier provider of natural gas compression services, in terms of total compression fleet horsepower, to customers in the energy industry throughout the U.S., and a leading supplier of aftermarket services to customers that own compression equipment in the U.S. We operate intwo business segments: contract operations and aftermarket services. Our predominant segment, contract operations, primarily includes designing, sourcing, owning, installing, operating, servicing, repairing and maintaining our owned fleet of natural gas compression equipment to provide natural gas compression services to our customers. In our aftermarket services business, we sell parts and components and provide operations, maintenance, overhaul and reconfiguration services to customers who own compression equipment.

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and do not include all information and disclosures required by GAAP. Therefore, this information should be read in conjunction with our consolidated financial statements and notes contained in our 2023 Form 10-K. The information furnished herein reflects all adjustments that are, in the opinion of management, of a normal recurring nature and considered necessary for a fair statement of the results of the interim periods reported. All intercompany balances and transactions have been eliminated in consolidation. Operating results for the nine months ended September 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024.

2. Recent Accounting Developments

Accounting Standards Updates Not Yet Implemented

Income Tax Disclosures

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which will require significant additional disclosures, primarily focused on the disclosure of income taxes paid and the rate reconciliation table. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024, and interim periods within fiscal years beginning after December 15, 2025, and should be applied on a prospective basis, with a retrospective option. Early adoption is permitted. We are evaluating the impact that the adoption of ASU 2023-09 will have on our consolidated financial statements and related disclosures.

Segment Reporting

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which will require disclosures of significant expenses for each reportable segment, as well as certain other disclosures to help investors understand how the chief operating decision maker evaluates segment expenses and operating results. ASU 2023-07 will also allow disclosure of multiple measures of segment profitability if those measures are used to allocate resources and assess performance. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, and should be applied on a retrospective basis, unless impracticable. Early adoption is permitted. We are evaluating the impact that the adoption of ASU 2023-07 will have on our segment disclosures. We expect that the adoption of ASU 2023-07 will not have a material impact on our consolidated financial statements.

Business Combinations – Joint Venture Formations

In August 2023, the FASB issued ASU 2023-05, to reduce diversity in practice and provide decision-useful information to a joint venture’s investors by requiring that a joint venture apply a new basis of accounting upon formation. By applying a new basis of accounting, a joint venture will recognize and initially measure its assets and liabilities at fair value, with exceptions to fair value measurement that are consistent with the business combinations guidance, on the date of formation. ASU 2023-05 is effective prospectively for all joint venture formations with a formation date on or after January 1, 2025. Additionally, a joint venture that was formed before January 1, 2025, may elect to apply the amendments retrospectively if it has sufficient information to do so. Early adoption is permitted in any interim or annual period in which financial statements have not been issued or been made available for issuance, either prospectively or retrospectively. We expect that the adoption of ASU 2023-05 will have no impact on our consolidated financial statements.

3. Business Transactions

TOPS Acquisition

On August 30, 2024, we completed the TOPS Acquisition, whereby we acquired all of the issued and outstanding equity interests in TOPS, including a fleet of approximately 580,000 horsepower, including approximately 530,000 operating horsepower, for aggregate consideration consisting of $869.1 million in cash and 6,873,650 shares of common stock with an acquisition date fair value of $139.1 million. The cash portion of the purchase price was funded with proceeds from the July 2024 Equity Offering and the 2032 Notes offering and borrowings under the Credit Facility. The purchase price paid is subject to customary post-closing adjustments in accordance with the terms of the purchase and sale agreement.

The TOPS Acquisition was accounted for using the acquisition method of accounting, which requires, among other things, assets acquired and liabilities assumed to be recorded at their fair value on the acquisition date. The excess of the consideration transferred over those fair values is recorded as goodwill. The preliminary allocation of the purchase price, which is subject to certain adjustments, was based upon preliminary valuations. Our estimates and assumptions are subject to change upon the completion of management’s review of the final valuations. We are in the process of finalizing valuations related to property, plant and equipment, identifiable intangible assets and goodwill. Post-closing adjustments to the purchase price could impact future depreciation and amortization as well as income tax expense. The final valuation of net assets acquired is expected to be completed as soon as practicable, but no later than one year from the acquisition date.

The following table summarizes the preliminary purchase price allocation based on the estimated fair values of the assets acquired and liabilities assumed as of the acquisition date:

The valuation methodologies and significant inputs for fair value measurements are detailed by asset class below. The fair value measurements for property, plant and equipment and intangible assets are based on significant inputs that are not observable in the market and therefore represent Level 3 measurements.

Property, Plant and Equipment

The preliminary amount of property, plant and equipment is primarily comprised of electric motor drive compression equipment that will depreciate on a straight-line basis over an estimated average remaining useful life of 25 years. The preliminary fair value of the property, plant and equipment was determined using both the cost and market approach. Under the cost approach, we estimated the replacement cost of the assets by evaluating recent purchases of similar assets or published data, then adjusted replacement cost for physical deterioration and functional and economic obsolescence, as applicable. We then considered the market approach by comparing our estimated dollar per horsepower to market comparables and market participant assumptions and adjusted as necessary.

Other fixed assets were valued using the indirect cost method, whereby we applied asset-specific trend information using published indexes to calculate the estimated replacement cost of assets that were identified to be reflected at historical cost. Other assets were depreciated based on published normal useful life estimates and prior experience with similar assets.

Intangible Assets

The intangible assets consist of customer relationships and trade names that have estimated useful lives of 12 years andfive years, respectively. The preliminary amount of intangible assets and their associated useful life were determined based on the period over which the assets are expected to contribute directly or indirectly to our future cash flows.

The fair value of the identifiable intangible assets related to customer relationships was determined using the multi-period excess earnings method, which is a specific application of the discounted cash flow method, an income approach, whereby we estimated and then discounted the future cash flows of the intangible asset by adjusting overall business revenue for attrition, obsolescence, cost of sales, operating expenses, taxes and the required returns attributable to other contributory assets acquired. Significant estimates made in arriving at expected future cash flows included our expected customer attrition rate and the amount of earnings attributable to the assets. To discount the estimated future cash flows, we utilized a discount rate that was at a premium to our WACC to reflect the less liquid nature of the customer relationships relative to the tangible assets acquired.

It is generally accepted that the fair market value of a trade name is best measured by the relief-from-royalty method under the income approach, whereby we calculated the royalty savings by estimating a reasonable royalty rate that a third party would negotiate in a licensing agreement expressed as a percentage of total revenue involving a trade name. The revenue related to the trade name was multiplied by the selected royalty rate over the estimated expected useful life of the trade name to arrive at the royalty savings. The royalty savings were tax effected and discounted to present value using a discount rate commensurate with the risk profile of the trade name relative to our WACC and the return on the other acquired assets of TOPS.

Goodwill

The preliminary amount of goodwill resulting from the TOPS Acquisition is attributable to the expansion of our services in the Permian Basin where we currently operate and was allocated to our contract operations segment. The goodwill recorded is considered to have an indefinite life and will be reviewed annually for impairment or more frequently if indicators of potential impairment exist. All of the goodwill recorded for the TOPS Acquisition is expected to be deductible for U.S. federal income tax purposes.

Tax Contingency and Indemnification Asset

In connection with the TOPS Acquisition, we recorded a non-income tax based contingency of $4.3 million and a corresponding indemnification asset of $4.3 million based on facts existing on the date of acquisition. The tax contingency arose from pre-acquisition activities of TOPS. As part of the acquisition, the sellers agreed to indemnify us for certain tax contingencies up to $21.6 million as of the acquisition date. Dependent upon facts and circumstances, the sellers’ indemnification obligation may be reduced over a period offive years from the acquisition date but may also be extended until the resolution of claims timely submitted to the sellers.

The results of operations attributable to the TOPS Acquisition have been included in our condensed consolidated financial statements as part of our contract operations segment since the date of acquisition. Revenue attributable to the assets acquired from the acquisition date through September 30, 2024 was $15.6 million. We are unable to provide earnings attributable to the assets and liabilities acquired since the acquisition date, as we do not prepare full stand-alone earnings reports for those assets and liabilities.

Transaction-Related Costs

In connection with the TOPS Acquisition, we recorded $9.2 million and $11.0 million of transaction-related costs in our condensed consolidated statements of operations during the three and nine months ended September 30, 2024, respectively.

The following table presents transaction-related cost incurred by cost type:

Unaudited Pro Forma Financial Information

The unaudited pro forma financial information for the three and nine months ended September 30, 2024 and 2023 was derived by adjusting our historical financial statements in order to give effect to the assets and liabilities acquired in the TOPS Acquisition. The TOPS Acquisition is presented in this unaudited pro forma financial information as though the acquisition occurred as of January 1, 2023, and reflects the following:

The unaudited pro forma financial information below is presented for informational purposes only and is not necessarily indicative of our results of operations that would have occurred had the transaction been consummated at the beginning of the period presented, nor is it necessarily indicative of future results.

4. Inventory

Inventory was comprised of the following as of September 30, 2024 and December 31, 2023:

5. Property, Plant and Equipment, Net

Property, plant and equipment, net was comprised of the following as of September 30, 2024 and December 31, 2023:

6. Investments in Unconsolidated Affiliates

Investments in which we are deemed to exert significant influence, but not control, are accounted for using the equity method of accounting, except in cases where the fair value option is elected. For such investments where we have elected the fair value option, the election is irrevocable and is applied on an investment-by-investment basis at initial recognition.

In April 2022, we agreed to acquire for cash a 25% equity interest in ECOTEC, a company specializing in methane emissions detection, monitoring and management. We have elected the fair value option to account for this investment, and during the nine months ended September 30, 2023, we recognized unrealized losses of $2.0 million related to the change in fair value of our investment (see Note 15 (“Fair Value Measurements”)). Changes in the fair value of this investment are recognized inother expense, net in our condensed consolidated statements of operations. In August 2024, ECOTEC issued a pro-rata capital call to certain investors, including Archrock, which resulted in an additional investment of $1.3 million in ECOTEC. As of September 30, 2024, our ownership interest in ECOTEC was 25%, which is included in other assets in our condensed consolidated balance sheets.

For ownership interests that are not accounted for under the equity method and that do not have readily determinable fair values, we have elected the fair value measurement alternative to record these investments at cost minus impairment, if any, including adjustments for observable price changes in orderly transactions for an identical or similar investment of the same issuer. Investments in equity securities measured using the fair value measurement alternative are reviewed for impairment or observable price changes in orderly transactions each reporting period.

In November 2023, we agreed to serve as the lead investor in a series A preferred financing round for Ionada, a global carbon capture technology company committed to reducing GHG emissions and creating a sustainable future. Ionada has developed a post-combustion carbon capture solution to reduce carbon dioxide emissions from various small- to mid-sized industrial emitters in the energy, marine and e-fuels industries, among others. We have elected the fair value measurement alternative to account for this investment (see Note 15 (“Fair Value Measurements”)). Adjustments to the carrying value are recognized in other expense, net in our condensed consolidated statements of operations. As of September 30, 2024, the carrying value of our investment in Ionada was $4.3 million, which includes our initial investment of $3.8 million; and our fully diluted ownership interest in Ionada was 10%, which is included in other assets in our condensed consolidated balance sheets. Subject to certain conditions, our ownership interest will increase to 24% over the nexttwo years.

7. Long-Term Debt

Long-term debt was comprised of the following as of September 30, 2024, and December 31, 2023:

2032 Notes

On August 26, 2024, we completed a private offering of $700.0 million aggregate principal amount of 6.625% senior notes due September 2032 and received net proceeds of $690.3 million after deducting issuance costs. The $9.7 million of issuance costs were recorded as deferred financing costs within long-term debt in our condensed consolidated balance sheets and are being amortized to interest expense in our condensed consolidated statement of operations over the term of the notes. A portion of the net proceeds were used to fund a portion of the cash consideration for the TOPS Acquisition, the 2027 Notes Tender Offer and to repay borrowings outstanding under our Credit Facility.

The 2032 Notes have not been and will not be registered under the Securities Act or the securities laws of any other jurisdiction and may not be offered or sold in the U.S. except pursuant to a registration exemption under the Securities Act and applicable state securities laws. We offered and issued the 2032 Notes only to qualified institutional buyers in accordance with Rule 144A under the Securities Act and to certain non-U.S. persons outside the U.S. in accordance with Regulation S under the Securities Act.

The 2032 Notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by us, and by all of our existing subsidiaries, other than Archrock Partners Finance Corp., which is the issuer of the 2032 Notes. The 2032 Notes and the guarantees rank equally in right of payment with all of our and the guarantors’ existing and future senior indebtedness.

We may, at our option, redeem all of part of the 2032 Notes at any time on or after September 1, 2027, at specified redemption prices, plus any accrued and unpaid interest. In addition, prior to September 1, 2027, we may redeem up to 40% of the 2032 Notes at specified redemption prices and make-whole premiums, plus any accrued and unpaid interest.

2027 Notes Tender Offer

In connection with the offering of the 2032 Notes, we completed a concurrent cash tender offer of $202.0 million, which reflects approximately 101% of the aggregate principal amount of the tendered 2027 Notes and $0.2 million of agent and legal fees. On the date of tender, the net carrying value of the tendered 2027 Notes was $198.8 million and we recorded a debt extinguishment loss of $3.2 million in our condensed consolidated statements of operations.

First Amendment to the Amended and Restated Credit Agreement

On August 28, 2024, we amended our Amended and Restated Credit Agreement to, among other things:

During both the three and nine months ended September 30, 2024, we incurred $2.6 million in transaction costs related to the First Amendment to the Amended and Restated Credit Agreement, which were included in other assets in our condensed consolidated balance sheets and are being amortized over the remaining term of the Credit Facility.

Amended and Restated Credit Agreement

On May 16, 2023, we amended and restated our Credit Facility to, among other things:

During the second quarter of 2023, we incurred $6.0 million in transaction costs related to the Amended and Restated Credit Agreement, which were included in other assets in our condensed consolidated balance sheets and are being amortized over the remaining term of the Credit Facility. In addition, during the second quarter of 2023, we wrote off $1.0 million of unamortized deferred financing costs as a result of the Amended and Restated Credit Agreement, which was recorded to interest expense in our condensed consolidated statements of operations during the nine months ended September 30, 2023.

As of September 30, 2024, there were $4.1 million letters of credit outstanding under the Credit Facility and the applicable margin on borrowings outstanding was 2.1%. The weighted-average annual interest rate on the outstanding balance under the Credit Facility was 7.2% and 7.7% at September 30, 2024 and December 31, 2023, respectively. We incurred $0.6 million and $0.4 million of commitment fees on the daily unused amount of the Credit Facility during the three months ended September 30, 2024 and 2023, respectively, and $1.5 million and $1.3 million during the nine months ended September 30, 2024 and 2023, respectively.

As of September 30, 2024, we were in compliance with all covenants under our Credit Facility. Additionally, all undrawn capacity on our Credit Facility was available for borrowings as of September 30, 2024.

8. Commitments and Contingencies

Insurance Matters

Our business can be hazardous, involving unforeseen circumstances such as uncontrollable flows of natural gas or well fluids and fires or explosions. As is customary in our industry, we review our safety equipment and procedures and carry insurance against some, but not all, risks of our business. Our insurance coverage includes property damage, general liability and commercial automobile liability and other coverage we believe is appropriate. We believe that our insurance coverage is customary for the industry and adequate for our business, however; losses and liabilities not covered by insurance would increase our costs.

Additionally, we are substantially self-insured for workers’ compensation and employee group health claims in view of the relatively high per-incident deductibles we absorb under our insurance arrangements for these risks. Losses up to the deductible amounts are estimated and accrued based upon known facts, historical trends and industry averages. We are also self-insured for property damage to our offshore assets.

Tax Matters

We are subject to a number of state and local taxes that are not income-based. As many of these taxes are subject to audit by the taxing authorities, it is possible that an audit could result in additional taxes due. We accrue for such additional taxes when we determine that it is probable that we have incurred a liability and we can reasonably estimate the amount of the liability. As of September 30, 2024 and December 31, 2023, we had $8.9 million and $3.9 million, respectively, accrued for the outcomes of non-income-based tax audits. We do not expect that the ultimate resolutions of these audits will result in a material variance from the amounts accrued. We do not accrue for unasserted claims for tax audits unless we believe the assertion of a claim is probable, it is probable that it will be determined that the claim is owed and we can reasonably estimate the claim or range of the claim. We believe the likelihood is remote that the impact of potential unasserted claims from non-income-based tax audits could be material to our consolidated financial position, but it is possible that the resolution of future audits could be material to our consolidated results of operations or cash flows.

As of both September 30, 2024 and December 31, 2023, $0.6 million of the tax contingencies mentioned above related to audits that have advanced from the audit review phase to the contested hearing phase. As of September 30, 2024, $4.3 million of the tax contingencies mentioned above had an offsetting indemnification asset. None were indemnified as of December 31, 2023.

Litigation and Claims

In the ordinary course of business, we are involved in various pending or threatened legal actions. While we are unable to predict the ultimate outcome of these actions, we believe that any ultimate liability arising from any of these actions will not have a material adverse effect on our consolidated financial position, results of operations or cash flows, including our ability to pay dividends. However, because of the inherent uncertainty of litigation and arbitration proceedings, we cannot provide assurance that the resolution of any particular claim or proceeding to which we are a party will not have a material adverse effect on our consolidated financial position, results of operations or cash flows, including our ability to pay dividends.

9. Stockholders’ Equity

July 2024 Equity Offering

On July 24, 2024, Archrock sold, pursuant to a public underwriting offering,12,650,000 shares, including 1,650,000 shares pursuant to an over-allotment option. Archrock received net proceeds of $255.7 million, after deducting underwriting discounts, commissions and offering expenses. Proceeds from this equity offering were used to fund a portion of the TOPS Acquisition.

TOPS Acquisition

On August 30, 2024, we completed the TOPS Acquisition and issued 6,873,650 shares of common stock to the sellers as part of the acquisition purchase price. The acquisition date fair value was $139.1 million and is reflected in common stock and additional paid-in capital in our condensed consolidated statements of equity. See Note 3 (“Business Transactions”) for further details.

Share Repurchases

Share Repurchase Program

On April 27, 2023, our Board of Directors authorized a share repurchase program that allowed us to repurchase up to $50.0 million of outstanding common stock. Under the Share Repurchase Program, shares of our common stock may be repurchased periodically, including in the open market, privately negotiated transactions, or otherwise in accordance with applicable federal securities laws, at any time. On April 25, 2024, our Board of Directors approved an extension of the Share Repurchase Program upon expiry of the current authorization on April 27, 2024, for an additional 24-month period. Through September 30, 2024, we had repurchased 1,483,200 common shares at an average price of $14.97 per share for an aggregate of $22.2 million. In connection with the extension, the Board of Directors replenished the amount of shares authorized for repurchase under the Share Repurchase Program, resulting in available capacity of $50.0 million. The actual timing, manner, number, and value of shares repurchased under the program will be determined by us at our discretion.

Shares Withheld to Cover

The 2020 Plan and 2013 Plan allow us to withhold shares upon vesting of restricted stock at the then-current market price to cover taxes required to be withheld on the vesting date.

The following table summarizes shares repurchased:

Cash Dividends

The following table summarizes our dividends declared and paid in each of the quarterly periods of 2024 and 2023:

On October 24, 2024, our Board of Directors declared a quarterly dividend of $0.175 per share of common stock to be paid on November 13, 2024 to stockholders of record at the close of business on November 6, 2024.

10. Revenue from Contracts with Customers

The following table presents our revenue from contracts with customers by segment and disaggregated by revenue source:

(1)Primarily relates to fees associated with owned non-compression equipment.

(2)Includes$1.5 million and$1.0 million for the three months ended September 30, 2024 and 2023, respectively, and$3.8 million and$2.9 million for the nine months ended September 30, 2024 and 2023, respectively, related to billable maintenance on owned compressors that was recognized at a point in time. All other contract operations revenue is recognized over time.

(3)Services revenue within aftermarket services is recognized over time. OTC parts and components sales revenue and other revenue is recognized at a point in time.

See Note 17 (“Segment Information”) for further details.

Performance Obligations

As of September 30, 2024, we had $828.3 million of remaining performance obligations related to our contract operations segment, which will be recognized through 2029 as follows:

We do not disclose the aggregate transaction price for the remaining performance obligations for aftermarket services as there are no contracts with customers with an original contract term that is greater than one year.

Contract Assets and Liabilities

Contract Assets

As September 30, 2024 and December 31, 2023, our receivables from contracts with customers, net of allowance for credit losses, were $141.1 million and $119.7 million, respectively.

Allowance for Credit Losses

Our allowance for credit losses balance changed as follows during the nine months ended September 30, 2024:

Contract Liabilities

Freight billings to customers for the transport of compression assets, customer-specified modifications of compression assets and milestone billings on aftermarket services often result in a contract liability. As of September 30, 2024 and December 31, 2023, our contract liabilities were $7.9 million and $7.0 million, respectively.

During the nine months ended September 30, 2024, we deferred revenue of$10.6 million and recognized$9.7 million as revenue. The revenue recognized during the period primarily related to freight billings and milestone billings on aftermarket services.

11. Long-Lived and Other Asset Impairment

We review long-lived assets, including property, plant and equipment and identifiable intangibles that are being amortized, for impairment whenever events or changes in circumstances, including the removal of compressors from our active fleet, indicate that the carrying amount of an asset may not be recoverable.

Compression Fleet

We periodically review the future deployment of our idle compression assets for units that are not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. Based on these reviews, we determine that certain idle compressors should be retired from the active fleet. The retirement of these units from the active fleet triggers a review of these assets for impairment, and as a result of our review, we may record an asset impairment to reduce the book value of each unit to its estimated fair value. The fair value of each unit is estimated based on the expected net sale proceeds compared to other fleet units we recently sold, a review of other units recently offered for sale by third parties or the estimated component value of the equipment we plan to use.

In connection with our review of our idle compression assets, we evaluate for impairment idle units that were culled from our fleet in prior years and are available for sale. Based on that review, we may reduce the expected proceeds from disposition and record additional impairment to reduce the book value of each unit to its estimated fair value.

The following table presents the results of our compression fleet impairment review as recorded in our contract operations segment:

See Note 15 (“Fair Value Measurements”) for further details.

12. Restructuring Charges

During the first quarter of 2023, a plan to further streamline our organization and more fully align our teams to improve our customer service and profitability was approved by management. We didnot incur restructuring charges during the nine months ended September 30, 2024, and we donot expect to incur additional restructuring charges related to these restructuring activities.

The following table presents restructuring charges incurred by segment:

The following table presents restructuring charges incurred by cost type:

13. Income Taxes

Valuation Allowance

The amount of our deferred tax assets considered realizable could be adjusted if projections of future taxable income are reduced or objective negative evidence in the form of a three-year cumulative loss is present or both. Should we no longer have a level of sustained profitability, excluding nonrecurring charges, we will have to rely more on our future projections of taxable income to determine if we have an adequate source of taxable income for the realization of our deferred tax assets, namely net operating loss, interest expense limitation and tax credit carryforwards. This may result in the need to record a valuation allowance against all or a portion of our deferred tax assets.

Effective Tax Rate

The year-to-date effective tax rate for the nine months ended September 30, 2024 differed significantly from our statutory rate primarily due to state taxes, unrecognized tax benefits and the limitation on executive compensation offset by the benefit from equity-settled long-term incentive compensation.

Unrecognized Tax Benefits

As of September 30, 2024, we believe it is reasonably possible that $3.5 million of our unrecognized tax benefits, including penalties, interest and discontinued operations, will be reduced prior to September 30, 2025 due to the settlement of audits or the expiration of statutes of limitations or both. However, due to the uncertain and complex application of the tax regulations, it is possible that the ultimate resolution of these matters may result in liabilities that could materially differ from this estimate.

14. Earnings Per Common Share

Basic earnings per common share is computed using the two-class method, which is an earnings allocation formula that determines earnings per share for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. Under the two-class method, basic earnings per common share is determined by dividing net income, after deducting amounts allocated to participating securities, by the weighted-average number of common shares outstanding for the period. Participating securities include unvested restricted stock and stock-settled restricted stock units that have nonforfeitable rights to receive dividends or dividend equivalents, whether paid or unpaid. During periods of net loss, only distributed earnings (dividends) are allocated to participating securities, as participating securities do not have a contractual obligation to participate in our undistributed losses.

Diluted earnings per common share is computed using the weighted-average number of common shares outstanding adjusted for the incremental common stock equivalents attributed to outstanding performance-based restricted stock units and stock to be issued pursuant to our ESPP unless their effect would have been anti-dilutive.

The following table shows the calculation of net income attributable to common stockholders, which is used in the calculation of basic and diluted earnings per common share, potential shares of common stock that were included in computing diluted earnings per common share and the potential shares of common stock issuable that were excluded from computing diluted earnings per common share as their inclusion would have been anti-dilutive:

15. Fair Value Measurements

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Investment in ECOTEC

As of September 30, 2024, we owned a 25% equity interest in ECOTEC (see Note 6 (“Investments in Unconsolidated Affiliates”)). We have elected the fair value option to account for this investment. As of September 30, 2024, the fair value of our investment in ECOTEC was $16.2 million and is classified as Level 3.

The fair value determination of this investment primarily consisted of unobservable inputs, which creates uncertainty in the measurement of fair value as of the reporting date. The significant unobservable inputs used in the fair value measurement, which was valued through an average of an income approach (discounted cash flow method) and a market approach (guideline public company method), are the WACC and the revenue multiples. Significant increases (decreases) in these inputs in isolation would result in a significantly higher (lower) fair value measurement.

Additional quantitative information related to the significant unobservable inputs are as follows:

The reconciliation of changes in the fair value of our investment in ECOTEC is as follows:

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis

Investment in Ionada

As of September 30, 2024, we had a fully diluted ownership equity interest in Ionada of 10% (see Note 6 (“Investments in Unconsolidated Affiliates”)). We have elected the fair value measurement alternative to account for this investment. As of September 30, 2024, the carrying value of our investment in Ionada was $4.3 million, which includes our initial investment of $3.8 million and cumulative transaction costs of $0.5 million. There had beenno upward adjustments, impairments ordownward adjustments to the carrying value of the investment as of September 30, 2024. Subject to certain contractual conditions additional investments may be made on the same terms and conditions as the initial investment, $1.2 million in November 2024, $1.3 million in November 2025 and $4.8 million prior to July 2026, for a fully diluted ownership interest of 12%,15% and 24%, respectively.

Compressors

During the nine months ended September 30, 2024, we recorded nonrecurring fair value measurements related to our idle compressors. Our estimate of the compressors’ fair value was primarily based on the expected net sale proceeds compared with other fleet units we recently sold and/or a review of other units recently offered for sale by third parties, or the estimated component value of the equipment we plan to use. We discounted the expected proceeds, net of selling and other carrying costs, using a weighted-average disposal period offour years. These fair value measurements are classified as Level 3. The fair value of our compressors impaired as of September 30, 2024 and December 31, 2023 was as follows:

The significant unobservable inputs used to develop the above fair value measurements were weighted by the relative fair value of the compressors being measured. Additional quantitative information related to our significant unobservable inputs follows:

See Note 11 (“Long-Lived and Other Asset Impairments”) for further details.

Other Financial Instruments

The carrying amounts of our cash, accounts receivable and accounts payable approximate fair value due to the short-term nature of these instruments.

The carrying amount of borrowings outstanding under our Credit Facility approximates fair value due to the variable interest rate. The measurement of the fair value of these outstanding borrowings is a Level 3 measurement.

The fair value of our fixed rate debt is estimated using yields observable in active markets, which are Level 2 inputs, and was as follows:

(1)Carrying amounts are shown net of unamortized premium and deferred financing costs. See Note 7 (“Long-Term Debt”).

16. Related Party Transactions

ECOTEC

During both the three and nine months ended September 30, 2024, we made purchases of $0.3 million from our unconsolidated affiliate ECOTEC for use in our operations.

Hilcorp

From August 2019 to present, our Board of Directors has included a member affiliated with our customer Hilcorp or its subsidiaries or affiliates. Revenue from Hilcorp was $10.2 million and $8.9 million during the three months ended September 30, 2024 and 2023, respectively, and $30.6 million and $26.7 million during the nine months ended September 30, 2024 and 2023, respectively. Accounts receivable, net due from Hilcorp was $3.6 million and $3.8 million as of September 30, 2024 and December 31, 2023, respectively.

17. Segment Information

We manage our business segments primarily based on the type of product or service provided. We havetwo segments that we operate within the U.S.: contract operations and aftermarket services. Our contract operations segment primarily provides natural gas compression services to meet specific customer requirements. Our aftermarket services segment provides a full range of services to support the compression needs of customers, from parts sales and normal maintenance services to full operation of a customer’s owned assets.

We evaluate the performance of our segments based on adjusted gross margin, defined as revenue less cost of sales, exclusive of depreciation and amortization, for each segment. Segment revenue includes only sales to external customers.

Summarized financial information for our reporting segments is shown below:

The following table reconciles total adjusted gross margin to income before income taxes: