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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2025

Fair value

Schedule of changes in assets measured at fair value on a recurring basis

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​	​	​	​	​	​	​
(in thousands)	​	2025		​	2024
Balance at beginning of period	​	$	14,671	​	$	14,905
Purchases of equity interests	​	​	—	​	​	1,250
Unrealized loss (1)	​	​	(25)	​	​	(1,484)
Balance at end of period	​	​	14,646	​	​	14,671

(1) Included in other expense, net in our consolidated statement of operations.

Schedule of carrying value and estimated fair value of debt instruments

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​	​	​	​	​	​	​
​	​	December 31,
(in thousands)	​	2025		​	2024
Carrying amount of fixed rate debt (1)	​	$	1,500,000	​	$	1,800,000
Fair value of fixed rate debt	​		1,527,000	​		1,796,000

(1) Carrying amounts exclude unamortized debt premium and deferred financing costs. See Note 15 (“Long-Term Debt”) for further details.

Compressors

Fair value

Schedule of non-recurring fair value assets

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(in thousands)	​	2025		​	2024
Impaired compression fleet	​	$	871	​	$	1,048

Schedule of significant unobservable inputs

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​	​	​	​	​
​	​ ​ ​	Range	​ ​ ​ ​ ​ ​	​ ​Weighted Average (1)
Estimated net sale proceeds:	​	​	​	​
As of December 31, 2025	​	$0 - $241 per horsepower	​	$54 per horsepower
As of December 31, 2024	​	$0 - $188 per horsepower	​	$46 per horsepower

(1) Calculated based on an estimated discount for market liquidity of 19% and 25% as of December 31, 2025 and 2024, respectively.

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ECOTEC | Equity investment

Fair value

Schedule of significant unobservable inputs

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Significant

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Year Ended

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Year Ended

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Unobservable

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December 31, 2025

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December 31, 2024

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Inputs

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Range

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Median

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Range

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Median

Valuation technique:

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Discounted cash flow

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WACC

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0.0% - 17.8%

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11.1%

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0.0% - 17.0%

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12.9%

Guideline public company

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Revenue multiple

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1.6x - 7.6x

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5.3x

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1.6x - 7.3x

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4.3x

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Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3).

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Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements.

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