Kinetik Holdings Inc.

Off-Balance Sheet Arrangements

As of December 31, 2025, there were no off-balance sheet arrangements.

Critical Accounting Policies and Estimates

Our significant accounting policies are described in Part IV, Item 15. Exhibits, Financial Statement Schedules, Note 2—Summary of Significant Accounting Policies of this Annual Report.

The Company prepares its financial statements and the accompanying notes in conformity with U.S. GAAP, which require management to make estimates and assumptions about future events that affect the reported amounts in the financial statements and the accompanying notes. We consider our critical accounting estimates to be those that require difficult, complex, or subjective judgment necessary in accounting for inherently uncertain matters and those that could significantly influence our financial results based on changes in those judgments. Critical accounting estimates cover accounting matters that are inherently uncertain because the future resolution of such matters is unknown. Management routinely discusses the development, selection, and disclosure of the following critical accounting estimates.

Business Combinations

For acquired businesses, we recognize the identifiable assets acquired, the liabilities assumed and any noncontrolling interest in the acquiree at their estimated fair values on the date of acquisition with any excess purchase price over the fair value of net assets acquired recorded to goodwill. Determining the fair value of these items requires management’s judgment and/or the utilization of independent valuation specialists and involves the use of significant estimates and assumptions. The judgments made in the determination of the estimated fair value assigned to the assets acquired, the liabilities assumed and any noncontrolling interest in the investee, as well as the estimated useful life of each asset and the duration of each liability, can materially impact the financial statements in periods after acquisition, such as through depreciation and amortization expense. See Note 3—Business Combinations in our Notes to the Consolidated Financial Statements in this Annual Report for more information regarding our valuation approach.

Impairment of Long-lived Assets

Long-lived assets used in operations are evaluated for potential impairment when events or changes in circumstances indicate a possible significant deterioration in future cash flows expected to be generated by an asset group. Individual assets are grouped for impairment purposes based on a judgmental assessment of the lowest level for which there are identifiable cash flows that are largely independent of the cash flows of other groups of assets. If there is an indication that the carrying amount of an asset may not be recovered, the asset is assessed for impairment through an established process in which changes to significant assumptions such as service prices, throughput volumes, future development plans and fluctuation of commodity prices are reviewed. If, upon review, the sum of the undiscounted pre-tax cash flows is less than the carrying value of the asset group, the carrying value is written down to an estimated fair value. Such fair value is generally determined by discounting anticipated future net cash flows, an income valuation approach, or by a market-based valuation approach, which are Level 3 fair value measurements. Estimates and assumptions can be affected by a variety of factors, including external factors such as industry and economic trends, and internal factors such as changes in our business strategy and our internal forecasts. An estimate of the sensitivity to changes in underlying assumptions of a fair value calculation is not practicable, given the numerous assumptions that can materially affect our estimates.

Equity Method Investments

We evaluate our EMIs for impairment when events or circumstances indicate that the carrying value of the EMI may be impaired and that impairment is other than temporary. If an event occurs, we evaluate the recoverability of our carrying value based on the fair value of the investment. If an impairment is indicated, we adjust the carrying values of the investment downward, if necessary, to their estimated fair values.

We estimate the fair value of our EMIs based on a number of factors, including discount rates, projected cash flows, and enterprise value. Estimating projected cash flows requires us to make certain assumptions as it relates to the future operating performance of each of our EMIs (which includes assumptions, among others, about estimating future operating margins and related future growth in those margins, contracting efforts and the cost and timing of facility expansions) and assumptions related to our EMIs, such as their future capital and operating plans and their financial condition.

Derivative Instruments and Hedging Activities

All our derivative contracts are recorded at estimated fair value. We utilize published prices, broker quotes, and estimates of market prices to estimate the fair value of these contracts; however, actual amounts could vary materially from estimated fair values as a result of changes in market prices. In addition, changes in the methods used to determine the fair value of these contracts could have a material effect on our results of operations. We do not anticipate future changes in the methods used to determine the fair value of these derivative contracts.

Income Taxes

We make significant judgments and estimates in determining our provision for income taxes, including our assessment of our income tax positions, interpretation and application of complex tax laws and regulations and determining a valuation allowance, if necessary. In particular, there are numerous and complex judgments and assumptions inherent in determining a valuation allowance, including factors such as future operating conditions and profitability. For more information, see Note 15—Income Taxes in our Notes to the Consolidated Financial Statements in this Annual Report.

Legal and Regulatory Matters

The Company is a party to various legal actions arising in the ordinary course of its business. In accordance with FASB ASC 450, Contingencies, the Company accrues reserves for outstanding lawsuits, claims and proceedings when a loss contingency is probable and can be reasonably estimated. The Company expenses legal costs as incurred and estimates the amount of loss contingencies using current available information from legal proceedings, advice from legal counsel and other relevant external experts. Due to the inherent subjectivity of the assessments and unpredictability of the outcomes of any legal proceedings, any amounts estimated or accrued may not represent the ultimate loss to the Company from the legal proceedings in question. To the extent that actual outcomes differ from our estimates, or additional facts and circumstances cause us to

revise our estimates, our earnings will be affected.

The Company and certain of its affiliates are currently defending against certain lawsuits and have accrued immaterial reserves as of December 31, 2025. See Note 17—Commitments and Contingencies in our Notes to the Consolidated Financial Statements in this Annual Report for more information.

Environmental Matters

With respect to our environmental exposure, we utilize both internal staff and external experts to assist us in identifying environmental issues and in estimating the costs and timing of remediation efforts. Our accrual of environmental liabilities often coincides either with our completion of a feasibility study or our commitment to a formal plan of action, but generally, we recognize and/or adjust our probable environmental liabilities, if necessary or appropriate, following quarterly reviews of potential environmental issues and claims that could impact our assets or operations. In recording and adjusting environmental liabilities, we consider the effect of environmental compliance, pending legal actions against us, and potential third-party liability claims. The estimated environmental matter-related liability was $14.0 million and $24.0 million as of December 31, 2025 and 2024, respectively. See Note 17—Commitments and Contingencies in our Notes to the Consolidated Financial Statements in this Annual Report for more information on environmental matters.