Diamondback Energy

(4)In September 2021, our board of directors initiated our stock repurchase program. On July 31, 2025, our board of directors approved a $2.0 billion increase in our common stock repurchase program from $6.0 billion to $8.0 billion, excluding excise tax. The stock repurchase program has no time limit and may be suspended, modified, or discontinued by the board of directors at any time.

(5)The IRA, which was enacted into law on August 16, 2022, imposed a nondeductible 1% excise tax on the net value of certain stock repurchases made after December 31, 2022. All dollar amounts presented exclude such excise taxes, as applicable.

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Stock Performance Graph

The following performance graph and related information should not be deemed “soliciting material” or to be “filed” with the SEC, nor should such information be incorporated by reference into any future filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that we specifically incorporate such information by reference into such a filing. The performance graph and information are included for historical comparative purposes only and should not be considered indicative of future stock performance.

Acquisition risks include intense competition for opportunities, inherently uncertain assessments of recoverable reserves, future oil and natural gas prices and differentials, operating costs, and potential environmental or other liabilities, and reviews believed generally consistent with industry practices will not reveal all existing or potential problems, including title defects or environmental issues.

Actual 2026 capital expenditures could exceed the company's capital expenditure budget.

Additionally, costs associated with unevaluated properties are excluded from the full cost pool until we have made a determination as to the existence of proved reserves. We assess all items classified as unevaluated property (on an individual basis or as a group if properties are individually insignificant) at least annually for possible impairment. This assessment is subjective and includes consideration of the following factors, among others: (i) intent to drill, (ii) remaining lease term, (iii) geological and geophysical evaluations, (iv) drilling results and activity, (v) the assignment of proved reserves, and (vi) the economic viability of development if proved reserves are assigned. At December 31, 2025, our unevaluated properties totaled $23.9 billion, which consisted of 408,284 net undeveloped leasehold acres with approximately 10,902 net acres set to expire in 2026 if no action is taken to develop or extend. We had no significant impairment losses on our unevaluated properties during the year ended December 31, 2025, but any such future impairment could potentially be material to our consolidated financial statements.

As of July 31, 2026, the Company had outstanding consolidated derivative contracts, including contracts at Viper, based on NYMEX WTI and Brent crude pricing and NYMEX Henry Hub natural gas pricing.