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Contingencies | 9 Months Ended
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Sep. 30, 2025
Contingencies |
Contingencies | (14) Contingencies ​ The Company is currently involved in a consolidated lawsuit with Veolia Water Technologies, Inc. (“Veolia”) relating to the Clearwater Facility. On March 13, 2020, Antero Treatment LLC (“Antero Treatment”), a wholly owned subsidiary of the Company, filed suit against Veolia in the district court of Denver County, Colorado (the “Court”), asserting claims of fraud, breach of contract and other related claims. Antero Treatment alleges that Veolia failed to meet its contractual obligations to design and build a “turnkey” wastewater disposal facility under a Design/Build Agreement dated August 18, 2015 (the “DBA”), and that Veolia fraudulently concealed certain miscalculations and design flaws during contract negotiations and continued to conceal and fraudulently misrepresent the impact of certain design changes post-execution of the DBA. On March 13, 2020, Veolia filed a separate suit against the Company, Antero Resources, and certain of the Company’s wholly owned subsidiaries (collectively, the “Antero Defendants”) in Denver County, Colorado. In its lawsuit, Veolia asserted breach of contract and equitable claims against the Antero Defendants for alleged failures under the DBA. Veolia’s suit was consolidated into the action filed by Antero Treatment. Veolia and the Antero Defendants each filed partial motions to dismiss and motions for summary judgment directed at certain claims asserted by the opposing party. A bench trial on the remaining claims was held from January 24 through February 10, 2022 and concluded on February 24, 2022. At trial, Antero Treatment sought damages from Veolia of $450 million, which represents the Company’s out-of-pocket costs associated with the Clearwater Facility project. In the alternative, Antero Treatment sought damages related to multiple breaches of the DBA, totaling $370 million. Also at trial, Veolia sought monetary damages of $118 million, including alleged delay and extra-contractual costs and a contract balance relating to an allegation that Antero Defendants improperly terminated the DBA. On January 3, 2023, the Court found that Antero Treatment had prevailed on its claims for breach of contract and fraud, and awarded $242 million in damages to Antero Treatment, plus pre- and post-judgment interest and reasonable costs and attorneys’ fees. The Court also found in Antero Defendants’ favor on all of Veolia’s affirmative claims. On January 27, 2023, the Court entered judgment in favor of Antero Treatment in the amount of $309 million in damages, which includes pre-judgment interest. On April 10, 2023, the Court issued an order identifying an error in its previously entered judgment, and on May 3, 2023, the Court entered an amended final judgment in favor of Antero Treatment in the amount of $280 million in damages, which includes pre-judgment interest through April 30, 2023. On May 26, 2023, Veolia filed a notice of appeal of the final judgment, and on June 9, 2023, Antero Treatment filed a notice of cross-appeal. Oral argument at the Colorado Court of Appeals occurred on October 15, 2024. On December 9, 2024, the District Court awarded Antero Treatment approximately $19 million in attorneys’ fees and costs. On December 19, 2024, the Colorado Court of Appeals affirmed the District Court’s May 3, 2023 judgment and associated damages award, and remanded the case to the District Court for purposes of calculating appellate attorneys’ fees and costs owed to the Company by Veolia. On January 27, 2025, Veolia filed a notice of appeal of the District Court’s December 9, 2024 award of attorneys’ fees and costs, and on March 20, 2025, Veolia filed a petition for certiorari in the Colorado Supreme Court challenging the December 19, 2024 decision of the Court of Appeals. On June 26, 2025, the Colorado Court of Appeals dismissed Veolia’s appeal of the December 9, 2024 award of attorneys’ fees and costs with prejudice, following a stipulated motion by Veolia requesting such dismissal. On September 2, 2025, the Colorado Supreme Court granted in part and denied in part Veolia’s petition for certiorari with respect to the December 19, 2024 decision by the Colorado Court of Appeals. Veolia’s opening brief is due to be filed with the Colorado Supreme Court on November 18, 2025.

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