of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and is not incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act unless specifically identified therein as being incorporated therein by reference.

Entry Into a Material Definitive Agreement. On June 16, 2026, Antero Resources Corporation (the “Company”) established a commercial paper program (the “Program”) pursuant to which the Company may issue short-term, unsecured commercial paper notes (the “Notes”) pursuant to the exemption from registration requirements of the Securities Act of 1933, as amended (the “Securities Act”) contained in Section 4(a)(2) thereof. Notes under the Program may be issued and redeemed from time to time, with t…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information contained in

of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and is not incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act unless specifically identified therein as being incorporated therein by reference.

Regulation FD Disclosure. On February 23, 2026, Antero Resources Corporation (the “Company”) and certain of its wholly-owned subsidiaries completed the previously announced sale of substantially all of their Utica Shale oil and gas assets to an affiliate of Infinity Natural Resources, Inc. and Northern Oil and Gas, Inc. (“NOG”) for aggregate cash consideration of $800 million, subject to customary post-closing adjustments, adjustments for the effective date of the transaction and other items,…

Results of Operations and Financial Condition On February 11, 2026, Antero Resources Corporation issued a press release, a copy of which is attached hereto as Exhibit 99.1 and incorporated by reference herein, announcing its financial and operational results for the quarter and year ended December 31, 2025. The information in this Current Report, including Exhibit 99.1, is being furnished pursuant to

shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended or the Exchange Act, regardless of any general incorporation language in such filing, except as shall be expressly set forth by specific reference in such filing. Forward-Looking Statements…

Entry Into a Material Definitive Agreement The information contained in

(d) Exhibits. Exhibit Number Description 4.1* Credit Agreement, by and among Antero Resources Corporation, as Borrower, the Lenders party thereto and Royal Bank of Canada, as Administrative Agent, dated February 3, 2026. 10.1* Membership Interest Purchase Agreement, by and among HG Energy II LLC, HG Energy II Production Holdings, LLC, HG Energy II Midstream Holdings, LLC, Antero Resources Corporation and Antero Midstream Partners LP, dated as of December 5, 2025 (incorporated by reference to…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. Term Loan A Facility On February 3, 2026, the Company entered into a credit agreement (the “Term Loan A Facility”), by and among the Company, as borrower, Royal Bank of Canada, as administrative agent and the other lenders party thereto (collectively, the “Lenders”). Borrowings under the Term Loan A Facility are unsecured and not guaranteed by any of the Company’s subsidiaries. O…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information contained in

Entry into a Material Definitive Agreement. On January 28, 2026, Antero Resources Corporation (the “Company”) completed its previously announced underwritten public offering (the “Offering”) of $750,000,000 aggregate principal amount of its 5.400% Senior Notes due 2036 (the “Notes”). The Offering of the Notes was registered under the Securities Act of 1933 pursuant to an automatic shelf registration statement on Form S-3 (Registration No. 333-292670) of the Company, filed with the U.S. Securi…

Other Events. On January 13, 2026, the Company entered into an underwriting agreement (the “Underwriting Agreement”) with RBC Capital Markets, LLC, J.P. Morgan Securities LLC, Wells Fargo Securities, LLC, Truist Securities, Inc. and PNC Capital Markets LLC as representatives of the several underwriters named therein (collectively, the “Underwriters”), relating to the issuance and sale to the Underwriters (the “Offering”) of $750 million aggregate principal amount of 5.400% Senior Notes due 20…

shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, regardless of any general incorporation language in such filing, except as shall be expressly set forth by specific reference in such filing. 4 Forward-Looking Statements This Form 8-K contains forward-looking…

Entry Into a Material Definitive Agreement HG Acquisition On December 5, 2025, Antero Resources Corporation (the “Company”) entered into a Membership Interest Purchase Agreement (the “Purchase Agreement”) to purchase 100% of the issued and outstanding equity interests of HG Energy II Production Holdings, LLC (“HG Production”) from HG Energy II LLC (“HG Energy”) for cash consideration of $2.8 billion (the “Antero Resources HG Acquisition”), subject to the terms and conditions thereof. HG Produ…

of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and is not incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act unless specifically identified therein as being incorporated therein by reference.

CEO — Michael N. Kennedy: The filing primarily discloses compensation adjustments and the adoption of a severance plan resulting from previously disclosed management changes, rather than reporting a new departure or appointment event.

CEO — Paul M. Rady: The CEO is transitioning to Chairman Emeritus for personal reasons with a named internal successor (CFO Michael Kennedy) already in place, indicating an orderly succession rather than a sudden loss of leadership.

of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and is not incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act unless specifically identified therein as being incorporated therein by reference.

of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and is not incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act unless specifically identified therein as being incorporated therein by reference.

Results of Operations and Financial Condition On February 12, 2025, Antero Resources Corporation issued a press release, a copy of which is attached hereto as Exhibit 99.1 and incorporated by reference herein, announcing its financial and operational results for the quarter and year ended December 31, 2024. The information in this Current Report, including Exhibit 99.1, is being furnished pursuant to

of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and is not incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act unless specifically identified therein as being incorporated therein by reference.

of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and is not incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act unless specifically identified therein as being incorporated therein by reference.

The filing describes an amendment to a long-term incentive plan to increase share availability, which is a compensatory arrangement rather than a change in management personnel.

of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and is not incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act unless specifically identified therein as being incorporated therein by reference.