Swaps Natural Gas MMBtu/d Weighted Average Index Price ($/MMBtu) % of Estimated Natural Gas Production (1) 4Q 2025 NYMEX Henry Hub Swap 646,087 $ 3.70 26 % 2026 NYMEX Henry Hub Swap 600,000 $ 3.82 24 % 2027 NYMEX Henry Hub Swap 100,000 $ 3.93 4 % Weighted Average Index Collars Natural Gas (MMBtu/d) Floor Price ($/MMBtu) Ceiling Price ($/MMBtu) % of Estimated Natural Gas Production (1) 2026 NYMEX Henry Hub Costless Collars 500,000 $ 3.22 $ 5.83 20 % (1) Based on the midpoint of Fourth Quarter 2025 production guidance (including BTU upgrade) 2 Fourth Quarter and Full Year 2025 Guidance Update Antero expects fourth quarter 2025 production to increase to a range of 3.5 to 3.525 Bcfe/d, with the increase reflecting the acquisitions. Full year 2025 production is now expected to be at the high end of the 3.4 to 3.45 Bcfe/d range. The company is targeting this updated range as the new maintenance production level. Antero is increasing its full year 2025 land capital budget to $125 to $150 million to reflect expanded leasing in its core liquids rich Marcellus Fairway, with the fourth quarter 2025 expected to be in the range of $25 to $50 million. Antero is also revising its full year 2025 C3+ NGL realized price premium to Mont Belvieu to $0.75 to $1.00 per barrel. This premium during the fourth quarter of 2025 is expected at a range of $1.25 to $1.75 per barrel. 4Q25 Fourth Quarter 2025 Guidance Low High Net Daily Natural Gas Equivalent Production (Bcfe/d) 3.5 3.525 C3+ NGL Realized Price Premium vs. Mont Belvieu ($/Bbl) $ 1.25 $ 1.75 Land Capital Expenditures ($MM) $ 25 $ 50 Full Year 2025 Revised Full Year 2025 Guidance Updates Low High Land Capital Budget ($MM) $ 125 $ 150 C3+ NGL Realized Price Premium vs. Mont Belvieu ($/Bbl) $ 0.75 $ 1.00 Note: Any 2025 guidance items not discussed in this release are unchanged from

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other guidance in this release

Text is the filed exhibit, verbatim.