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                CALCULATION OF REGISTRATION FEE
               
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                Title of Each Class of 
                 
            Securities to be Registered  | 
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                Amount to be 
                 
            Registered  | 
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                Proposed
                 
            Maximum Offering Price Per Unit  | 
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                Proposed
                 
            Maximum Aggregate Offering Price  | 
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                Amount of
                 
            Registration Fee(1)  | 
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                Common Stock, par value $0.01 per share 
               
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             |  |  |  | 31,388,193 |  |  |  |  | $ | 6.35 |  |  |  |  | $ | 199,315,025.55 |  |  |  |  | $ | 21,745.27 |  |  | 
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                Per Share 
               
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                Total 
               
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                Registered direct offering price 
               
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             |  |  | $ | 6.35 |  |  |  |  | $ | 199,315,025.55 |  |  | 
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                Proceeds to Antero, before expenses 
               
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             |  |  | $ | 6.35 |  |  |  |  | $ | 199,315,025.55 |  |  | 
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                As of September 30, 2020 
               
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                Actual 
               
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                As adjusted 
               
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                (in thousands) 
               
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                Cash and cash equivalents 
               
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             |  |  | $ | — |  |  |  |  | $ | — |  |  | 
| Indebtedness: |  |  |  |  |  |  |  |  |  |  |  |  |  | 
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                Senior secured revolving credit facility(1)(2)(3)
               
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             |  |  | $ | 827,000 |  |  |  |  | $ | 1,062,737 |  |  | 
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                5.375% senior notes due 2021(2)
               
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             |  |  |  | 315,279 |  |  |  |  |  | — |  |  | 
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                5.125% senior notes due 2022(3)
               
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             |  |  |  | 660,516 |  |  |  |  |  | 310,516 |  |  | 
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                5.625% senior notes due 2023 
               
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             |  |  |  | 579,232 |  |  |  |  |  | 579,232 |  |  | 
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                5.00% senior notes due 2025 
               
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             |  |  |  | 590,000 |  |  |  |  |  | 590,000 |  |  | 
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                8.375% senior notes due 2026 
               
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             |  |  |  | — |  |  |  |  |  | 500,000 |  |  | 
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                4.25% convertible senior notes due 2026 
               
             | 
             |  |  |  | 287,500 |  |  |  |  |  | 137,500 |  |  | 
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                Unamortized debt premium (discount), net(4)
               
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             |  |  |  | (83,658) |  |  |  |  |  | (40,014) |  |  | 
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                Unamortized debt issuance costs(5)
               
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             |  |  |  | (17,644) |  |  |  |  |  | (18,205) |  |  | 
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                Total indebtedness 
               
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             |  |  | $ | 3,158,225 |  |  |  |  | $ | 3,121,766 |  |  | 
| Equity: |  |  |  |  |  |  |  |  |  |  |  |  |  | 
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                Common stock, $0.01 par value; 1,000,000 shares authorized; 268,549 shares outstanding, actual and 299,937 shares outstanding, as adjusted 
               
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             |  |  |  | 2,685 |  |  |  |  |  | 2,999 |  |  | 
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                Preferred stock; $0.01 par value; 50,000 shares authorized; no shares 
                 
            issued and outstanding, actual and as adjusted  | 
             |  |  |  | — |  |  |  |  |  | — |  |  | 
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                Additional paid in capital(6)
               
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             |  |  |  | 6,165,750 |  |  |  |  |  | 6,243,429 |  |  | 
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                Accumulated deficit(4)(5)(7)
               
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             |  |  |  | (500,308) |  |  |  |  |  | (541,051) |  |  | 
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                Noncontrolling interests 
               
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             |  |  |  | 315,754 |  |  |  |  |  | 315,754 |  |  | 
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                Total stockholders’ equity 
               
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             |  |  |  | 5,983,881 |  |  |  |  |  | 6,021,131 |  |  | 
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                Total capitalization 
               
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             |  |  | $ | 9,142,106 |  |  |  |  | $ | 9,142,897 |  |  | 
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