AR · ANTERO RESOURCES Corp

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 6, 2025.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.57 to $39.56, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3).

Includes 172,117 shares of common stock of the Issuer subject to restricted stock units awards and 70,747 performance share units in respect of which performance has been certified, in each case that remain subject to service-based vesting.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 6, 2025.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.57 to $39.75, inclusive.

Includes 172,117 shares of common stock of the Issuer subject to restricted stock units awards and 70,747 performance share units in respect of which performance has been certified, in each case that remain subject to service-based vesting.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.75 to $39.79, inclusive.

Includes 80,814 shares of common stock of the Issuer subject to restricted stock units awards and 43,188 performance share units in respect of which performance has been certified, in each case that remain subject to service-based vesting.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.72 to $39.70, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (2).

Includes 80,814 shares of common stock of the Issuer subject to restricted stock units awards and 43,188 performance share units in respect of which performance has been certified, in each case that remain subject to service-based vesting.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 6, 2025.

In connection with the vesting and settlement of the 2023 TSR PSUs through the issuance of Common Stock pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan, the Issuer withheld Common Stock that would have otherwise been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on March 16, 2026.

Includes 77,559 shares of common stock of the Issuer ("Common Stock") subject to restricted stock units ("RSU") awards and 34,550 performance share units ("PSUs") in respect of which performance has been certified, in each case that remain subject to service-based vesting.

On March 7, 2023, the Compensation Committee (the "Compensation Committee") of Antero Resources Corp. (the "Issuer") granted performance share units (the "2023 TSR PSUs"), 25% of which vest based on the Issuer's absolute total shareholder return ("TSR") over the fourth and final performance period, which ran from March 7, 2023 through March 7, 2026 (the "Fourth Tranche"). On March 16, 2026, the Compensation Committee certified the Issuer's absolute TSR over the fourth performance period between the target and maximum performance level, resulting in the Fourth Tranche becoming earned at 101.52% of the target amount granted for that tranche and 25.38% of the total target number of 2023 TSR PSUs granted.

Includes 172,117 shares of common stock of the Issuer ("Common Stock") subject to restricted stock units ("RSU") awards and 70,747 performance share units ("PSUs") in respect of which performance has been certified, in each case that remain subject to service-based vesting.

In connection with the vesting and settlement of the 2023 TSR PSUs through the issuance of Common Stock pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan, the Issuer withheld Common Stock that would have otherwise been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on March 16, 2026.

Includes 80,814 shares of common stock of the Issuer ("Common Stock") subject to restricted stock units ("RSU") awards and 43,188 performance share units ("PSUs") in respect of which performance has been certified, in each case that remain subject to service-based vesting.

On March 7, 2023, the Compensation Committee (the "Compensation Committee") of Antero Resources Corp. (the "Issuer") granted performance share units (the "2023 TSR PSUs"), 25% of which vest based on the Issuer's absolute total shareholder return ("TSR") over the fourth and final performance period, which ran from March 7, 2023 through March 7, 2026 (the "Fourth Tranche"). On March 16, 2026, the Compensation Committee certified the Issuer's absolute TSR over the fourth performance period between the target and maximum performance level, resulting in the Fourth Tranche becoming earned at 101.52% of the target amount granted for that tranche and 25.38% of the total target number of 2023 TSR PSUs granted.

Includes 77,559 shares of common stock of the Issuer ("Common Stock") subject to restricted stock units ("RSU") awards and 34,550 performance share units ("PSUs") in respect of which performance has been certified, in each case that remain subject to service-based vesting.

On March 7, 2023, the Compensation Committee (the "Compensation Committee") of Antero Resources Corp. (the "Issuer") granted performance share units (the "2023 TSR PSUs"), 25% of which vest based on the Issuer's absolute total shareholder return ("TSR") over the fourth and final performance period, which ran from March 7, 2023 through March 7, 2026 (the "Fourth Tranche"). On March 16, 2026, the Compensation Committee certified the Issuer's absolute TSR over the fourth performance period between the target and maximum performance level, resulting in the Fourth Tranche becoming earned at 101.52% of the target amount granted for that tranche and 25.38% of the total target number of 2023 TSR PSUs granted.

In connection with the vesting and settlement of the 2023 TSR PSUs through the issuance of Common Stock pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan, the Issuer withheld Common Stock that would have otherwise been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on March 16, 2026.

Includes 172,117 shares of common stock of the Issuer ("Common Stock") subject to restricted stock units ("RSU") awards and 70,747 performance share units ("PSUs") in respect of which performance has been certified, in each case that remain subject to service-based vesting.

On March 7, 2023, the Compensation Committee (the "Compensation Committee") of Antero Resources Corp. (the "Issuer") granted performance share units (the "2023 TSR PSUs"), 25% of which vest based on the Issuer's absolute total shareholder return ("TSR") over the fourth and final performance period, which ran from March 7, 2023 through March 7, 2026 (the "Fourth Tranche"). On March 16, 2026, the Compensation Committee certified the Issuer's absolute TSR over the fourth performance period between the target and maximum performance level, resulting in the Fourth Tranche becoming earned at 101.52% of the target amount granted for that tranche and 25.38% of the total target number of 2023 TSR PSUs granted.

On March 7, 2023, the Compensation Committee (the "Compensation Committee") of Antero Resources Corp. (the "Issuer") granted performance share units (the "2023 TSR PSUs"), 25% of which vest based on the Issuer's absolute total shareholder return ("TSR") over the fourth and final performance period, which ran from March 7, 2023 through March 7, 2026 (the "Fourth Tranche"). On March 16, 2026, the Compensation Committee certified the Issuer's absolute TSR over the fourth performance period between the target and maximum performance level, resulting in the Fourth Tranche becoming earned at 101.52% of the target amount granted for that tranche and 25.38% of the total target number of 2023 TSR PSUs granted.

On March 7, 2023, the Compensation Committee (the "Compensation Committee") of Antero Resources Corp. (the "Issuer") granted performance share units (the "2023 TSR PSUs"), 25% of which vest based on the Issuer's absolute total shareholder return ("TSR") over the fourth and final performance period, which ran from March 7, 2023 through March 7, 2026 (the "Fourth Tranche"). On March 16, 2026, the Compensation Committee certified the Issuer's absolute TSR over the fourth performance period between the target and maximum performance level, resulting in the Fourth Tranche becoming earned at 101.52% of the target amount granted for that tranche and 25.38% of the total target number of 2023 TSR PSUs granted.

Includes 80,814 shares of common stock of the Issuer ("Common Stock") subject to restricted stock units ("RSU") awards and 43,188 performance share units ("PSUs") in respect of which performance has been certified, in each case that remain subject to service-based vesting.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.28 to $38.58, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (5).

Includes 50,658 shares of Common Stock subject to previously granted RSU awards that remain subject to service-based vesting.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.67 to $39.67, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (5).

Includes 80,814 shares of Common Stock subject to previously granted RSU awards and 55,828 shares of Common Stock subject to PSU's in respect of which performance has been certified, in each case, that remain subject to service-based vesting.

In connection with the vesting and settlement of RSUs through the issuance of Common Stock pursuant to the Plan, the Issuer withheld Common Stock that would otherwise have been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on March 6, 2026.

Includes 50,658 shares of Common Stock subject to previously granted RSU awards that remain subject to service-based vesting.

Each PSU represents a contingent right to receive one share of Common Stock.

Vesting of the PSUs granted on March 7, 2026 is contingent upon the achievement of a performance and service requirement. The performance component measures absolute total shareholder return over each of four performance periods: Performance Period One beginning on March 7, 2026 and ending on March 7, 2027, Performance Period Two beginning on March 7, 2027 and ending on March 7, 2028, Performance Period Three beginning on March 7, 2028 and ending on March 7, 2029, and Performance Period Four beginning on March 7, 2026 and ending on March 7, 2029. Continued service is generally required through the end of each such performance period.

The performance component for one quarter of the PSUs is determined following the completion of each respective performance period and will be settled shortly thereafter, contingent upon continued service through the end of the applicable performance period. Depending on the level of achievement of such goals, the actual number of PSUs earned could range from 0% to 200% of the target number of PSUs shown in column 5.

Reflects the grant of restricted stock units ("RSUs") pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan (the "Plan") which vest as to 1/3 of the total amount granted on each of the first three anniversaries of March 7, 2026, generally subject to continued employment through each vesting date.

Includes 81,382 shares of common stock, par value $0.01 per share ("Common Stock") of Antero Resources Corporation (the "Issuer") subject to previously granted RSU awards that remain subject to service-based vesting.

Each PSU represents a contingent right to receive one share of Common Stock.

Vesting of the PSUs granted on March 7, 2026 is contingent upon the achievement of a performance and service requirement. The performance component measures absolute total shareholder return over each of four performance periods: Performance Period One beginning on March 7, 2026 and ending on March 7, 2027, Performance Period Two beginning on March 7, 2027 and ending on March 7, 2028, Performance Period Three beginning on March 7, 2028 and ending on March 7, 2029, and Performance Period Four beginning on March 7, 2026 and ending on March 7, 2029. Continued service is generally required through the end of each such performance period.

The performance component for one quarter of the PSUs is determined following the completion of each respective performance period and will be settled shortly thereafter, contingent upon continued service through the end of the applicable performance period. Depending on the level of achievement of such goals, the actual number of PSUs earned could range from 0% to 200% of the target number of PSUs shown in column 5.

Reflects the grant of restricted stock units ("RSUs") pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan (the "Plan") which vest as to 1/3 of the total amount granted on each of the first three anniversaries of March 7, 2026, generally subject to continued employment through each vesting date.

Includes 247,610 shares of common stock, par value $0.01 per share ("Common Stock") of Antero Resources Corporation (the "Issuer") subject to previously granted RSU awards and 91,451 shares of Common Stock subject to performance share units ("PSUs") in respect of which performance has been certified, in each case, that remain subject to service-based vesting.

In connection with the vesting and settlement of RSUs through the issuance of Common Stock pursuant to the Plan, the Issuer withheld Common Stock that would otherwise have been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on March 6, 2026.

Includes 77,559 shares of Common Stock subject to previously granted RSU awards and 44,662 shares of Common Stock subject to PSU's in respect of which performance has been certified, in each case, that remain subject to service-based vesting.

In connection with the vesting and settlement of RSUs through the issuance of Common Stock pursuant to the Plan, the Issuer withheld Common Stock that would otherwise have been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on March 6, 2026.

Includes 172,117 shares of Common Stock subject to previously granted RSU awards and 91,451 shares of Common Stock subject to PSU's in respect of which performance has been certified, in each case, that remain subject to service-based vesting.

Each PSU represents a contingent right to receive one share of Common Stock.

Vesting of the PSUs granted on March 7, 2026 is contingent upon the achievement of a performance and service requirement. The performance component measures absolute total shareholder return over each of four performance periods: Performance Period One beginning on March 7, 2026 and ending on March 7, 2027, Performance Period Two beginning on March 7, 2027 and ending on March 7, 2028, Performance Period Three beginning on March 7, 2028 and ending on March 7, 2029, and Performance Period Four beginning on March 7, 2026 and ending on March 7, 2029. Continued service is generally required through the end of each such performance period.

The performance component for one quarter of the PSUs is determined following the completion of each respective performance period and will be settled shortly thereafter, contingent upon continued service through the end of the applicable performance period. Depending on the level of achievement of such goals, the actual number of PSUs earned could range from 0% to 200% of the target number of PSUs shown in column 5.

Reflects the grant of restricted stock units ("RSUs") pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan (the "Plan") which vest as to 1/3 of the total amount granted on each of the first three anniversaries of March 7, 2026, generally subject to continued employment through each vesting date.

Includes 117,018 shares of common stock, par value $0.01 per share ("Common Stock") of Antero Resources Corporation (the "Issuer") subject to previously granted RSU awards and 44,662 shares of Common Stock subject to performance share units ("PSUs") in respect of which performance has been certified, in each case, that remain subject to service-based vesting.

In connection with the vesting and settlement of RSUs through the issuance of Common Stock pursuant to the Plan, the Issuer withheld Common Stock that would otherwise have been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on March 6, 2026.

Includes 80,814 shares of Common Stock subject to previously granted RSU awards and 55,828 shares of Common Stock subject to PSU's in respect of which performance has been certified, in each case, that remain subject to service-based vesting.

Reflects the grant of restricted stock units ("RSUs") pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan (the "Plan") which vest as to 1/3 of the total amount granted on each of the first three anniversaries of March 7, 2026, generally subject to continued employment through each vesting date.

Includes 126,901 shares of common stock, par value $0.01 per share ("Common Stock") of Antero Resources Corporation (the "Issuer") subject to previously granted RSU awards and 55,828 shares of Common Stock subject to performance share units ("PSUs") in respect of which performance has been certified, in each case, that remain subject to service-based vesting.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 6, 2025.

In connection with the vesting and settlement of the PSUs originally granted on October 19, 2022; March 7, 2023; and March 7, 2025 through the issuance of Common Stock pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan, the Issuer withheld Common Stock that would have otherwise been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on February 25, 2026.

Includes 144,597 shares of Common Stock subject to previously granted RSUs and 91,451 shares of Common Stock subject to previously granted PSUs, in each case, that remain subject to service-based vesting.

In connection with the vesting and settlement of the PSUs originally granted on October 19, 2022; March 7, 2023; and March 7, 2025 through the issuance of Common Stock pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan, the Issuer withheld Common Stock that would have otherwise been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on February 25, 2026.

Includes 88,272 shares of Common Stock subject to previously granted RSUs and 55,828 shares of Common Stock subject to previously granted PSUs, in each case, that remain subject to service-based vesting.

In connection with the vesting and settlement of the PSUs originally granted on October 19, 2022; March 7, 2023; and March 7, 2025 through the issuance of Common Stock pursuant to the Amended and Restated Antero Resources Corporation 2020 Long-Term Incentive Plan, the Issuer withheld Common Stock that would have otherwise been issued to the Reporting Person to satisfy their tax withholding obligations. The number of shares of Common Stock withheld was determined based on the closing price per share of Common Stock on February 25, 2026

Includes 78,389 shares of Common Stock subject to previously granted RSUs and 44,662 shares of Common Stock subject to previously granted PSUs, in each case, that remain subject to service-based vesting.

On February 25, 2026, the Compensation Committee certified the Issuer's net debt to adjusted EBITDAX multiple over the third and final performance period, which ran from January 1, 2025 through December 31, 2025, at maximum performance levels, resulting in 33% of the PSUs originally granted on March 7, 2023 that vest based on the Issuer's net debt to adjusted EBITDAX multiple becoming earned at 200% of the target amount granted. The service-based vesting requirements applicable to the PSUs originally granted on March 7, 2023 that vest based on the Issuer's net debt to adjusted EBITDAX multiple were satisfied as of December 31, 2025.

Includes 78,389 shares of Common Stock subject to previously granted RSUs and 39,156 shares of Common Stock subject to previously granted PSUs, in each case, that remain subject to service-based vesting.

On February 25, 2026, the Compensation Committee certified the Issuer's net debt to adjusted EBITDAX multiple over the second performance period, which ran from January 1, 2025 through December 31, 2025, at maximum performance levels, resulting in 33% of the PSUs originally granted on March 7, 2024 that vest based on the Issuer's net debt to adjusted EBITDAX multiple becoming earned at 200% of the target amount granted. These PSUs remain outstanding and subject to service-based vesting requirements until December 31, 2026.

Includes 88,272 shares of Common Stock subject to previously granted RSUs and 65,226 shares of Common Stock subject to previously granted PSUs, in each case, that remain subject to service-based vesting.

On February 25, 2026, the Compensation Committee certified the Issuer's net debt to adjusted EBITDAX multiple over the third and final performance period, which ran from January 1, 2025 through December 31, 2025, at maximum performance levels, resulting in 33% of the PSUs originally granted on March 7, 2023 that vest based on the Issuer's net debt to adjusted EBITDAX multiple becoming earned at 200% of the target amount granted. The service-based vesting requirements applicable to the PSUs originally granted on March 7, 2023 that vest based on the Issuer's net debt to adjusted EBITDAX multiple were satisfied as of December 31, 2025.

Includes 144,597 shares of Common Stock subject to previously granted RSUs and 76,997 shares of Common Stock subject to previously granted PSUs, in each case, that remain subject to service-based vesting.

On February 25, 2026, the Compensation Committee certified the Issuer's net debt to adjusted EBITDAX multiple over the first performance period, which ran from January 1, 2025 through December 31, 2025, at maximum performance levels, resulting in 33% of the PSUs originally granted on March 7, 2025 that vest based on the Issuer's net debt to adjusted EBITDAX multiple becoming earned at 200% of the target amount granted. The service-based vesting requirements applicable to the aforementioned tranche of PSUs originally granted on March 7, 2025 that vest based on the Issuer's net debt to adjusted EBITDAX multiple were satisfied as of December 31, 2025.

Includes 144,597 shares of Common Stock subject to previously granted RSUs and 103,669 shares of Common Stock subject to previously granted PSUs, in each case, that remain subject to service-based vesting.

On February 25, 2026, the Compensation Committee certified the Issuer's net debt to adjusted EBITDAX multiple over the second performance period, which ran from January 1, 2025 through December 31, 2025, at maximum performance levels, resulting in 33% of the PSUs originally granted on March 7, 2024 that vest based on the Issuer's net debt to adjusted EBITDAX multiple becoming earned at 200% of the target amount granted. These PSUs remain outstanding and subject to service-based vesting requirements until December 31, 2026.

Includes 144,597 shares of Common Stock subject to previously granted RSUs and 103,669 shares of Common Stock subject to previously granted PSUs, in each case, that remain subject to service-based vesting.