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Equity-Based Compensation | 3 Months Ended
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Mar. 31, 2020
Equity-Based Compensation |
Equity-Based Compensation | (11) Equity-Based Compensation The Company’s general and administrative expenses include equity-based compensation costs related to the Antero Midstream GP LP Long-Term Incentive Plan (“AMGP LTIP”) and the Series B Units prior to the Transactions. Equity-based compensation after the Transactions include (i) costs allocated to Antero Midstream Partners by Antero Resources for grants made prior to the Transactions pursuant to Antero Resources’ long-term incentive plan, (ii) costs related to Antero Midstream Corporation LTIP (the “AM LTIP”) and (iii) the Exchanged B Units (as defined below). Antero Midstream Partners’ portion of the equity-based compensation expense is included in general and administrative expenses, and recorded as a credit to the applicable classes of equity. Equity-based compensation expense allocated to Antero Midstream Partners was $0.5 million for the period from March 13, 2019 to March 31, 2019. For the three months ended March 31, 2020, equity-based compensation allocated to Antero Midstream Partners was $1.5 million. For grants made prior to the Transactions, Antero Resources has total unamortized expense related to its various equity-based compensation plans that can be allocated to the Company of approximately $19 million as of March 31, 2020, which includes grants made under the Antero Midstream Partners Long Term Incentive Plan (the “AMP LTIP”) prior to the Transactions, which were converted into awards under the AM LTIP. A portion of this will be allocated to Antero Midstream Partners as it is amortized over the remaining service period of the related awards. Antero Midstream Partners does not reimburse Antero Resources for noncash equity compensation allocated to it for awards issued under the Antero Resources long-term incentive plan. Exchanged B Units Upon Closing of the Transactions, each Series B Unit, vested and unvested, was exchanged for 176.0041 shares of AM common stock (the “Series B Exchange”). A total of 17,353,999 shares of the Company’s common stock were issued in exchange for the 98,600 Series B Units then outstanding (the “Exchanged B Units”). The Company recognized $11 million of equity-based compensation expense related to the Series B awards for the three months ending March 31, 2019, including expenses recognized with respect to the Series B Units prior to the Closing of the Transactions and expenses recognized with respect to the Exchanged Series B Units following the closing of the Transactions through March 31, 2019. There were no forfeitures after the Series B Exchange was completed. AMGP LTIP The Company recognized expense of $0.2 million for the three months ended March 31, 2019. In connection with the Transactions, the AMGP LTIP was terminated on March 12, 2019. AM LTIP The Company is authorized to grant up to 15,398,901 shares of AM common stock to employees and directors under the AM LTIP. The AM LTIP provides for the grant of stock options, stock appreciation rights, restricted stock, restricted stock units (“RSUs”), dividend equivalents, other stock-based awards, cash awards and substitute awards. The terms and conditions of the awards granted are established by the compensation committee of the Board. As of March 31, 2020, a total of 12,681,835 shares were available for future grant under the AM LTIP. For the three months ended March 31, 2020, the Company recognized expense of $1.4 million related to these awards. Restricted Stock Unit Awards A summary of the restricted stock unit awards activity during the three months ended March 31, 2020 is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Average | ​ | Aggregate | ​
​ | ​ | Number of | ​ | grant date | ​ | intrinsic value | ​
​ |  | units |  | fair value |  | (in thousands) | ​
Total AM LTIP RSUs awarded and unvested—December 31, 2019 | ​ | 1,275,990 | ​ | $ | 14.38 | ​ | $ | 9,685 | ​
Granted | ​ | 985,269 | ​ | $ | 7.23 | ​ | ​ | ​ | ​
Vested | ​ | (10,120) | ​ | $ | 8.98 | ​ | ​ | ​ | ​
Forfeited | ​ | (21,891) | ​ | $ | 14.51 | ​ | ​ | ​ | ​
Total AM LTIP RSUs awarded and unvested—March 31, 2020 | ​ | 2,229,248 | ​ | $ | 11.22 | ​ | $ | 4,681 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ Intrinsic values are based on the closing price of the Company’s common shares on the referenced dates. At March 31, 2020, unamortized expense of $18 million related to the unvested RSUs is expected to be recognized over a weighted average period of approximately 2.3 years and the Company’s proportionate share will be allocated to it as it is recognized. Performance Share Unit Awards Based on Return on Invested Capital For the three months ended March 31, 2020, the Company recognized $78 thousand of expense related to performance share unit awards based on return of invested capital. There was no PSU activity during the three months ended March 31, 2020. As of March 31, 2020, there was $0.6 million of unamortized equity-based compensation expense related to unvested PSUs that is expected to be recognized over a weighted average period of 2.0 years. Cash Awards In January 2020, the Company granted cash awards of $2.2 million to certain executives under the AM LTIP that vest ratably over a period of up to three years. As of March 31, 2020, the Company has accrued $0.4 million in Other liabilities in the unaudited condensed consolidated balance sheet.

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