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SHARE-BASED COMPENSATION | 9 Months Ended
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Sep. 30, 2019
SHARE-BASED COMPENSATION |
SHARE-BASED COMPENSATION | NOTE I – SHARE-BASED COMPENSATION ​ Stock Awards ​ As of December 31, 2018, the Company had outstanding restricted stock units (“RSUs”) granted under the 2005 Ownership Incentive Plan (the “2005 Plan”). On April 30, 2019, the Company’s stockholders approved the ArcBest Ownership Incentive Plan (the “Ownership Incentive Plan”) to amend and restate the 2005 Plan. The Ownership Incentive Plan provides for the granting of 4.0 million shares, which may be awarded as incentive and nonqualified stock options, stock appreciation rights, restricted stock, RSUs, or performance award units. The Company had outstanding RSUs granted under the Ownership Incentive Plan as of September 30, 2019. ​ Restricted Stock Units A summary of the Company’s restricted stock unit award program is presented below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted-Average | ​
​ |  | ​ | ​ | Grant Date | ​
​ | ​ | Units | ​ | Fair Value | ​
Outstanding – January 1, 2019 | ​ | 1,436,983 | ​ | $ | 25.81 | ​
Granted | ​ | 386,840 | ​ | $ | 27.75 | ​
Vested | ​ | (157,994) | ​ | $ | 40.15 | ​
Forfeited(1) | ​ | (19,676) | ​ | $ | 26.32 | ​
Outstanding – September 30, 2019 | ​ | 1,646,153 | ​ | $ | 24.89 | ​
​
(1) | Forfeitures are recognized as they occur.

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