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STOCK-BASED COMPENSATION (Tables) | 6 Months Ended
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Jun. 30, 2020
STOCK-BASED COMPENSATION |
Summary of option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Stock Awards Plans | ​ | Director Stock Option Plans |
​ |  | ​ | ​ |  | Weighted Average |  | ​ |  | Weighted Average |
​ | ​ | ​ | Options | ​ | Exercise Price | ​ | Options | ​ | Exercise Price |
Outstanding, January 1, 2020 |  | ​ | 5,044,180 | ​ | $ | 68.32 |  | 135,251 | ​ | $ | 58.45 | ​
Granted |  | ​ | — | ​ |  | — |  | — | ​ |  | — | ​
Exercised |  | ​ | (460,243) | ​ |  | 58.21 |  | (30,751) | ​ |  | 51.22 | ​
Forfeited or expired |  | ​ | (14,200) | ​ |  | 76.07 |  | — | ​ |  | — | ​
Outstanding at June 30, 2020 |  | ​ | 4,569,737 | ​ | $ | 69.38 |  | 104,500 | ​ | $ | 60.58 | ​
Exercisable at June 30, 2020 |  | ​ | 4,416,415 | ​ | $ | 68.62 |  | 104,500 | ​ | $ | 60.58 | ​
Weighted-Average Remaining Contractual Term (Years): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2020 |  | ​ | 5.0 | ​ | ​ | ​ | ​ | 3.1 | ​ |  | ​ | ​
Exercisable at June 30, 2020 |  | ​ | 4.9 | ​ | ​ | ​ | ​ | 3.1 | ​ |  | ​ | ​
Aggregate Intrinsic Value: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Outstanding at June 30, 2020 | ​ | $ | 194,684 | ​ | ​ | ​ | $ | 4,902 | ​ | ​ | ​ | ​
Exercisable at June 30, 2020 | ​ | $ | 190,936 | ​ | ​ | ​ | $ | 4,902 | ​ | ​ | ​ | ​
Intrinsic Value of Options Exercised During the Six Months Ended: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
June 30, 2020 | ​ | $ | 26,027 | ​ | ​ | ​ | $ | 1,973 | ​ | ​ | ​ | ​
June 30, 2019 | ​ | $ | 65,944 | ​ | ​ | ​ | $ | 722 | ​ | ​ | ​ | ​
Weighted-average assumptions used to estimate fair value of restricted stock units | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Six Months Ended June 30, | ​ | ​ | 2020 | ​ | ​ | ​ | 2019 | ​ |
Fair value per stock award | ​ | $ | 94.98 | ​ | ​ | $ | 134.97 | ​ | ​
Grant date stock price | ​ | $ | 83.93 | ​ | ​ | $ | 104.51 | ​ | ​
Assumptions: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Aptar's stock price expected volatility | ​ | ​ | 23.80 | % | ​ | ​ | 16.50 | % | ​
Expected average volatility of peer companies | ​ | ​ | 48.50 | % | ​ | ​ | 31.90 | % | ​
Correlation assumption | ​ | ​ | 63.50 | % | ​ | ​ | 37.40 | % | ​
Risk-free interest rate | ​ | ​ | 0.31 | % | ​ | ​ | 2.19 | % | ​
Dividend yield assumption | ​ | ​ | 1.72 | % | ​ | ​ | 1.30 | % | ​
Summary of restricted stock unit activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Time-Based RSUs | ​ | Performance-Based RSUs |
​ |  |  |  | Weighted Average |  | ​ |  | Weighted Average | ​
​ | ​ | Units | ​ | Grant-Date Fair Value | ​ | Units | ​ | Grant-Date Fair Value | ​
Nonvested at January 1, 2020 | ​ | 480,729 | ​ | $ | 95.45 | ​ | 181,680 | ​ | $ | 117.26 | ​
Granted | ​ | 229,033 | ​ |  | 85.57 | ​ | 417,313 | ​ |  | 93.08 | ​
Vested | ​ | (125,020) | ​ | ​ | 85.55 | ​ | — | ​ | ​ | — | ​
Forfeited | ​ | (5,692) | ​ |  | 99.08 | ​ | (6,714) | ​ |  | 108.10 | ​
Nonvested at June 30, 2020 | ​ | 579,050 | ​ | $ | 92.14 | ​ | 592,279 | ​ | $ | 100.29 | ​

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of restricted stock units, including, but not limited to: (a) expected term of restricted stock units and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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