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STOCK-BASED COMPENSATION (Tables) | 3 Months Ended
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Mar. 31, 2018
STOCK-BASED COMPENSATION |
Weighted-average assumptions used to estimate fair value of stock options granted |
Stock Awards Plans: |  |  |  |  |
Three Months Ended March 31, |  | 2018 |  | 2017 |
Dividend Yield |  | 1.5 | % | 1.7 | %
Expected Stock Price Volatility |  | 14.2 | % | 15.8 | %
Risk-free Interest Rate |  | 2.8 | % | 2.2 | %
Expected Life of Option (years) |  | 6.6 |  | 6.7 |
Summary of option activity |
|  | Stock Awards Plans |  | Director Stock Option Plans |
|  |  |  |  | Weighted Average |  |  |  | Weighted Average |
|  |  | Options |  | Exercise Price |  | Options |  | Exercise Price |
Outstanding, January 1, 2018 |  |  | 8,059,319 |  | $ | 61.67 |  | 214,967 |  | $ | 57.44 |
Granted |  |  | 603,901 |  |  | 88.39 |  | — |  |  | — |
Exercised |  |  | (613,913) |  |  | 52.73 |  | (44,000) |  |  | 53.35 |
Forfeited or expired |  |  | (26,738) |  |  | 63.13 |  | — |  |  | — |
Outstanding at March 31, 2018 |  |  | 8,022,569 |  | $ | 64.36 |  | 170,967 |  | $ | 58.49 |
Exercisable at March 31, 2018 |  |  | 5,935,087 |  | $ | 59.55 |  | 170,967 |  | $ | 58.49 |
Weighted-Average Remaining Contractual Term (Years): |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2018 |  |  | 6.4 |  |  |  |  | 4.9 |  |  |  |
Exercisable at March 31, 2018 |  |  | 5.5 |  |  |  |  | 4.9 |  |  |  |
Aggregate Intrinsic Value: |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2018 |  | $ | 204,336 |  |  |  | $ | 5,358 |  |  |  |
Exercisable at March 31, 2018 |  | $ | 179,720 |  |  |  | $ | 5,358 |  |  |  |
Intrinsic Value of Options Exercised During the Three Months Ended: |  |  |  |  |  |  |  |  |  |  |  |
March 31, 2018 |  | $ | 22,804 |  |  |  | $ | 1,608 |  |  |  |
March 31, 2017 |  | $ | 15,289 |  |  |  | $ | — |  |  |  |
Weighted-average assumptions used to estimate fair value of restricted stock units |
Three Months Ended March 31, |  |  | 2018 |
Fair value per stock award |  | $ | 128.70 |
Grant date stock price |  | $ | 89.42 |
Assumptions: |  |  |  |
Aptar's stock price expected volatility |  |  | 12.30 | %
Expected average volatility of peer companies |  |  | 27.50 | %
Correlation assumption |  |  | 20.20 | %
Risk-free interest rate |  |  | 2.42 | %
Dividend yield assumption |  |  | 1.43 | %
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, 2018 |  | 124,067 |  | $ | 74.65 |  | — |  | $ | — |
Granted |  | 80,067 |  |  | 89.42 |  | 80,843 |  |  | 111.55 |
Vested |  | (14,281) |  |  | 71.72 |  | — |  |  | — |
Nonvested at March 31, 2018 |  | 189,853 |  | $ | 81.10 |  | 80,843 |  | $ | 111.55 |
Included in the March 31, 2018 time-based RSUs are 14,793 units awarded to non-employee directors. There were no grants or vesting activity for non-employee director awards.

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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