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Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2015

Stock Options Plan [Member]

Assumptions Used to Determine Grant-Date Fair Value of Options

The following weighted average assumptions were used to determine the grant-date fair value of options:

		2015				2014				2013
Dividend yield			1.03	%			1.34	%			0.11	%
Expected life			5 years				5 years				5 years
Volatility			25.5	%			30.7	%			41.1	%
Risk free interest rate			1.05	%			0.97	%			0.46	%

Summary of Transactions of Company's Stock Option Plans

The following table summarizes the transactions of the Company’s stock option plans for the year ended December 31, 2015:

		Number of Options				Weighted Average Exercise Price				Weighted Average Grant-Date Fair Value
Outstanding at December 31, 2014			728,640			$	19.55			$	16.17
Granted – at discount			98,217			$	0.00			$	41.55
– at market value			23,550			$	43.95			$	9.89
Exercised			(152,378	)		$	6.80			$	14.43
Forfeited			(30,590	)		$	30.11			$	12.11
Outstanding at December 31, 2015			667,439			$	19.87			$	20.19

Stock Equivalent Units [Member]

Assumptions Used to Determine Fair Value of SEUs

The following assumptions were used to determine the fair value of SEUs at the balance sheet dates:

		2015				2014				2013
Dividend yield			1.12	%			1.29	%			1.08	%
Volatility			24.6	%			26.0	%			37.6	%
Risk free interest rate			1.31	%			1.10	%			0.78	%

Summarizes Transactions of SEUs

The following table summarizes the transactions of the Company’s SEUs for the year ended December 31, 2015:

		Number of SEUs				Weighted Average Exercise Price				Weighted Average Grant-Date Fair Value
Outstanding at December 31, 2014			286,563			$	3.41			$	27.10
Granted – at discount			91,280			$	0.00			$	40.20
– at market value			7,552			$	43.95			$	9.89
Exercised			(104,140	)		$	1.97			$	24.90
Forfeited			(1,505	)		$	29.56			$	29.56
Outstanding at December 31, 2015			279,750			$	3.79			$	31.72

Additional Exceptional Long-Term Incentive Plan [Member]

Fair Value of Liability Cash-Settled Long-Term Incentives

The fair value is calculated using a Monte Carlo model and is summarized as follows:

(in millions)		2015				2014
Balance at January 1		$	0.1			$	0.0
Compensation charge for the period			0.9				0.1
Balance at December 31		$	1.0			$	0.1

Assumptions Used in the Monte Carlo Model

The following assumptions were used in the Monte Carlo model at December 31:

		2015				2014
Dividend yield			1.12	%			1.29	%
Volatility of Innospec’s share price			24.6	%			26.0	%
Risk free interest rate			1.31	%			1.10	%

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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