Securities and Exchange Commission

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

Compare To Other Companies

Annual (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.35	2017-03-03	10-K	2016	FY	2014-01-01	2014-12-31	CY2014
0.45	2018-03-01	10-K	2017	FY	2015-01-01	2015-12-31	CY2015
0.45	2019-02-28	10-K	2018	FY	2016-01-01	2016-12-31	CY2016
0.428	2020-03-02	10-K	2019	FY	2017-01-01	2017-12-31	CY2017
0.389	2021-02-26	10-K	2020	FY	2018-01-01	2018-12-31	CY2018
0.516	2021-02-26	10-K	2020	FY	2019-01-01	2019-12-31	CY2019

All Reported Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.35	2016-02-29	10-K	2015	FY	2014-01-01	2014-12-31
0.35	2017-03-03	10-K	2016	FY	2014-01-01	2014-12-31	CY2014
0.45	2016-02-29	10-K	2015	FY	2015-01-01	2015-12-31
0.45	2017-03-03	10-K	2016	FY	2015-01-01	2015-12-31
0.45	2018-03-01	10-K	2017	FY	2015-01-01	2015-12-31	CY2015
0.45	2017-03-03	10-K	2016	FY	2016-01-01	2016-12-31
0.45	2018-03-01	10-K	2017	FY	2016-01-01	2016-12-31
0.45	2019-02-28	10-K	2018	FY	2016-01-01	2016-12-31	CY2016
0.428	2018-03-01	10-K	2017	FY	2017-01-01	2017-12-31
0.428	2019-02-28	10-K	2018	FY	2017-01-01	2017-12-31
0.428	2020-03-02	10-K	2019	FY	2017-01-01	2017-12-31	CY2017
0.389	2019-02-28	10-K	2018	FY	2018-01-01	2018-12-31
0.389	2020-03-02	10-K	2019	FY	2018-01-01	2018-12-31
0.389	2021-02-26	10-K	2020	FY	2018-01-01	2018-12-31	CY2018
0.516	2020-03-02	10-K	2019	FY	2019-01-01	2019-12-31
0.516	2021-02-26	10-K	2020	FY	2019-01-01	2019-12-31	CY2019