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Share Plans
6 Months Ended
Jun. 27, 2021
Share-based Payment Arrangement [Abstract]  
Share Plans Share Plans
Total share-based compensation expense for the quarters ended June 27, 2021, and June 28, 2020, was as follows:
Second QuarterYear-to-date
In millions2021202020212020
Total share-based compensation charges$0.9 $0.8 $1.4 $1.3 
In March 2021, we issued our annual share-based compensation grants under the Luxfer Holdings PLC Long-Term Umbrella Incentive Plan. The total number of awards issued was approximately 110,000 and the weighted average fair value of options granted in 2021 was estimated to be $21.14 per share.
Also in March 2021, approximately 45,000 awards were granted based on the achievement of total shareholder return targets from the period January 1, 2018 to December 31, 2020. The awards vested immediately upon grant.
In June 2021, we issued our annual share-based compensation grants under the Luxfer Holdings PLC Non-Executive Directors' Equity Incentive Plan. The total number of awards issued was 19,184 and the weighted-average fair value of options granted was estimated to be $21.69 per share.
The following table illustrates the assumptions used in deriving the fair value of share options granted during 2021 and the year-ended December 31, 2020:
20212020
Dividend yield (%)
3.39 - 4.09
3.39 - 4.09
Expected volatility range (%)
36.48 - 56.28
36.48 - 56.28
Risk-free interest rate (%)
0.18 - 0.49
0.18 - 0.49
Expected life of share options range (years)
0.50 - 4.00
0.50 - 4.00
Forfeiture rate5.00 5.00 
Weighted average exercise price ($)$1.00$1.00
Model usedBlack-Scholes & Monte-CarloBlack-Scholes & Monte-Carlo
The expected life of the share options is based on historical data and current expectations, and is not necessarily indicative of exercise patterns that may occur. The expected volatility reflects the assumption that the historical volatility over a period similar to the life of the options is indicative of future trends, which may not necessarily be the actual outcome.