Common Stock and Treasury Stock

12 Months Ended

Dec. 31, 2020

In 2005, the board approved a stock repurchase program authorizing the Company, as market and business conditions warrant, to acquire its common stock and periodically authorize additional funds for the program. In February 2018, the board approved the repurchase of the Company's common stock of up to $200.0 million, in place of the remaining purchase amounts previously authorized.

The Company repurchased 1,000,000 shares for $28.9 million under the program for the year ended December 31, 2020. Under the program to date, the Company has repurchased 46,357,495 shares for approximately $612.3 million. As of December 31, 2020, the maximum remaining amount authorized for purchase under the stock repurchase program was $112.1 million.

During the year ended September 30, 2006, the Company began to issue shares of treasury stock upon exercise of stock options, payment of earned performance shares (LTIP performance shares and TSRs), vesting of RSUs, and for issuances of common stock pursuant to the Company’s ESPP. Treasury shares issued by award type are as follows:


	Years Ended December 31,
	2020	2019	2018
Stock options	1,756,471	854,524	1,379,704
LTIP performance shares	668,240	—	—
TSRs	199,413	—	—
RSUs	431,504	259,634	10,000
ESPP	151,542	126,983	148,520
Total treasury shares issued	3,207,170	1,241,141	1,538,224