ISSUER REPURCHASES OF EQUITY SECURITIES Our share repurchase program may be effected from time to time, depending on market conditions and other factors, through open market purchases and privately negotiated transactions. On each of November 11, 2021 and February 4, 2022, our Board of Directors approved a renewal of our authorized share repurchase program to an aggregate amount of up to $500.0 million. Unless terminated earlier by our Board of Directors, the program will expire when we have repurchased the full value of the shares authorized. The table below details the repurchases that were made under the program during the fourth quarter of 2021, and also includes other shares purchased, which represents common shares surrendered by employees in respect of withholding tax obligations on the vesting of restricted stock. Total Shares Purchased Other Shares Purchased Shares Purchased Under Repurchase Program Dollar Amount Still Available Under Repurchase Program Shares Purchased Average Price per Share Shares Purchased Average Price per Share Shares Purchased Average Price per Share (in millions) Beginning dollar amount available to be repurchased $ 421.8 October 1 - 31, 2021 684,654 $ 146.52 145 $ 141.80 684,509 $ 146.52 321.5 November 1 - 10, 2021 216,275 $ 153.52 — $ — 216,275 $ 153.52 288.3 November 11 - renewal of authorized share repurchase program of $500.0 million 500.0 November 11 - 30, 2021 311,066 $ 160.80 87 $ 152.55 310,979 $ 160.80 450.0 December 1 - 31, 2021 876,867 $ 165.99 12,945 $ 169.33 863,922 $ 165.94 306.6 Total 2,088,862 $ 157.54 13,177 $ 168.92 2,075,685 $ 157.47 $ 306.6 During 2021, pursuant to our publicly announced share repurchase program, we repurchased 6.6 million common shares at an aggregate cost of $1.0 billion and an average price of $156.78 per common share. At December 31, 2021, $306.6 million remained available for repurchase under the share repurchase program. Subsequent to December 31, 2021 and through the period ended February 2, 2022, we repurchased 462 thousand common shares at an aggregate cost of $76.1 million and an average price of $164.52 per common share. In the future, we may authorize additional purchase activities under the currently authorized share repurchase program, increase the amount authorized under the share repurchase program, or adopt additional trading plans. Our decision to repurchase common shares will depend on, among other matters, the market price of the common shares and our capital requirements. ITEM 6. [Reserved] 53