Stockholders' Equity - (Tables)

9 Months Ended

Sep. 30, 2020

The following table presents a rollforward of our common stock for the three and nine months ended September 30, 2020 and 2019:


	Three Months Ended September 30,			Nine Months Ended September 30,
	2020	2019		2020	2019
Shares issued and outstanding, beginning balance	67,292,864	69,991,145	69,065,491	70,596,559
Issuance of common stock from vested restricted stock units ¹	158,041	198,478	500,291	699,188
Issuance of common stock from exercise of stock options	25,075	23,441	65,684	163,214
Issuance of common stock for employee stock purchase plan	—	—	130,532	112,623
Repurchase of common stock	(521,137)	(307,046)	(2,688,538)	(1,482,655)
Awards effectively repurchased for required employee withholding taxes	(56,859)	(71,765)	(175,476)	(254,676)
Shares issued and outstanding, ending balance	66,897,984	69,834,253	66,897,984	69,834,253

⁽¹⁾ Net of shares of common stock underlying cancelled RSAs