The Company maintains long-term incentive plans which allow for granting stock-based compensation awards of Company Common Stock to directors, employees, officers, and consultants or advisers who render services to the Company or its subsidiaries, including stock options, restricted stock, restricted stock units (“RSUs”), performance stock units (“PSUs”), market-based performance stock units (“MSUs”), stock appreciation rights, and other stock-based awards or dividend equivalents. Forfeitures are recognized in the period in which they occur.

The Board of Directors (“Board”) adopted, and the Company’s stockholders approved, the 2015 Equity Incentive Plan, as amended and restated in 2019 (the “2015 Plan”), which allows for shares to be granted as part of the Company’s long-term incentive plan. On April 24, 2024, the Board approved an amendment to the 2015 Plan and the Company’s stockholders subsequently approved the adoption of the amended and restated 2015 Plan on June 11, 2024. The amendment to the 2015 Plan allows for, among other things, an increase in the number of shares available for future grants to 8 million shares, plus the number of shares available for issuance under the 2015 Plan on the date the Company’s stockholders approved the amendment. As of December 31, 2024, the Company had approximately 10 million shares available for grant under the 2015 Plan.

Equity awards granted to employees and executive officers generally vest within one to three years from the grant date either ratably on each anniversary, or entirely at the end of the service period. Awards may also contain performance conditions in addition to time based vesting conditions. Performance awards relate to the achievement of defined levels of performance and will vest and become payable at the end of the vesting period. Performance awards may contain targeted performance levels, which may ultimately vest within a range of 0% to 200% of the target award, based on defined operating metrics or market performance as compared to a peer group. RSUs granted to non-employee directors generally vest immediately and are issued on the vesting date, or may be deferred.

Total stock-based compensation expense in the accompanying Statements of Operations was $94 million, $104 million and $101 million during the years ended December 31, 2024, 2023 and 2022, respectively. These amounts are included in Corporate expenses in the Company’s Statements of Operations.

During the year ended December 31, 2024, the Company granted RSUs to employees of the Company with an aggregate fair value of $88 million. Each RSU represents the right to receive payment in respect of one share of the Company’s Common Stock.


	Units	Weighted Average Grant Date Fair Value (a)
Unvested outstanding as of December 31, 2023	1,922,419	$	60.11
Granted (b)	2,020,005	43.77
Vested	(1,055,671)	62.64
Forfeited	(217,942)	49.06
Unvested outstanding as of December 31, 2024	2,668,811	47.64

During the year ended December 31, 2024, the Company granted PSUs to employees of the Company with an aggregate fair value of $5 million as of December 31, 2024. On the vesting date, recipients will receive between 0% and 200% of the target number of PSUs granted, in the form of Company Common Stock, based on the achievement of specified performance conditions and terms of the underlying award agreement. The fair value of the PSUs is based on the market price of our common stock when a mutual understanding of the key terms and conditions of the awards between the Company and recipient is achieved. The awards are remeasured each period until such an understanding is reached.


	Units	Weighted Average Grant Date Fair Value (a)
Unvested outstanding as of December 31, 2023	328,230	$	46.88
Granted	161,688	33.42
Performance Adjustment	27,314
Vested	(99,377)	41.66
Forfeited	(20,699)	39.86
Unvested outstanding as of December 31, 2024	397,156	33.42

(a)This represents the weighted-average grant date fair value for PSUs where the grant date has been achieved or the price of our common stock as of the balance sheet date for PSUs where a grant date has not been achieved.

During the year ended December 31, 2024, the Company granted MSUs to employees of the Company with an aggregate fair value of $26 million. On the vesting date, recipients will receive between 0% and 200% of the granted MSUs in the form of Company Common Stock based on the achievement of specified market and service conditions. Based on the terms and conditions of the awards, the grant date fair value of the MSUs was determined using a Monte Carlo simulation model. Key assumptions for the Monte Carlo simulation model are the risk-free interest rate, expected volatility, expected dividends and correlation coefficient. The effect of market conditions is considered in determining the grant date fair value, which is not subsequently revised based on actual performance.


	Units	Weighted Average Grant Date Fair Value (a)
Unvested outstanding as of December 31, 2023	872,019	$	85.11
Granted	435,536	58.56
Performance Adjustment	(154,420)
Vested	(18,713)	63.99
Forfeited	(38,318)	77.95
Unvested outstanding as of December 31, 2024	1,096,104	73.15


Stock Option Exercises
	Years Ended December 31,
(Dollars in millions)	2024		2023		2022





Option Exercises:
Number of options exercised	—		88		43,384
Cash received for options exercised	$	—	$	—	$	1
Aggregate intrinsic value of options exercised	$	—	$	—	$	2


Changes in AOCI by component, net of tax
(In millions)	Unrealized Net Gains on Derivative Instruments		Foreign Currency Translation Adjustments		Other		Total
Balances as of December 31, 2022	$	94	$	(1)	$	(1)	$	92
Other comprehensive income before reclassifications	—		1		4		5

Total other comprehensive income, net of tax	—		1		4		5
Balances as of December 31, 2023	$	94	$	—	$	3	$	97
Other comprehensive loss before reclassifications	—		—		(1)		(1)

Total other comprehensive loss, net of tax	—		—		(1)		(1)
Balances as of December 31, 2024	$	94	$	—	$	2	$	96

On November 8, 2018, the Company announced that its Board of Directors authorized a $150 million common stock repurchase program (the “2018 Share Repurchase Program”). For the year ended December 31, 2024, the Company acquired 3,872,478 shares of common stock under the 2018 Share Repurchase Program at an aggregate value of $141 million, excluding any applicable excise taxes, and an average of $36.38 per share. In connection with these repurchases, including repurchases of $9 million in 2018, the 2018 Share Repurchase Program was completed and all shares repurchased under the 2018 Share Repurchase Program were retired.

On October 2, 2024, the Company announced that its Board of Directors authorized a $500 million common stock repurchase program (the “2024 Share Repurchase Program”). Under the 2024 Share Repurchase Program, the Company may, from time to time, repurchase shares of common stock on the open market (either with or without a 10b5-1 plan) or through privately negotiated transactions. As of December 31, 2024, the Company has acquired 1,262,990 shares of common stock under the 2024 Share Repurchase Program at an aggregate value of $50 million, excluding any applicable excise taxes, and an average of $39.59 per share. The 2024 Share Repurchase Program has no time limit and may be suspended or discontinued at any time without notice. There is no minimum number of shares of common stock that the Company is required to repurchase under the 2024 Share Repurchase Program. All share repurchases under the 2024 Share Repurchase Program are retired upon repurchase.

In connection with the settlement of convertible notes during 2021, the Company issued approximately 139 thousand shares of common stock, at a fair value of approximately $14 million. The shares were contributed to, and held in, an escrow trust which was recorded within Treasury stock. During the year ended December 31, 2024, the shares were released from escrow and returned to the Company following an update to the estimated disputed claims liability.