Basic EPS is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the applicable period. Diluted EPS is computed by dividing income by the weighted-average number of shares of common stock outstanding, increased by incremental shares that would be outstanding if potentially dilutive non-participating securities were converted to common stock as calculated using the treasury stock method. EPS for the periods were:


	Three Months Ended March 31,
		2026		2025
Numerator: (Millions of Dollars)
Net Income (Loss)		$	63	$	(135)




Denominator: (Thousands)
Weighted-Average Number of Common Shares Outstanding - Basic		45,612		45,849

Restricted stock units		186		—
Performance stock units		1,633		—
Weighted-Average Number of Common Shares Outstanding - Diluted		47,431		45,849

Earnings per Share - Basic		$	1.38	$	(2.94)
Earnings per Share - Diluted		1.33		(2.94)

Diluted EPS for the three months ended March 31, 2026 excluded (i) 145,911 PSUs because their performance targets were not met as of March 31, 2026; and (ii) 3,142 PSUs and 1,610 RSUs due to their anti-dilutive nature. As there was a Net Loss for the three months ended March 31, 2025, the computation of diluted EPS excludes 486,688 RSUs and 2,109,479 PSUs.