Capital Stock (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of Common Stock Outstanding Roll Forward

The following table summarizes the Company's common stock:



	Shares Issued	Treasury Shares (a)	Outstanding Shares
Outstanding, January 1, 2019	113,473,951	33,928,928	79,545,023

Shares issued for vested restricted stock units	321,965	125,863	196,102
Shares issued for vested performance units	908,566	379,353	529,213
Stock appreciation rights exercised	15,865	4,619	11,246

Treasury shares purchased	—	1,766,826	(1,766,826)
Outstanding, December 31, 2019	114,720,347	36,205,589	78,514,758

Shares issued for vested restricted stock units	229,413	91,188	138,225
Shares issued for vested performance stock units	471,412	206,261	265,151
Stock appreciation rights exercised	8,870	2,634	6,236


Outstanding, December 31, 2020	115,430,042	36,505,672	78,924,370

Shares issued for vested restricted stock units	305,535	112,275	193,260
Shares issued for vested performance stock units	124,077	54,950	69,127
Stock appreciation rights exercised	46,739	17,950	28,789

Outstanding, December 31, 2021	115,906,393	36,690,847	79,215,546

(a) The Company repurchases shares in connection with the issuance of shares under stock-based compensation programs and in accordance with Board authorized share repurchase programs.

Schedule of Earnings Per Share, Basic and Diluted

The following is a reconciliation of the average shares of common stock used to compute basic earnings per common share to the shares used to compute diluted earnings per common share as shown on the Consolidated Statements of Operations:


(In thousands, except per share data)	2021		2020		2019
Income (loss) from continuing operations attributable to Harsco Corporation common stockholders	$	22,137	$	(49,727)	$	10,311

Weighted-average shares outstanding—basic	79,234		78,939		79,632
Dilutive effect of stock-based compensation	1,055		—		1,743
Weighted-average shares outstanding—diluted	80,289		78,939		81,375
Income (loss) from continuing operations per common share, attributable to Harsco Corporation common stockholders:
Basic	$	0.28	$	(0.63)	$	0.13

Diluted	$	0.28	$	(0.63)	$	0.13

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following average outstanding stock-based compensation units were not included in the computation of diluted earnings per share because the effect was antidilutive or the market conditions for the performance share units were not met:


(In thousands)	2021	2020	2019
Restricted stock units	—	714	—

Stock appreciation rights	826	2,474	491
Performance share units	865	887	124