Loss Per Share

Basic loss per share is computed by dividing net loss attributable to the Company’s stockholders by the weighted-average number of shares outstanding during the period. Diluted loss per share reflects all potential dilutive ordinary shares outstanding during the period and is computed by dividing net loss attributable to the Company’s stockholders by the weighted-average number of shares outstanding during the period increased by the number of additional shares that would have been outstanding as dilutive securities.

Basic and diluted loss per share is determined using the following information:



	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2020			2019			2020			2019
Numerator:
Net loss attributable to Charah Solutions, Inc.	$	(3,536	)	$	(18,026	)	$	(17,786	)	$	(20,845	)
Deemed and imputed dividends on Series A Preferred Stock	(167		)	—			(167		)	—
Series A Preferred Stock dividends	(858		)	—			(969		)	—
Net loss attributable to common stockholders	(4,561		)	(18,026		)	(18,922		)	(20,845		)

Denominator:
Weighted-average shares outstanding	29,927			29,559			29,785			29,374
Dilutive share-based awards	—			—			—			—
Total weighted-average shares outstanding, including dilutive shares	29,927			29,559			29,785			29,374

Basic loss per share	$	(0.15	)	$	(0.61	)	$	(0.64	)	$	(0.71	)
Diluted loss per share	$	(0.15	)	$	(0.61	)	$	(0.64	)	$	(0.71	)

The holders of the Preferred Stock have nonforfeitable rights to common stock dividends or common stock dividend equivalents. Accordingly, the Preferred Stock qualifies as participating securities.

As a result of the net loss per share for the three and six months ended June 30, 2020 and 2019, the inclusion of all potentially dilutive shares would be anti-dilutive. Therefore, dilutive shares of 10,884 and 1,388 were excluded from the computation of the weighted-average shares for diluted net loss per share for the three months ended June 30, 2020 and 2019, respectively, and dilutive shares of 6,947 and 1,191 were excluded from the computation of the weighted-average shares for diluted net loss per share for the six months ended June 30, 2020 and 2019, respectively.

A summary of securities excluded from the computation of diluted earnings per share is presented below:



	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2020	2019	2020	2019
Diluted earnings per share:
Anti-dilutive restricted and performance stock units	1,440	1,388	1,400	1,191
Anti-dilutive Series A Preferred Stock convertible into common stock	9,444	—	5,547	—
Potentially dilutive securities, excluded as anti-dilutive	10,884	1,388	6,947	1,191