EARNINGS (LOSS) PER SHARE (Tables)

9 Months Ended

Sep. 27, 2023

Earnings Per Share [Abstract]

Schedule of Earnings Per Share

The following table sets forth reconciliations of the numerators and denominators used to compute basic and diluted earnings (loss) per share of Class A common stock (in thousands, except per share amounts):

			Thirteen Weeks Ended				Thirty-Nine Weeks Ended
			September 27 2023		September 28 2022		September 27 2023		September 28 2022
Numerator:
	Net income (loss) attributable to Shake Shack Inc.—basic		$	7,627	$	(2,024)	$	13,041	$	(13,374)
	Reallocation of net income attributable to non-controlling interests from the assumed conversion of Class B shares		509		—		696		—
	Net income (loss) attributable to Shake Shack Inc.—diluted		$	8,136	$	(2,024)	$	13,737	$	(13,374)
Denominator:
	Weighted average shares of Class A common stock outstanding—basic		39,460		39,274		39,402		39,221
	Effect of dilutive securities:
		Stock options	74		—		77		—
		Performance stock units	11		—		11		—
		Restricted stock units	129		—		82		—
		Convertible Notes	1,467		—		1,467		—
		Shares of Class B common stock	2,837		—		2,845		—
	Weighted average shares of Class A common stock outstanding—diluted		43,978		39,274		43,884		39,221
Earnings (loss) per share of Class A common stock—basic			$	0.19	$	(0.05)	$	0.33	$	(0.34)
Earnings (loss) per share of Class A common stock—diluted			$	0.19	$	(0.05)	$	0.31	$	(0.34)

The following table presents potentially dilutive securities excluded from the computations of diluted earnings (loss) per share of Class A common stock:

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 27 2023		September 28 2022		September 27 2023		September 28 2022
Stock options	—		138,306	(2)	—		138,306	(2)
Performance stock units	100,898	(1)	160,064	(2)	100,898	(1)	160,064	(2)
Restricted stock units	—		398,269	(2)	—		398,269	(2)
Shares of Class B common stock	—		2,869,513	(2)	—		2,869,513	(2)
Convertible notes	—		1,466,975	(2)	—		1,466,975	(2)

(1)Number of securities outstanding at the end of the period that were excluded from the computation of diluted earnings (loss) per share of Class A common stock because the performance conditions associated with these awards were not met assuming the end of the reporting period was the end of the performance period.

(2)Number of securities outstanding at the end of the period that were excluded from the computation of diluted loss per share of Class A common stock because the effect would have been anti-dilutive.