The difference between GAAP and non-GAAP gross margin was 2.5% and 2.7%, or $1.6 million and $1.6 million, for the three months ended July 31, 2024 and July 31, 2023, respectively. The difference between GAAP and non-GAAP gross margin was 2.5% and 2.7%, or $3.0 million and $3.3 million, for the six months ended July 31, 2024 and July 31, 2023, respectively. The differences were due to the effect of stock-based compensation and the amortization of acquisition-related costs.

AMBARELLA, INC.
RECONCILIATION OF GAAP TO NON-GAAP DILUTED LOSSES PER SHARE
(in thousands, except share and per share data)
	Three Months Ended July 31,								Six Months Ended July 31,
		2024				2023				2024				2023
	(unaudited)
GAAP net loss	$	(34,889	)		$	(31,198	)		$	(72,821	)		$	(67,100	)
Non-GAAP adjustments:
Stock-based compensation expense		27,612				28,122				53,648				55,387
Acquisition-related costs		1,287				1,277				2,564				2,554
Income tax effect		448				(4,237	)			600				(2,904	)
Non-GAAP net loss	$	(5,542	)		$	(6,036	)		$	(16,009	)		$	(12,063	)
GAAP - diluted weighted average shares		41,129,754				39,736,704				40,952,373				39,538,748
Non-GAAP - diluted weighted average shares		41,129,754				39,736,704				40,952,373				39,538,748
GAAP - diluted net loss per share	$	(0.85	)		$	(0.79	)		$	(1.78	)		$	(1.70	)
Non-GAAP adjustments:
Stock-based compensation expense		0.68				0.71				1.32				1.40
Acquisition-related costs		0.03				0.03				0.06				0.06
Income tax effect		0.01				(0.10	)			0.01				(0.07	)
Effect of Non-GAAP - diluted weighted average shares		—				—				—				—
Non-GAAP - diluted net loss per share	$	(0.13	)		$	(0.15	)		$	(0.39	)		$	(0.31	)

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