The difference between GAAP and non-GAAP gross margin was 2.0% and 3.3%, or $1.7 million and $1.7 million, for the three months ended October 31, 2024 and October 31, 2023, respectively.  The difference between GAAP and non-GAAP gross margin was 2.3% and 2.9%, or $4.6 million and $5.0 million, for the nine months ended October 31, 2024 and October 31, 2023, respectively. The differences were due to the effect of stock-based compensation, amortization of acquisition-related costs and restructuring expense.

AMBARELLA, INC.
RECONCILIATION OF GAAP TO NON-GAAP DILUTED EARNINGS (LOSSES) PER SHARE
(in thousands, except share and per share data)
		Three Months Ended October 31,								Nine Months Ended October 31,
			2024				2023				2024				2023
		(unaudited)
GAAP net loss		$	(24,071	)		$	(41,710	)		$	(96,892	)		$	(108,810	)
Non-GAAP adjustments:
Stock-based compensation expense			26,847				27,409				80,495				82,796
Acquisition-related costs			1,267				1,277				3,831				3,831
Restructuring expense			—				852				—				852
Income tax effect			416				994				1,016				(1,910	)
Non-GAAP net income (loss)		$	4,459			$	(11,178	)		$	(11,550	)		$	(23,241	)
GAAP - diluted weighted average shares			41,479,459				40,053,251				41,128,068				39,710,248
Non-GAAP - diluted weighted average shares			41,632,232				40,053,251				41,128,068				39,710,248
GAAP - diluted net loss per share		$	(0.58	)		$	(1.04	)		$	(2.36	)		$	(2.74	)
Non-GAAP adjustments:
Stock-based compensation expense			0.65				0.68				1.96				2.08
Acquisition-related costs			0.03				0.03				0.09				0.10
Restructuring expense			—				0.02				—				0.02
Income tax effect			0.01				0.03				0.03				(0.05	)
Effect of Non-GAAP - diluted weighted average shares			—				—				—				—
Non-GAAP - diluted net income (loss) per share		$	0.11			$	(0.28	)		$	(0.28	)		$	(0.59	)

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