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² Assumes all outstanding ordinary shares are represented by ADSs.  Each ADS represents four ordinary shares.

Silicon Motion Technology Corporation
Reconciliation of GAAP to Non-GAAP Operating Results
(in thousands, except percentages and per ADS data, unaudited)
	For the Three Months Ended
	Dec. 31,   2014			Sep. 30,   2015			Dec. 31,   2015
	(US$)			($)			($)
GAAP net income		12,073			13,180			13,412
Stock-based compensation:
Cost of sales		99			88			132
Research and development		2,583			2,118			3,319
Sales and marketing		701			601			859
General and administrative		624			616			913
Total stock-based compensation		4,007			3,423			5,223
Non-recurring items:
Litigation expenses		(6	)		24			28
Acquisition costs		30			(6	)		38
Amortization of   intangibles assets		-			526			526
Foreign exchange loss (gain),net		2,422			2,901			455
Non-GAAP net income		18,526			20,048			19,682
Shares used in computing non-GAAP diluted earnings per ADS		34,650			35,273			35,493
Non-GAAP diluted earnings per ADS	$	0.53		$	0.57		$	0.55
Non-GAAP gross margin		52.5	%		51.6	%		50.1	%
Non-GAAP operating margin		26.0	%		24.5	%		24.4	%

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