Quarterly Financial Information - Unaudited

12 Months Ended

Jan. 31, 2012

Quarterly Financial Information - Unaudited

20. Quarterly Financial Information – Unaudited

A summary of quarterly financial information follows:

Quarter ended	April 30			July 31			October 31		January 31
Fiscal 2012
Total revenues	$	230,035		$	213,740		$	250,508	$	320,355
Gross margin	$	185,390		$	169,848		$	210,262	$	275,680
Operating income	$	16,173		$	4,844		$	25,405	$	65,770
Net income (loss) attributable to Mentor Graphics shareholders	$	(2,353	)	$	4,334		$	24,071	$	57,820
Net income (loss) per share, basic	$	(0.02	)	$	0.04		$	0.22	$	0.53
Net income (loss) per share, diluted	$	(0.02	)	$	0.04		$	0.22	$	0.52
Quarter ended	April 30			July 31			October 31		January 31
Fiscal 2011
Total revenues	$	180,577		$	187,934		$	238,937	$	307,305
Gross margin	$	147,198		$	152,764		$	195,947	$	262,596
Operating income (loss)	$	(14,994	)	$	(10,491	)	$	20,641	$	57,383
Net income (loss) attributable to Mentor Graphics shareholders	$	(23,025	)	$	(14,247	)	$	15,257	$	50,599
Net income (loss) per share, basic	$	(0.22	)	$	(0.13	)	$	0.14	$	0.46
Net income (loss) per share, diluted	$	(0.22	)	$	(0.13	)	$	0.14	$	0.45

Certain items have been reclassified from operating expenses to cost of revenues for each quarter of fiscal 2011. For further detail regarding these reclassifications, see Note 2. “Summary of Significant Accounting Policies.”