Summarized quarterly financial information for fiscal 2016 and 2015 is as follows:



2016	1st quarter			2nd quarter (1)			3rd quarter			4th quarter (2)			Fiscal year
Net revenue	$	646.5		$	609.5		$	599.8		$	648.3		$	2,504.1
Gross profit	554.7			516.5			508.8			553.4			2,133.4
Income (loss) from operations	21.5			4.3			(14.8		)	(9.7		)	1.3
Provision for income taxes	(2.7		)	(269.5		)	(21.3		)	(16.7		)	(310.2		)
Net income (loss)	19.1			(268.6		)	(43.8		)	(37.2		)	(330.5		)
Basic net income (loss) per share	$	0.08		$	(1.18	)	$	(0.19	)	$	(0.17	)	$	(1.46	)
Diluted net income (loss) per share	$	0.08		$	(1.18	)	$	(0.19	)	$	(0.17	)	$	(1.46	)
Income (loss) from operations includes the following items:
Stock-based compensation expense	$	50.2		$	40.7		$	50.2		$	56.1		$	197.2
Amortization of acquisition related intangibles	22.4			20.2			19.7			19.9			82.2

2015	1st quarter			2nd quarter			3rd quarter			4th quarter			Fiscal year
Net revenue	$	592.5		$	637.1		$	618.0		$	664.6		$	2,512.2
Gross profit	513.8			549.2			532.0			575.1			2,170.1
Income from operations	42.2			49.9			14.6			14.0			120.7
Provision for income taxes	(7.3		)	(11.6		)	(0.9		)	18.6			(1.2		)
Net income	28.3			31.3			10.7			11.5			81.8
Basic net income per share	$	0.12		$	0.14		$	0.05		$	0.05		$	0.36
Diluted net income per share	$	0.12		$	0.13		$	0.05		$	0.05		$	0.35
Income from operations includes the following items:
Stock-based compensation expense	$	33.6		$	39.8		$	43.1		$	49.1		$	165.6
Amortization of acquisition related intangibles	23.9			24.6			22.6			21.9			93.0
Restructuring charges, net	2.3			0.8			—			—			3.1

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(1)

Certain second quarter fiscal 2016 balances have been revised to include the correction of an error identified in the third quarter of fiscal 2016, resulting in an additional $33.1 million of income tax expense from the previously reported results, primarily related to the establishment of a valuation allowance. See Note 1, "Business and Summary of Significant Accounting Policies" for further discussion.

(2)

Subsequent to furnishing preliminary financial statements on Form 8-K on February 25, 2016 for the three and twelve months ended January 31, 2016, Autodesk identified a $4.5 million tax adjustment associated with deemed foreign withholding taxes related to non-permanently reinvested earnings in foreign jurisdictions which have not yet repatriated resulting in changes to the Consolidated Financial Statements as reflected in this Annual Report on Form 10-K. This non-cash adjustment resulted in an increase to GAAP diluted loss per share from $(0.15) to $(0.17) for the three months ended January 31, 2016.