Quarterly Financial Information-Unaudited (Tables)

12 Months Ended

Sep. 27, 2015

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(in thousands, except per share data)
Fiscal Year 2015
Revenue	$	581,056	$	564,763	$	575,108	$	578,394
Operating income (loss)		36,612		30,398		40,721		(20,047	)
Net income (loss) attributable to Tetra Tech		25,575		19,017		26,206		(31,724	)
Net income (loss) attributable to Tetra Tech per share (1):
Basic	$	0.41	$	0.31	$	0.44	$	(0.53	)


Diluted	$	0.41	$	0.31	$	0.43	$	(0.53	)


Weighted-average common shares outstanding:
Basic		62,452		61,153		60,207		59,963


Diluted		63,112		61,723		60,792		59,963


Fiscal Year 2014
Revenue	$	645,848	$	586,285	$	629,502	$	622,179
Operating income		43,718		46,186		39,167		24,762
Net income attributable to Tetra Tech		27,315		31,709		26,657		22,585
Earnings per share attributable to Tetra Tech (1):
Basic	$	0.43	$	0.49	$	0.41	$	0.36


Diluted	$	0.42	$	0.48	$	0.41	$	0.35


Weighted-average common shares outstanding:
Basic		64,227		64,835		64,566		63,602


Diluted		65,048		65,710		65,302		64,235


(1)	The sum of the quarterly EPS may not add up to the full-year EPS due to rounding.