Plexus (PLXS) 10-Q 2014 Q3 Quarterly report

Exhibit 99.1

PLEXUS CORP.

NON-GAAP SUUPLEMENTAL INFORMATION

(in thousands, except per share data)

(unaudited)

ROIC Calculation

	Nine Months Ended				Six Months Ended				Nine Months Ended
	June 28, 2014				March 29, 2014				June 29, 2013
Operating income	$	68,959			$	40,761			$	69,856
Restructuring charges	10,865				9,650				—
Adjusted operating income	$	79,824			$	50,411			$	69,856
	/		3		/		2		/		3
	26,608						25,206				23,285
	x		4		x		4		x		4
Annualized operating income	106,432				100,822				93,140
Tax rate	x		9	%	x		9	%	x		8	%
Tax impact	9,579						9,074				7,451
Operating income (tax effected)	$	96,853			$	91,748			$	85,689
Average invested capital	$	661,835			$	650,061			$	647,971
ROIC	14.6			%	14.1			%	13.2			%

	June 28,			March 29,			December 28,			September 28,
	2014			2014			2013			2013
Equity	$	760,184		$	736,493		$	722,021		$	699,301
Plus:
Debt—current	4,232			3,901			3,796			3,574
Debt—non-current	263,056			256,090			256,949			257,773
Less:
Cash and cash equivalents	(330,314		)	(323,695		)	(324,156		)	(341,865		)
	$	697,158		$	672,789		$	658,610		$	618,783

Fiscal 2014 third quarter average invested capital (June 28, 2014, March 29, 2014, December 28, 2013 and September 28, 2013) was $661,835.

Fiscal 2014 second quarter average invested capital (March 29, 2014, December 28, 2013 and September 28, 2013) was $650,061.

	June 29,			March 30,			December 29,			September 29,
	2013			2013			2012			2012
Equity	$	679,539		$	669,047		$	664,515		$	649,022
Plus:
Debt—current	2,984			2,893			10,310			10,211
Debt—non-current	258,758			258,789			259,516			260,211
Less:
Cash and cash equivalents	(285,604		)	(276,507		)	(274,183		)	(297,619		)
	$	655,677		$	654,222		$	660,158		$	621,825

Fiscal 2013 third quarter average invested capital (June 29, 2013, March 30, 2013, December 29, 2012 and September 29, 2012) was $647,971.