Plexus (PLXS) 10-K 2019 FY Annual report

													Exhibit 99.1
Return on Invested Capital ("ROIC") and Economic Return Calculations GAAP to non-GAAP reconciliation (dollars in thousands):
				Fiscal year ended
				September 28, 2019			September 29, 2018			September 30, 2017
Operating income, as reported				$	142,055		$	118,283		$	129,908
Restructuring and other charges				1,678			—			—
One-time employee bonus				—			13,512			—
Adjusted operating income				143,733			131,795			129,908
Tax rate				16.0		%	10.0		%	8.0		%
Adjusted operating income (tax effected)				$	120,736		$	118,615		$	119,515
Average invested capital				$	923,107		$	735,598		$	738,266
ROIC				13.1		%	16.1		%	16.2		%
WACC				9.0		%	9.5		%	10.5		%
Economic Return				4.1		%	6.6		%	5.7		%
Average Invested Capital	Fiscal 2019
	Actual			Actual			Actual			Actual			Actual			Average invested capital
	9/28/19			6/29/19			3/30/19			12/29/18			9/29/18
Equity	$	865,576		$	860,791		$	875,444		$	905,163		$	921,143
Plus:
Debt - current	100,702			138,976			93,197			8,633			5,532
Debt - non-current	187,278			187,581			187,120			187,567			183,085
Less:
Cash and cash equivalents	(223,761		)	(198,395		)	(184,028		)	(188,799		)	(297,269		)
	$	929,795		$	988,953		$	971,733		$	912,564		$	812,491		$	923,107
Average Invested Capital	Fiscal 2018
	Actual			Actual			Actual			Actual			Actual			Average invested capital
	9/29/18			6/30/18			3/31/18			12/30/17			9/30/17
Equity	$	921,143		$	882,360		$	920,503		$	933,849		$	1,025,939
Plus:
Debt - current	5,532			6,365			180,772			179,881			286,934
Debt - non-current	183,085			180,204			27,217			26,047			26,173
Less:
Cash and cash equivalents	(297,269		)	(332,723		)	(402,470		)	(506,694		)	(568,860		)
	$	812,491		$	736,206		$	726,022		$	633,083		$	770,186		$	735,598
Average Invested Capital	Fiscal 2017
	Actual			Actual			Actual			Actual			Actual			Average invested capital
	9/30/2017			7/1/2017			4/1/2017			12/30/2016			10/1/2016
Equity	$	1,025,939		$	991,306		$	961,438		$	927,542		$	916,797
Plus:
Debt - current	286,934			267,297			92,623			78,879			78,507
Debt - non-current	26,173			26,138			185,638			184,136			184,002
Less:
Cash and cash equivalents	(568,860		)	(519,172		)	(524,520		)	(496,505		)	(432,964		)
	$	770,186		$	765,569		$	715,179		$	694,052		$	746,342		$	738,266