ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

Note: Option positions (PUT/CALL) are excluded.

Q2 2016

Shares 2,750 Value ($000) $326 Avg Close $104.92 Range $98.81 - $109.58

Q1 2016

Shares 35,540 Value ($000) $3,963 Avg Close $95.34 Range $88.43 - $102.02

Q4 2015

Shares 39,140 Value ($000) $4,477 Avg Close $105.21 Range $98.01 - $109.49

Q1 2014

Shares 988,085 Value ($000) $106,703 Avg Close $91.92 Range $85.62 - $98.30

Q4 2013

Shares 1,026,965 Value ($000) $107,082 Avg Close $90.95 Range $84.34 - $94.74

Q3 2013

Shares 703,480 Value ($000) $69,476 Avg Close $81.20 Range $74.57 - $86.97

Q2 2013

Shares 830,915 Value ($000) $70,786 Avg Close $73.48 Range $68.51 - $77.84

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2016	2,750	$326	$104.92	$98.81 - $109.58
Q1 2016	35,540	$3,963	$95.34	$88.43 - $102.02
Q4 2015	39,140	$4,477	$105.21	$98.01 - $109.49
Q1 2014	988,085	$106,703	$91.92	$85.62 - $98.30
Q4 2013	1,026,965	$107,082	$90.95	$84.34 - $94.74
Q3 2013	703,480	$69,476	$81.20	$74.57 - $86.97
Q2 2013	830,915	$70,786	$73.48	$68.51 - $77.84