GRAINGER W W INC

Ticker: GWW CUSIP: 384802104 Class: COM

DUDLEY & SHANLEY, INC.'s Holding History (CIK: 0000883511)

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

Q1 2017

Shares 4,000 Value ($000) $931 Avg Close $215.43 Range $199.88 - $229.25

Q4 2016

Shares 4,400 Value ($000) $1,022 Avg Close $194.21 Range $175.20 - $210.08

Q3 2016

Shares 2,600 Value ($000) $585 Avg Close $194.57 Range $185.31 - $204.35

Q2 2016

Shares 2,000 Value ($000) $454 Avg Close $196.22 Range $183.45 - $205.91

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	4,000	$931	$215.43	$199.88 - $229.25
Q4 2016	4,400	$1,022	$194.21	$175.20 - $210.08
Q3 2016	2,600	$585	$194.57	$185.31 - $204.35
Q2 2016	2,000	$454	$196.22	$183.45 - $205.91