W.W. GRAINGER, INC. — Director's Dealing 2010

Mar 19, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GRAINGER W W INC (GWW)
CIK: 0000277135
Period of Report: 2010-03-18

Reporting Person: HOWARD JOHN L (Sr. VP and General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-18	Common Stock	M	12500	$45.50	Acquired	55920	Direct
2010-03-18	Common Stock	S	100	$108.28	Disposed	55820	Direct
2010-03-18	Common Stock	S	100	$108.29	Disposed	55720	Direct
2010-03-18	Common Stock	S	100	$108.30	Disposed	55620	Direct
2010-03-18	Common Stock	S	927	$108.32	Disposed	54693	Direct
2010-03-18	Common Stock	S	100	$108.395	Disposed	54593	Direct
2010-03-18	Common Stock	S	400	$108.42	Disposed	54193	Direct
2010-03-18	Common Stock	S	800	$108.44	Disposed	53393	Direct
2010-03-18	Common Stock	S	400	$108.48	Disposed	52993	Direct
2010-03-18	Common Stock	S	200	$108.50	Disposed	52793	Direct
2010-03-18	Common Stock	S	300	$108.51	Disposed	52493	Direct
2010-03-18	Common Stock	S	300	$108.52	Disposed	52193	Direct
2010-03-18	Common Stock	S	400	$108.53	Disposed	51793	Direct
2010-03-18	Common Stock	S	100	$108.54	Disposed	51693	Direct
2010-03-18	Common Stock	S	100	$108.55	Disposed	51593	Direct
2010-03-18	Common Stock	S	600	$108.60	Disposed	50993	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-18	Option	$45.50	M	12500	Disposed	2013-04-29	Common Stock (12500)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Option	$54.14	2014-04-27	Common Stock (12000)	12000	Direct
Option	$52.29	2015-04-26	Common Stock (13000)	13000	Direct
Option	$76.61	2016-04-25	Common Stock (10000)	10000	Direct
Option	$83.08	2017-04-24	Common Stock (10000)	10000	Direct
Option	$85.82	2018-04-29	Common Stock (11000)	11000	Direct
Option	$81.49	2019-04-28	Common Stock (21000)	21000	Direct