W.W. GRAINGER, INC. — Director's Dealing 2008

May 19, 2008

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GRAINGER W W INC (GWW)
CIK: 0000277135
Period of Report: 2008-05-15

Reporting Person: KEYSER RICHARD L (Chairman and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2008-05-15	Common Stock	S	300	$89.685	Disposed	249360	Direct
2008-05-15	Common Stock	S	500	$89.70	Disposed	248860	Direct
2008-05-15	Common Stock	S	1300	$89.71	Disposed	247560	Direct
2008-05-15	Common Stock	S	700	$89.72	Disposed	246860	Direct
2008-05-15	Common Stock	S	400	$89.725	Disposed	246460	Direct
2008-05-15	Common Stock	S	200	$89.7275	Disposed	246260	Direct
2008-05-15	Common Stock	S	200	$89.73	Disposed	246060	Direct
2008-05-15	Common Stock	S	1500	$89.74	Disposed	244560	Direct
2008-05-15	Common Stock	S	400	$89.745	Disposed	244160	Direct
2008-05-15	Common Stock	S	200	$89.76	Disposed	243960	Direct
2008-05-15	Common Stock	S	500	$89.78	Disposed	243460	Direct
2008-05-15	Common Stock	S	500	$89.91	Disposed	242960	Direct
2008-05-15	Common Stock	S	100	$89.92	Disposed	242860	Direct
2008-05-15	Common Stock	S	1600	$89.93	Disposed	241260	Direct
2008-05-15	Common Stock	S	500	$89.945	Disposed	240760	Direct
2008-05-15	Common Stock	S	100	$89.955	Disposed	240660	Direct
2008-05-15	Common Stock	S	1905	$89.96	Disposed	238755	Direct
2008-05-15	Common Stock	S	100	$89.975	Disposed	238655	Direct
2008-05-15	Common Stock	S	800	$89.98	Disposed	237855	Direct
2008-05-15	Common Stock	S	600	$89.985	Disposed	237255	Direct
2008-05-15	Common Stock	S	795	$89.99	Disposed	236460	Direct
2008-05-15	Common Stock	S	300	$89.995	Disposed	236160	Direct
2008-05-15	Common Stock	S	1000	$90.00	Disposed	235160	Direct
2008-05-15	Common Stock	S	2400	$90.01	Disposed	232760	Direct
2008-05-15	Common Stock	S	200	$90.02	Disposed	232560	Direct
2008-05-15	Common Stock	S	100	$90.025	Disposed	232460	Direct
2008-05-15	Common Stock	S	1195	$90.03	Disposed	231265	Direct
2008-05-15	Common Stock	S	700	$90.04	Disposed	230565	Direct
2008-05-15	Common Stock	S	500	$90.05	Disposed	230065	Direct
2008-05-15	Common Stock	S	300	$90.09	Disposed	229765	Direct