UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )
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W.W. Grainger, Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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MMMMMMMMMMMM + MMMMMMM C 1234567890 The Sample Company 000004 ENDORSEMENT_LINE______________ SACKPACK_____________ MR A SAMPLE DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 ADD 5 ADD 6 Online Go to www.investorvote.com/GWW or scan the QR code — login details are located in the shaded bar below. Votes submitted electronically must be received by 1:00 a.m., Central Daylight Time, on April 24, 2019. Important Notice Regarding the Availability of Proxy Materials for the W.W. Grainger, Inc. Annual Meeting of Shareholders to be Held on April 24, 2019 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual shareholders’ meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The proxy statement and annual report on Form 10-K to shareholders are available at: www.investorvote.com/GWW Easy Online Access — View your proxy materials and vote. Step 1: Step 2: Step 3: Step 4: Step 5: Go to www.investorvote.com/GWW. Click on the icon on the right to view meeting materials. Return to the investorvote.com window and follow the instructions on the screen to log in. Make your selections as instructed on each screen for your delivery preferences. Vote your shares. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Obtaining a Copy of the Proxy Materials – If you want to receive a copy of these documents, you must request one. There is no charge to you for requesting a copy. Please make your request for a copy as instructed on the reverse side on or before April 15, 2019 to facilitate timely delivery. + 2 N O T C O Y 030EOA MMMMMMMMM Shareholder Meeting Notice 1234 5678 9012 345

W.W. Grainger, Inc.’s Annual Meeting of Shareholders will be held on April 24, 2019 at 10:00 a.m., CDT at 100 Grainger Parkway, Lake Forest, Illinois 60045-5201. Proposals – MANAGEMENT RECOMMENDS A VOTE “FOR” ITEMS 1, 2, AND 3. 1. Election of Directors: Rodney C. Adkins, Brian P. Anderson, V. Ann Hailey, Stuart L. Levenick, D.G. Macpherson, Neil S. Novich, Beatriz R. Perez, Michael J. Roberts, E. Scott Santi, James D. Slavik and Lucas E. Watson 2. Proposal to ratify the appointment of Ernst & Young LLP as independent auditor for the year ending December 31, 2019. 3. Say on Pay: advisory proposal to approve compensation of the Company’s Named Executive Officers. NOTE: To transact such other business as may properly come before the Annual Meeting and any adjournment or postponement thereof. PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must vote online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you. Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. — — — Internet – Go to www.investorvote.com/GWW. Phone – Call us free of charge at 1-866-641-4276. Email – Send an email to investorvote@computershare.com with “Proxy Materials W.W. Grainger” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, requests for a paper copy of proxy materials must be received by April 15, 2019. Shareholder Meeting Notice

*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on April 24, 2019 W.W. GRAINGER, INC. You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. W.W. GRAINGER, INC. 100 GRAINGER PARKWAY LAKE FOREST, IL 60045 0000403650_1 R1.0.1.18 See the reverse side of this notice to obtain proxy materials and voting instructions. Meeting Information Meeting Type: Annual Meeting For holders as of: March 04, 2019 Date: April 24, 2019Time: 10:00 AM CDT Location: 100 Grainger Parkway Lake Forest, Illinois 60045

Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: Have the information that is printed in the box marked by the arrow (located on the by the arrow (located on the following page) in the subject line. How To Vote Please Choose One of the Following Voting Methods marked by the arrow available and follow the instructions. 0000403650_2 R1.0.1.18 Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. 1. Notice & Proxy Statement2. Annual Report How to View Online: following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET:www.proxyvote.com 2) BY TELEPHONE:1-800-579-1639 3) BY E-MAIL*:sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before April 10, 2019 to facilitate timely delivery.

The Board of Directors recommends you vote FOR the following: 1. Election of Directors Nominees 01 06 11 Rodney C. Adkins Neil S. Novich Lucas E. Watson 02 Brian P. Anderson 07 Beatriz R. Perez 03 V. Ann Hailey 08 Michael J. Roberts 04 Stuart L. Levenick 05 D.G. Macpherson 09 E. Scott Santi 10 James D. Slavik The Board of Directors recommends you vote FOR proposals 2 and 3. 2. Proposal to ratify the appointment of Ernst & Young LLP as independent auditor for the year ending December 31, 2019. 3. Say on Pay: Advisory proposal to approve compensation of the Company's Named Executive Officers. NOTE: In their discretion upon such other matters as may properly come before the meeting or any adjournment or postponement thereof. 0000403650_3 R1.0.1.18 Voting items

0000403650_4 R1.0.1.18