Item 4. Controls and Procedures

Disclosure Controls and Procedures

Grainger carried out an evaluation, under the supervision and with the participation of its management, including the Chief Executive Officer and the Chief Financial Officer, of the effectiveness of Grainger's disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act)) as of the end of the period covered by this report. Based upon that evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that Grainger’s disclosure controls and procedures were effective as of the end of the period covered by this report in (i) ensuring that information required to be disclosed by Grainger in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms and (ii) ensuring that information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the Company's management, including the Company's Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There have been no changes in Grainger's internal control over financial reporting for the quarter ended September 30, 2021, that have materially affected, or are reasonably likely to materially affect, Grainger’s internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1: Legal Proceedings

For a description of the Company’s legal proceedings, see Note 11 - Contingencies, Legal Matters, Commitments and Other Contractual Obligations - to the Condensed Consolidated Financial Statements included under Part I, Item 1: Financial Statements.