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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2025

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______ to _______

Commission file number 1-5684

W.W. Grainger, Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (847) 535-1000

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer ☒ Accelerated Filer ☐ Non-accelerated Filer ☐ Smaller Reporting Company ☐ Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that require a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §2401.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ☐ No ☒

The aggregate market value of the voting common equity held by non-affiliates of the registrant was $41,053,116,330 as of the close of trading as reported on the New York Stock Exchange on June 30, 2025. The Company does not have nonvoting common equity.

The registrant had 47,373,024 shares of the Company’s Common Stock outstanding as of February 12, 2026.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant's definitive proxy statement to be filed in connection with the annual meeting of shareholders to be held on April 29, 2026, are incorporated by reference into Part III of this Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (Form 10-K) where indicated. The registrant's definitive proxy statement will be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.

Forward-Looking Statements

From time to time in this Annual Report on Form 10-K as well as in other written reports, communications and verbal statements, Grainger (as defined below) makes forward-looking statements that are not historical in nature but concern forecasts of future results, business plans, analyses, prospects, strategies, objectives and other matters that may be deemed to be “forward-looking statements” under the federal securities laws. Forward-looking statements can generally be identified by their use of terms such as “anticipate,” “estimate,” “believe,” “expect,” “could,” “forecast,” “may,” “intend,” “plan,” “predict,” “project,” “will,” or “would,” and similar terms and phrases, including references to assumptions.

Grainger cannot guarantee that any forward-looking statement will be realized and achievement of future results is subject to risks and uncertainties, many of which are beyond Grainger's control, which could cause Grainger's results to differ materially from those that are presented.

Important factors that could cause actual results to differ materially from those presented or implied in the forward-looking statements include, without limitation: inflation, higher product costs or other expenses, including operational and administrative expenses; a major loss of customers; loss or disruption of sources of supply; changes in customer or product mix; increased competitive pricing pressures; changes in third-party practices regarding digital advertising; failure to enter into or sustain contractual arrangements on a satisfactory basis with group purchasing organizations; failure to develop, manage or implement new technology initiatives or business strategies, including with respect to Grainger's eCommerce platforms and artificial intelligence; failure to adequately protect intellectual property or successfully defend against infringement claims; fluctuations or declines in Grainger's gross profit margin; Grainger's responses to market pressures; the outcome of pending and future litigation or governmental or regulatory proceedings, including with respect to wage and hour, anti-bribery and corruption, environmental, regulations related to advertising, marketing and the internet, consumer protection, pricing (including disaster or emergency declaration pricing statutes), product liability, compliance or safety, trade and export compliance, general commercial disputes, or privacy and cybersecurity matters; investigations, inquiries, audits and changes in laws and regulations; failure to comply with laws, regulations and standards, including new or stricter environmental laws or regulations; government contract matters, including new or revised provisions relating to contract compliance or performance; the impact of any government shutdown; disruption or breaches of information technology or data security systems involving Grainger or third parties on which Grainger depends; general industry, economic, market or political conditions; general global economic conditions including existing, new, or increased tariffs, trade issues and changes in trade policies, inflation, and interest rates; currency exchange rate fluctuations; market volatility, including price and trading volume volatility or price declines of Grainger's common stock; an incident that adversely impacts Grainger's reputation or brand; commodity price volatility; facilities disruptions or shutdowns; higher fuel costs or disruptions in transportation services; effects of outbreaks of pandemic disease or viral contagions, global conflicts, natural or human induced disasters, extreme weather, and other catastrophes or conditions; effects of climate change; failure to execute on our corporate responsibility efforts; competition for, or failure to attract, retain, train, motivate and develop executives and key team members; loss of key members of management or key team members; loss of operational flexibility and potential for work stoppages or slowdowns if team members unionize or join a collective bargaining arrangement; changes in effective tax rates; changes in credit ratings or outlook; Grainger's incurrence of indebtedness or failure to comply with restrictions and obligations under its debt agreements and instruments and other factors identified under Part I, Item 1A: Risk Factors and elsewhere in this Form 10-K.

The preceding list is not intended to be an exhaustive list of all of the factors that could impact Grainger's forward-looking statements. Given these risks and uncertainties, you are cautioned not to place undue reliance on Grainger's forward looking-statements and Grainger undertakes no obligation to update or revise any of its forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

PART I