Form SD UNITED RENTALS, INC.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM SD

Specialized Disclosure Report

UNITED RENTALS, INC.

UNITED RENTALS (NORTH AMERICA), INC.

(Exact name of registrant as specified in its charter)

Joli L. Gross, Senior Vice President, Chief Legal and Sustainability Officer, Corporate Secretary, (203) 618-7342
(Name and telephone number, including area code, of the person to contact in connection with this report)

Check the appropriate box to indicate the rule pursuant to which this Form is being submitted, and provide the period to which the information in this Form applies:

☒ Rule 13p-1 under the Securities Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025

¨ Rule 13q-1 under the Securities Act (17 CFR 240.13q-1) for the fiscal year ended December 31, 2025

Section 1 – Conflict Minerals Disclosure

Item 1.01. Conflict Minerals Disclosure and Report

Conflict Minerals Disclosure

A copy of the Company’s Conflict Minerals Report for the reporting period January 1, 2025 to December 31, 2025 is filed as Exhibit 1.01 hereto and is publicly available at https://investors.unitedrentals.com/financials/sec-filings/default.aspx.

Item 1.02. Exhibit

A copy of our Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form is provided as Exhibit 1.01 hereto.

Section 3 – Exhibits

Item 3.01. Exhibits

The following exhibit is filed as part of this report.

Exhibit 1.01 – Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

Date: May 28, 2026

UNITED RENTALS, INC.

By: /s/ Joli L. Gross

Name: Joli L. Gross

Title: Senior Vice President, Chief Legal and Sustainability Officer, Corporate Secretary
 

UNITED RENTALS (NORTH AMERICA), INC.

By: /s/ Joli L. Gross

Name: Joli L. Gross

Title: Senior Vice President, Chief Legal and Sustainability Officer, Corporate Secretary