UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 3, 2016

UNITED RENTALS, INC.

UNITED RENTALS (NORTH AMERICA), INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (203) 618-7255

(Former name or former address if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

On May 3, 2016, United Rentals, Inc. held its annual meeting of stockholders at which the stockholders voted: (i) upon the election of Jenne K. Britell, José B. Alvarez, Bobby J. Griffin, Michael J. Kneeland, Singleton B. McAllister, Brian D. McAuley, John S. McKinney, Jason D. Papastavrou, Filippo Passerini, Donald C. Roof and Keith Wimbush to the Company’s Board of Directors for one-year terms; (ii) upon the ratification of the appointment of Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2016; (iii) on an advisory (non-binding) basis to approve the compensation of the Company’s named executive officers; and (iv) on an advisory (non-binding) basis upon a stockholder proposal to adopt simple majority vote.

The stockholders elected all eleven directors, approved the ratification of the appointment of Ernst & Young LLP, approved (on a non-binding basis) the compensation of the Company’s named executive officers and approved (on a non-binding basis) a stockholder proposal to adopt simple majority vote.

The final voting results for each of the matters submitted to a vote of stockholders at the 2016 annual meeting are set forth below:

Proposal 1. Election of Directors.

Proposal 2. Ratification of Appointment of Ernst & Young LLP.

Proposal 3. Advisory Vote on Executive Compensation.

Proposal 4. Advisory Vote on a Stockholder Proposal to Adopt Simple Majority Vote.

On May 3, 2016, United Rentals, Inc. issued a press release (attached hereto as Exhibit 99.1) announcing that it will participate in the Oppenheimer 11th Annual Industrial Growth Conference on Tuesday, May 10, 2016. At the conference, Michael Kneeland, chief executive officer, and William Plummer, chief financial officer, will present information regarding the Company, which may include a discussion of the Company’s business, financial performance and forward-looking information.

The presentation is scheduled to begin at 10:55 a.m., Eastern Time and will be broadcast live via the following link:

http://www.veracast.com/webcasts/opco/industrials2016/41105380682.cfm

The archived webcast will be available for 30 days following the conference directly through the Company’s website, www.unitedrentals.com.

The information in Item 7.01 of this Form 8-K, including Exhibit 99.1 attached hereto, shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing. The disclosure in this report, including Exhibit 99.1 attached hereto, of any information does not constitute an admission that such information is material.

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 undersigned hereunto duly authorized.

Date: May 3, 2016