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): January 24, 2012

(Exact name of registrant as specified in its charter)

(Address of principal executive offices, including zip code)

Registrant’s telephone number, including area code: (203) 622-3131

(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 (see General Instruction A.2. below):

On January 25, 2012, United Rentals, Inc. (the “Company”), issued a press release reporting its results of operations for the quarter and year ended December 31, 2011. A copy of the press release is being furnished with this report as Exhibit 99.1.

On January 24, 2012, Mr. Howard L. Clark, Jr., a member of the Board of Directors of the Company, notified the Company of his decision not to stand for re-election at the Company’s 2012 Annual Meeting of Stockholders. Mr. Clark did not cite any disagreement on any matter relating to the Company’s operations, policies or practices.

Certain information concerning our business, financial results and 2012 outlook that we expect to use at certain investor meetings and presentations can be accessed currently on our website, www.ur.com. Such presentation will be maintained on our website for at least the period of its use at such meetings and presentations or until superseded by more current information.

The presentation includes certain financial measures — free cash flow, earnings before interest, taxes, depreciation and amortization (“EBITDA”), adjusted EBITDA and adjusted earnings per share (“EPS”) — that are “non-GAAP financial measures” as defined under the rules of the SEC. Free cash flow represents net cash provided by operating activities, less purchases of rental and non-rental equipment plus proceeds from sales of rental and non-rental equipment and excess tax benefits from share-based payment arrangements, net. EBITDA represents the sum of net income (loss), (income) loss from discontinued operation, net of taxes, provision (benefit) for income taxes, interest expense, net, interest expense-subordinated convertible debentures, net, depreciation of rental equipment and non-rental depreciation and amortization. Adjusted EBITDA represents EBITDA plus the sum of the RSC merger related costs, the restructuring charge and stock compensation expense, net. Adjusted EPS represents EPS plus the sum of the RSC merger related costs, the restructuring charge, the gains/losses on the repurchase/redemption of debt securities and retirement of subordinated convertible debentures and ABL Amendment, and the asset impairment charge.

The presentation includes reconciliations of these non-GAAP financial measures to their nearest generally accepted accounting principles financial measures. The Company believes that: (i) free cash flow provides useful additional information concerning cash flow available to meet future debt service obligations and working capital requirements; (ii) EBITDA and adjusted EBITDA provide useful information about operating performance and period-over-period growth and (iii) adjusted EPS provides useful information concerning future profitability. However, none of these measures should be considered as alternatives to net income, cash flows from operating activities or earnings per share under GAAP as indicators of operating performance or liquidity.

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:        January 25, 2012

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