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): June 6, 2013

UDR, Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (720) 283-6120

Not Applicable

(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:

Item 1.01. Entry into A Material Definitive Agreement.

On June 6, 2013, UDR, Inc. (the “Company”) entered into a Second Amendment to the Credit Agreement (the “Credit Agreement Amendment”). The Credit Agreement Amendment relates to, and was entered into pursuant to that certain Credit Agreement, dated as of October 25, 2011, which is attached as Exhibit 10.1 to the Company’s Current Report on Form 8-K dated October 25, 2011, filed with the Securities and Exchange Commission on October 26, 2011 (Commission File No. 1-10524). The Credit Agreement, as amended, is an unsecured $900 million revolving credit facility, which includes a $100 million swingline subfacility and a $100 million letter of credit subfacility. The initial amount of $900 million may be increased in minimum amounts of $25 million, not to exceed $1.45 billion. The initial amount of the swingline subfacility may also be increased up to 10% of the total commitment under the Credit Agreement or $145 million.

Under the terms of the Credit Agreement Amendment, the applicable spread over LIBOR at the Company’s current credit rating is reduced from 122.5 to 110 basis points, and the applicable facility fee is reduced from 22.5 to 20 basis points, while the maturity date has changed to December 6, 2017, with one 6-month extension option for 7.5 basis points.

On June 6, 2013, the Company also entered into an amendment to the $250 million term loan which matures January 2016 (the “$250 Million Term Loan Amendment”), and an amendment to the $100 million term loan which matures January 2016 (the “$100 Million Term Loan Amendment,” and collectively with the $250 Million Term Loan Amendment, the “Term Loan Amendments”). United Dominion Realty, L.P. (the “Operating Partnership”) is a guarantor on the $250 million term loan and the $100 million term loan.

Under the terms of the Term Loan Amendments, the applicable spread over LIBOR for the term loans is reduced from 142.5 to 125 basis points, and the maturity dates of the term loans are extended to June 2018. Both the credit facility and the term loans have matching covenants, which have been enhanced mainly by a reduction in the cap rate used to calculate Gross Asset Value to 6 percent from 6.5 percent and the addition of an Investment in Unconsolidated Affiliates carve-out for Permitted Investments.

The Credit Agreement Amendment, the $250 Million Term Loan Amendment and the $100 Million Term Loan Amendment are attached hereto as Exhibits 10.1, 10.2 and 10.3, respectively, and each such exhibits are incorporated herein by reference. The foregoing description of the material terms of the Credit Agreement Amendment and the Term Loan Amendments, as well as the transactions contemplated thereby, does not purport to be complete and is qualified in its entirety by reference to Exhibits 10.1, 10.2 and 10.3.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information reported under Item 1.01 of this report is incorporated by reference into this Item 2.03.

Item 8.01. Other Events.

On June 10, 2013, the Company issued a press release announcing the entry into the Credit Agreement Amendment and the Term Loan Amendments. A copy of the press release is attached hereto as Exhibit 99.1, and is incorporated by reference herein.

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Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

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SIGNATURES

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

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EXHIBIT LIST

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