SECURITIES AND EXCHANGE COMMISSION

UNITED STATES

Washington, DC 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) July 15, 2015

REGENCY CENTERS CORPORATION

REGENCY CENTERS, L.P.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number including area code: (904)-598-7000

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:

Effective as of July 15, 2015, Regency Centers Corporation and Regency Centers, L.P. entered into an amended and restated severance and change of control agreement with each of the following executive officers (the “executive officers”): Martin E. Stein, Jr., Chairman and CEO; Brian M. Smith, President and Chief Operating Officer, Lisa Palmer, Executive Vice President and CFO, Dan McFarland Chandler, III, Managing Director—West, John S. Delatour, Managing Director—Central, and James D. Thompson, Managing Director—East (collectively, the “Agreements”).

The Agreements expire on December 31, 2018 and automatically renew for successive additional three-year terms unless either party gives written notice of non-renewal at least 90 days before the end of the current term. The Agreements are substantially similar to the severance and change in control agreements entered into with each of the executive officers effective January 1, 2014, except among other things: (i) upon a termination following a change in control, the executive’s performance awards would be paid based on performance through the change in control date rather than at the maximum level regardless of performance (this change will become effective January 1, 2017, for Messrs. Chandler’s, Delatour’s and Thompson’s awards); and (ii) in connection with a severance payment, executives that are subject to an excise tax will either pay the excise tax or have their payments capped at a level so there would be no excise tax depending upon which option provides the executives with the greatest benefit on an after-tax basis.

The summary is qualified in its entirety by reference to the full text of the Agreement for each executive officer, which Agreements are filed as exhibits to this Form 8-K.

On July 15, 2015, the Company amended and restated its Amended and Restated Bylaws to (i) opt out of Florida Business Corporation Act Section 607.0902, commonly known as the control share acquisition statute; (ii) fix the required percentage of votes required to call a special meeting of shareholders at 25%; (iii) adopt a majority voting standard for the election of directors in uncontested elections; (iv) adopt an exclusive forum bylaw and (v) adopt a proxy access right for shareholders.

The majority voting standard requires that nominees to the Board of Directors in uncontested elections receive a majority of the votes cast rather than simply a plurality.

The exclusive forum bylaw provides that, unless the Company consents in writing to the selection of an alternative forum, the sole and exclusive forum for (i) any derivative action or proceeding brought on behalf of the Company, (ii) any action asserting a claim for breach of a fiduciary duty owed by any director or officer or other employee of the Company to the Company or the Company’s shareholders, (iii) any action asserting a claim against the Company or any director or officer or other employee of the Company arising pursuant to any provision of the Florida Business Corporation Act or the articles of incorporation or the Company’s bylaws (in each case, as they may be amended from time to time), or (iv) any action asserting a claim against the Company or any director or officer or other employee of the Company governed by the internal affairs doctrine shall be the Federal District Court for the Middle District of Florida, Jacksonville Division (or, if such court does not have jurisdiction, a state court located within the State of Florida, County of Duval).

The proxy access right permits a shareholder who meets specified eligibility requirements to include director nominees in the Company’s proxy materials for annual meetings of its shareholders. To be eligible to use these proxy access provisions, a shareholder must, among other requirements:

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For purposes of the foregoing requirements, issued and outstanding common units of Regency Centers, L.P. (the “Partnership”), other than those owned by the Company, the Partnership or any of their directly or indirectly wholly owned subsidiaries, will be treated as issued and outstanding shares of common stock as such units are generally economically equivalent to, and exchangeable for, shares of common stock.

Additionally, all director nominees submitted through these provisions must be independent and meet specified additional criteria, and shareholders will not be entitled to utilize this proxy access right at an annual meeting if the Company receives notice through its traditional advanced notice bylaw provisions that a shareholder intends to nominate a director at such meeting. The maximum number of director nominees that may be submitted pursuant to these provisions may not exceed 25% of the number of directors then in office.

The foregoing proxy access right is subject to additional eligibility, procedural and disclosure requirements set forth in the bylaws.

The foregoing description of the amendments to the Amended and Restated Bylaws are qualified in its entirety by reference to a copy of the Amended and Restated Bylaws filed as Exhibit 3.1 to this Form 8-K, which is incorporated by reference herein.

On July 20, 2015, the Company issued a press release, which is furnished as Exhibit 99.1, announcing the information set forth above in Items 5.02(e) and 5.03.

(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.