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

December 13, 2016

Date of report (Date of earliest event reported)

RENASANT CORPORATION

(Exact name of registrant as specified in its charter)

209 Troy Street, Tupelo, Mississippi 38804-4827

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (662) 680-1001

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 December 13, 2016, Renasant Corporation (the “Company”) issued a press release announcing the commencement of an underwritten public offering of approximately $65 million of its common stock, exclusive of the underwriters’ 30-day purchase option. A copy of the Company’s press release is attached hereto as Exhibit 99.1.

This Current Report on Form 8-K, including the Exhibit hereto, shall not constitute an offer to sell or the solicitation of an offer to buy any securities of the Company, which is being made only by means of a written prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, nor shall there be any sale of the Company’s securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such jurisdiction.

Forward-Looking Statements

This communication contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Congress passed the Private Securities Litigation Act of 1995 in an effort to encourage companies to provide information about their anticipated future financial performance. This act provides a safe harbor for such disclosure, which protects a company from unwarranted litigation if actual results are different from management expectations. This communication reflects the current views and estimates of future economic circumstances, industry conditions, company performance, and financial results of the management of the Company. These forward-looking statements are subject to a number of factors and uncertainties which could cause the Company’s actual results and experience to differ from the anticipated results and expectations expressed in such forward-looking statements, and such differences may be material. Forward-looking statements speak only as of the date they are made, and the Company does not assume any duty to update forward-looking statements, unless required by applicable law. Such forward-looking statements usually include words such as “expects,” “projects,” “proposes,” “anticipates,” “believes,” “intends,” “estimates,” “strategy,” “plan,” “potential,” “possible” and other similar expressions. These statements are based upon the current beliefs and expectations of the Company’s management and are inherently subject to significant business, economic and competitive risks and uncertainties, many of which are beyond their respective control. In addition, these forward-looking statements are subject to assumptions with respect to future business strategies and decisions that are subject to change. Actual results may differ from those indicated or implied in the forward-looking statements, and such differences may be material.

Important factors currently known to management that could cause actual results to differ materially from those in forward-looking statements include (1) the Company’s ability to efficiently integrate acquisitions into its operations, retain the customers of these businesses and grow the acquired operations; (2) the effect of economic conditions and interest rates on a national, regional or international basis; (3) the timing of the implementation of changes in operations to achieve enhanced earnings or effect cost savings; (4) competitive pressures in the consumer finance, commercial finance, insurance, financial services, asset management, retail banking, mortgage lending and auto lending industries; (5) the financial resources of, and products available to, competitors; (6) changes in laws and regulations, including changes in accounting standards; (7) changes in policy by regulatory agencies; (8) changes in the securities and foreign exchange markets; (9) the Company’s potential growth, including its entrance or expansion into new markets, and the need for sufficient capital to support that growth; (10) changes in the quality or composition of the Company’s loan or investment portfolios, including adverse developments in borrower industries or in the repayment ability of individual borrowers; (11) an insufficient allowance for loan losses as a result of inaccurate assumptions; (12) general economic, market or business conditions; (13) changes in demand for loan products and financial services; (14) concentration of credit exposure; (15) changes or the lack of changes in interest rates, yield curves and interest rate spread relationships; and (16) other circumstances, many of which are

beyond management’s control. Management undertakes no obligation to update or revise forward-looking statements to reflect changed assumptions, the occurrence of unanticipated events or changes to future operating results over time.

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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