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 13, 2016 (June 8, 2016)

GREIF, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (740) 549-6000

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 (see General Instruction A.2. below):

Section 2 – Financial Information

On June 8, 2016, Greif, Inc. (the “Company”) issued a press release (the “Earnings Release”) announcing the financial results for its second quarter ended April 30, 2016. The full text of the Earnings Release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

The Earnings Release included the following non-GAAP financial measures (the “non-GAAP Measures”):

The Earnings Release also included a forward-looking non-GAAP financial measure, 2016 Class A earnings per share excluding gains and losses on the sales of businesses, timberland and property, plant and equipment, acquisition costs and restructuring and impairment charges. No reconciliation of this forward-looking non-GAAP financial measure was included in the Earnings

Release because, due to the high variability and difficulty in making accurate forecasts and projections of some of the excluded information, together with some of the excluded information not being ascertainable or accessible, the Company is unable to quantify certain amounts that would be required to be included in the most directly comparable GAAP financial measure without unreasonable efforts.

Management of the Company uses the non-GAAP Measures to evaluate ongoing operations and believes that these non-GAAP Measures are useful to enable investors to perform meaningful comparisons of current and historical performance of the Company. Management of the Company also believes that the non-GAAP Measures provide a more stable platform on which to compare the historical performance of the Company than the most nearly equivalent GAAP data.

Section 7 – Regulation FD

On June 8, 2016, the Company released recorded remarks of management, made available on the Company’s website at www.greif.com/investors, regarding the Company’s financial results for its second quarter ended April 30, 2016. The file transcript of management’s recorded remarks is attached as Exhibit 99.2 to this Current Report on Form 8-K.

On June 9, 2016, management of the Company held a conference call with interested investors and financial analysts (the “Conference Call”) to discuss the Company’s financial results for its second quarter ended April 30, 2016. The file transcript of the Conference Call is attached as Exhibit 99.3 to this Current Report on Form 8-K.

Section 9 – Financial Statements and Exhibits

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.

EXHIBIT INDEX