SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

Current Report

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 4, 2014

General Finance Corporation

(Exact Name of Registrant as Specified in its Charter)

Delaware

(State or Other Jurisdiction

of Incorporation)

(626) 584-9722

(Registrant’s Telephone Number, Including Area Code)

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):

EXPLANATORY NOTES

Certain References

References in this Report to “we,” “us,” “our” or the “Company” refer to General Finance Corporation, a Delaware corporation (“GFN”), and its direct and indirect subsidiaries. These subsidiaries include GFN U.S. Australasia Holdings, Inc., a Delaware corporation (“GFN U.S.”); GFN North America Corp., a Delaware corporation (“GFNNA”); GFN Manufacturing Corporation, a Delaware corporation (“GFNMC”), and its subsidiary Southern Frac, LLC, a Texas limited liability company; Royal Wolf Holdings Limited (formerly GFN Australasia Holdings Pty Limited), an Australian corporation publicly traded on the Australian Securities Exchange (“RWH”); and its Australian and New Zealand subsidiaries (collectively, “Royal Wolf”); Pac-Van, Inc., an Indiana corporation, and its Canadian subsidiary, PV Acquisition Corp., an Alberta corporation, doing business as “Container King” (collectively, “Pac-Van”); and Lone Star Tank Rental Inc., a Delaware corporation.

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TABLE OF CONTENTS

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On April 7, 2014, we completed the acquisition of substantially all the assets and the assumption of certain of the liabilities of KHM Rentals, LLC, a Texas limited liability company and Lone Star Tank Rental, LP, a Texas limited partnership. Attached as Exhibit 99.1 hereto are the audited combined balance sheets of Lone Star Tank Rental, LP and KHM Rentals, LLC as of December 31, 2013 and 2012, and the related combined statements of operations for the years then ended.

Attached as Exhibit 99.2 hereto are the Unaudited Pro Forma Condensed Combined Balance Sheet as of December 31, 2013 and the Unaudited Pro Forma Condensed Combined Statements of Operations for the six months ended December 31, 2013 and the year ended June 30, 2013, giving effect to the business combination and certain other transactions and are based upon: (a) the audited combined balance sheets of Lone Star Tank Rental LP and KHM Rentals, LLC as of December 31, 2013 and 2012, and the related combined statements of operations for the years then ended, included in this Form 8-K/A; (b) our audited consolidated statements of operations for the year ended June 30, 2013, included in our Annual Report on Form 10-K for the year ended June 30, 2013; and (c) our unaudited condensed consolidated balance sheet as of December 31, 2013, and the related condensed consolidated statements of operations for the six months then ended, included in our Quarterly Report on Form 10-Q for the quarter ended December 31, 2013.

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SIGNATURE

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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