UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

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 21, 2014

MANITEX INTERNATIONAL, INC.

(Exact Name of Registrant as Specified in Charter)

9725 Industrial Drive, Bridgeview, Illinois 60455

(Address of Principal Executive Offices) (Zip Code)

(708) 430-7500

(Registrant’s Telephone Number, Including Area Code)

(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 July 21, 2014, Manitex International, Inc. (the “Company”) entered into a series of agreements to acquire PM Group S.p.A, (“PM Group”), a manufacturer of truck mounted cranes, and its subsidiary Oil & Steel, S.p.A (“O&S”), both based in San Cesario sul Panaro, Modena, Italy (the “Transaction”). The Transaction is contingent on the approval by an Italian bankruptcy court of a Debt Restructuring Agreement, dated July 21, 2014, between PM Group, O&S, six Italian banks that are parties thereto (the “Banks”) and Loan Agency Services S.r.l., (the “Debt Restructuring Agreement”). Under the Debt Restructuring Agreement, PM Group and O&S debt to the Banks is reduced by approximately €49,000,000. Additionally, the Debt Restructuring Agreement establishes a new repayment schedule for the remaining term debt and converts €5,000,000 of interest bearing debt to non-interest bearing debt. The Company will pledge the PM Group stock it holds to secure PM Group’s obligations to the two banks that hold senior debt.

The stock of PM Group held by the Company will be pledged to secure the Company’s obligationa to the two senior banks.

In connection with the Transaction, the Company has entered into the following agreements, each dated as of July 21, 2014 (collectively, the “Transaction Documents”):

The Company also entered into a fee letter as described below.

The estimated total value of the consideration that the Company will pay to acquire PM Group and O&S consists of the following components:

The actual value of the foregoing consideration amount will be based on the applicable Euro/U.S. dollar exchange rate and closing price of the Company’s common stock on the date the transaction closes.

Summarized below are material terms of the Transaction Agreements:

Under the Debt Restructuring Agreement PM Group is obligated to make principal debt payments as follows:

The respective descriptions of the Transaction Agreements set forth herein do not purport to be complete and are qualified in their entirety by reference to the full text of such documents, which are attached as Exhibits 10.1, 10.2, 10.3, 10.4 and 10.5 to this Current Report on Form 8-K and incorporated herein by this reference.

A copy of the press release issued by the Company on July 21, 2014 announcing the Transaction is filed as Exhibit 99.1 to this Current Report on Form 8-K. The Company also posted presentation slides dated July 21, 2014 (Exhibit 99.2) that were used during a conference call and webcast which took place on Monday July 21, 2104.

Both Exhibits can be accessed from the Investor Relations section of the Company’s website at www.ManitexInternational.com.

Item 9.01. Financial Statements and Exhibits.

See the Exhibit Index set forth below for a list of exhibits included with this Current Report on Form 8-K.

SIGNATURE

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

Date: July 25, 2014

EXHIBIT INDEX