Manitex International, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

563420108

(CUSIP Number)

February 2, 2009

(Date of Event which Required Filing of this Statement)

x

Rule 13d-1(b)

o

Rule 13d-1(c)

o

Rule 13d-1(d)

1

NAME OF REPORTING PERSON

SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

Ironwood Investment Management, LLC

2

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP        (a) o

(b) x

3

SEC USE ONLY

4

CITIZENSHIP OR PLACE OF ORGANIZATION

Massachusetts

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5

SOLE VOTING POWER

1,601,620

6

SHARED VOTING POWER

0

7

SOLE DISPOSITIVE POWER

1,601,620

8

SHARED DISPOSITIVE POWER

0

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,601,620

10

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                 o

11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

15.2%

12

TYPE OF REPORTING PERSON

IA

Item 1.

(a).

Name of Issuer: Manitex International, Inc.

(b).

Address of Issuer's Principal Executive Offices:

7402 W. 100^th Place

Bridgeview, IL 60455

Item 2.

(a).

Name of Person Filing:

Ironwood Investment Management, LLC

(b).

Address of Principal Business Office or, if none, Residence:

21 Custom House Street, Suite 240

Boston, MA 02110

(c).

Citizenship or Place of Organization: Massachusetts

(d).

Title of Class of Securities: Common Stock

(e).

CUSIP Number: 563420108

Item 3.

If this statement is filed pursuant to sections 240.13d-1(b)

or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

o Broker or dealer registered under section 15 of

the Act (15 U.S.C. 78o);

(b)

o Bank as defined in section 3(a)(6) of the

Act (15 U.S.C. 78c);

(c)

o Insurance company as defined in section 3(a)(19)

of the Act (15 U.S.C. 78c.);

(d)

o Investment company registered under section 8 of

the Investment Company Act of 1940 (15 U.S.C.

80a-8);

(e)

x An investment adviser in accordance with

section 240.13d-1(b)(1)(ii)(E);

(f)

o An employee benefit plan or endowment fund in

accordance with section 240.13d-1(b)(1)(ii)

(F);

(g)

o A parent holding company or control person in

accordance with section 240.13d-1(b)(1)(ii)(G);

(h)

o A savings associations as defined in

section 3(b) of the Federal Deposit Insurance

Act (12 U.S.C. 1813);

(i)

o A church plan that is excluded from the

definition of an investment company under

section 3(c)(14) of the Investment Company Act

of 1940 (15 U.S.C. 80a-3);

(j)

o Group, in accordance with section 240.13d-1(b)(1)(ii)(J).

Item 4.

Ownership.

Provide the following information regarding the aggregate number and

percentage of the class of securities of the issuer identified in Item 1.

(a).

Amount beneficially owned:

1,601,620

(b).

Percent of class:

15.2%

(c).

Number of shares as to which the person has:

(1)

Sole power to vote or to direct the vote:

1,601,620

(2)

Shared power to vote or to direct the vote:

0

(3)

Sole power to dispose or to direct the disposition of:

1,601,620

(4)

Shared power to dispose or to direct the disposition of:

0

Item 5.

Ownership of Five Percent or Less of a Class:

Item 6.

Ownership of More Than Five Percent on Behalf of Another

Person:

Item 7.

Identification and Classification of Subsidiaries which Acquired

the Security Being Reported on by the Parent Holding Company:

Not Applicable

Item 8.

Identification and Classification of Members of the Group:

Item 9.

Notice of Dissolution of Group:

Item 10.

Certification:

After reasonable inquiry and to the best of my knowledge and belief, I

IRONWOOD INVESTMENT MANAGEMENT, LLC

Date:

March 10, 2009

By:

/s/ Charles J. Daly

Charles J. Daly, Chief Compliance Officer