8-K

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): November 16, 2007

HILL INTERNATIONAL, INC.

(Exact Name of Registrant as Specified in Charter)

Delaware	000-50781	20-0953973
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

303 Lippincott Centre, Marlton, NJ	08053
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s telephone number, including area code:(856) 810-6200

Arpeggio Acquisition Corporation

(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):

¨Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 3.03 Material Modification to Rights of Security Holders.

As indicated under Item 8.01 “Other Events,” Hill International, Inc. (the “Company”) announced that it is separating all of its issued and outstanding units, each of which consists of one share of common stock and two warrants. See Item 8.01 for additional information regarding the separation of the Company’s units.

Item 8.01 Other Events.

On November 16, 2007, the Company announced that it was effecting the mandatory separation of its issued and outstanding units, each of which consists of one share of common stock and two warrants.

Previously, on October 23, 2007, the Company announced that it notified the holders of its warrants and the holders of its units that it had called the warrants for redemption. The redemption date for the warrants is November 23, 2007. Holders of the warrants who do not exercise their warrants by the close of business on the redemption date will be paid $0.01 per warrant, and such warrants will be cancelled.

A copy of the press release announcing the separation of the units is attached as Exhibit 99.1 to this Form 8-K.

Item 9.01 Financial Statements and Exhibits.

(a) Financial statements of business acquired. None.

(b) Pro forma financial information. None.

(c) Shell Company Transactions. None.

(d) Exhibits.

Exhibit Number	Description
99.1	Press Release dated November 16, 2007.

2

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.

	HILL INTERNATIONAL, INC.
Date: November 16, 2007	By:	/s/ John Fanelli III
		Name: John Fanelli III
		Title:   Senior Vice President and     Chief Financial Officer

EX-99.1

Exhibit 99.1

Hill International, Inc.	The Equity Group Inc.
John P. Paolin	Devin Sullivan
Vice President of Marketing and Corporate Communications (856) 810-6210	Senior Vice President (212) 836-9608
johnpaolin@hillintl.com	dsullivan@equityny.com

FOR IMMEDIATE RELEASE

Hill International Separates All Issued and Outstanding Units

Marlton, NJ - November 16, 2007 -- Hill International (Nasdaq: HINT, HINTW, HINTU), the worldwide construction consulting firm, announced today that it is separating all of its outstanding units, which trade separately under the symbol HINTU.

Each unit consists of one share of the company's common stock and two of the company’s warrants. On October 23, 2007, Hill issued a notice of redemption of its warrants, with a redemption date of November 23, 2007. Until and through the close of business on the date of redemption, each warrant entitles the holder to purchase from Hill one share of the company's common stock at an exercise price of $5.00.

To exercise the company’s warrants, warrant holders must deliver their warrant certificate(s) together with the exercise price of $5.00 per warrant (payable to Hill International, Inc.) to the company's stock transfer agent, Continental Stock Transfer & Trust Co., 17 Battery Place, New York, New York 10004, (212) 845-3200. On the redemption date, warrant holders who fail to exercise will be paid the sum of $0.01 per warrant and their warrants will be cancelled.

The units were originally issued during the initial public offering of Arpeggio Acquisition Corp., a specified purpose acquisition corporation, in June 2004. Arpeggio Acquisition Corp. merged with Hill International, Inc. in June 2006.

The shares of common stock associated with the notice of redemption of Hill's warrants have been offered under the Company's registration statement, which was declared effective by the Securities and Exchange Commission. The offering of these securities is being made only by means of a prospectus supplement dated October 23, 2007 and related prospectus dated December 21, 2006. Copies of the prospectus supplement and related prospectus may be obtained from Continental Stock Transfer & Trust Co.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any state.

Hill International, with 1,500 employees in 70 offices worldwide, provides program management, project management, construction management, and construction claims services. Engineering News-Record magazine recently ranked Hill as the 10th largest construction management firm in the United States. For more information on Hill, please visit our website at www.hillintl.com.

Exhibit 99.1

This press release may include certain statements that fall within the definition of "forward-looking statements" under the Private Securities Litigation Reform Act of 1995. Any such statements are subject to risks and uncertainties, overall economic and market conditions, competitors' and clients' actions, and other conditions, which could cause actual results to differ materially from those anticipated, including those risks identified in Hill's filings with the Securities and Exchange Commission. Accordingly, such statements should be considered in light of these risks. Any prediction by Hill is only a statement of management's belief at the time the prediction is made. There can be no assurance that any prediction once made will continue thereafter to reflect management's belief, and Hill does not undertake to update publicly its predictions, whether as a result of new information, future events or otherwise.

(HINT-G)

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