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): October 18, 2012

HILL INTERNATIONAL, INC.

(Exact Name of Registrant as Specified in Charter)

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

(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:

As previously disclosed, Hill International, Inc. (the “Company,” “we” or “our”) entered into a Credit Agreement, dated June 30, 2009 (as amended by the Third Amendment (as defined below), the “Credit Agreement”), with Bank of America, N.A., Capital One, N.A., The PrivateBank and Trust Company, PNC Bank National Association (the “Lenders”), and Bank of America, N.A., as Administrative Agent (the “Agent”) (collectively, the Company, the Lenders and the Agent are referred to as the “Parties”).

On October 18, 2012, the Parties entered into a Third Amendment to Credit Agreement (the “Third Amendment”), whereby the Parties amended the terms of the Credit Agreement.

Under the terms of the Third Amendment, the Parties, agreed, among other things, as follows:

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The Third Amendment also contains revised covenants with which the Company must comply, including its consolidated leverage ratio, the consolidated fixed charge coverage ratio, and the senior leverage ratio, as well as other covenants and certain restrictions relating to limitations on the ability of the Company or its subsidiaries to incur additional indebtedness, on the ability of the Company or its subsidiaries to make investments (including restrictions on the ability of the Company and its domestic subsidiaries to make loans to or investments in the Company’s foreign subsidiaries) and acquisitions, on the ability of the Company to accumulate cash, declare or pay cash dividends to its stockholders, and on the ability of the Company’s subsidiaries to declare or pay certain cash dividends.

The Third Amendment is filed as Exhibit 10.1 to this report and is incorporated herein in response to this Item. The description of the Third Amendment in response to this Item is qualified by reference to Exhibit 10.1 to this report.

In connection with the Third Amendment, the Company agreed to pay: (i) an amendment fee of 1.00% of the Lenders’ aggregate commitments as of October 18, 2012, payable in two parts: 0.5%, or $325,000, on October 18, 2012 and 0.5%, or $325,000, on March 31, 2014, however the March 31, 2014 payment will be waived in the event that prior to March 31, 2014 the Company has paid in full all Obligations (as defined in the Credit Agreement) under the Credit Agreement (other than certain contingent obligations) and all commitments have been terminated under the Credit Agreement; (ii) deferred fees of $1,215,000; (iii) an arrangement fee of $100,000; and (iv) accrued default interest of $$1,059,000. The Company also paid approximately $1,150,000 to the Agent as reimbursement for its out-of-pocket costs incurred in connection with the Third Amendment.

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Simultaneously with its entry into the Third Amendment, the Company entered into a Credit Agreement (the “Term Loan Agreement”) dated as of October 18, 2012 among the Company, Special Value Opportunities Fund, LLC, Special Value Expansion Fund, LLC, Tennenbaum Opportunities Partners V, LP, Tennenbaum Opportunities Fund VI, LLC (the “Term Loan Lenders”), and Obsidian Agency Services, Inc. (the “Term Loan Agent”). The Term Loan Lenders made term loans (collectively, the “Term Loan”) to the Company in the aggregate amount of $100,000,000 from which the Company received net proceeds of approximately $71,500,000 on October 18, 2012 (the “Closing Date”). The proceeds of the Term Loan were used for the partial prepayment of Working Capital Obligations (as defined in Term Loan Agreement) under the Credit Agreement (together with a concurrent permanent reduction to the commitment to make Working Capital Loans (as defined in the Term Loan Agreement) under the Credit Agreement from $100,000,000 to $65,000,000, as referenced above), and the payment of fees and expenses incurred in connection with the transactions contemplated by the Term Loan Agreement and the Third Amendment. Obligations (as defined in the Term Loan Agreement) under the Term Loan Agreement are collateralized by a second lien (subject to the first/prior lien of the Agent (for the ratable benefit of the Lenders) under the Credit Agreement and to other Permitted Liens (as defined in the Term Loan Agreement)) on substantially all of our assets, including, without limitation, accounts receivable, equipment, securities, financial assets and the proceeds of the foregoing, as well as by a pledge (subject to the first/prior lien of the Agent (for the ratable benefit of the Lenders) under the Credit Agreement and to other Permitted Liens) of 65% of the outstanding capital stock of our wholly-owned subsidiary, Hill International N.V. and of certain of our other foreign subsidiaries. The maturity date of the Term Loan is October 18, 2016.

Among other things, the Term Loan Agreement:

In connection with the Term Loan Agreement, the Company agreed to, in certain situations, allow certain Term Loan Lenders to appoint two non-voting board observers to the Company’s board of directors.

The amounts outstanding from time to time under the Term Loan will bear interest at a rate per annum equal to 7.50%; provided, however, such rate may be increased to 9.50% per annum if the Fixed Price Contracts (as defined under the Term Loan Agreement) or certain accounts receivable of the Company and its subsidiaries exceed a percentage specified in the Term Loan Agreement.

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The Term Loan Agreement is filed as Exhibit 10.3 to this report and is incorporated herein in response to this Item. The description of the Term Loan Agreement in response to this Item is qualified by reference to Exhibit 10.3 to this report.

Also, contemporaneous with its entry into the Term Loan Agreement, the Company entered into a Fee Letter. The Fee Letter requires the Company to pay to the Lenders an exit fee (the “Exit Fee”) in an amount equal to the Exit Fee Amount (as hereinafter defined), which fee shall be earned in full on the Closing Date and due and payable on the date the Term Loan is paid in full (the “Exit Date”). “Exit Fee Amount” means the amount, if any, when paid to the Term Loan Lenders on the Exit Date, that will result in the internal annual rate of return to the Term Loan Lenders with respect to the Term Loan (the “IRR”) on the Exit Date, as reasonably determined by the Term Loan Agent pursuant to the IRR Calculation (as hereinafter defined), being equal to, but no greater than 20% (the “Target IRR”); provided, that in no event shall the Exit Fee Amount be less than zero or greater than $11,790,000. “IRR Calculation” means that the IRR is to be calculated as the rate of return earned by the Term Loan Lenders on their initial investment in the Term Loan (to be calculated as the principal amount of the Term Loan less the Closing Fee (as defined in the Fee Letter)) through the Exit Date taking into account the payment by the Company to the Term Loan Lenders of all principal, interest and other payments to the Term Loan Lenders pursuant to the Term Loan Agreement.

The Fee Letter is filed as Exhibit 10.11 to this report and is incorporated herein in response to this Item. The description of the Fee Letter in response to this Item is qualified by reference to Exhibits 10.11 to this report.

Additionally, under the Third Amendment and the Term Loan Agreement, the Company is required to make the following mandatory prepayments/payments and/or commitment reductions in respect of the Company’s Indebtedness (as defined in the Credit Agreement and in the Term Loan Agreement) under the Credit Agreement and under the Term Loan Agreement:

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The information set forth above in Item 1.01 of this report is hereby incorporated by reference into this Item 2.03.

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On October 18, 2012, we issued a press release announcing our entry into the Third Amendment and the Term Loan Agreement. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is hereby incorporated by reference into this Item 7.01.

The information in Item 7.01 to this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act regardless of any general incorporation language in such filing.

On October 18, 2012, upon completion of the transactions described herein, the Company’s outstanding borrowings under the Credit Agreement amounted to $14,486,928 and total principal repayment obligations under the Term Loan Agreement amounted to $100,000,000. The Company cannot provide any assurance that the Company will be in compliance with the covenants and other provisions of the Credit Agreement, as amended, the Term Loan Agreement, or the Company’s other credit arrangements in the future or that, if the Company is not so compliant, the applicable lender(s) would agree to waive such default or to forbear from enforcing their rights against the Company, which would have a material adverse effect on the Company.

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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.

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