Sec Form 4 Filing - Ajdler Arnaud @ Hill International, Inc. - 2018-12-27

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Ajdler Arnaud 2. Issuer Name and Ticker or Trading Symbol Hill International, Inc. [ HIL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O HILL INTERNATIONAL, INC., 2005 MARKET STREET, 17TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 12/27/2018 (Street) PHILADELPHIA, PA19103 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 12/27/2018 P 7,500 A $ 2.79 ( 1 ) 5,555,256 I By Engine Capital, L.P. ( 2 ) Common Stock 24,429 ( 3 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Repo rting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Ajdler Arnaud C/O HILL INTERNATIONAL, INC. 2005 MARKET STREET, 17TH FLOOR PHILADELPHIA, PA19103 X Signatures /s/ Arnaud Ajdler 12/31/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The price reported in Column 4 is a weighted average price from multiple transactions. The reporting person undertakes to provide to Hill International, Inc., any security holder of Hill International, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. ( 2 )The Reporting Person is the managing member of Engine Capital Management, L.P. ("Engine Management"), Engine Investments, LLC ("Engine Investments") and Engine Investments II, LLC ("Engine Investments II"). Engine Management is the investment manager of each of Engine Airflow Capital, L.P. ("Engine Airflow"), Engine Capital, L.P. ("Engine Capital"), and Engine Jet Capital, L.P. ("Engine Jet"). Engine Investments is the general partner of each of Engine Capital and Engine Jet, and Engine Investments II is the general partner of Engine Airflow. Following the transaction, Engine Airflow owns 465,064 shares, Engine Capital owns 2,779,054 shares and Engine Jet owns 2,201,138 shares of the Issuer's common stock. The Reporting Person disclaims beneficial ownership in such securities except to the extent of his pecuniary interest therein. ( 3 )Includes 24,429 deferred stock units (DSUs). Each DSU entitles the reporting person to receive one share of the Issuer's common stock following the Reporting Person's retirement or termination of service from the Issuer's Board of Directors.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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