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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No.          )

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One Commerce Square
2005 Market Street, 17th Floor
Philadelphia, Pennsylvania 19103

May 17, 2017November 5, 2018

Dear Fellow Stockholder:

You are cordially invited to attend the 20172018 Annual Meeting of Stockholders (the "Annual Meeting") of Hill International, Inc. (the "Company"). The meeting will be held at Two Commerce Square, 2001 Market Street, 2nd Floor, Philadelphia, Pennsylvania on Tuesday, June 27, 2017Thursday, December 6, 2018 at 11:00 a.m. Eastern Time.

The Board of Directors is recommending a highly qualified and experienced slate of director nominees for election to the Board of Directors at the Annual Meeting. At the Annual Meeting, we will ask you to: (1) elect two directors; (2) approve the Company's 2017 Equity Compensation Plan; (3) provide an advisory vote to approve the Company's named executive officer compensation; (4)(3) ratify the appointment of KPMGEisnerAmper LLP as the Company's independent registered public accounting firm; and (5)(4) take action upon any other business as may properly come before the Annual Meeting.

The accompanying materials include the Notice of Annual Meeting of Stockholders and Proxy Statement. The Proxy Statement describes the business that we will conduct at the Annual Meeting. It also provides information about us that you should consider when you vote your shares.

On behalf of the Board of Directors, we would like to express our appreciation for your continued interest in the affairs of our Company.

Sincerely,

Paul J. Evans,Raouf S. Ghali,
Interim Chief Executive Officer and President

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One Commerce Square
2005 Market Street, 17th Floor
Philadelphia, Pennsylvania 19103

NOTICE OF 20172018 ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD JUNE 27, 2017DECEMBER 6, 2018

To our Stockholders:

Hill International, Inc. (the "Company") will hold its 20172018 Annual Meeting of Stockholders (the "Annual Meeting") at Two Commerce Square, 2001 Market Street, 2nd Floor, Philadelphia, Pennsylvania 19103 on Tuesday, June 27, 2017,Thursday, December 6, 2018, at 11:00 a.m. Eastern Time, for the following purposes:

1.

To elect two directors of the Company;



2.

To approve the Company's 2017 Equity Compensation Plan;



3.

To provide an advisory vote to approve the Company's named executive officer compensation;



4.3.

To ratify the appointment of KPMGEisnerAmper LLP as the Company's independent registered public accounting firm for 2017;2018; and



5.4.

To transact such other business as may properly come before the meeting or any and all adjournments or postponements of the meeting.

Only holders of record of common stock of the Company at the close of business on April 28, 2017October 22, 2018 are entitled to notice of and to vote at the Annual Meeting and any adjournment or postponement thereof.

It is important that your shares be represented and voted at the meeting. If you are a stockholder of record and do not plan to attend the meeting, please mark, sign, date and promptly mail the enclosed proxy card in the enclosed postage-paid envelope. You may revoke your proxy at any time before its exercise at the meeting. If you do not hold your shares of record and you do not plan to attend the meeting, please follow the instructions provided by your broker, bank or other nominee to ensure that your shares are voted.

By Order of the Board of Directors,

William H. Dengler, Jr., Corporate Secretary

May 17, 2017November 5, 2018
Philadelphia, Pennsylvania

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This 20172018 Proxy Statement (the "Proxy Statement") is furnished in connection with the solicitation of proxies by Hill International, Inc. ("Hill" or the "Company") on behalf of the Board of Directors (the "Board") for the 20172018 Annual Meeting of Stockholders (the "Annual Meeting"), to be held on Tuesday, June 27, 2017,Thursday, December 6, 2018, and at any meeting following adjournment or postponement of the annual meeting. We are first mailing this Proxy Statement and proxy card (including voting instructions) on or about May 17, 2017,November 5, 2018, to persons who were stockholders at the close of business on April 28, 2017,October 22, 2018, the record date for the meeting. Also, this Proxy Statement contains certain information that the Securities and Exchange Commission (the "SEC") and the New York Stock Exchange (the "NYSE") require Hill to provide annually to stockholders.

The Annual Meeting is scheduled to begin at 11:00 a.m. Eastern Time on June 27, 2017December 6, 2018 at Two Commerce Square, 2001 Market Street, 2nd Floor, Philadelphia, Pennsylvania 19103. Stockholders will be admitted beginning at 10:30 a.m. Eastern Time. The Board has designated Paul J. EvansRaouf S. Ghali and William H. Dengler to vote the shares represented by proxies at the Annual Meeting in the matter indicated by the proxies.

Who Can Vote

You are entitled to vote at the annual meeting all shares of the Company's common stock that you held as of the close of business on April 28, 2017,October 22, 2018, the record date for voting at the Annual Meeting. On April 28, 2017,October 22, 2018, there were 51,878,21555,558,243 shares of common stock outstanding. In accordance with Delaware law, a list of stockholders entitled to vote at the meeting will be available at the meeting.

Determining the Number of Votes You Have

The enclosed proxy card indicates the number of shares of common stock that you own. Each share of common stock is entitled to one vote with respect to each matter properly brought before the meeting.

How to Vote If You Are a Stockholder of Record

By Mail — Stockholders may vote their shares by signing and dating the enclosed proxy card and returning it in the postage-paid envelope provided with this Proxy Statement. Proxy cards submitted by mail must be received by the time of the Annual Meeting for your shares to be voted.

At the Annual Meeting — Only our stockholders and invited guests may attend the Annual Meeting. Refer to "How to Attend the Annual Meeting" for further information regarding admission to the Annual Meeting.

You will need to bring picture identification to the meeting. If you own shares in street name (i.e., your shares are held in street name through a broker, bank, trustee or other nominee), please bring your most recent brokerage statement, along with picture identification, to the meeting. We will use your brokerage statement to verify your ownership of common stock and admit you to the meeting. Shares held in your name as the stockholder of record may be voted by you in person at the Annual Meeting. Shares held beneficially in street name may be voted by you in person at the Annual Meeting only if you obtain a legal proxy from the broker or other agent that holds your shares giving you the right to vote the shares and only if you bring such proxy to the Annual Meeting. If you vote by proxy and also

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attend the Annual Meeting, you do not need to vote again at the Annual Meeting unless you wish to change your vote. Even if you plan to attend the Annual Meeting, we strongly urge you to vote in advance by proxy by signing and dating the enclosed proxy card and returning it in the postage-paid envelope provided.

For the election of directors, you can specify whether your shares should be voted for all, some or none of the nominees for director listed. Our Board urges you to use the enclosed proxy card to vote based on its recommendations, including FOR ALL of the nominees for director listed, FOR the approval of the Company's 2017 Equity Incentive Plan, FOR the advisory vote to approve the Company's named executive officers and FOR the ratification of the appointment of KPMGEisnerAmper LLP as the Company's independent registered public accounting firm for 2017.2018.

If you submit a proxy to us without indicating instructions with respect to specific proposals, we will vote your shares consistent with the recommendations of our Board of Directors as stated in this Proxy Statement, specifically for all our nominees for director for the approval of the Company's 2017 Equity Compensation Plan and for the advisory approval of the Company's named executive officer compensation. If any other matters are properly presented at the Annual Meeting for consideration, then the persons named on your proxy will have discretion to vote for you on those matters. As of the date of the Notice of 20172018 Annual Meeting of Stockholders, we knew of no other matters to be presented at the Annual Meeting.

How to Vote If Your Shares Are Held in Street Name

If your brokerage firm, bank, broker-dealer or other similar organization is the holder of record of your shares (i.e., your shares are held in "street name"), you will receive voting instructions from the holder of record. You must follow these instructions in order for your shares to be voted. Your broker is required to vote those shares in accordance with your instructions. If you do not give instructions to your broker, your broker will not be able to vote your shares with respect to the election of directors (Proposal 1), the approval of the Company's 2017 Equity Compensation Plan (Proposal 2), or the advisory approval of the Company's named executive officer compensation (Proposal 3)2). Brokerage firms do, however, have the authority under applicable rules to vote shares on certain matters when their customers do not provide voting instructions, such as the ratification of the appointment of KPMGEisnerAmper LLP as the Company's independent registered public accounting firm for 20172018 (Proposal 4)3). We urge you to instruct your broker or other nominee how to vote your shares by following those instructions.

Voting by Employees Participating in 401(k) Plan

If you are an employee of the Company and participate in the Hill International Inc. 401(k) Retirement Savings Plan (the "Plan"), the enclosed voting instruction form indicates the aggregate number of shares of common stock credited to your account as of April 28, 2017,October 22, 2018, the record date for voting at the Annual Meeting. If you timely submit your voting instructions to the Plan's trustee (the "Trustee") by following the instructions on the enclosed voting instruction form, your shares will be voted as you have directed. If you do not provide the Trustee with voting instructions, the Trustee will vote your Plan shares in the same proportion as the shares for which the Trustee receives voting instructions from other participants in the Plan. The Trustee must receive your voting instructions no later than June 23, 2017.December 3, 2018. Please note that Plan participants may vote their shares through the Trustee only and accordingly may not vote their Plan shares in person at the Annual Meeting.

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Receipt of Multiple Proxy Cards

Many of our stockholders hold their shares in more than one account and may receive separate proxy cards or voting instruction forms for each of those accounts. To ensure that all of your shares are represented at the Annual Meeting, we recommend that you vote every proxy card you receive.

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Revocation of Proxies

You can change your vote or revoke your proxy at any time before it is exercised at the Annual Meeting by doing any of the following: (1) you can submit a valid proxy with a later date; (2) you can notify our Secretary in writing at Secretary, Hill International, Inc., One Commerce Square, 2005 Market Street, 17th Floor, Philadelphia, Pennsylvania 19103 that you have revoked your proxy; or (3) you can vote in person by written ballot at the Annual Meeting.

Required Vote

Proposal 1: Election of Directors.    Our Board of Directors has determined that this year's election will be considered uncontested, so majority voting will apply to the election of directors at the Annual Meeting. Nominees receiving a majority of votes cast for"for" their election will be elected as a director.director; the votes cast "for" a nominee must exceed the votes cast "withheld" for such nominee.

If you do not vote for a particular nominee, or if you indicate on your proxy card that you want to withhold authority to vote for a particular nominee, then your shares will not be voted for that nominee. If stockholders do not elect a nominee who is already serving as a director, Delaware law provides that the director would continue to serve on the Board as a "holdover director," rather than causing a vacancy, until a successor is duly elected or until the director resigns. In addition, if you hold shares of common stock through a broker-dealer, bank nominee, custodian or other securities intermediary, the intermediary will not vote those shares for the election of any nominee for director unless you give the intermediary specific voting instructions on a timely basis directing the intermediary to vote for such nominee. Abstentions and broker non-votes do not constitute a vote "for" or "withheld" as to a director.

Pursuant to our Amended and Restated Bylaws, written notice by stockholders of qualifying nominations for election to our Board of Directors must have been received by our Secretary by March 20, 2017.August 13, 2018. We did not receive any such nominations and no other nominations for election to our Board may be made by stockholders at the Annual Meeting.

If for some reason any of the Board's director nominees are unable to serve, the persons named as proxies may vote for a substitute nominee recommended by the Board and, unless you indicate otherwise on the proxy card, your shares will be voted in favor of the Board's remaining nominees. As of the date of the Notice of 20172018 Annual Meeting of Stockholders, we knew of no reason why any of the Board's nominees would be unable or for good cause unwilling to serve as a director if elected.

Proposal 2: Approval of the Company's 2017 Equity Compensation Plan.    The votes cast "for" this proposal must exceed the votes cast "against" such proposal for this proposal to pass. In addition, if you hold shares of common stock through a broker-dealer, bank nominee, custodian or other securities intermediary, the intermediary will not vote those shares either "for" or "against" the approval of the Company's 2017 Equity Compensation Plan unless you give the intermediary specific voting instructions on a timely basis directing the intermediary to vote. Abstentions and broker non-votes do not constitute a vote "for" or "against" this proposal and will be disregarded in the calculation of "votes cast."

Proposal 3: Advisory vote on the approval of the Company's named executive officer compensation.    The votes cast "for" this proposal must exceed the votes cast "against" such proposal for this proposal to pass. In addition, if you hold shares of common stock through a broker-dealer, bank nominee, custodian or other securities intermediary, the intermediary will not vote those shares either "for" or

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"against" "against" the approval of the Company's named executive officer compensation unless you give the intermediary specific voting instructions on a timely basis directing the intermediary to vote. Abstentions and broker non-votes do not constitute a vote "for" or "against" this proposal and will be disregarded in the calculation of "votes cast."

Proposal 4:3: Ratification of the appointment of KPMGEisnerAmper LLP as the Company's independent registered public accounting firm for 2017.2018.    The votes cast "for" this proposal must exceed the votes cast "against" such proposal for this proposal to pass. In addition, if you hold shares of common stock through a broker-dealer, bank nominee, custodian or other securities intermediary, the intermediary may exercise discretionary authority on those shares to vote either "for" or "against" the ratification of the appointment of KPMGEisnerAmper LLP as the Company's independent registered public accounting firm for 2017,

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2018, unless you give the intermediary specific voting instructions on a timely basis directing the intermediary to vote. Abstentions do not constitute a vote "for" or "against" this proposal and will be disregarded in the calculation of "votes cast."

Broker non-votes

A broker non-vote occurs when a beneficial owner of shares held by a broker, bank or other nominee fails to provide the record holder with specific instructions concerning how to vote on any "non-routine" matters brought to a vote at a stockholders meeting. Under the NYSE rules, "non-routine" matters include the election of directors (Proposal 1), the approval of the Company's 2017 Equity Compensation Plan (Proposal 2) and the vote, on an advisory basis, on the approval of the Company's named executive officer's compensation (Proposal 3)2). Under applicable rules, a brokerage firm has the authority to vote shares on certain matters when their customers do not provide voting instructions, such as the ratification of the appointment of KPMGEisnerAmper LLP as the Company's independent registered public accounting firm for 20172018 (Proposal 4)3).

If you hold your shares in street name, it is critical that you cast your vote by instructing your bank, broker or other nominee on how to vote if you want your vote to be counted at the Annual Meeting for Proposals 1 2 and 3.2. Otherwise, your bank, broker or other nominee will not be able to vote your shares on these "non-routine" matters.

How to Attend the Annual Meeting

Registered stockholders may be admitted to the meeting upon providing picture identification. If you own shares in street name (i.e., your shares are held in street name through a broker, bank, trustee or other nominee), please bring your most recent brokerage statement, along with picture identification, to the meeting. We will use your brokerage statement to verify your ownership of common stock and admit you to the meeting.

Please note that cameras, sound or video recording equipment, or other similar equipment, electronic devices, large bags or packages will not be permitted in the Annual Meeting.

Quorum

A quorum of stockholders is necessary to transact business at the 20172018 Annual Meeting. A quorum exists if the holders of at least a majority of the shares of common stock entitled to vote are present either in person or by proxy at the meeting. Abstentions and broker non-votes will be counted in determining whether a quorum exists.

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20172019 Stockholder Proposals

At each annual meeting, stockholders are asked to elect directors to serve on the Board. The Board or stockholders may submit other proposals to be included in the proxy statement. To be considered for inclusion in the 20182019 Annual Meeting Proxy Statement, stockholder proposals must meet the requirements of SEC Rule 14a-8 and must be received no later than December 29, 2017.July 8, 2019. After such date, any shareholder proposal will be considered untimely and may be excluded from consideration at the meeting. Our Amended and Restated Bylaws provide that a stockholder may otherwise propose business for consideration or nominate persons for election to the Board, in compliance with federal proxy rules, applicable state law and other legal requirements and without seeking to have the proposal or nomination included in our proxy statement. OurIf our 2019 Annual Meeting is held no more than 30 days prior to and no later than 70 days after the anniversary date of our 2018 Annual Meeting, our

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Amended and Restated Bylaws currently require that notice of such proposals or nominations for our 20182019 Annual Meeting be received by us during the period from February 27, 2018August 8, 2019 to March 29, 2018.September 6, 2019. Any such notice must satisfy the other requirements in our Amended and Restated Bylaws applicable to such proposals and nominations.

Householding Information

SEC regulations permit the Company to send a single set of proxy materials, which includes this Proxy Statement, the Annual Report to Stockholders and the Notice of Internet Availability of Proxy Materials, to two or more stockholders that share the same address. Each stockholder will continue to receive his or her own separate proxy card. Upon written or oral request, the Company will promptly deliver a separate set of proxy materials to a stockholder at a shared address that only received a single set of proxy materials for this year. If a stockholder would prefer to receive his or her own copy, please contact William H. Dengler, Jr., Corporate Secretary, at the Company's principal executive office: One Commerce Square, 2005 Market Street, 17th Floor, Philadelphia, PA 19103; or by email addressed to hil@openboard.info. Similarly, if a stockholder would like to receive his or her own set of the Company's proxy materials in future years or if a stockholder shares an address with another stockholder and both would like to receive only a single set of the Company's proxy materials in future years, please contact Mr. Dengler.

What am I being asked to vote on and what are the Board of Directors' recommendations?

The following table lists the proposals scheduled to be voted on, the vote required for approval of each proposal and the effect of abstentions and broker non-votes:

NO PERSON IS AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRESENTATION OTHER THAN THOSE CONTAINED IN THIS PROXY STATEMENT, AND, IF GIVEN OR MADE, SUCH INFORMATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED. UNDER NO CIRCUMSTANCES DOES THE DELIVERY OF THIS PROXY STATEMENT CREATE ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN OUR AFFAIRS SINCE THE DATE OF THIS PROXY STATEMENT.

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The Board is divided into three classes. One class is elected each year for a term of three years.

On May 2, 2017,Effective October 1, 2018, David L. Richter decided to resign from his position as Chief Executive Officer and as a memberSgro became Chairman of the Board and Arnaud Ajdler and James Chadwick were appointed to the Board. Mr. Ajdler's term will terminate at this year's annual meeting and Mr. Chadwick's term will terminate at the annual meeting in 2020.

On October 25, 2018, as part of Directorsa plan to restructure the Board following the appointment of Messrs. Ajdler and Chadwick as directors, (i) Camille Andrews, whose term as a director was due to expire at the 2018 annual meeting, agreed to resign as a director effective October 25, 2018, (ii) the Board appointed Ms. Andrews as a director to serve until the annual meeting of stockholders in 2019, and (iii) upon the recommendation of the Company, effective on May 3, 2017. Also effective May 3, 2017,Governance and Nominating Committee, the Board reduced its size from tennominated each of Mr. Ajdler and Raouf S. Ghali to nine members, the number of directors currently holding office.serve a three-year term expiring at our annual meeting in 2021.

Two directors will be elected at this Annual Meeting to serve for a three-year term expiring at our annual meeting in 2020.2021. Upon the recommendation of the Governance and Nominating Committee, the Board has renominated Alannominated Arnaud Ajdler and Raouf S. Fellheimer and Steven R. CurtsGhali to serve for terms expiring in 2020.2021.

The persons named in the proxy card will vote such proxy "for" the election of Messrs. Fellheimereach of Mr. Ajdler and CurtsMr. Ghali unless you indicate that your vote should be withheld. If elected, each of Messrs. FellheimerMr. Ajdler and CurtsMr. Ghali will continue in office until his successor has been duly elected and qualified, or until the earliest of his death, resignation, retirement or removal. Messrs. FellheimerEach of Mr. Ajdler and CurtsMr. Ghali have indicated to the Company that they will serve if elected and have consented to be named in this proxy. We do not anticipate that Messrs. Fellheimer and CurtsMr. Ajdler or Mr. Ghali will be unable to stand for election, but, if that happens, your proxy will be voted in favor of another person nominated by the Board upon the recommendation of the Governance and Nominating Committee.

OUR BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT OUR STOCKHOLDERS VOTE "FOR ALL" THE ELECTION OF MESSRS. FELLHEIMERMR. AJDLER AND CURTSMR. GHALI AS DIRECTORS.

STEVEN R. CURTSARNAUD AJDLER has been a director since October 2015. Since May 2014, he2018. Mr. Ajdler has served as the managing partner for Engine Capital L.P., a value-oriented investment firm, since 2013. Mr. Ajdler, who was a member of Hill's Board from June 2006 to June 2009, currently sits on the boards of Stewart Information Services Corporation (NYSE:STC) and StarTek, Inc. (NYSE:SRT). He earned a BS in Mechanical Engineering from the Free University of Brussels, Belgium, an MS in Aeronautics from the Massachusetts Institute of Technology (MIT), and an MBA from Harvard Business School. Age: 42.

RAOUF S. GHALI has been theour President and a member of our board since August 2016 and our Chief StrategyExecutive Officer and, since November 2016, he has been the Interim Chief Information Officer for American Express Global Business Travel.October 2018. Prior to that, he was aChief Operating Officer from January 2015 to October 2018, President of our Project Management Group (International) from January 2005 to January 2015, Senior Vice President with Dell, Inc.in charge of project management operations in Europe, North Africa and the Middle East from November 20092001 to December 2013. Before that,2004, and Vice President from 1993 to 2001. Prior to joining us, he worked for 20 years with Perot Systems Corp.Walt Disney Imagineering from 1988 to 1993. Mr. Ghali earned both a B.S. in numerous roles, including President of its Commercial Solutions Group, Vice President of Corporate Planningbusiness administration and Financial Operations,economics and Vice President of Finance. Mr. Curts received his B.B.Aan M.S. in accountingbusiness organizational management from Southern Methodist University. Among other things, Mr. Curts brings experience as a senior finance leader with executive roles encompassing financial operations, business development, treasury and corporate planning.  Age:  56.

ALAN S. FELLHEIMER has been a director since June 2006. He has been Chairman of the Philadelphia law firm of Fellheimer & Eichen LLP since January 2006. He was Chairman of the Board of the Pennsylvania Business Bank, a state-chartered bank, from 1998, when he founded the bank, until 2008 when the bank was sold. He also served as the bank's President and Chief Executive Officer from 1998 until 2006. From 1991 to 1998, Mr. Fellheimer was a Partner in the Philadelphia law firm of Fellheimer Eichen Braverman & Kaskey. During 1990, he was a Partner with the Philadelphia law firm of Spector Gadon & Rosen, P.C. From 1985 to 1990, Mr. Fellheimer was Chairman and Chief Executive Officer of Equimark Corp., then a New York Stock Exchange-listed bank holding company. He currently serves as a member of the Board of Trustees and Executive Committee of Gratz College, an emeritus member of the Board of Trustees of the Pennsylvania Ballet, a member of the President's Advisory Board of Temple University and a member of the Dean's Advisory Board of the School of Social Policy & Practice of the University of Pennsylvania. Mr. Fellheimer is a Trustee of the Law Foundation of Temple University and a Past Master, Past High Priest and Trustee of the Grand Lodge of Pennsylvania, AF&AM. Mr. Fellheimer earned his A.B. in liberal arts and his J.D.summa cum laudeLaVerne. Age: 56.

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from Temple University. He is a member of the New Jersey, New York and Pennsylvania bars. Mr. Fellheimer has significant banking expertise and brings to the Company experience in leadership positions with public and non-public entities.  Age:  74.

CAMILLE S. ANDREWS has been a director since June 2009. Since 1998, Ms. Andrews has been an Associate Dean, and since 1996 a member of the faculty, of Rutgers University School of Law at Camden. From 2007 to 2015, Ms. Andrews served as Counsel to Context Capital Partners, a private equity firm. Between 1986 and 1996, Ms. Andrews was a Partner with the law firm of Dilworth Paxson LLP, and between 2006 and 2008, she was Of Counsel to that firm, with expertise in antitrust, securities, class actions, derivative and shareholder suits, and other complex litigation matters. Ms. Andrews earned a B.A.magna cum laude in rhetoric and communication from the University of Pittsburgh and a J.D.with honors from Rutgers University School of Law at Camden, where she served on the Law Review. She was a member of the Board of Trustees for the Leap Academy Charter School in Camden, NJ from 2000 to 2007 and has served on a number of charitable boards, including the Walnut Street Theater, ACYO Charitable Foundation (a subsidiary of The Goldman Sachs Group, Inc.), New Jersey Child Cares, and the Philadelphia Zoo Chairman's Council. She has also served on the New Jersey Supreme Court Committee on Judicial Education. Ms. Andrews is admitted to practice law in New Jersey, Pennsylvania and before the U.S. Supreme Court. Ms. Andrews offers a wealth of legal expertise in commercial matters and her service on the boards of other organizations provides cross-board experience. Age: 57.58.

BRIAN W. CLYMER has been a director since June 2006. Mr. Clymer retired from Prudential Financial, Inc. where he was Senior Vice President of External Affairs from July 1997 to January 2013. Prior to Prudential, he served as New Jersey State Treasurer under Governor Christine Todd Whitman from 1994 to 1997. Prior to that, Mr. Clymer was President and Chief Executive Officer of Railway System Design, Inc. and Vice President of its parent company, Gannett Fleming, Inc., an engineering design firm, from 1993 to 1994. From 1989 to 1993, he served under President George H.W. Bush as Administrator of the U.S. Federal Transit Administration. Mr. Clymer has served on numerous Boards of Directors, including the New Jersey Sports and Exposition Authority, the New Jersey Casino Reinvestment Development Authority, the New Jersey Performing Arts Center, the Southeastern Pennsylvania Transportation Authority, the American Public Transit Association, Security First Bank, and Motor Coach Industries International, Inc., then a New York Stock Exchange-listed designer and manufacturer of buses and coaches. He also served on the Board of Directors of the New Jersey Alliance for Action from 1997 to 2014 and currently serves on the Board of the Independent College Fund of New Jersey as past Chairman. Mr. Clymer earned his B.S. in business and economics from Lehigh University and holds an honorary doctorate from Drexel University. He is a Certified Public Accountant in the Commonwealth of Pennsylvania. Mr. Clymer has spent almost 20 years in the field of public accounting and brings extensive experience as an executive and board member of various publicly and non-publicly held entities and offers deep knowledge of financial, economic and accounting matters.  Age:  70.

RAOUF S. GHALI has been our President and a member of our board since August 2016 and our Chief Operating Officer since January 2015. Prior to that, he was President of our Project Management Group (International) from January 2005 to January 2015, Senior Vice President in charge of project management operations in Europe, North Africa and the Middle East from 2001 to 2004, and Vice President from 1993 to 2001. Prior to joining us, he worked for Walt Disney Imagineering from 1988 to 1993. Mr. Ghali earned both a B.S. in business administration and economics and an M.S. in business organizational management from the University of LaVerne.  Age:  55.

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CRAIG L. MARTIN has been our Executive Chairman since May 3, 2017, our Chairman since October 2016 and a director since February 2016. In December 2014, Mr. Jacobs retired as the President and Chief Executive Officer of Jacobs Engineering Group, Inc. He became President in July 2002 and Chief Executive in April 2006. He also served as a member of Jacobs' Board of Directors from 2002 until his retirement. Prior to July 2002, he served in several positions, most recently as Executive Vice President of Global Sales and Marketing. Before joining Jacobs in 1994, he worked in various roles at CRSS International Inc. and Martin K. Eby Construction Co. He received his B.S. in civil engineering from the University of Kansas and his M.B.A. from the University of Denver. Mr. Martin has nearly 45 years of experience in the international engineering and construction industry.  Age:  67.

CHARLES M. GILLMAN has been a director since August 2016. Mr. Gillman has been the owner and Executive Managing Director of IDWR Multifamily Investment Office since 2013. From 2001 — 20132001-2013 he served as a Portfolio Manager for Nadel and Gussman, a holding company with a number of business interests. He currently serves on the Board of the following public companies: Digirad Corporation, Novation Companies, Solitron, and Points International. Previously, he served on the Board of the following public companies: Aetrium, Inc., InfuSystem Holdings, Inc., PMFG Inc., On Track Innovations Ltd., MRV Communications Inc., Littlefield, Hooper Holmes, and Compumed Inc. Age: 46.47.

PAUL J. EVANS has been a director since August 2016 and served as our Interim Chief Executive Officer sincefrom May 3, 2017 and a director since August 2016.to September 2018. From 2012 — 20152012-2015 Mr. Evans served as Vice President, Chief Financial Officer and Treasurer of MYR Group, and President of MYR Real Estate Company. From 2010 — 2011,2010-2011, Mr. Evans was Chief Executive Officer of Conex Energy Corporation, a privately-held company that developed renewable energy projects. From 2002 — 20092002-2009 he served as Treasurer and Corporate Officer of NorthWestern Energy, a multi-state utility that provides electricity and natural gas. Prior to NorthWestern Energy, Mr. Evans held corporate operational finance positions at Duke Energy North America, NRG Energy, and McLane Company, Inc. Mr. Evans is a Certified Public Accountant and holds a B.B.A. in Accounting from Stephen F. Austin State University and Masters of International Management from Thunderbird School of Global Management. Age: 49.50.

DAVID SGRO has been our Chairman since October 2018 and a director since August 2016. Mr. Sgro is a Senior Managing Director of Crescendo Partners, L.P. and has held various positions at Crescendo Partners since May 2005. He is also a Managing Member and Head of Research for Jamarant Capital, a private investment fund. Mr. Sgro also serves as an officer and is a former directorthe Chairman of HarmonyAllegro Merger Corp. (NASDAQ:HRMN), a Special Purpose Acquisition Company.ALGRU). Mr. Sgro has been a director and a former chairman of the audit committee of and Pangaea Logistics Solutions Ltd. (NASDAQ:PANL), a provider of seaborne dry bulk transportation services to industrial customers, since October 2014;2014, and a director and chairman of the audit committee of BSM Technologies Inc,. a provider of GPS fleet and asset management solutions,Inc., since June 2016; and2016. He was previously a director of NextDecade Corporation and Imvescor Restaurant Group Inc., a restaurant franchise and licensing company, since March 2016. He has also been a director, and chairman of the audit committee, of ComDev International, a TSX listed designer and manufacturer of space hardware subsystems, from April 2013 to February 2016; a director, and chairman of the audit committee of SAExploration Holdings, Inc. (NASDAQ:SAEX), a provider of seismic data services to the oil and gas industries, from June 2013 to July 2016; a director of Bridgewater Systems, Inc., a TSX listed telecommunications software company, from June 2008 to August 2011; and a director of Primoris Services Corporation (NASDAQ:PRIM), a specialty construction company, from July 2008 to May 2011.. Mr. Sgro also served as an officer and director of Harmony Merger Corp., from March 2015 until its merger with NextDecade in July

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2017; Quartet Merger Corp., from October 2013 until its merger with Pangaea Logistics Solutions Ltd. in October 2014,2014; and as an officer and director of Trio Merger Corp., from March 2011 until its merger with SAExploration Holdings in June 2013. Prior to

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joining Crescendo Partners, Mr. Sgro held analyst positions with Management Planning, Inc. and MPI Securities, Inc. Mr. Sgro is a Chartered Financial Analyst (CFA) Charterholder and holds a B.S. in Finance from The College of New Jersey and an M.B.A. from Columbia Business School. Age: 40.42

JAMES CHADWICK has been a director since October 2018. Mr. Chadwick has served as a Director of Alternative Investments with Ancora Advisors, LLC since 2014. He has served on the board of seven public companies. Prior to joining Ancora, Mr. Chadwick was the Managing Director of the private equity firm Harlingwood Equity Partners, LLC. Before joining Harlingwood, Mr. Chadwick founded and managed two hedge funds, PCI Partners LLC and Monarch Activist Partners LP. Mr. Chadwick earned a BA from the University of California Los Angeles. Age: 45.

ALAN S. FELLHEIMER has been a director since June 2006. He has been Chairman of the Philadelphia law firm of Fellheimer & Eichen LLP since January 2006. He was Chairman of the Board of the Pennsylvania Business Bank, a state-chartered bank, from 1998, when he founded the bank, until 2008 when the bank was sold. He also served as the bank's President and Chief Executive Officer from 1998 until 2006. From 1991 to 1998, Mr. Fellheimer was a Partner in the Philadelphia law firm of Fellheimer Eichen Braverman & Kaskey. During 1990, he was a Partner with the Philadelphia law firm of Spector Gadon & Rosen, P.C. From 1985 to 1990, Mr. Fellheimer was Chairman and Chief Executive Officer of Equimark Corp., then a New York Stock Exchange-listed bank holding company. He currently serves as a member of the Board of Trustees and Executive Committee of Gratz College, an emeritus member of the Board of Trustees of the Pennsylvania Ballet, a member of the President's Advisory Board of Temple University and a member of the Dean's Advisory Board of the School of Social Policy & Practice of the University of Pennsylvania. Mr. Fellheimer is a Trustee of the Law Foundation of Temple University and a Past Master, Past High Priest and Trustee of the Grand Lodge of Pennsylvania, AF&AM. Mr. Fellheimer earned his A.B. in liberal arts and his J.D.summa cum laude from Temple University. He is a member of the New Jersey, New York and Pennsylvania bars. Mr. Fellheimer has significant banking expertise and brings to the Company experience in leadership positions with public and non-public entities. Age: 75.

Pursuant to the Delaware General Corporation Law and the Company's Amended and Restated Bylaws, the Company's business, property and affairs are managed by or under the direction of the Board of Directors. Members of the Board are kept informed of the Company's business through discussions with the Chief Executive Officer and other officers, by reviewing materials provided to them and by participating in meetings of the Board and its committees. We currently have tennine members on our Board.

During 2016,2017, the Board held nineteensixteen meetings and the committees held a total of twenty-foursixteen meetings. Each director attended more than 75% of the total number of meetings of the Board of Directors and the Board committees of which he or she was a member during the period he or she served as a director in 2016.2017. Although we do not have a policy requiring all directors to attend annual meetings of stockholders, we expect all directors to attend, absent extenuating circumstances. Last year, our 2016 Annual MeetingEach of Stockholders was postponed but was later recognized to have convened by the Delaware Court of Chancery; accordingly, our directors did not attendattended our 20162017 Annual Meeting of Stockholders.

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Board Leadership Structure

Our Amended and Restated Bylaws provide that we will have a Chairman who will chair Board meetings and perform such other duties as set forth in our Amended and Restated Bylaws or as otherwise assigned to him by our Board. The Chairman and Chief Executive Officer may be the same person; however, our Board may separate these two positions if it deems it to be in the best interests of our Company and our stockholders to do so. Presently, the Chairman and Chief Executive Officer positions are held by two different individuals. On October 6, 2016, Mr. Craig L. Martin was appointed as Chairman. On May 3, 2017, Mr. Martin was appointed our Executive Chairman. Mr. Martin is not considered an officer or employee of the Company and will not receive any additional compensation in connection with this appointment. Also, on May 3, 2017, the Board established an Office of the Chairman which has such authority as may be delegated by the Board from time to time; as of the date of this proxy statement, the Office of the Chairman is comprised of our Executive Chairman, Craig L. Martin, our Interim Chief Executive Officer and director, Paul J. Evans, our President and Chief Operating Officer and a director, Raouf S. Ghali, and our Executive Vice President and General counsel, William H. Dengler, Jr. Considering the independence of our Executive Chairman (discussed in the section titled "Director Independence"), the Board of Directors amended the Company's bylaws on November 3, 2016 to remove provisions with respect to a lead independent director.

Role of the Board in Risk Oversight

The Board as a whole has responsibility for risk oversight, with reviews of certain areas conducted by relevant Board committees that report on their findings to the Board. The oversight responsibility of the Board and the Board committees is facilitated by management reporting processes designed to provide information to the Board concerning the identification, assessment and management of critical risks and management's risk mitigation strategies and practices. These areas of focus include operational, economic, competitive, financial (including accounting, reporting, credit, liquidity and tax), legal, regulatory, compliance, environmental, political and strategic risks. The full Board (or the appropriate Board committee), in concert with the appropriate management within the Company,

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reviews management reports to formulate risk identification, risk management and risk mitigation strategies. When a Board committee initially reviews management reports, the Chairman of the relevant Board committee briefs the full Board on the specifics of the matter at the next Board meeting. This process enables the Board to coordinate the risk oversight role, particularly with respect to risks spanning more than one operational area. The Compensation Committee reviews compensation policies to ensure that they do not, among other things, encourage unnecessary or excessive risk-taking.

Corporate Governance Guidelines

The Corporate Governance Guidelines adopted by the Board, which include guidelines for determining director independence, are published on the Company's website atwww.hillintl.com,, in the "Investors" section, and are available in print to any stockholder upon request. That section of the website makes available the Company's corporate governance materials, including Board committee charters. Those materials are also available in print to any stockholder upon request.

Committees of the Board of Directors

During 2016,2017, the Board had standing Audit, Compensation, and Governance and Nominating Committees. All members of each committee have been determined by the Board of Directors to be "independent" under applicable NYSE rules. In addition, the Board has determined that each member of the Audit Committee meets SEC independence requirements which require that members of the Audit Committee may not accept directly or indirectly any consulting, advisory or other compensatory fee from Hill or any of its subsidiaries other than their directors' compensation. The charter of each committee is available on our website atwww.hillintl.com,, in the "Investors" section.

Audit Committee

The Audit Committee currently consists of Brian W. Clymer (Chair), Alan S. Fellheimer and Charles M. Gillman. Mr. Gillman replaced Paul J. Evans as a member of the Audit Committee on May 3, 2017. The Board has determined that each member of the Audit Committee is financially literate. The Board has also determined that Brian W. Clymer possesses accounting or related financial management expertise within the meaning of the NYSE listing standards and qualifies as an "audit committee financial expert," as defined by the rules of the SEC.

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The Audit Committee assists the Board in fulfilling its oversight responsibilities by (a) reviewing the financial reports and other financial information provided by Hill to its stockholders, the SEC and others, (b) monitoring the Company's financial reporting processes and internal control systems, including the remediation of material weaknesses in internal control, (c) retaining Hill's independent registered public accounting firm, (d) overseeing the Company's independent registered public accounting firm and internal auditors and (e) monitoring the Company's compliance with its ethics policies and with applicable legal and regulatory requirements. The Audit Committee also reviews and approves any transactions between Hill and any related parties. During 2016,2017, the Audit Committee met eight times. The Audit Committee has been established in accordance with Section 3(a)(58)(A) of the Securities Exchange Act of 1934 (as amended, the "Exchange Act").

Compensation Committee

The Compensation Committee consists of Steven R. CurtsArnaud Ajdler (Chair), Alan S. Fellheimer and David Sgro. Mr. Fellheimer replaced Paul J. Evans asJames Chadwick. Effective October 1, 2018, (i) Steven Curts resigned from the Board and was no longer a member of the Compensation Committee on May 3, 2017.due to his resignation, (ii) David Sgro was no longer a member due to his election as Chairman of the Board, and (iii) Mr. Ajdler and Mr. Chadwick were appointed as members of the Compensation Committee. Each member of the Compensation Committee is a "non-employee director" as defined in Rule 16b-3 of the Exchange Act and an "outside director" for purposes of Section 162(m) of the Internal Revenue Code of 1986, as amended (the "Code").

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The Compensation Committee oversees Hill's executive compensation programs. The Compensation Committee reviews and recommends to the Board for approval the compensation arrangements for all of the Company's executive officers. During 2016,2017, the Compensation Committee met thirteenseven times. The processes of the Compensation Committee are described below in "Compensation Discussion & Analysis."

Governance and Nominating Committee

The Governance and Nominating Committee consists of Camille S. Andrews (Chair), James Chadwick and Charles M. GillmanGillman. Effective October 1, 2018, (i) David Sgro was no longer a member of the Governance and David Sgro.Nominating Committee due to his election as Chairman of the Board and (ii) Mr. Chadwick was appointed as a member of the Governance and Nominating Committee. The Governance and Nominating Committee oversees matters relating to the evaluation and recommendation to the Board of the persons to be nominated for election as directors at any meeting of stockholders, and the persons to be appointed by the Board to fill any vacancy on the Board.

The Governance and Nominating Committee is responsible for reviewing and assessing with the Board the appropriate skills, experience, and background sought of Board members in the context of our business and the then-current membership on the Board. This assessment includes a consideration of independence, diversity, age, skills, experience, and industry backgrounds in the context of the needs of the Board and the Company, as well as the ability of current and prospective directors to devote sufficient time to performing their duties in an effective manner. Although the Company does not have a formal policy with respect to diversity standards, as a matter of practice, the Governance and Nominating Committee considers matters commonly viewed as matters of diversity in the context of the Board as a whole and, in its effort to select a Board that it believes will best serve the interests of the Company and its stockholders, takes into account the personal characteristics and experience of current and prospective directors to facilitate Board deliberations that reflect a broad range of perspectives.

The Governance and Nominating Committee carefully considers all director candidates recommended by our stockholders, and the Governance and Nominating Committee does not and will not evaluate

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such candidate recommendations any differently from the way it evaluates other candidates. The Company's Amended and Restated Bylaws set forth minimum qualifications for an individual to serve as a director onof the Company. These minimum qualifications provide that no person shall qualify for service or serve as a director of the Company: (a) unless such person is in compliance with all applicable laws and regulatory requirements to which the Company's directors may be subject in connection with such person's service as a director, (b) if such person has been convicted in, or entered a plea of nolo contendere with respect to, a criminal proceeding involving fraud, misappropriation or other similar charge during the ten years preceding the date of election, or if such person has been found responsible for or admitted responsibility for fraud, misappropriation or other similar charge in any governmental investigation or proceeding or other civil judicial proceeding during the ten years preceding the date of election, or if such person has been found responsible for or admitted responsibility for any material violation of any foreign, federal or state securities law or federal commodities law during the ten years preceding the date of election, (c) if such person has been convicted of, or entered a plea of nolo contendere with respect to, any felony, (d) if such person serves on the board of directors of more than three other public companies, (e) if such person is a director, officer or holder of more than a five percent (5%) equity interest, directly or indirectly, in a business that competes, directly or indirectly, with the Company, (f) if such person has made or makes any contribution or expenditure in connection with the election of any candidate for political office, including any contribution to any committee supporting such a candidate or to a political party, in any jurisdiction which results in the Company becoming ineligible to conduct its business or any portion thereof, or (g) if such person has ever been the subject of a filing of personal bankruptcy in any jurisdiction, either voluntarily or involuntarily (and in the case of an involuntary filing, if such filing was not dismissed within 60 days) during the ten years preceding the applicable date of election.

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Any stockholder who wishes to recommend an individual as a potential nominee for election to the Board should submit such recommendation in writing by mail to Hill International, Inc., One Commerce Square, 2005 Market Street, 17th Floor, Philadelphia, Pennsylvania 19103, Attn: Chair of Governance and Nominating Committee, together with information regarding the experience, education and general background of the individual and a statement as to why the stockholder believes such individual to be an appropriate candidate for the Board of Directors of Hill. Such recommendation should be provided to Hill no later than the close of business on the 120th day prior to the one-year anniversary of the date the Company's proxy statement was released to stockholders in connection with the previous year's annual meeting. During 2016,2017, the Governance and Nominating Committee held three meetings.one meeting.

Majority Voting in Uncontested Elections of Directors

Last year, our Board recommended and the stockholders approved the adoption ofIn 2016, we adopted majority voting for uncontested elections of directors. Plurality voting continues to apply in contested elections. A contested election is one in which the number of nominees exceeds the number of directors to be elected, and other conditions are met. In an uncontested election, nominees will be elected directors if they receive a majority of the votes cast (i.e., the number of shares voted "for" a director must exceed the number of votes cast "withheld" from that director, without counting abstentions or broker non-votes); if a nominee is an incumbent director but is not elected, such director is required to tender his or her resignation to the Board promptly following the date of the certification of the election results. The Nominating and Governance Committee shall make a recommendation to the Board as to whether to accept or reject the tendered resignation, or whether other action should be taken. The Board shall act on the tendered resignation, taking into account the Nominating and Governance Committee's recommendation, and publicly disclose (by press release, filing with the SEC or other manner reasonably calculated to inform stockholders) its decision regarding the tendered resignation and the rationale behind the decision within 90 days from the date of the certification of the election results. In a contested election, the nominees who receive a plurality

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of the votes cast (i.e., more votes in favor of their election than other nominees) will be elected directors.

Communicating Concerns to Directors

The Company encourages all interested persons to communicate any concern that an officer, employee, director or representative of Hill may have engaged in illegal, dishonest or fraudulent activity, or may have violated Hill's Code of Ethics and Business Conduct. Such persons may report their concerns or other communications including suggestions or comments to the Board in one of the following ways: by mail sent to William H. Dengler, Jr., Corporate Secretary, at the Company's principal executive office: One Commerce Square, 2005 Market Street, 17th Floor, Philadelphia, Pennsylvania 19103; by telephone at (866) 352-2792; or by email addressed to hil@openboard.info. All such communications will be referred to Mr. Dengler who will circulate them to the members of the Board, or in the case of potential violations of the Code of Ethics and Business Conduct, to the Chairman of the Audit Committee. If the communication is directed to a particular director, Mr. Dengler will forward the communication to that director. The Board does not screen stockholder communications.

Code of Ethics

All directors, officers and employees of the Company are expected to act ethically at all times and in accordance with the policies comprising Hill's Code of Ethics and Business Conduct (the "Code") which is available on our website at www.hillintl.com, in the "Investor Relations" section, and is available in print to any stockholder upon request. Any waiver or any implicit waiver from a provision of the Code applicable to Hill's chief executive officer, chief financial officer, chief accounting officer

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or controller, or any amendment to the Code must be approved by the Board. We will disclose on our website amendments to, and, if any are granted, any such waiver of, the Code. Hill's Audit Committee is responsible for applying the Code to specific situations in which questions are presented to it and has the authority to interpret the Code in any particular situation. If, after investigating any potential breach of the Code reported to it, the Audit Committee determines (by majority decision) that a breach has occurred, it will inform the Board of Directors. Upon being notified that a breach has occurred, the Board (by majority decision) will take or authorize such disciplinary or preventive action as it deems appropriate, after consultation with the Audit Committee and/or the Company's General Counsel, up to and including dismissal or, in the event of criminal or other serious violations of law, notification of the SEC or other appropriate law enforcement authorities.

Director Independence

The standards applied by the Board in affirmatively determining whether a director is "independent," in compliance with the rules of the NYSE, generally provide that a director is not independent if:

(1)

the director is, or has been within the last three years, our employee, or an immediate family member (defined as including a person's spouse, parents, children, siblings, mothers-and fathers-in-law, sons- and daughters-in-law, brothers- and sisters-in-law, and anyone, other than domestic employees, who shares such person's home), is, or has been within the last three years, one of our executive officers;



(2)

the director has received, or has an immediate family member who has received, during any 12-month period within the last three years, more than $120,000 per year in direct compensation from us, other than director and committee fees and pension or other forms of deferred compensation for prior service (provided such compensation is not contingent in any way on continued service);

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(3)

(a) the director is a current partner or employee of a firm that is our internal or external auditor; (b) the director has an immediate family member who is a current partner of such a firm; (c) the director has an immediate family member who is a current employee of such a firm and who works on our audit; or (d) the director or an immediate family member was, within the last three years, a partner or employee of such a firm and personally worked on our audit within that time;



(4)

the director or an immediate family member is, or has been within the last three years, employed as an executive officer of another company where any of our present executive officers at the same time serves or served on that company's compensation committee; or



(5)

the director is a current employee, or an immediate family member is a current executive officer, of a company that has made payments to or received payments from us for property or services in an amount which, in any of the last three fiscal years, exceeds the greater of $1,000,000 or two percent of such other company's consolidated gross revenues.

In addition to these objective standards, the Board of Directors has adopted a general standard, also in compliance with NYSE rules, to the effect that no director qualifies as independent unless the Board of Directors affirmatively determines that the director has no material relationship with us. In making this determination, the Board considers all relevant facts and circumstances regarding any transactions, relationships and arrangements between Hill and the director, and also between Hill and any company or organization with which the director is affiliated. The Board of Directors has determined that our current independent directors are Arnaud Ajdler, Camille S. Andrews, Brian W. Clymer, Steven R. Curts, Alan S. Fellheimer, Charles M. Gillman, Craig L. Martin and David Sgro.

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Involvement in Certain Legal Proceedings

Charles M. Gillman is subject to an SEC administrative order, dated February 14, 2017 (Securities Exchange Act Release No. 80038), relating to alleged violations of Section 13(d) of the Securities Exchange Act of 1934 (the "Exchange Act") and the rules promulgated thereunder, including failing to disclose the members of a stockholder group, and further allegations that Mr. Gillman violated Section 16(a) of the Exchange Act and the rules promulgated thereunder, including failing to timely file initial statements of beneficial ownership on Form 3 and changes thereto on Form 4. Without admitting or denying any violations, Mr. Gillman agreed to cease and desist from committing or causing any violations of (i) Section 13(d) of the Exchange Act and Rules 13d-1 and 13d-2 promulgated thereunder and (ii) Section 16(a) of the Exchange Act and Rules 16a-2 and 16a-3 promulgated thereunder, and paid a $30,000 civil penalty to the SEC.

The Board of Directors has adopted, upon the recommendation of the Compensation Committee (the "Committee") and subject to stockholder approval, the Hill International, Inc. 2017 Equity Compensation Plan (the "Plan"), to provide a compensation program for those directors, officers, employees, consultants and advisors whose contributions are essential to the growth and success of the Company, by enabling them to participate in the long-term growth of the Company through stock ownership and equity-based incentives. In its recommendation, the Committee considered the Company's existing 2006 Employee Stock Option Plan, as amended, which only provides for the grant of options exercisable into the Company's common stock and does not allow the Committee to structure equity awards in a manner the Committee might deem more able to produce the desired results to enable the Company to attract, retain, motivate and provide additional incentive to certain directors, officers, employees, consultants and advisors. If the new Plan is approved, the Board will release all 2,547,615 shares which were available for future grants under the Company's 2006 Employee Stock Option Plan, the Company's 2009 Non-Employee Director Stock Grant Plan and the Company's 2007 Restricted Stock Grant Plan and shares will no longer be able to be granted under these prior plans. A copy of the Plan is attached to this proxy statement as Annex A.

Recommendation and Vote Required

Approval of the proposal to adopt the Plan will require the affirmative vote of the holders of a majority of the outstanding shares of our common stock represented in person or by proxy and entitled to vote at the meeting.

OUR BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT OUR STOCKHOLDERS VOTE "FOR" THE PROPOSAL TO APPROVE THE PLAN.

The full text of the Plan is included in this Proxy as Appendix A. All capitalized terms not defined herein shall have the meanings set forth in the Plan. The following summary of the Plan is qualified in its entirety by reference to the full text of the plan.

Purpose

The purpose of the Plan is to enable the Company to attract, retain, motivate and provide additional incentive to certain directors, officers, employees, consultants and advisors, whose contributions are essential to the growth and success of the Company, by enabling them to participate in the long-term

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growth of the Company through stock ownership and equity-based incentives. Upon review of the Company's other compensation plans, the Committee recognized the need to have an omnibus plan which would provide the Company more flexibility in structuring compensation awards to specific recipients.

Award Types

Awards under the Plan may be made in the form of Options (including Stock Appreciation Rights), Restricted Stock, Deferred Stock Units, Restricted Stock Units, Dividend Equivalent Rights and other forms of equity based Awards.

Shares and Units Subject to the Plan

The total number of Shares subject to Awards granted under the Plan (including securities convertible into or exchangeable for Shares), in the aggregate, may not exceed 5,135,943 Shares, each of which may be issued as Incentive Stock Options. The maximum number of Shares that may underlie Options granted in any calendar year to any Eligible Person other than any non-employee Director, shall not exceed 2,500,000 Shares. The maximum number of Shares that may underlie Awards, other than Options, granted in any calendar year to any Eligible Person other than any non-employee Director, shall not exceed 1,000,000 Shares. Awards granted to a non-employee director in any calendar year shall not exceed a value of Three Hundred Thousand Dollars ($300,000) as calculated on the date an Award is granted. Shares of Common Stock issued under the Plan may consist in whole or in part of authorized and unissued shares, shares purchased in the open market or otherwise, treasury shares, or any combination thereof, as the Board may from time to time determine. Any Shares that have been granted as Restricted Stock or that have been reserved for distribution in payment for Options, Restricted Stock Units, Deferred Stock Units or other equity-based Awards but are later forfeited or for any other reason are not payable under the Plan shall again be available for grant under the Plan. For purposes of clarification, (i) any Shares that are tendered as payment or withheld to cover taxes due on an Award shall not again be available for grant under the Plan, (ii) any Shares that are repurchased by the Company using Option exercise proceeds shall not again be available for grant under the Plan and (iii) stock-settled Stock Appreciation Rights ("SARs") shall be counted against the share reserve above on a gross basis, regardless of the number of Shares issued to settle the Award. Other than Awards granted to an individual as an inducement to be hired as an employee of the Company, any Awards granted under the Plan shall be subject to a one-year minimum vesting requirement.

Administration of Plan

The Plan shall be administered by the Board. Among other things, the Board shall have authority, subject to the terms of the Plan including, without limitation, the provisions governing participation in the Plan, to grant Awards, to determine the individuals to whom and the time or times at which Awards may be granted and to determine the terms and conditions of any Award granted under the Plan. Subject to the provisions of the Plan, the Board may solicit the recommendations of the Committee with respect to any of the foregoing, but shall not be bound to follow any such recommendations.

Subject to the provisions of the Plan, the Board shall have authority to adopt, alter and repeal such administrative rules, guidelines and practices governing the operation of the Plan as it shall from time to time consider advisable, to interpret the provisions of the Plan and any Award and to decide all disputes arising in connection with the Plan. The Board's decision and interpretations shall be final and

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binding. Any action of the Board with respect to the administration of the Plan shall be taken pursuant to a majority vote or by the unanimous written consent of its members.

The Board may employ such legal counsel, consultants and agents as it may deem desirable for the administration of the Plan and may rely upon any opinion received from any such counsel or consultant and any computation received from any such consultant or agent. The Board shall keep minutes of its actions under the Plan.

The Board shall have the authority to delegate all or any portion of the authority granted to it (consistent with applicable law) under the Plan or elsewhere under the Plan to the Committee. If such authority is so delegated by Board, the Committee shall have such rights and authority to make determinations and administer the Plan as are specified in the delegation of authority. To the extent that the Board delegates its authority as provided by the Plan, all references in the Plan to the Board's authority to grant Awards and make determinations with respect thereto shall be deemed to include the Committee.

The Award Agreement evidencing an Award under the Plan shall contain such other terms, provisions and conditions not inconsistent with the Plan as shall be determined by the Board. In the event that any Award Agreement or other agreement under the Plan provides (without regard to this sentence) for the obligation of the Company to purchase or repurchase Shares from a Participant or any other person, then, notwithstanding the provisions of the Award Agreement or such other agreement, such obligation shall not apply to the extent that the purchase or repurchase would not be permitted under applicable law. The Participant shall take whatever additional actions and execute whatever additional documents the Board may in its reasonable judgment deem necessary or advisable in order to carry out or effect one or more of the obligations or restrictions imposed on the Participant pursuant to the express provisions of the Plan and the Award Agreement.

Eligibility

All officers, employees, consultants and advisors of the Company who are from time to time responsible for the management, growth and protection of the business of the Company, and all directors of the Company, shall be eligible to participate in the Plan. The Participants under the Plan shall be selected from time to time by the Board, in its sole discretion, from among those eligible, and the Board shall determine in its sole discretion the numbers of shares to be covered by the Award or Awards granted to each Participant. Options intended to qualify as Incentive Stock Options shall be granted only to key employees while actually employed by the Company. non-employee Directors, consultants and advisors shall not be entitled to receive Incentive Stock Options under the Plan.

Performance Goals

The Board, in its discretion, may in the case of Awards intended to qualify for an exception from the limitation imposed by Section 162(m) of the Code, (i) establish one or more Performance Goals as a precondition to the issuance or vesting of Awards, and (ii) provide, in connection with the establishment of the Performance Goals, for predetermined Awards to those Participants (who continue to meet all applicable eligibility requirements) with respect to whom the applicable Performance Goals are satisfied. The Performance Goals shall be established in a timely fashion such that they are considered preestablished for purposes of the rules governing performance-based compensation under Section 162(m) of the Code. Prior to the award or vesting, as applicable, of affected Awards under the Plan, the Board shall have certified that any applicable Performance Goals, and other material terms of the Award, have been satisfied. Performance Goals which do not satisfy the foregoing provisions of this paragraph may be established by the Board with respect to Awards not intended to qualify for an exception from the limitations imposed by Section 162(m) of the Code.

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Tax Deductibility

The Plan is designed so that all qualified performance-based awards that are conditioned on performance goals as described above may be eligible to meet the requirements for qualified performance-based compensation under Section 162(m) of the Code and may be fully deductible. While the Committee believes it is important to preserve the deductibility of compensation under Section 162(m) of the Code generally, there is no guarantee that the performance-based compensation exemption would be available in any particular circumstance, and the Board and the Committee reserve the right to grant or approve awards or compensation that are non-deductible.

The provisions of Section 162(m) of the Code require, among other things, that the material terms of plans such as this Plan must be approved by a company's stockholders every five years in order for compensation awarded under such plan to qualify as "qualified performance-based."

Amendment of the Plan

The Board may amend the Plan as it shall deem advisable, except that no amendment may adversely affect a Participant with respect to an Award previously granted without such Participant's written consent unless such amendments are required in order to comply with applicable laws; provided, however, that the Plan may not be amended without stockholder approval in any case in which amendment in the absence of stockholder approval would cause the Plan to fail to comply with any applicable legal requirement or applicable exchange or similar rule.

Repricing and Buyout of Options

Without prior stockholder approval, the Board may not (a) reprice Options or SARs or (b) pay cash or issue new Options or SARs in exchange for the surrender and cancellation of any, or all, of a Participant's outstanding Options or SARs.

New Plan Benefits Table

Awards that will be made to the executive officers and directors pursuant to the Plan are within the discretion of the Committee, and the Committee has not yet made a determination of the amounts and/or types of such awards that will be granted going forward, other than as described herein.

2017 Equity Compensation Plan

With respect to other awards to be granted in the future under the 2017 Plan, it is not possible to determine at this time the exact benefits or amounts to be received under the 2017 Plan.

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Effective Date and Termination of Plan

If the Plan is approved, the effective date will be the date of the approval of this Proposal by the stockholders of the Company. The Plan shall terminate on, and no Award shall be granted under the Plan on or after, the 10-year anniversary of the effective date; provided, however, that the Board may amend, suspend or terminate the Plan or any portion thereof at any time, provided that no amendment shall be granted without shareholder approval if such approval is necessary to comply with any applicable tax laws or regulatory requirement. Notwithstanding the foregoing, a termination of the Plan that occurs after an Award is made shall not materially impair the rights of a Participant unless the Participant consents. The termination of the Plan shall not impair the power and authority of the Board with respect to an outstanding Award.

The foregoing description of thePlan is qualified in its entirety by reference to the full text of thePlan, which can be found in the accompanying Appendix A.

At the 2016 Annual Meeting, our stockholders recommended that our Board of Directors hold say-on-pay votes on an annual basis rather than every three years. As a result, ourOur stockholders have the opportunity to approve, on a nonbinding, advisory basis, the compensation of our named executive officers as disclosed in this proxy statement.on an annual basis. This proposal gives our stockholders the ability to express their views on the compensation of our named executive officers.officers as disclosed in this proxy statement.

In connection with this proposal, the Board of Directors encourages stockholders to review in detail the description of the compensation program for our named executive officers that is set forth in the section titled "Compensation Discussion and Analysis" below, as well as the information contained in the compensation tables and narrative discussion in this proxy statement.

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As described in more detail in the Compensation Discussion and Analysis section, the guiding principle of our compensation philosophy is that pay should be linked to performance and that the interests of our executives and stockholders should be aligned. Our compensation program is designed to provide significant upside and downside potential depending on actual results as compared to predetermined measures of success. A significant portion of our named executive officers' total direct compensation is directly contingent upon achieving specific short- and longer-term results that are important to our long-term success and ultimately growth in stockholder value. We supplement our pay-for-performance program with a number of compensation policies that are aligned with the long-term interests of the Company and its stockholders.

We are asking our stockholders to indicate their support for the compensation of our named executive officers as disclosed in this proxy statement by voting "FOR" the following resolution:

"RESOLVED, that the shareholders of Hill International, Inc. approve, on an advisory basis, the compensation paid to Hill International's named executive officers, as disclosed pursuant to Item 402 of Regulation S-K of the Securities Act of 1933, as amended, including the Compensation Discussion and Analysis, the compensation tables and the narrative discussion in Hill International's 20172018 Proxy Statement."

The approval of a majority of shares represented in person or by proxy at the Annual Meeting is required to approve this proposal. Because your vote is advisory, it will not be binding on the Board of Directors, the Compensation Committee or the Company. The Compensation Committee, however, will

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review the voting results and take them into consideration when making future decisions regarding the compensation of our named executive officers.

OUR BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT OUR
STOCKHOLDERS VOTE "FOR" THIS PROPOSAL.

As previously reported onEisnerAmper LLP ("EisnerAmper") served as the Company's Current Reportindependent registered public accounting firm for the fiscal years ended December 31, 2017 and 2016, however, as described below, the Company also engaged KPMG LLP to render services during the fiscal year ended December 31, 2017. The fees and expenses for services rendered in the past two fiscal years are set forth in the table below. The Audit Committee pre-approved all of these services.

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Change of Independent Public Accountants

On April 25,19, 2017, the Company dismissed EisnerAmper LLP ("EisnerAmper") as its independent registered public accounting firm on April 19, 2017.firm. The decision to change independent registered public accounting firms was approved by the Audit Committee of the Company's Board of Directors. Such dismissal will becomebecame effective upon the completion by EisnerAmper of its review of the unaudited quarterly financial statementstatements of the CompanyHill International, Inc. for the fiscal quarter ended March 31, 2017 and the Company's filing of the related Quarterly Report on Form 10-Q. After10-Q with the SEC on May 10, 2017.

Also on April 19, 2017, after reviewing proposals from several accounting firms, including EisnerAmper, the Audit Committee of the Company's Board of Directors of the Company selected KPMG LLP ("KPMG") to be appointed following the filing of the Form 10-Q related to the fiscal quarter ended March 31, 2017 to serve as the Company's independent registered public accounting firm for the fiscal year ended December 31, 2017. During the two fiscal years ended December 31, 2016, and the subsequent interim period through March 31, 2017, the Company did not consult with KPMG regarding any of the matters or events set forth in Item 304(a)(2)(i) and (ii) of Regulation S-K.

The audit report of EisnerAmper on the consolidated financial statements of Hill International, Inc. as of and for the years ended December 31, 2016 and 2015, did not contain any adverse opinion or disclaimer of opinion, nor were they qualified or modified as to uncertainty, audit scope, or accounting principles. The audit report of EisnerAmper LLP on the effectiveness of internal control over financial reporting for the Company as of December 31, 2016 and 2015 did conclude that internal controls over financial reporting were not effective due to identified material weaknesses.

During the two fiscal years ended December 31, 2016, and the subsequent interim period through March 31, 2017, there were no: (1) disagreements with EisnerAmper on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedures, which disagreements if not resolved to their satisfaction would have caused them to make reference in connection with their opinion to the subject matter of the disagreement, or (2) reportable events (as defined in Item 304(a)(1)(v) of Regulation S-K), except that EisnerAmper advised the Company it agreed with the Company that certain deficiencies in the Company's internal control over financial reporting discussed with the Company during EisnerAmper's audits of the Company's consolidated financial statements for the years ended December 31, 2016 and 2015 constituted material weaknesses.

On March 28, 2018, the Company dismissed KPMG as its independent registered public accounting firm. The decision to change independent registered public accounting firms was approved by the Audit Committee of the Company's Board of Directors (the "Audit Committee"). Also on March 28, 2018, the Audit Committee entered into an agreement with EisnerAmper to serve as the Company's independent registered public accounting firm. Such dismissal and appointment reflects the Audit Committee's belief that EisnerAmper, who served as the Company's independent public accounting firm during the restatement, will be able to complete the restatement as well as the audit of the Company's 2017 financial statements as expeditiously as possible. The Company consulted with EisnerAmper regarding the application of accounting principles in conjunction with the original audit and the restatement; however, the Company did not consult with EisnerAmper regarding any of the matters or events set forth in Item 304(a)(2)(ii) of Regulation S-K other than those related to the restatement.

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As disclosed in the Company's annual report on Form 10-K for the year ended December 31, 2017, management identified certain deficiencies that rose to the level of a material weakness related to (i) the estimation of the potential loss on the Company's accounts receivable, (ii) inadequate design or not having controls to accurately determine the Company's liability and ensure compliance with certain tax laws and employment regulations of the jurisdictions in which the Company operates, (iii) failure to maintain effective controls over the financial reporting process, including the application of relevant accounting standards due to an inappropriate complement of personnel with the necessary level of accounting knowledge, experience, and training in the application of US GAAP commensurate with its financial reporting requirements and the complexity of the Company's operations and transactions, (iv) failure to maintain effective controls over the accurate preparation, recording, and review of foreign currency related transactions in accordance with ASC 830, Foreign Currency Matters, (v) failure to maintain effective controls to ensure the accurate preparation and review of the cash flow statement in accordance with ASC 230, Statement of Cash Flows, (vi) failure to maintain effective policies, procedures, and controls to ensure that the revenue recognition accounting for certain customer contracts was performed in accordance with ASC 605-35, Revenue Recognition, and (vii) failure to maintain effective controls over its income tax provision and related balance sheet accounts (collectively, the "Material Weaknesses").

As a result of these Material Weaknesses, management concluded that, as of December 31, 2017, the Company's internal control over financial reporting was not effective.

The Audit Committee of the Company's Board of Directors discussed the Material Weaknesses with EisnerAmper.

The Company's management, with oversight from the Audit Committee of the Company's Board of Directors, is actively engaged in remediation efforts to address the Material Weaknesses. Management has taken and will take a number of actions to remediate the Material Weaknesses as are described in the Company's annual report on Form 10-K for the year ended December 31, 2017 which description is incorporated by reference herein.

When fully implemented and operational, the Company's management believes the Company's measures will remediate the Material Weaknesses identified and strengthen its internal control over financial reporting. The Company is committed to continuing to improve its internal control processes, and will continue to diligently and vigorously review its financial reporting controls and procedures. As the Company's management continues to evaluate and work to improve its internal control over financial reporting, the Company's management may determine to take additional measures to address the Material Weaknesses or determine to modify, or in appropriate circumstances not to complete, certain of the remediation measures described in the Company's annual report on Form 10-K for the year ended December 31, 2017.

Pre-Approval Policy of Audit Services and Permitted Non-Audit Services of Independent Auditors

The Audit Committee pre-approves all audit and permissible non-audit services provided by the independent registered public accounting firm. These services may include audit services, audit-related services, tax services and other services and are pre-approved in one of two methods. Under the first method, the engagement to render the services would be entered into pursuant to pre-approval policies and procedures established by the Audit Committee, provided (i) the policies and procedures are detailed as to the services to be performed, (ii) the Audit Committee is informed of each service, and (iii) such policies and procedures do not include delegation of the Audit Committee's responsibilities under the Exchange Act to the Company's management. Under the second method, the engagement to render the services would be presented to and pre-approved by the Audit Committee (subject to the de

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minimis exceptions for non-audit services described in Section 10A(i)(1)(B) of the Exchange Act that are approved by the Audit Committee prior to the completion of the audit). The Chairman of the Audit Committee will have the authority to grant pre-approvals of audit and permissible non-audit services by the independent auditors, provided that all pre-approvals by the Chairman must be presented to the full Audit Committee at its next scheduled meeting. The Company will provide for appropriate funding, as determined by the Audit Committee, for payment of compensation to the independent registered public accounting firm and to any consultants, experts or advisors engaged by the Audit Committee.

The Audit Committee oversees the Company's financial reporting process on behalf of, and reports to, the Board. The Audit Committee has oversight of: (a) the integrity of the Company's financial statements; (b) the Company's compliance with legal and regulatory requirements; (c) the qualifications and independence of the Company's registered independent public accounting firm; (d) the Company's systems of internal controls established for finance, accounting, legal compliance and ethics; (e) the performance of the Company's registered independent public accounting firm; and (f) the integrity of the financial reports and other financial information prepared by the Company for submission to any governmental or regulatory body or the public. A more complete description of the duties and responsibilities of the Audit Committee is set forth in the Audit Committee's charter, which has been adopted by the Board. A copy of the Audit Committee Charter can be found in the Company's website atwww.hillintl.com, in the "Investors" section.

Management of the Company has the primary responsibility for the financial reporting process (including establishing and maintaining adequate internal financial controls), for preparing the consolidated financial statements in accordance with U. S. generally accepted accounting principles, and for the report on the Company's internal control over financial reporting. EisnerAmper, the Company's independent registered public accounting firm for 2017, is responsible for auditing those financial statements and expressing an opinion as to their conformity with U.S. generally accepted accounting principles and on the effectiveness of the Company's internal control over financial reporting.

The Audit Committee has reviewed and discussed with management and EisnerAmper the audited financial statements for the year ended December 31, 2017 and EisnerAmper's evaluation of the Company's internal control over financial reporting. The Audit Committee has discussed with EisnerAmper the matters that are required to be discussed by Statement on Auditing Standards No. 61, Communication with the Audit Committees, as amended (AICPA, Professional Standards, Vol. 1, AU section 380), as adopted by the Public Company Accounting Oversight Board ("PCAOB") in Rule 3200T. EisnerAmper has provided to the Audit Committee the written disclosures and the letter required by applicable requirements of the PCAOB regarding the independent accountant's communications with the Audit Committee concerning independence, and the Audit Committee has discussed with EisnerAmper that firm's independence. The Audit Committee has reviewed and approved the compatibility of EisnerAmper providing both audit and non-audit services to the Company and its affiliates with EisnerAmper's independence. The Audit Committee has also reviewed and approved, among other things, the amount of fees paid to EisnerAmper for audit and non-audit services.

Based on the review and discussions referred to above, the Audit Committee recommended to the Company's Board of Directors that the audited financial statements for the year ended December 31,

¹

NTD: Consider whether to reference material weaknesses in internal control or the remediation of those weaknesses.

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2017 be included in the Company's Annual Report on Form 10-K for 2017 for filing with the Securities and Exchange Commission. This report is provided by the following independent directors, who comprise the Audit Committee:

Brian W. Clymer (Chairman)
Alan S. Fellheimer
Charles M. Gillman

On March 28, 2018, EisnerAmper LLP was engaged to audit the financial statements of the Company. The Board of Directors, upon recommendation of the Audit Committee, desires to continue the services of EisnerAmper LLP for the fiscal year ending December 31, 2017. The Audit Committee considers KPMG2018. Accordingly, the Board of Directors will recommend at the Annual Meeting that the stockholders ratify the appointment by the Board of Directors of EisnerAmper LLP to audit the financial statements of the Company for the current fiscal year ending December 31, 2018. Representatives of that firm are expected to be well-qualified for this engagement. Ifavailable at the Annual Meeting, shall have the opportunity to make a statement if they desire to do so, and are expected to be available to respond to appropriate questions. Although ratification by stockholders is not required by our Amended and Restated Bylaws or applicable law, the Board of Directors has determined that requesting ratification by stockholders of its selection of EisnerAmper LLP as our independent registered public accounting firm is a matter of good corporate practice. In the event the stockholders do not ratify the appointment of KPMG,EisnerAmper LLP, the Audit Committee will reconsider the appointment. Representatives from each of EisnerAmper and KPMGappointment will be presentreconsidered by the Board of Directors. Even if the selection is ratified, the Board of Directors, in its discretion, may change the appointment at any time during the Annual Meetingyear if it determines that such a change would be in the best interest of the Company and each will have the opportunity to make a statement, if he or she desires, and to respond to appropriate questions.its stockholders.

OUR BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT OUR
STOCKHOLDERS VOTE "FOR" THIS PROPOSAL.

Executive Summary

Our Compensation Philosophy and Guiding Principles

In support of our business and our long-term success, the Company's compensation program is designed to attract, motivate, reward and retain high-quality executives necessary to continually improve financial performance, achieve profitable growth and enhance stockholder value. To that end, our Compensation Committee (the "Committee") has developed a compensation philosophy designed to reflect the following principles:

•

There should be a strong link between pay and performance;



•

The interests of our executives should be aligned with those of our stockholders; and



•

Compensation programs should reinforce our business strategy, focus the executive team on priorities and ultimately drive growth in stockholder value.

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Named Executive Officers for 2017

•

Paul Evans, Interim Chief Executive Officer;



•

Marco Martinez, Senior Vice President and Interim Chief Financial Officer;



•

Raouf S. Ghali, President and Chief Operating Officer;



•

J. Charles Levergood, Senior Vice President of Business Development (Americas);



•

David L. Richter, former Chief Executive Officer;



•

John Fanelli III, former Executive Vice President and Chief Financial Officer; and



•

Mohammed Al Rais, former Regional President (Middle East), Project Management Group.

Please note that Messrs. Richter, Fanelli, Al Rais, and Martinez are no longer employees of the Company, effective May 3, 2017, November 10, 2017, April 19, 2018, and October 17, 2018, respectively. Terms of the Separation Agreements with Mr. Richter and Mr. Fanelli are set forth in the sections titled "Change in Chief Executive Officer" and "Change in Chief Financial Officer." Additionally, effective October 1, 2018, the Board appointed Mr. Ghali as the Company's Chief Executive Officer and Mr. Evans returned to his service as a director of the Company.

Change in Chief Executive Officer

On May 2, 2017, David L. Richter decided to resignresigned from his position as Chief Executive Officer and as a member of the Board of Directors of the Company, effective on May 3, 2017. In connection with Mr. Richter's resignation, the Company entered into a Separation Agreement which is described below in the section titled "Employment Agreement with our Former CEO."

Additionally, on May 3, 2017, Paul J. Evans was named Interim Chief Executive Officer of the Company. On May 10, 2017, the Board of Directors of the Company upon the recommendation of the Compensation Committee, approved the following compensation terms for Mr. Evans:

•

A monthly base salary in the amount of $60,000;



•o

A target incentive award at the rate of $50,000 per month of service (including any partial month), which will be paid to Mr. Evans at year end or upon completion of his service as Interim Chief Executive Officer and only upon the achievement of targets set by the Board based upon the following:



o

One third (¹/3) based on the retention of key employees of the Company as measured ondetermined by the last dayBoard of Mr. Evans' service as Interim Chief Executive Officer.Directors.



o

One third (¹/3) based on achieving a forecasted liquidity metric.



o•

One third (¹/3) based on achieving a cost savings annual run rate, excluding any one-time items.

the Company's common stock on the last trading day of the month. The aggregate number of shares earned bygranted to Mr. Evans will be delivered on the last day of Mr. Evans' service as Interim Chief Executive Officer.

Officer and will be fully vested.

•

Mr. Evans shall receive a monthly living expense before tax allowance of $5,000 while serving as Interim Chief Executive Officer.



•

Mr. Evans shall be entitled to all benefits of employment provided to other employees of the Company in executive positions.



•

Mr. Evans shall not be entitled to receive compensation for serving on the Board of Directors of the Company while serving as the Interim Chief Executive Officer.

In determining the recommendedrecommendation amounts and structure of Mr. Evans' compensation, the Compensation Committee relied upon information provided by its independent compensation consultant regarding the market median of the Company's peer group and made certain adjustments thereto.

Mr. Evans will continuecontinues to serve as a member of the Board, but will stephas stepped down from all standing Board committees during the term of his service as Interim Chief Executive Officer. Mr. Evans' Board and committee retainers will bewere prorated for 2017 such that he willwas only be paid such retainers for the

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portion of 2017 during which he iswas not serving as Interim Chief Executive Officer, and the amount of his annual director stock grant for 2017 will bewas similarly prorated.

Effective October 1, 2018, the Board appointed Mr. Ghali as the Company's Chief Executive Officer and Mr. Evans returned to his service as a director of the Company.

2016Change in Chief Financial Officer

On November 10, 2017, John Fanelli, III notified the Company of his decision to retire and resign, effective on that day, as Executive Vice President and Chief Financial Officer. In connection with Mr. Fanelli's resignation, the Company entered into a Separation Agreement which is described below in the section titled "Employment Agreement with our Former CFO."

Effective as of Mr. Fanelli's resignation, Marco A. Martinez commenced serving as Senior Vice President and Interim Chief Financial Officer of the Company. Mr. Martinez received an annualized salary of $420,000 and was eligible to participate in bonus and long-term incentive programs beginning in 2018. Effective October 17, 2018, Mr. Martinez was no longer an employee of the Company.

Effective as of Mr. Martinez's resignation, Gregory Wolf commenced serving as Interim Chief Financial Officer of the Company and is expected to serve in such capacity until a permanent Chief Financial Officer is appointed.

2017 Performance-Based Bonuses (Cash)

In 2016,2017, we adopted Annual Incentive Awards for our former CEO and our President and COO entirely based on achieving superior EPS results for the year with target annual incentive awards of $1,820,000 and $300,000, respectively. Target EPS performance was set based on projected revenue

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$1,050,000growth and $300,000, respectively. Target EPS performance was set at a premium over the 2016 operating budgetrelated profit from continuing operations and in excess of the prior year's actual EPS results. The overall performance/payout range for 20162017 was set as follows:

For our other NEOs, we set target annual incentive awards equal to 20% to 25% of total salary for each executive officer. The overall performance/payout relationship for other named executive officers is the same as for our former CEO and our President and COO as shown in the table above.

For 2016,2017, we set a challenging target EPS of $0.30 per share, with a threshold of $0.24 per share. We fell short of the threshold and, consistent with our pay-for-performance philosophy, no bonuses were earned or paid to our NEOs related to 2016 performance.

2016 Long-Term Incentive Awards (Equity)

The 2016 Long-Term Incentive Awards to our former CEO and our President and COO related to 2017 performance.

Pursuant to the terms of his employment, our Interim CEO is eligible to receive a monthly fixed dollar amount of $50,000 which will be paid annually or upon the completion of Mr. Evans' service as Interim CEO and upon the achievement of targets set by the Board. For 2017, Mr. Evans' aggregate target amount was $425,159. Please refer to the section titled "Change in Chief Executive Officer" for information regarding the bonus incentive awards established for our Interim CEO.

We established a bonus pool for our executive officers, including our NEOs other than our COO and President, Interim CEO, Interim CFO, our former CEO and Mr. Levergood, which is equal to ten percent (10%) of the after-tax profit of the Company in 2017 to be distributed in proportion to each bonus pool participant's base salary. No bonuses were earned or paid from the 2017 bonus pool; however, the Company may pay discretionary bonuses related to 2017 but, at this time, no discretionary bonuses have been approved.

2017 Long-Term Incentive Awards (Equity)

The Long-Term Incentive Awards granted to our NEOs in the form of "Premium Priced" stock options.2017 were comprised of:

•

FormerOur former CEO: was granted 250,000100,000 stock options with a premium exercise price of $4.00 and 250,000 options with$7.00, representing a 50.5% premium exercise price of $5.00, representing 22.3% and 52.9% premiums, respectively, over the $3.27$4.65 closing price of our common stock on the date of grant.



•

Our President and COO: was granted 250,000 stock options with a premium exercise price of $4.00, representing a 22.3% premium over the $3.27 closing price of our common stock on the date of grant.

Other named executive officers: granted stock options for between 25,000 to 75,000 shares with half of the options having an exercise price of $4.31, representing$4.65, the closingmarket price of our common stock on the date of grant, and half of the grant.

We awarded the options described above on March 8, 2017 and each had a 5 year vesting schedule and 7 year term.

Please refer to the section titled "Change in Chief Executive Officer" for information regarding the long-term incentive awards established for our former CEO and our President and COO on April 1, 2016 and to our other NEOs on June 13, 2016.Interim CEO.

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20162017 Compensation Governance Practices

We are committed to executive compensation practices that drive performance and that align the interests of our leadership team with the interests of our stockholders. We have implemented many best practices with respect to the compensation of our NEOs including:

1.

A significant portionUp to 68.4% of our executives' target compensation opportunity is related to short- and longer-term performance based upon and tied to pre-established performance goals and the performance of our share price;

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2.

Total direct compensation opportunity for all of our NEOs is targeted at the market median, except for our former Chief Executive Officer, whose compensation iswas subject to an employment agreement entered into in 2014 (see the section titled "Executive Officer Compensation — Employment Agreement with Our Former CEO");



3.

Worked withEngaged an independent compensation consultant;



4.

Maintain a clawback policy covering both cash- and equity-based incentives;



5.

"Double-trigger" severance payments for executive officers requiring both a change of control and termination of employment.employment; and



6.

Robust stock ownership guidelines (CEO at 6x salary).

Practices we avoid with respect to the compensation of our NEOs include:

1.

No tax gross ups forLimited perquisites provided to our executive officers;



2.

No excise tax gross-ups related to change-in-control severance benefits;



3.

No speculative trading of Company stock;



4.

No hedging transactions;



5.

No repricing of stock options; and



6.

No unapproved pledging of Company stock.

Shareholder Outreach

We conducted a nonbinding advisory vote on executive compensation at our 2017 Annual Meeting, which our stockholders voted should be held annually. At the 2017 Annual Meeting of Stockholders, 59.6% of the votes cast on the advisory vote on executive compensation proposal were in favor of our NEO compensation as disclosed in the 2017 proxy statement. The Committee reviewed these final vote results and determined that it should continue its review of our executive compensation programs to align with Company and stock price performance to meet shareholder expectations.

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We expect to continue meeting with many of our stockholders regarding executive and Board compensation throughout 20172018 to gather feedback and discuss further possible changes as we continue our strategic review of our compensation programs.

Actions Related to 20172018 Executive and Board Compensation

In addition to the significant actions taken in 2016 and prior,2017, the Committee has already implemented a number of additional changesdecisions for 20172018 executive and Board compensation based on the results of market compensation reviews prepared by Pay Governance, LLC (the Committee's independent consultant), the Company's performance in 20162017 and stockholder and proxy advisor feedback. These changes aredecisions were as follows:

1.

Continued our executive officer compensation philosophy to target aggregate total compensation of all executive officers at the 50th percentile of the market;



2.

No salary increases for NEOs in 2017;2018.



3.2.

Again establishedEstablished a bonus program for our former CEO and our President and COONEOs that is tightly tied to achieving superior EPS performance during 2017a balance of metrics aligned with features including the followingour 2018 financial and strategic priorities: (i) Earnings Before Interest, Taxes, Depreciation and Amortization ("EBITDA") performance; (ii) an increase in sales over 2018 budgeted amounts; and (iii) retention of certain key employees (additional details are provided in Part 3 of the Compensation Discussion and Analysis below). No bonus payout for a metric less than 80% of its respective target.



3.

Granted long-term incentive awards in the form of a fixed cash value to each of our NEOs, other than our Interim CEO, which will convert into restricted stock based

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•

2017 EPS goal has been set at a premium to our Board-approved budget; and

•

No bonus payout for actual EPS less than 80% of target.



4.

Established a discretionary bonus pool for our executive officers, including our other NEOs, which is equal to ten percent (10%) of

upon the after-tax profit ofclosing trade price on the date the Company in 2017 to be distributed in proportion to each bonus pool participant's base salarybecomes current on its SEC periodic reporting obligations (additional details are provided in Part 3 of the Compensation Discussion and Analysis below);



5.

2017 equity awards for our former CEO are 100% in the form of premium priced stock options. The premium exercise price for all 2017 stock options was set by the Board at $7.00, representing a 50.5% premium over the closing price of our stock on the date of grant (details are provided in Part 3 of the Compensation Discussionbelow and Analysis below);



6.

2017 equity awards for our NEOs other than our former CEO are in the form of market priced stock options; and



7.

The Board revised the compensation provided to our non-employee directors to $120,000 annually and comprised of $80,000 annual cash compensation, payable quarterly, and $40,000 in deferred stock units in the Company's common stock. The prior compensation provided to our non-employee directors was comprised of $120,000 in annual cash compensation and restricted stock and stock options. We changed to using deferred stock units due to the preferential tax benefits as compared to stock options. The revised compensation to our non-employee directors is below the market median (i.e., 50^th percentile) of comparable companies.



8.

The Board set compensation terms for our Interim CEO, Mr. Evans, as a blend of salary, incentive award and equity. Seesee the section entitled "Change in Chief Executive Officer" for further details regarding Mr. Evans' compensation.long-term incentive compensation).

4.

No change to the compensation paid to our non-employee directors.

COMPENSATION DISCUSSION AND ANALYSIS

This section discusses our executive compensation programs for 2016,2017, the compensation decisions made under those programs and the factors that were considered by the Committee in making those decisions. It focuses on the compensation for each of our NEOs for 2016:

•

David L. Richter, former Chief Executive Officer;



•

Raouf S. Ghali, President and Chief Operating Officer;



•

John Fanelli III, Executive Vice President and Chief Financial Officer;



•

Mohammed Al Rais, Regional President (Middle East), Project Management Group; and



•

Frederic Z. Samelian, former President, Construction Claims Group.

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Please note that Mr. Richter is no longer employed by the Company, effective May 3, 2017, and Mr. Samelian is no longer employed by the Company, effective January 2, 2017.

This Compensation Discussion and Analysis is divided into three parts:

Part 1 discusses our compensation practices and the compensation decisions for our NEOs.

Part 2 discusses our compensation framework in more detail, including how we apply our compensation philosophy and determine competitive positioning of our executive compensation and other policies.

Part 3 discusses certain actions taken by the Committee in 2017 regarding compensation decisions for our NEOs.

20162017 Compensation Governance Practices

We are committed to executive compensation practices that drive performance and that align the interests of our leadership team with the interests of our stockholders. We are considering the appropriateness of these and other policies and practices as part of our comprehensive executive

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compensation strategic review. Below is a summary of best practices that we have implemented and practices we avoid with respect to the compensation of our NEOs.

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20162017 Executive Compensation Elements

The following chart summarizes the key features of each element of our executive compensation program: cash (salary and annual bonus); equity (long-term incentive); retirement (401(k) Plan); and

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other compensation (perquisites). Each type is discussed in detail in the remainder of this Compensation Discussion and Analysis and the accompanying tables.

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Summary of Key 20162017 Compensation Decisions

The following highlights the Committee's key compensation decisions for 2016,2017, as reported in the section below titled "Executive Officer Compensation — Summary Compensation Table."

FormerInterim CEO Compensation

On December 31, 2014, David Richter became ourMay 3, 2017, Paul J. Evans was named Interim CEO andof the Company. On May 10, 2017, the Board of Directors of the Company entered into an employment agreement with him at that time. His employment agreement establishes his total directapproved the following compensation ("TDC") opportunity, consisting of base salary and annual and long-term incentive opportunities which, in the aggregate, must be not less than the 75th percentile of CEOs in our Selected Peer Group (as defined in Part 2 of the Compensation Discussion and Analysis below).terms for Mr. Richter's 2016 compensation opportunity was set as follows:Evans:

•

AnnualA monthly base salary was set at $1,545,000;in the amount of $60,000.



•

Annual bonusA target incentive award opportunity wasat the rate of $50,000 per month of service (including any partial month), which will be paid to Mr. Evans at year ends or upon completion of his service as Interim Chief Executive Officer and only upon the achievement of targets set at $1,050,000; andby the Board based upon the following:



o

One third (¹/3) based on the retention of key employees of the Company as measured on the last day of Mr. Evans' service as Interim Chief Executive Officer.



o

One third (¹/3) based on achieving a forecasted liquidity metric.



o

One third (¹/3) based on achieving a cost savings annual run rate, excluding any one-time items.



•

Long-term (equity) incentive establishedA monthly grant of Company stock valued at $80,000 per month during Mr. Evans' term of service as 500,000 premium pricedInterim Chief Executive Officer. At the end of each month during such period, Mr. Evans will be entitled to $80,000 worth of Company stock options with a fair value atbased on the grant date of $672,500.

As of May 3, 2017, Mr. Richter is no longer an employeeclosing price of the Company.

President and COO Compensation

On August 18, 2016, we entered into an employment agreement with our President and COO, Raouf S. Ghali, for a term of five years. Under this agreement, Mr. Ghali is to receive a base salary to be reviewed annually by the Committee. Mr. Ghali's 20162017 compensation opportunity was set as follows:

•

Annual base salary was set at $1,135,000 per annum;



•

Annual bonus target award opportunity was set at $300,000;



•

Long-term (equity) incentive established as 250,000 stock options (in equal numbers of market-priced and premium-priced)(market-priced) with a fair value at the grant date of $362,500.$512,500.

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Interim CFO Compensation

On November 10, 2017, Marco A. Martinez was named Interim CFO of the Company. The Board set Mr. Martinez's annual base salary at $420,000 per annum and he is eligible to participate in bonus and long-term incentive programs beginning in 2018.

Former CEO Compensation

On December 31, 2014, David Richter became our CEO and the Company entered into an employment agreement with him at that time. His employment agreement establishes his total direct compensation ("TDC") opportunity, consisting of base salary and annual and long-term incentive opportunities which, in the aggregate, must be not less than the 75th percentile of CEOs in our Selected Peer Group (as defined in Part 2 of the Compensation Discussion and Analysis below). Mr. Richter's 2017 compensation opportunity was set as follows:

•

Annual base salary was set at $1,545,000;



•

Annual bonus target award opportunity was set at $1,820,000; and



•

Long-term (equity) incentive established as 100,000 premium priced stock options with a fair value at the grant date of $163,000 with a premium price set at 50.5% above the fair market value closing price of Hill stock on the date of the grant.

As of May 3, 2017, Mr. Richter is no longer an employee of the Company. Pursuant to the terms of the Separation Agreement with Mr. Richter, the Company agreed, among other things, to pay Mr. Richter $3,300,000 in three annual payments of $1,100,000. Upon execution of the Separation Agreement, the Company is no longer obligated to provide any compensation or benefits to Mr. Richter under his prior employment agreement other than as set forth in the Separation Agreement. For further information regarding the Separation Agreement, please see the section entitled "Employment Agreement with Our Former CEO."

Compensation of Other NEOs

For the other NEOs, the Committee granted modest salary increases of approximately 3%, set an annualmade no adjustment to their respective salaries for 2017, established a bonus target opportunity of between 20%pool (as detailed below) and, 25% of each executive's base salaryfor Messrs. Al Rais and Fanelli, established long-term (equity) incentive comprised of market-priced stock options with an aggregate fair value at the grant date of $241,250.$200,000 each.

Pay Mix

One ofIn 2017, the Board established a discretionary bonus pool for our compensation objectivesexecutive officers, including our other NEOs, which is equal to emphasize variable, performance-based compensation over short- and longer-term time horizons and the creation of long-term stockholder value. To support this goal, a portion of each NEO's pay is awarded under our long-term incentive plan in the form of stock options. Nearly 21% of our former CEO's targeted TDC and approximately 20%ten percent (10%) of the targeted TDC forafter-tax profit of the Company in 2017 to be distributed in proportion to each bonus pool participant's base salary. Our Interim CEO and our President and COO only have the option to award either 100% of the participant's entitled proportion of the bonus pool or award no bonus to the participant. If our Interim CEO and our President and COO determine that a participant in the bonus pool will not receive a bonus, their potential share is based upon long-term value creation as measured by growthremoved from the pool, i.e., it is not shared among remaining participants. Given Hill's 2017 performance results, no bonus pool payments were made to any participant in our share price.the bonus pool; however, the Company may pay discretionary bonuses related to 2017 but, at this time, no discretionary bonuses have been approved.

Former CEO 2016 Total Direct Compensation		President and COO 2016 Total Direct Compensation

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20162017 NEO Base Salaries, Annual Incentive Target and Long-Term Incentive Expected Value

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1.    Interim CEO Bonus Plan Criteria and Rationale

The 2016 annualtarget incentive opportunitiesaward for our NEOs are based onInterim CEO is set at a monthly fixed dollar amount of $50,000 and will be paid upon the achievement of targets set by the Board annually or upon the completion of Mr. Evans' service as Interim CEO. For additional details regarding the targets set for Mr. Evans, see the section titled "Change in Chief Executive Officer."

2.    Target Annual Incentive Awards ("TAIA")

Only our financial performance as measured by EPS.former CEO and President and COO were eligible to receive TAIA.

In 2016,2017, as in past years, the Committee evaluated the continued usechoice of the target annual incentive award's ("TAIA")TAIA financial measuresmeasure(s) using the following principles:

•

Metrics that support achievement of an annual Board-approved budget;



•

Metrics that support profitable growth while preserving cash for longer-term investment;



•

Metrics that are clearly understood and can be affected by the performance of our executives and employees;



•

Metrics that are consistent with market practice and commonly used by analysts in assessing our performance; and



•

Metrics that over time, are consistent with the creation of long-term shareholder value.

Following this review, the Committee concluded that the continued use of EPS is afor 2017 was an appropriate and comprehensive measure of income and provides an emphasis on profitable growth while focusing managers on expense control.

Target Setting

The 20162017 target annual incentive awards for our former CEO and our President and COO were set as a fixed dollar amount ($1,050,0001,820,000 and $300,000, respectively) and for our other NEOs as a percentage of their respective annual base salary.. Target awards are reviewed annually to ensure alignment with our compensation philosophy.

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Variances from these target payout values are based upon Company performance against the pre-established EPS goals. The performance/payout relationship around targeted performance levels was set at the beginning of the performance year and reflected our expectation for the year that management should strive to achieve our plan and be held accountable with lower than target payouts if performance fell below plan.

Our 20162017 plan used the following performance and payout relationship:

Financial Results for TAIA Purposes

The Committee set the TAIA target based on its evaluation of the budget-based amount and its assessment that the target contained a sufficient degree of "stretch." This target, actual 20162017 performance and 20162017 TAIA bonus payouts for our NEOs are shown in the tables below.

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20162017 TAIA Performance Metrics, Weight and Achievement

20162017 TAIA Threshold, Target, Maximum and Actual Payouts

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3.    Discretionary Bonus Pool for Other NEOs

For our other NEOs, the Board established a bonus pool. See the section titled "Compensation of other NEOs" for additional details regarding the bonus pool.

4.    Executive Leadership Sales Incentive

Mr. Levergood is eligible to receive a bonus based on generating new sales for the Company: for every $1,000,000 of expected consulting fee revenue generated by Mr. Levergood in a calendar year, Mr. Levergood will receive a $2,000 bonus, up to a maximum of $100,000. For 2017, Mr. Levergood earned $100,000 related to this incentive. Mr. Levergood was also eligible to receive an additional bonus of $100,000 in the event that the Company achieves or exceeds its annual sales target.

Our Long-Term Equity Incentive Program

Plan Criteria and Rationale

Long-term incentive compensation for all our executive officers, including our NEOs, is entirely equity-based. Historically, we have delivered this compensation opportunity through the use of stock options.

Stock option awards are used to complement the TAIA financial metric focus and other annual incentive plan performance assessments by aligning the team around actions that will promote the long-term growth of our share price. OurHistorically, our options also have a five-year vesting schedule in order to promote retention of our leaders.

In this way, the combination of our TAIAannual incentive plan and optionslong-term equity awards balance the focus of our team in a coordinated way around short-term financial, strategic and longer-term share price performance, both of which are directly linked to value creation for stockholders.

Equity Award Grant Practices

The Committee's equity-based awards policy contains rules on determining the grant date of equity awards and the exercise price of any stock options, which must be at least equal to the fair market value of our stock on the grant date.

20162017 Long-Term Equity Awards

In 2016, long-term equity plan participants, including2017, certain of our NEOs received a grant of stock options.equity-based incentives.

The value and form of each NEO award was determined by the Committee after considering company performance, individual impact on our financial results, market norms and relative duties and responsibilities. The value of the grants made during 20162017 to our NEOs are shown in the following table.

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20162017 Long-Term Equity Award Value

Compensation Philosophy and Objectives

Our compensation philosophy is to provide competitive executive officer pay opportunities tied to our short-term and long-term success. This overriding pay-for-performance approach enables us to attract, motivate and retain the type of executive leadership that will help us achieve our strategic objectives and realize increased stockholder value. To reach these goals, we have adopted the following program objectives:

•

Link management compensation with the interests and experience of stockholders.



•

Support achievement of operating performance, strategic objectives and share price growth through variable compensation programs.



•

Be fair and market-competitive to assure access to needed talent and encourage retention.



•

Provide compensation opportunities that are consistent with each executive's responsibilities, experience and performance.



•

Design compensation incentive programs that promote a sensible risk/reward balance, and that do not encourage unnecessary or unreasonable risk-taking.



•

Use perquisites sparingly.

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Applying our Compensation Philosophy

We apply our compensation philosophy and objectives as follows:

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Competitive Positioning

In support of our compensation philosophy, we target the compensation values consistent with the markets with which we compete for executive talent, capital and business; forbusiness. For our former CEO, this market is defined as our Selected Peer Group.

The Selected Peer Group is composedas defined in his employment agreement. As our former CEO was no longer an employee of companies with size, industry, operational and client characteristics that are similar to Hill.

Generally, we use data drawn from this group as a reference whichthe Company, effective May 3, 2017, the Committee reviews competitive pay practices, design approaches and for pay-for-performance comparisons.

Where compensation data and practices aredid not available from companies withinre-evaluate the composition of the Selected Peer Group in 2017.

For NEOs other than our former CEO, the Committee also references broader survey sources which includereflecting the practices of other companies of comparable size, scope and complexity, with which we compete for talent.talent and as recommended by our independent compensation consultant. This approach provides the Committee with decision-quality data and context. The Committee annually evaluatescontext used in the review of competitive pay practices, design approaches and if appropriate, updates the composition of the Selected Peer Group and approach to collecting broader compensation benchmarking data. The 2016 Selected Peer Group consisted of the following companies:for pay-for-performance comparisons.

2016 Selected Peer Group

CRA International, Inc.    Exponent, Inc.    Huron Consulting Group, Inc.    Navigant Consulting, Inc.

For our other NEOs, we relied upon data samples and a market survey provided by our independent compensation consultant.

Setting Compensation Targets and Performance Goals

The Committee annually reviews the total compensation opportunity of each executive officer — i.e.officer-i.e., cash compensation (salary and target annual incentive opportunity) and long-term equity compensation (target long-term equity value).

The Committee, with periodic input from anits independent consultant, then sets the executive's compensation target for the current year. Salary adjustments, if any, typically become effective as of January 1 of each year or upon a promotion. The compensation proposal for our former CEOand interim CEOs and our President and COO is reviewed with and ratified by the independent directors of the Board in executive session.

In making its decisions, the Committee uses several resources and tools, including competitive market information and peer group compensation trends, broader survey sources, and the larger executive compensation environment.environment, governance norms and expectations and shareholder feedback.

For 2016,2017, the Committee set target performance levels for the financial objectives used in the Interim CEO Bonus Plan and TAIA and concluded that there was an appropriate correlation between payout and performance levels (at target, threshold and maximum) in light of the business environment, risks associated with achieving our five-year strategic plan and other factors.

Evaluating Performance

For our eligible NEOs, performance determination under the TAIA and our Bonus Pool was 100% based on financial metrics. The Committee also considers competitive market norms in making final compensation decisions.

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Role of the Compensation Committee and Management

The Committee reviews all of our compensation and benefit programs. As part of its review of these programs, the Committee evaluates the competitiveness of compensation and benefits packages offered to our named executive officers and other executive officers. In addition, the Committee reviews and approves our corporate incentives, goals and performance objectives as well as the incentives, goals and performance objectives we establish for individuals under our compensation and benefit programs. The Committee evaluates the level of achievement of the corporate incentives, goals and performance objectives set for individuals and, based on the level of achievement, approves any awards dependent on these criteria under our compensation and benefit programs.

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Consistent with prior years, as part of the executive compensation decisions made in 2016,2017, our former Chief Executive Officer and our President and Chief Operating Officer made recommendations to the Committee regarding the levels and elements of compensation for the named executive officers, other than themselves, as well as for other executive officers of the Company. The Committee also received a compensation analysis regarding our senior executive officers, including our NEOs, from its compensation consultant, Pay Governance LLC, an executive compensation advisory firm. After considering the analysis prepared by Pay Governance LLC and the recommendations of our former Chief Executive Officer and our President and Chief Operating Officer, the Committee determined its recommendations to the Board for the Board's approval of the compensation for our NEOs. In determining its recommendations to the Board, the Committee relied considerably on assessments by our former Chief Executive Officer and our President and Chief Operating Officer of the performance and contribution of the other named executive officers and utilized the advice of Pay Governance LLC primarily as an effective "market check" designed to assure that compensation for the other named executive officers would be appropriate in view of other compensation packages that may be offered by the Company's peers and other prospective employers of these executives.

Post-Employment Compensation Arrangements

Termination Payments

In the event of a change in control, we provide certain senior executive officers with benefits upon termination in various circumstances under our 2015 Senior Executive Retention Plan (the "2015 Retention Plan") and under our 2016 Executive Retention Plan (the "2016 Retention Plan" and, collectively with the 2015 Retention Plan, the "Retention Plans"). The Retention Plans provide change in control severance benefits only upon the occurrence of a "double-trigger" (change in control and termination of employment). Generally, the benefits under the 2015 Retention Plan provide for one year of salary and benefits continuation; the benefits under our 2016 Retention Plan provide for two years of salary upon termination following a change in control. For 2016, eachAs of our NEOs, except our former CEODecember 31, 2017, Messrs. Al Rais and our President and COO, wasGhali were eligible to receive benefits under the 2015 Retention Plan, however Mr. Ghali has an employment agreement (described below) which provides for increased compensatory benefits to Mr. Ghali in certain situations and, accordingly, Mr. Fanelli andGhali may not receive benefits under the 2015 Retention Plan if his employment agreement provides payment in such situation. As of December 31, 2017, Mr. Al Rais werewas eligible to receive benefits under the 2016 Retention Plan.

Under his employment agreement, Mr. Ghali is eligible to receive certain benefits if (i) his employment is terminated by the Company without cause, (ii) he terminates his employment for good reason or (iii) he terminates his employment within two years of a change in control of the Company. Generally, these benefits provide for the payment of a lump sum of $2,270,000 (two times his 20162017 salary) upon termination.

AsMessrs. Richter, Fanelli, Al Rais, and Martinez are no longer employees of the Company, effective May 3, 2017, Mr. Richter is no longer an employee of the Company.November 10, 2017, April 19, 2018, and October 17, 2018, respectively. We detail the compensation estimated to be paid to our NEOs under various termination circumstances as of December 31, 20162017 in

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the section below titled "Executive Officer Compensation — Potential Payments Upon Termination or Change in Control."

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Other Compensation Policies

Personal Benefits

We provide our NEOs with other benefits that we believe are reasonable and competitive so that we may attract and retain talented senior executives. In total, they represent a small percentage of each NEO's overall compensation and generally are identical to the benefits provided to all other Hill employees.

Policy on Hedging and Pledging

Our insider trading policy contains restrictions on certain transactions in Company stock by executive officers and directors. All trades by executive officers and directors must be pre-cleared. The executive officers and directors are prohibited from any trading in puts or calls, from engaging in short sales of Company stock or from hedging Company stock. Making pledges of Company stock or using it as loan collateral or as part of a margin account in the future is prohibited unless expressly approved by the Board.

Risk Considerations in Our Compensation Programs

The Committee has reviewed our compensation policies and practices for the Company's executive officers and concluded that any risks arising from these policies and programs are not reasonably likely to have a material adverse effect. The Committee believes that the mix and design of the elements of our compensation program combined with risk-mitigating features and policies such as stock ownership guidelines and appropriate oversight and governance are appropriate and encourage executive officers and key employees to strive to achieve goals that benefit the Company and our stockholders over the long term. Our compensation policies and procedures are applied uniformly to all eligible participants and when viewed in aggregate, our programs provide sufficient safeguards, balance and governance that does not encourage excessive risk-taking by our employees.

20172018 Committee Actions

The Committee continues the process of reviewing the Company's compensation philosophy and evaluating the design and performance of our executive compensation programs to ensure we have a program that aligns with governance and market best practices to the fullest extent possible while ensuring it is structured to best support achievement of our business strategy and human capital needs. As a result of this ongoing review and evaluation, the Committee has already taken the following actions at this point in 2017:2018:

No Salary Increases — Maintained salaries for named executive officers at 20162017 amounts; re-affirmed that there will be generally no or limited salary adjustments for this group in the near future.

20172018 TAIA Bonus Plan for our President and COO — Adopted 20172018 TAIA for our PresidentICEO and COO entirely based on achieving superior EPS resultsa blend of metrics linked to current Hill priorities: (i) Earnings Before Interest, Taxes, Depreciation and Amortization ("EBITDA") performance; (ii) sales versus 2018 budget; and (iii) key employee retention. Adopted 2018 TAIA for the year with an annualICFO based on achieving a blend of metrics linked to current Hill priorities: (i) EBITDA performance and (ii) sales versus 2018 budget. No bonus target award opportunitypayout for a metric less than 80% of $300,000. Target EPS performance has been set at a premium over the 2017 operatingits respective target.

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budget and in excess of last year's actual EPS results. The overall performance/payout range for 20172018 has been set as follows:

2017 Bonus Pool for other executive officers, including the other NEOs — Established a discretionary bonus pool for our executive officers, including our other NEOs, whichMr. Levergood is equaleligible to ten percent (10%) of the after-tax profit of the Company in 2017 to be distributed in proportion to each bonus pool participant's base salary. Our Interim CEO and our President and COO only have the option to award either 100% of the participant's entitled proportion of the bonus pool or award no bonus to the participant. Our Interim CEO and our President and COO do not have the option to award a percentage other than 0% or 100% to each participant. If our Interim CEO and our President and COO determine that a participant in the bonus pool will not receive a bonus their potential sharein 2018 based on generating new sales for the Company: for every $1,000,000 of expected consulting fee revenue generated by Mr. Levergood in the calendar year, Mr. Levergood is removed fromeligible to receive a $2,000 bonus, up to a maximum of $100,000. Mr. Levergood is also eligible to receive an additional bonus of $100,000 in the pool, i.e., it is not shared among remaining participants.event that the Company achieves or exceeds its annual sales target.

Premium-Priced Stock OptionEquity Grants — The 2017 Long-Term Incentive Awards to our former CEO wereGranted long-term incentive awards in the form of Premium-Priced stock options. Mr. Richter was granted 100,000 stock options with a premium exercise price of $7.00, representing a 50.5% premium over the $4.65 closing pricefixed cash value to each of our commonNEOs, other than our Interim CEO, which will convert into restricted stock based upon the closing trade price on the date of grant.the Company becomes current on its SEC periodic reporting obligations. The restricted stock awards will vest ratably on March 7, 2021, contingent on EPS performance against pre-set threshold, target and maximum EPS levels.

RevisedNo Changes to Director Compensation — Following a market review by our independent compensation consultant,Made no changes to the compensation providedpaid to our non-employee directors was revised to $120,0000 annually to better align with market median and is comprised of $80,000 annual cash compensation, payable quarterly, and $40,000 in deferred stock units in the Company's common stock. Also, the Board revised the compensation of the Chairman of the Board to receive an additional annual retainer of $60,000, payable as $30,000 in cash and $30,000 in the form of deferred stock units.for their service.

Compensation Committee Report

The Compensation Committee has reviewed and discussed the Compensation Discussion and Analysis set forth above with the Company's management. Based on such review and discussion, the Compensation Committee recommended to the Board, and the Board approved, the inclusion of the Compensation Discussion and Analysis in this Proxy Statement.

Compensation Committee

Steven R. Curts (Chairman)Arnaud Ajdler (Chair)
Paul J. Evans (prior member)James Chadwick
David SgroAlan S. Fellheimer

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Summary Compensation Table

The following table contains information concerning the annual compensation for our NEOs during 2017, 2016 2015 and 2014.2015.

Summary Compensation Table

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