13D Filing: Engine Capital, L.P. and Hill International Inc. (HIL)

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SIGNATURES

After reasonable inquiry and to the best
of his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete
and correct.

November 6, 2017

Engine Capital, L.P.

By: Engine Investments, LLC,

       General
Partner

By:  /s/ Arnaud Ajdler
Name:  Arnaud Ajdler
Title: Managing Member
Engine Jet Capital, L.P.

By: Engine Investments, LLC,

       General
Partner

By:  /s/ Arnaud Ajdler
Name:  Arnaud Ajdler
Title: Managing Member
Engine Capital Management, LLC
By:  /s/ Arnaud Ajdler
Name:  Arnaud Ajdler
Title: Managing Member
Engine Investments, LLC
By:  /s/ Arnaud Ajdler
Name:  Arnaud Ajdler
Title: Managing Member
/s/ Arnaud Ajdler
ARNAUD AJDLER
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