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Exhibit 10.6

May 20, 2016

CB Pharma Acquisition Corp.

3 Columbus Circle, 15th Floor

New York, New York 10019

EarlyBirdCapital, Inc.

366 Madison Avenue, 8^th Floor

New York, New York 10017

Gentlemen:

Based on the contemporaneous due execution and delivery of (i) the Agreement dated as of even date herewith among certain Sellers (as specified therein), EJF Opportunities, LLC, Stephen B. Pudles, Jose M. Aldeanueva, Jeffrey J. Gutovich Profit Sharing Plan and Barry Rodgers (collectively, the “Investors”), and CB Pharma Acquisition Corp. (“Company”) and (ii) the Insider Letters of the Investors, Edward J. Fred and Jeffrey J. Gutovich, each substantially in the form provided to each of the undersigned, each of the undersigned individuals hereby agrees that with regard to their respective letter agreements with the Company, dated December 12, 2014, the entire Section 12 is hereby deleted in its entirety. Additionally, upon approval of the matters set forth in Section 7.3 of the Agreement, Section 2(a) and the first sentence of Section 9 shall be deleted in their entirety.

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If the foregoing correctly sets forth our agreement, please so confirm by signing below in the space indicated.

[Insider Letter Amendment - Officers and Directors]