13D Filing: Endicott Management and Washingtonfirst Bankshares Inc. (WFBI)

Page 11 of 11

Page 11 of 11 – SEC Filing

EXHIBIT 1

JOINT FILING AGREEMENT
PURSUANT TO RULE 13d-1(k)

The undersigned
acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent
amendments to this statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing
additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments,
and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible
for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason
to believe that such information is inaccurate.

DATE: May 25, 2017

ENDICOTT OPPORTUNITY PARTNERS III, L.P.
By: W.R. Endicott III, L.L.C., its general partner
/s/ Wayne K. Goldstein
Name: Wayne K. Goldstein
Title: Managing Member
W.R. ENDICOTT III, L.L.C.
/s/ Wayne K. Goldstein
Name: Wayne K. Goldstein
Title: Managing Member
ENDICOTT MANAGEMENT COMPANY
/s/ Wayne K. Goldstein
Name: Wayne K. Goldstein
Title: Authorized Signatory
/s/ Wayne K. Goldstein
WAYNE K. GOLDSTEIN
/s/ Robert I. Usdan
ROBERT I. USDAN

Follow Washingtonfirst Bankshares Inc. (NASDAQ:WFBI)

Page 11 of 11