EX-31 Rule13a-14(d)/15d-14(d) Certifications.

 

 

I, Anthony Sfarra,certify that:

 

1. I have reviewedthis report on Form 10-K and all reports on Form 10-D required to be filed inrespect of the period covered by this report on Form 10-K of the BANK 2017-BNK4(the "Exchange Act periodic reports");

 

2. Based on myknowledge, the Exchange Act periodic reports, taken as a whole, do not containany untrue statement of a material fact or omit to state a material factnecessary to make the statements made, in light of the circumstances underwhich such statements were made, not misleading with respect to the periodcovered by this report;

 

3. Based on myknowledge, all of the distribution, servicing and other information required tobe provided under Form 10-D for the period covered by this report is includedin the Exchange Act periodic reports;

 

4. Based on myknowledge and the servicer compliance statements required in this report underItem 1123 of Regulation AB, and except as disclosed in the Exchange Actperiodic reports, the servicers have fulfilled their obligations under theservicing agreements in all material respects; and

 

5. All of the reportson assessment of compliance with servicing criteria for asset-backed securitiesand their related attestation reports on assessment of compliance withservicing criteria for asset-backed securities required to be included in thisreport in accordance with Item 1122 of Regulation AB and Exchange Act Rules13a-18 and 15d-18 have been included as an exhibit to this report, except asotherwise disclosed in this report. Any material instances of noncompliancedescribed in such reports have been disclosed in this report on Form 10-K.

 

In giving the certificationsabove, I have reasonably relied on information provided to me by the followingunaffiliated parties:

 

Rialto CapitalAdvisors, LLC, as Special Servicer, Wilmington Trust, National Association, asTrustee, Pentalpha Surveillance LLC, as Operating Advisor, CoreLogic CommercialReal Estate Services, Inc., as Servicing Function Participant, National TaxSearch, LLC, as Servicing Function Participant, Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer for The SummitBirmingham Mortgage Loan, Wilmington Trust, National Association, as Trusteefor The Summit Birmingham Mortgage Loan, Park Bridge Lender Services LLC, asOperating Advisor for The Summit Birmingham Mortgage Loan, CoreLogic CommercialReal Estate Services, Inc., as Servicing Function Participant for The SummitBirmingham Mortgage Loan, National Tax Search, LLC, as Servicing FunctionParticipant for The Summit Birmingham Mortgage Loan, Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer for the JWMarriott Desert Springs Mortgage Loan, Wilmington Trust, National Association,as Trustee for the JW Marriott Desert Springs Mortgage Loan, Park Bridge LenderServices LLC, as Operating Advisor for the JW Marriott Desert Springs MortgageLoan, CoreLogic Commercial Real Estate Services, Inc., as Servicing FunctionParticipant for the JW Marriott Desert Springs Mortgage Loan, National TaxSearch, LLC, as Servicing Function Participant for the JW Marriott DesertSprings Mortgage Loan, Rialto Capital Advisors, LLC, as Special Servicer forthe Merrill Lynch Drive Mortgage Loan, Wilmington Trust, National Association,as Trustee for the Merrill Lynch Drive Mortgage Loan, Park Bridge LenderServices LLC, as Operating Advisor for the Merrill Lynch Drive Mortgage Loan,CoreLogic Commercial Real Estate Services, Inc., as Servicing FunctionParticipant for the Merrill Lynch Drive Mortgage Loan, National Tax Search,LLC, as Servicing Function Participant for the Merrill Lynch Drive MortgageLoan, C-III Asset Management LLC, as Special Servicer for The DavenportMortgage Loan, Wilmington Trust, National Association, as Trustee for TheDavenport Mortgage Loan, Trimont Real Estate Advisors, LLC, as OperatingAdvisor for The Davenport Mortgage Loan, CoreLogic Commercial Real EstateServices, Inc., as Servicing Function Participant for The Davenport MortgageLoan, National Tax Search, LLC, as Servicing Function Participant for TheDavenport Mortgage Loan, Rialto Capital Advisors, LLC, as Special Servicer forthe Key Center Cleveland Mortgage Loan, Deutsche Bank Trust Company Americas,as Trustee for the Key Center Cleveland Mortgage Loan, Citibank, N.A., asCertificate Administrator for the Key Center Cleveland Mortgage Loan, DeutscheBank Trust Company Americas, as Custodian for the Key Center Cleveland MortgageLoan, Park Bridge Lender Services LLC, as Operating Advisor for the Key CenterCleveland Mortgage Loan, CoreLogic Commercial Real Estate Services, Inc., asServicing Function Participant for the Key Center Cleveland Mortgage Loan,National Tax Search, LLC, as Servicing Function Participant for the Key CenterCleveland Mortgage Loan, Midland Loan Services, a Division of PNC Bank,National Association, as Primary Servicer for the Pentagon Center MortgageLoan, Midland Loan Services, a Division of PNC Bank, National Association, asSpecial Servicer for the Pentagon Center Mortgage Loan, and PentalphaSurveillance LLC, as Operating Advisor for the Pentagon Center Mortgage Loan.

 

 

 

Dated: March 21, 2019

 

 

/s/ Anthony Sfarra

 

 

President

(seniorofficer in charge of securitization of the depositor)