EX-31 Rule 13a-14(d)/15d-14(d) Certifications.

 

 

I, Anthony Sfarra, certify that:

 

1. I have reviewed this report on Form 10-K and all reports onForm 10-D required to be filed in respect of the period covered by this reporton Form 10-K of the BANK 2017-BNK4 (the "Exchange Act periodicreports");

 

2. Based on my knowledge, the Exchange Act periodic reports, takenas a whole, do not contain any untrue statement of a material fact or omit tostate a material fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading withrespect to the period covered by this report;

 

3. Based on my knowledge, all of the distribution, servicing andother information required to be provided under Form 10-D for the periodcovered by this report is included in the Exchange Act periodic reports;

 

4. Based on my knowledge and the servicer compliance statementsrequired in this report under Item 1123 of Regulation AB, and except as disclosedin the Exchange Act periodic reports, the servicers have fulfilled theirobligations under the servicing agreements in all material respects; and

 

5. All of the reports on assessment of compliance with servicingcriteria for asset-backed securities and their related attestation reports onassessment of compliance with servicing criteria for asset-backed securitiesrequired to be included in this report in accordance with Item 1122 ofRegulation AB and Exchange Act Rules 13a-18 and 15d-18 have been included as anexhibit to this report, except as otherwise disclosed in this report. Anymaterial instances of noncompliance described in such reports have beendisclosed in this report on Form 10-K.

 

In giving the certifications above, I have reasonably relied oninformation provided to me by the following unaffiliated parties:

 

Rialto Capital Advisors, LLC, as Special Servicer, WilmingtonTrust, National Association, as Trustee, Pentalpha Surveillance LLC, asOperating Advisor, CoreLogic Solutions, LLC, as Servicing Function Participant,Computershare Trust Company, National Association, as Servicing FunctionParticipant for the Certificate Administrator, Computershare Trust Company,National Association, as Servicing Function Participant for the Custodian,Rialto Capital Advisors, LLC, as Special Servicer for the JW Marriott DesertSprings Mortgage Loan, Wilmington Trust, National Association, as Trustee forthe JW Marriott Desert Springs Mortgage Loan, Park Bridge Lender Services LLC,as Operating Advisor for the JW Marriott Desert Springs Mortgage Loan,CoreLogic Solutions, LLC., as Servicing Function Participant for the JWMarriott Desert Springs Mortgage Loan, Computershare Trust Company, NationalAssociation, as Servicing Function Participant for the Custodian for the JWMarriott Desert Springs Mortgage Loan, Rialto Capital Advisors, LLC, as SpecialServicer for The Summit Birmingham Mortgage Loan, Wilmington Trust, NationalAssociation, as Trustee for The Summit Birmingham Mortgage Loan, Park Bridge LenderServices LLC, as Operating Advisor for The Summit Birmingham Mortgage Loan,CoreLogic Solutions, LLC., as Servicing Function Participant for The SummitBirmingham Mortgage Loan, Computershare Trust Company, National Association, asServicing Function Participant for the Custodian for The Summit BirminghamMortgage Loan, Rialto Capital Advisors, LLC, as Special Servicer for theMerrill Lynch Drive Mortgage Loan, Wilmington Trust, National Association, asTrustee for the Merrill Lynch Drive Mortgage Loan, Park Bridge Lender ServicesLLC, as Operating Advisor for the Merrill Lynch Drive Mortgage Loan, CoreLogicSolutions, LLC., as Servicing Function Participant for the Merrill Lynch DriveMortgage Loan, Computershare Trust Company, National Association, as ServicingFunction Participant for the Custodian for the Merrill Lynch Drive MortgageLoan, Greystone Servicing Company LLC (as successor to C-III Asset ManagementLLC), as Special Servicer for The Davenport Mortgage Loan, Wilmington Trust,National Association, as Trustee for The Davenport Mortgage Loan, Trimont RealEstate Advisors, LLC, as Operating Advisor for The Davenport Mortgage Loanprior to December 14, 2022, BellOak, LLC, as Operating Advisor for TheDavenport Mortgage Loan on and after December 14, 2022, CoreLogic Solutions,LLC, as Servicing Function Participant for The Davenport Mortgage Loan,Computershare Trust Company, National Association, as Servicing FunctionParticipant for the Custodian for The Davenport Mortgage Loan, Rialto Capital Advisors,LLC, as Special Servicer for the Key Center Cleveland Mortgage Loan, DeutscheBank Trust Company Americas, as Trustee for the Key Center Cleveland MortgageLoan, Deutsche Bank Trust Company Americas, as Custodian for the Key CenterCleveland Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisorfor the Key Center Cleveland Mortgage Loan, CoreLogic Solutions, LLC, asServicing Function Participant for the Key Center Cleveland Mortgage Loan,Computershare Trust Company, National Association, as Servicing FunctionParticipant for the Custodian for the Key Center Cleveland Mortgage Loan,Midland Loan Services, a Division of PNC Bank, National Association, as PrimaryServicer for the Pentagon Center Mortgage Loan, Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer for thePentagon Center Mortgage Loan, Pentalpha Surveillance LLC, as Operating Advisorfor the Pentagon Center Mortgage Loan, and Computershare Trust Company,National Association, as Servicing Function Participant for the Custodian forthe Pentagon Center Mortgage Loan.

 

 

 

Dated: March 9, 2023 

 

/s/ Anthony Sfarra

Anthony Sfarra 

President

(seniorofficer in charge of securitization of the depositor)