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

 

 

I,Lawrence Chun, certify that:

 

1. Ihave reviewed this report on Form 10-K and all reports on Form 10-D required tobe filed in respect of the period covered by this report on Form 10-K of theCSAIL 2015-C4 Commercial Mortgage Trust (the "Exchange Act periodicreports");

 

2.Based on my knowledge, the Exchange Act periodic reports, taken as a whole, donot contain any untrue statement of a material fact or omit to state a materialfact necessary 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 my knowledge, all of the distribution, servicing and other informationrequired to be provided under Form 10-D for the period covered by this reportis included in the Exchange Act periodic reports;

 

4.Based on my knowledge and the servicer compliance statements required in thisreport under Item 1123 of Regulation AB, and except as disclosed in theExchange Act periodic reports, the servicers have fulfilled their obligationsunder the servicing agreements in all material respects; and

 

5. Allof the reports on assessment of compliance with servicing criteria forasset-backed securities and their related attestation reports on assessment ofcompliance with servicing criteria for asset-backed securities required to beincluded in this report in accordance with Item 1122 of Regulation AB andExchange Act Rules 13a-18 and 15d-18 have been included as an exhibit to thisreport, except as otherwise disclosed in this report. Any material instances ofnoncompliance described in such reports have been disclosed in this report onForm 10-K.

 

Ingiving the certifications above, I have reasonably relied on informationprovided to me by the following unaffiliated parties:

 

WellsFargo Bank, National Association, as Master Servicer, Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer, WilmingtonTrust, National Association, as Trustee, Wells Fargo Bank, NationalAssociation, as Certificate Administrator, Wells Fargo Bank, NationalAssociation, as Custodian, Pentalpha Surveillance LLC, as Operating Advisor,CoreLogic Solutions, LLC, as Servicing Function Participant, ComputershareTrust Company, National Association, as Servicing Function Participant for theCertificate Administrator, Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian, Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer for the ArizonaGrand Resort & Spa Mortgage Loan, Rialto Capital Advisors, LLC, as SpecialServicer for the Arizona Grand Resort & Spa Mortgage Loan, Wells FargoBank, National Association, as Trustee for the Arizona Grand Resort & SpaMortgage Loan, Wells Fargo Bank, National Association, as Custodian for theArizona Grand Resort & Spa Mortgage Loan, Pentalpha Surveillance LLC, asOperating Advisor for the Arizona Grand Resort & Spa Mortgage Loan, andComputershare Trust Company, National Association, as Servicing FunctionParticipant for the Custodian for the Arizona Grand Resort & Spa MortgageLoan.

 

 

 

Dated: March 15, 2024

 

 

/s/Lawrence Chun

LawrenceChun

AuthorizedSignatory

(seniorofficer in charge of securitization of the depositor)