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

 

 

I, Oliver Nisenson, 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 CSAIL 2015-C4 Commercial Mortgage Trust (the "ExchangeAct periodic reports");

 

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 asdisclosed in the Exchange Act periodic reports, the servicers have fulfilledtheir obligations 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:

 

Wells Fargo Bank, National Association, as Master Servicer,Midland Loan Services, a Division of PNC Bank, National Association, as SpecialServicer, Wilmington Trust, National Association, as Trustee, Wells Fargo Bank,National Association, 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 on and after November 1, 2021, Computershare TrustCompany, National Association, as Servicing Function Participant for theCustodian on and after November 1, 2021, Midland Loan Services, a Division ofPNC Bank, National Association, as Primary Servicer for the Arizona GrandResort & 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 on and after November 1, 2021.

 

 

 

Dated:March16, 2022

 

 

/s/ Oliver Nisenson

Oliver Nisenson

Director

(seniorofficer in charge of securitization of the depositor)