**UNITED STATESSECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 10-K**

(Mark One)

**x****  ANNUAL REPORT PURSUANT TO SECTION13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**For the fiscal year ended December 31, 2019or**

**o**** ****TRANSITIONREPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**For the transition period from _____ to _____Commission file number of the issuing entity: 333-199921-03**

**Central Index Key Number of the issuing entity:0001647980**

**CSAIL 2015-C3 Commercial MortgageTrust**

**(exact name of the issuing entity as specified in itscharter)**

** **

**Central Index Key Number of the depositor: 0000802106**

**Credit Suisse First Boston MortgageSecurities Corp.**

**(exact name of the depositor as specified in its charter)**

** **

**Central Index Key Number of the sponsor: 0001628601**

**Column Financial, Inc.**

**(exact name of the sponsor as specified in its charter)**

** **

**Central Index Key Number of the sponsor: 0001541886**

**UBS Real Estate Securities Inc.**

**(exact name of the sponsor as specified in its charter)**

** **

**Central Index Key Number of the sponsor: 0001497973**

**The Bank of New York Mellon**

**(exact name of the sponsor as specified in its charter)**

** **

**Central Index Key Number of the sponsor: 0001632269**

**Benefit Street Partners CRE FinanceLLC**

**(exact name of the sponsor as specified in its charter)**

** **

**Central Index Key Number of the sponsor: 0001505494**

**The Bancorp Bank**

**(exact name of the sponsor as specified in its charter)**

** **

| **New York****(State or other jurisdiction of  incorporation or organization of**

**the issuing entity)** | **38-3976110**

**38-3976111**

**38-7143593**

**(I.R.S. Employer**

**Identification Numbers)** |
|------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------|

**c/o Wells Fargo Bank, National Association**

**as Certificate Administrator**

**9062 Old Annapolis Road**

**Columbia, MD**

**(Address of principalexecutive offices of the issuing entity)**

**21045**

**(Zip Code)**

**Registrant’s telephone number,including area code:**

**(212) 272-6858**

Securities registered pursuant to Section 12(b) of the Act:

| Title of each class | Trading Symbol(s) | Name of each  exchange on which registered |
|---------------------|-------------------|--------------------------------------------|
| None                |              |                                       |

Securities registered pursuant to Section 12(g) of theAct:  None.

Indicate by check mark if the registrant is a well-knownseasoned issuer, as defined in Rule 405 of the Securities Act.  o Yes ⌧No

Indicate by check mark if the registrant is not required tofile reports pursuant to Section 13 or Section 15(d) of the Act.  o Yes ⌧No

Indicate by check mark whether the registrant (1) has filedall reports required to be filed by Section 13 or 15(d) of the SecuritiesExchange Act of 1934 during the preceding 12 months (or for such shorter periodthat the registrant was required to file such reports), and (2) has beensubject to such filing requirements for the past 90 days.  ⌧ Yes oNo

Indicate by check mark whether the registrant has submittedelectronically and posted on its corporate Web site, if any, every InteractiveData File required to be submitted and posted pursuant to Rule 405 ofRegulation S-T (Section 232.405 of this chapter) during the preceding 12 months(or for such shorter period that the registrant was required to submit and postsuch files).

Not applicable.

Indicate by check mark if disclosure of delinquent filerspursuant to Item 405 of Regulation S-K (Section 229.405 of this chapter) is notcontained herein, and will not be contained, to the best of registrant’sknowledge, in definitive proxy or information statements incorporated byreference in Part III of this Form 10-K or any amendment to this Form10-K.   

Not applicable.

Indicate by check mark whether the registrant is a largeaccelerated filer, an accelerated filer, a non-accelerated filer, a smallerreporting company, or an emerging growth company. See the definitions of “largeaccelerated filer,” “accelerated filer,” “smaller reporting company,” and“emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer       o                                       Acceleratedfiler                                                                        o

Non-accelerated filer        ⌧  (Do notcheck if a smaller reporting company)                                       Smaller reportingcompany                                                        o

                                                                              Emerging growthcompany                                                        o

If an emerging growth company, indicate by check mark if theregistrant has elected not to use the extended transition period for complyingwith any new or revised financial accounting standards provided pursuant toSection 13(a) of the Exchange Act.  o

Indicate by check mark whether the registrant is a shellcompany (as defined in Rule 12b-2 of the Act).  o Yes ⌧ No

State the aggregate market value of the voting and non-votingcommon equity held by non-affiliates computed by reference to the price atwhich the common equity was last sold, or the average bid and asked price ofsuch common equity, as of the last business day of the registrant’s mostrecently completed second fiscal quarter.

Not applicable.

Indicate by check mark whether the registrant has filed alldocuments and reports required to be filed by Section 12, 13 or 15(d) of theSecurities Exchange Act of 1934 subsequent to the distribution of securities undera plan confirmed by a court.  oYes oNo

Not applicable.

Indicate the number of shares outstanding of each of theregistrant’s classes of common stock, as of the latest practicable date.

Not applicable.

**DOCUMENTS INCORPORATED BY REFERENCE**

** **

List hereunder the following documents if incorporated byreference and the Part of the Form 10-K (e.g., Part I, Part II, etc.) intowhich the document is incorporated: (1) Any annual report to security holders;(2) Any proxy or information statement; and (3) Any prospectus filed pursuantto Rule 424(b) or (c) under the Securities Act of 1933. The listed documentsshould be clearly described for identification purposes (e.g., annual report tosecurity holders for fiscal year ended December 24, 1980).

Not applicable.

 

** **

**EXPLANATORY NOTES**

The Charles River Plaza North Mortgage Loan,the Starwood Capital Extended Stay Portfolio Mortgage Loan, The Mall of NewHampshire Mortgage Loan, the Arizona Grand Resort & Spa Mortgage Loan andthe Cape May Hotels Mortgage Loan, which constituted approximately 9.2%, 7.4%,7.0%, 3.5% and 1.1%, respectively, of the asset pool of the issuing entity asof its cut-off date, are each an asset of the issuing entity and are each partof a loan combination that includes (a) with respect to the Charles River PlazaNorth Mortgage Loan which is an asset of the issuing entity and three other *paripassu* loans and one subordinate companion loan, each of which are notassets of the issuing entity, (b) with respect to the Starwood Capital ExtendedStay Portfolio Mortgage Loan which is an asset of the issuing entity and threeother *pari passu* loans, which are not assets of the issuing entity, (c)with respect to The Mall of New Hampshire Mortgage Loan which is an asset ofthe issuing entity and one other *pari passu* loan, which is not an assetof the issuing entity, (d) with respect to the Arizona Grand Resort & SpaMortgage Loan which is an asset of the issuing entity and one other *paripassu* loan, which is not an asset of the issuing entity and (e) with respectto the Cape May Hotels Mortgage Loan which is an asset of the issuing entityand one other *pari passu* loan, which is not an asset of the issuingentity. These loan combinations, including the Charles River Plaza NorthMortgage Loan, the Starwood Capital Extended Stay Portfolio Mortgage Loan, TheMall of New Hampshire Mortgage Loan, the Arizona Grand Resort & SpaMortgage Loan and the Cape May Hotels Mortgage Loan, are being serviced andadministered pursuant to the Pooling and Servicing Agreement, which isincorporated by reference as Exhibit 4.1 to this Annual Report on Form 10-K. 

The Exhibit Index describesexhibits provided by certain parties (in their capacities indicated on theExhibit Index) with respect to the Soho-Tribeca Grand Hotel Portfolio MortgageLoan and the Westfield Trumbull Mortgage Loan, which constituted approximately3.5% and 2.9%, respectively, of the asset pool of the issuing entity as of itscut-off date.  The Soho-Tribeca Grand Hotel Portfolio Mortgage Loan andthe Westfield Trumbull Mortgage Loan are each an asset of the issuing entityand are each part of a loan combination that includes (a) with respect to theSoho-Tribeca Grand Hotel Portfolio Mortgage Loan and two other *pari passu*loans and one subordinate companion loan, which are not assets of the issuingentity or (b) with respect to the Westfield Trumbull Mortgage Loan and twoother *pari passu* loans, which are not assets of the issuing entity. A *paripassu* portion of each loan combination was securitized in the CSAIL 2015-C1Commercial Mortgage Trust transaction, Commission File Number 333-199921-01(the “CSAIL 2015-C1 Transaction”). These loan combinations, includingthe Soho-Tribeca Grand Hotel Portfolio Mortgage Loan and the Westfield TrumbullMortgage Loan, are being serviced and administered pursuant to the pooling andservicing agreement for the CSAIL 2015-C1 Transaction, which is incorporated byreference as Exhibit 4.2 to this Annual Report on Form 10-K.

The Exhibit Index describesexhibits provided by certain parties (in their capacities indicated on theExhibit Index) with respect to the Westfield Wheaton Mortgage Loan and theSterling & Milagro Apartments Mortgage Loan, which constitutedapproximately 6.8% and 1.2%, respectively, of the asset pool of the issuingentity as of its cut-off date.  The Westfield Wheaton Mortgage Loan andthe Sterling & Milagro Apartments Mortgage Loan are each an asset of theissuing entity and are each part of a loan combination that includes (a) withrespect to the Westfield Wheaton Mortgage Loan and two other *pari passu*loans, which are not assets of the issuing entity or (b) with respect to theSterling & Milagro Apartments Mortgage Loan and one other *pari passu*loan, which is not an asset of the issuing entity. A *pari passu* portionof each loan combination was securitized in the CSAIL 2015-C2 CommercialMortgage Trust transaction, Commission File Number 333-199921-02 (the “CSAIL2015-C2 Transaction”). These loan combinations, including the WestfieldWheaton Mortgage Loan and the Sterling & Milagro Apartments Mortgage Loan,are being serviced and administered pursuant to the pooling and servicingagreement for the CSAIL 2015-C2 Transaction, which is incorporated by referenceas Exhibit 4.3 to this Annual Report on Form 10-K.

The Exhibit Index describesexhibits provided by certain parties (in their capacities indicated on theExhibit Index) with respect to the WPC Department Store Portfolio MortgageLoan, which constituted approximately 1.2% of the asset pool of the issuingentity as of its cut-off date.  The WPC Department Store PortfolioMortgage Loan is an asset of the issuing entity and is part of a loancombination that includes the WPC Department Store Portfolio Mortgage Loan andtwo other *pari passu* loans, which are not assets of the issuingentity.This loan combination, including the WPC Department Store PortfolioMortgage Loan, was serviced under the Pooling and Servicing Agreement for theissuing entity prior to the closing of the securitization of a *pari passu*portion of the WPC Department Store Portfolio loan combination in the Bank ofAmerica Merrill Lynch Commercial Mortgage Trust 2015-UBS7 transaction,Commission File Number 333-201743-01 (the “BAMLCM 2015-UBS7 Transaction”). After the closing of the BAMLCM 2015-UBS7 Transaction on September 24, 2015,this loan combination, including the WPC Department Store Portfolio MortgageLoan was, and will continue to be, serviced and administered pursuant to thepooling and servicing agreement with respect to the BAMLCM 2015-UBS7Transaction, which is incorporated by reference as Exhibit 4.4 to this AnnualReport on Form 10-K.

The master servicer of a poolingand servicing agreement or trust and servicing agreement also functions as theprimary servicer of the related mortgage loans serviced and administeredpursuant to such agreement unless a separate primary servicer is identifiedherein.  If this report does not identify a separate primary servicer, theservicer compliance statement provided by the master servicer under any suchagreement also encompasses its responsibilities as primary servicer of therelated mortgage loan or mortgage loans.

Midland Loan Services, a Division ofPNC Bank, National Association is the master servicer of the mortgage loansserviced under the Pooling and Servicing Agreement and the primary servicer ofthe WPC Department Store Portfolio Mortgage Loan. As a result, Midland LoanServices, a Division of PNC Bank, National Association is a “servicer” asdefined in Item 1108(a)(2)(iii) of Regulation AB, in the capacities describedabove, because it is servicing mortgage loans that constituted 10% or more ofthe assets of the issuing entity as of its cut-off date. The assessments ofcompliance with applicable servicing criteria, accountants’ attestation reportsand servicer compliance statements delivered by Midland Loan Services, aDivision of PNC Bank, National Association in the capacities described aboveare listed in the Exhibit Index.

Rialto Capital Advisors, LLC isthe special servicer of the mortgage loans serviced under the Pooling andServicing Agreement, the Westfield Wheaton Mortgage Loan and the Sterling &Milagro Apartments Mortgage Loan. As a result, Rialto Capital Advisors, LLC isa “servicer” as defined in Item 1108(a)(2)(iii) of Regulation AB, in thecapacities described above, because it is servicing mortgage loans thatconstituted 10% or more of the assets of the issuing entity as of its cut-offdate. The assessments of compliance with applicable servicing criteria,accountants’ attestation reports and servicer compliance statements deliveredby Rialto Capital Advisors, LLC in the capacities described above are listed inthe Exhibit Index.

Wells Fargo Bank, NationalAssociation is the certificate administrator of the mortgage loans servicedunder the Pooling and Servicing Agreement and the primary servicer of theWestfield Wheaton Mortgage Loan and the Sterling & Milagro Apartments MortgageLoan. As a result, Wells Fargo Bank, National Association is a “servicer” asdefined in Item 1108(a)(2)(iii) of Regulation AB, in the capacities describedabove, because it is servicing mortgage loans that constituted 10% or more ofthe assets of the issuing entity as of its cut-off date. The assessments ofcompliance with applicable servicing criteria, accountants’ attestation reportsand servicer compliance statements delivered by Wells Fargo Bank, NationalAssociation in the capacities described above are listed in the Exhibit Index.

Wells Fargo Bank, National Association is the custodian ofthe mortgage loans serviced under the Pooling and Servicing Agreement, theWestfield Wheaton Mortgage Loan, the Soho-Tribeca Grand Hotel PortfolioMortgage Loan, the Westfield Trumbull Mortgage Loan and the Sterling &Milagro Apartments Mortgage Loan.  As a result, Wells Fargo Bank, NationalAssociation is a servicing function participant in the capacities describedabove, because it is servicing mortgage loans that constituted 5% or more ofthe assets of the issuing entity as of its cut-off date. The assessments ofcompliance with applicable servicing criteria and accountants’ attestationreports delivered by Wells Fargo Bank, National Association in the capacities describedabove are listed in the Exhibit Index.

Pentalpha Surveillance LLC is the operating advisor of themortgage loans serviced under the Pooling and Servicing Agreement and the trustadvisor of the WPC Department Store Portfolio Mortgage Loan. As a result,Pentalpha Surveillance LLC is a servicing function participant in thecapacities described above, because it is servicing mortgage loans thatconstituted 5% or more of the assets of the issuing entity as of its cut-offdate. The assessments of compliance with applicable servicing criteria andaccountants’ attestation reports delivered by Pentalpha Surveillance LLC in thecapacities described above are listed in the Exhibit Index.

Park Bridge Lender Services LLC is the operating advisor ofthe Westfield Wheaton Mortgage Loan, the Soho-Tribeca Grand Hotel PortfolioMortgage Loan, the Westfield Trumbull Mortgage Loan and the Sterling &Milagro Apartments Mortgage Loan. As a result, Park Bridge Lender Services LLCis a servicing function participant in the capacities described above, becauseit is servicing mortgage loans that constituted 5% or more of the assets of theissuing entity as of its cut-off date. The assessments of compliance withapplicable servicing criteria and accountants’ attestation reports delivered byPark Bridge Lender Services LLC in the capacities described above are listed inthe Exhibit Index.

KeyBank National Association isthe primary servicer of the Westfield Trumbull Mortgage Loan and theSoho-Tribeca Grand Hotel Portfolio Mortgage Loan.  These mortgage loansconstitute more than 5%, but less than 10%, of the pool assets of the issuingentity.  Therefore, the Depositor included in this Annual Report on Form10-K an assessment of compliance with applicable servicing criteria for KeyBankNational Association and an accountants’ attestation report pursuant to Item1122 of Regulation AB because KeyBank National Association is servicing morethan 5% of the pool assets.  However, the Depositor is not required toinclude in this Annual Report on Form 10-K a servicer compliance statementpursuant to Item 1123 of Regulation AB of KeyBank National Association becauseKeyBank National Association is an unaffiliated servicer servicing less than10% of pool assets.

C-III Asset Management LLC is thespecial servicer of the Westfield Trumbull Mortgage Loan and the Soho-TribecaGrand Hotel Portfolio Mortgage Loan.  These mortgage loans constitute morethan 5%, but less than 10%, of the pool assets of the issuing entity. Therefore, the Depositor included in this Annual Report on Form 10-K anassessment of compliance with applicable servicing criteria for C-III AssetManagement LLC and an accountants’ attestation report pursuant to Item 1122 ofRegulation AB because C-III Asset Management LLC is servicing more than 5% ofthe pool assets.  However, the Depositor is not required to include inthis Annual Report on Form 10-K a servicer compliance statement pursuant toItem 1123 of Regulation AB of C-III Asset Management LLC because C-III AssetManagement LLC is an unaffiliated servicer servicing less than 10% of poolassets.

Wells Fargo Bank, NationalAssociation acts as trustee of the Charles River Plaza North Mortgage Loan, theStarwood Capital Extended Stay Portfolio Mortgage Loan, the Mall of NewHampshire Mortgage Loan, the Arizona Grand Resort & Spa Mortgage Loan, theCape May Hotels Mortgage Loan, the Soho-Tribeca Grand Hotel Portfolio MortgageLoan and the Westfield Trumbull Mortgage Loan.  Pursuant to the Poolingand Servicing Agreement and the pooling and servicing agreement for the CSAIL2015-C1 Transaction, the trustee is required to provide an assessment ofcompliance with applicable servicing criteria solely with respect to Item1122(d)(2)(iii) of Regulation AB (regarding advances of funds or guaranteesregarding collections, cash flows or distributions, and any interest or otherfees charged for such advances, are made, reviewed and approved as specified inthe transaction agreements). However, during the reporting period, the trusteedid not perform any servicing function with respect to the servicing criteriaspecified in Item 1122(d)(2)(iii) of Regulation AB.  The master serviceror the special servicer, to the extent required, performed the servicingfunction identified with respect to Item 1122(d)(2)(iii) of Regulation AB, andeach such party included Item 1122(d)(2)(iii) of Regulation AB in theassessment of compliance with applicable servicing criteria and accountant’sattestation report for the subject transaction.  As a result, this Annual Reporton Form 10-K does not include an assessment of compliance with applicableservicing criteria of the trustee. One or more other servicers of the CharlesRiver Plaza North Mortgage Loan, the Starwood Capital Extended Stay PortfolioMortgage Loan, the Mall of New Hampshire Mortgage Loan, the Arizona GrandResort & Spa Mortgage Loan, the Cape May Hotels Mortgage Loan, theSoho-Tribeca Grand Hotel Portfolio Mortgage Loan and the Westfield TrumbullMortgage Loan have delivered one or more assessments of compliance with respectto Item 1122(d)(2)(iii) of Regulation AB.

Wilmington Trust, NationalAssociation acts as trustee of the Westfield Wheaton Mortgage Loan and theSterling & Milagro Apartments Mortgage Loan.  Pursuant to the poolingand servicing agreement for the CSAIL 2015-C2 Transaction, the trustee isrequired to provide an assessment of compliance with applicable servicingcriteria solely with respect to Item 1122(d)(2)(iii) of Regulation AB(regarding advances of funds or guarantees regarding collections, cash flows ordistributions, and any interest or other fees charged for such advances, aremade, reviewed and approved as specified in the transaction agreements).However, during the reporting period, the trustee did not perform any servicingfunction with respect to the servicing criteria specified in Item1122(d)(2)(iii) of Regulation AB.  The master servicer or the specialservicer, to the extent required, performed the servicing function identifiedwith respect to Item 1122(d)(2)(iii) of Regulation AB, and each such partyincluded Item 1122(d)(2)(iii) of Regulation AB in the assessment of compliancewith applicable servicing criteria and accountant’s attestation report for thesubject transaction.  As a result, this Annual Report on Form 10-K doesnot include an assessment of compliance with applicable servicing criteria ofthe trustee. One or more other servicers of the Westfield Wheaton Mortgage Loanand the Sterling & Milagro Apartments Mortgage Loan have delivered one ormore assessments of compliance with respect to Item 1122(d)(2)(iii) ofRegulation AB.

U.S. Bank National Associationacts as trustee of the WPC Department Store Portfolio Mortgage Loan. Pursuant to the pooling and servicing agreement for the BAMLCM 2015-UBS7Transaction, the trustee is required to provide an assessment of compliancewith applicable servicing criteria solely with respect to Item 1122(d)(2)(iii)of Regulation AB (regarding advances of funds or guarantees regardingcollections, cash flows or distributions, and any interest or other feescharged for such advances, are made, reviewed and approved as specified in thetransaction agreements). However, during the reporting period, the trustee didnot perform any servicing function with respect to the servicing criteriaspecified in Item 1122(d)(2)(iii) of Regulation AB.  The master serviceror the special servicer, to the extent required, performed the servicingfunction identified with respect to Item 1122(d)(2)(iii) of Regulation AB, andeach such party included Item 1122(d)(2)(iii) of Regulation AB in theassessment of compliance with applicable servicing criteria and accountant’sattestation report for the subject transaction.  As a result, this AnnualReport on Form 10-K does not include an assessment of compliance withapplicable servicing criteria of the trustee. One or more other servicers ofthe WPC Department Store Portfolio Mortgage Loan have delivered one or moreassessments of compliance with respect to Item 1122(d)(2)(iii) of RegulationAB.

This Annual Report on Form 10-Kincludes assessments of compliance with applicable servicing criteria andaccountants’ attestation reports from CoreLogic Commercial Real EstateServices, Inc. and National Tax Search, LLC.  These entities were engagedby the primary servicer of the Westfield Wheaton Mortgage Loan and the Sterling& Milagro Apartments Mortgage Loan to remit tax payments received from theescrow accounts of borrowers to local taxing authorities, to report tax amountsdue, to verify tax parcel information, and to verify non-escrow tax payments.These servicing functions are included within the servicing criteria set forthin Items 1122(d)(4)(xi) and 1122(d)(4)(xii) of Regulation AB.  Therefore,under the principles-based definition of “servicer” set forth in Item 1101(j)of Regulation AB that looks to the functions that an entity performs, thesevendors are “servicers” for the purposes of Item 1122 of Regulation AB.  *See*Compliance and Disclosure Interpretations, Section 301.01 (Item 1101(j)).

Theassessments of compliance with applicable servicing criteria, accountants’attestation reports and servicer compliance statements of the certificateadministrator of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan, theWestfield Trumbull Mortgage Loan, the Westfield Wheaton Mortgage Loan, theSterling & Milagro Apartments Mortgage Loan and the WPC Department StorePortfolio Mortgage Loan listed on the Exhibit Index are omitted from thisAnnual Report on Form 10-K as the certificate administrator pursuant to therelated pooling and servicing agreement or trust and servicing agreement doesnot perform any activities that address servicing criteria with respect to theissuing entity and because they are each not a “servicer” that meets thecriteria in Item 1108(a)(2)(i) through (iii) of Regulation AB.

With respect to the *pari passu*loan combinations that include the Charles River Plaza North Mortgage Loan, theSoho-Tribeca Grand Hotel Portfolio Mortgage Loan, the Westfield TrumbullMortgage Loan and the WPC Department Store Portfolio Mortgage Loan, (i) thereports on assessment of compliance with servicing criteria and attestationreports on assessment of compliance with servicing criteria of LNR Partners,LLC as special servicer of the WPC Department Store Portfolio Mortgage Loan andU.S. Bank National Association as custodian of the WPC Department StorePortfolio Mortgage Loan, listed on the Exhibit Index are omitted from thisAnnual Report on Form 10-K as they are not required to be included on thisAnnual Report on Form 10-K per Instruction 3 to Item 1122 of Regulation ABbecause they are parties performing activities that address servicing criteriarelating to 5% or less of the assets of the issuing entity; and (ii) theservicer compliance statements of KeyBank National Association as primaryservicer of the Westfield Trumbull Mortgage Loan and the Soho-Tribeca GrandHotel Portfolio Mortgage Loan, AEGON USA Realty Advisors, as special servicerof the Charles River Plaza North Mortgage Loan, C-III Asset Management LLC as specialservicer of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan and theWestfield Trumbull Mortgage Loan, and LNR Partners, LLC as special servicer ofthe WPC Department Store Portfolio Mortgage Loan, listed on the Exhibit Indexare omitted from this Annual Report on Form 10-K as they are not required byItem 1123 of Regulation AB to be included on this Annual Report on Form 10-Kbecause they are each an unaffiliated party that is not a “servicer” that meetsthe criteria in Item 1108(a)(2)(i) through (iii) of Regulation AB.

**PART I**

**Item 1.  Business.**

Omitted.

**Item 1A.  Risk Factors.**

Omitted.

**Item 1B.  Unresolved Staff Comments.**

None.

**Item 2.  Properties.**

Omitted.

**Item 3.  Legal Proceedings.**

Omitted.

**Item 4.  Mine Safety Disclosures.**

Not applicable.

**PART II**

**Item 5.  Market for Registrant’s Common Equity,Related Stockholder Matters and Issuer Purchases of Equity Securities.**

Omitted.

**Item 6.  Selected Financial Data.**

Omitted.

**Item 7.  Management’s Discussion and Analysis of FinancialCondition and Results of Operations.**

Omitted.

**Item 7A.  Quantitative and Qualitative DisclosuresAbout Market Risk.**

Omitted.

**Item 8.  Financial Statements and Supplementary Data.**

Omitted.

**Item 9.  Changes in and Disagreements WithAccountants on Accounting and Financial Disclosure.**

Omitted.

**Item 9A.  Controls and Procedures.**

Omitted.

**Item 9B.  Other Information.**

None.

**PART III**

**Item 10.  Directors, Executive Officers and CorporateGovernance.**

Omitted.

**Item 11.  Executive Compensation.**

Omitted.

**Item 12.  Security Ownership of Certain BeneficialOwners and Management and Related Stockholder Matters.**

Omitted.

**Item 13.  Certain Relationships and RelatedTransactions, and Director Independence.**

Omitted.

**Item 14.  Principal Accounting Fees and Services.**

Omitted.

**ADDITIONAL DISCLOSURE ITEMS FOR REGULATION AB**

**Item 1112(b) of Regulation AB, Significant ObligorFinancial Information.**

No single obligor represents 10% or more of the pool assetsheld by the issuing entity. 

**Item 1114(b)(2) of Regulation AB, Significant EnhancementProvider Financial Information.**

No entity or group of affiliated entities provides any externalcreditenhancement or other support for the certificates within this transaction asdescribed under Item 1114(a) of Regulation AB.

**Item 1115(b) of Regulation AB, Certain DerivativesInstruments (Financial Information).**

No entity or group of affiliated entities provides anyderivative instruments or other support for the certificates within thistransaction as described under Item 1115 of Regulation AB.

**Item 1117 of Regulation AB, Legal Proceedings.**

The registrant knows of no material pending legal proceedinginvolving the trust or any party related to the trust, other than routinelitigation incidental to the duties of those respective parties, and thefollowing, with respect to Wells Fargo Bank, National Association, ascertificate administrator, as custodian and as trustee.

Beginning on June 18, 2014, a group of institutionalinvestors filed civil complaints in the Supreme Court of the State of New York,New York County, and later the U.S. District Court for the Southern District ofNew York, against Wells Fargo Bank, N.A., (“Wells Fargo Bank”) in itscapacity as trustee for certain residential mortgage backed securities (“RMBS”)trusts.  The complaints against Wells Fargo Bank alleged that the trusteecaused losses to investors and asserted causes of action based upon, amongother things, the trustee's alleged failure to: (i) notify and enforcerepurchase obligations of mortgage loan sellers for purported breaches ofrepresentations and warranties, (ii) notify investors of alleged events ofdefault, and (iii) abide by appropriate standards of care following allegedevents of default. Relief sought included money damages in an unspecifiedamount, reimbursement of expenses, and equitable relief. In November 2018,Wells Fargo Bank reached an agreement, in which it denied any wrongdoing, toresolve such claims on a classwide basis for the 271 RMBS trusts at issue. On May 6, 2019, the court entered an order approving the settlementagreement.  Separate lawsuits against Wells Fargo Bank making similarallegations filed by certain other institutional investors concerning severalRMBS trusts in New York federal and state court are not covered by theagreement.  With respect to such litigations, Wells Fargo Bank believesplaintiffs' claims are without merit and intends to contest the claimsvigorously, but there can be no assurances as to the outcome of the litigationsor the possible impact of the litigations on Wells Fargo Bank or the RMBStrusts.

**Item 1119 of Regulation AB, Affiliations and CertainRelationships and Related Transactions.**

The information regarding this Item has been previouslyprovided in a prospectus supplement of the Registrant relating to the issuingentity filed on August 18, 2015 pursuant to Rule 424(b)(5).

**Item 1122 of Regulation AB, Compliance with ApplicableServicing Criteria.**

The reports on assessments of compliance with the servicingcriteria for asset-backed securities and related attestation reports on suchassessments of compliance with respect to the mortgage loans are attachedhereto under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit Oto the Pooling and Servicing Agreement incorporated by reference as Exhibit 4.1to this Annual Report on Form 10-K is a chart identifying the entitiesparticipating in a servicing function for the transaction responsible for eachapplicable servicing criteria set forth in Item 1122(d).

The reports on assessments of compliance with the servicingcriteria for asset-backed securities and related attestation reports on suchassessments of compliance with respect to the Soho-Tribeca Grand HotelPortfolio Mortgage Loan and the Westfield Trumbull Mortgage Loan, which arebeing serviced and administered pursuant to the pooling and servicing agreementfor the CSAIL 2015-C1 Transaction, are attached hereto under Item 15 to thisAnnual Report on Form 10-K. Attached as Exhibit O to the pooling and servicingagreement for the CSAIL 2015-C1 Transaction incorporated by reference asExhibit 4.2 to this Annual Report on Form 10-K is a chart identifying theentities participating in a servicing function for the CSAIL 2015-C1Transaction responsible for each applicable servicing criteria set forth inItem 1122(d).

The reports on assessments of compliance with the servicingcriteria for asset-backed securities and related attestation reports on suchassessments of compliance with respect to the Westfield Wheaton Mortgage Loanand the Sterling & Milagro Apartments Mortgage Loan, which are beingserviced and administered pursuant to the pooling and servicing agreement forthe CSAIL 2015-C2 Transaction, are attached hereto under Item 15 to this AnnualReport on Form 10-K. Attached as Exhibit O to the pooling and servicingagreement for the CSAIL 2015-C2 Transaction incorporated by reference asExhibit 4.3 to this Annual Report on Form 10-K is a chart identifying theentities participating in a servicing function for the CSAIL 2015-C2Transaction responsible for each applicable servicing criteria set forth inItem 1122(d).

The reports on assessments of compliance with the servicingcriteria for asset-backed securities and related attestation reports on suchassessments of compliance with respect to the WPC Department Store PortfolioMortgage Loan, which is being serviced and administered pursuant to the poolingand servicing agreement for the BAMLCM 2015-UBS7 Transaction, are attachedhereto under Item 15 to this Annual Report on Form 10-K. Attached as ScheduleVIII to the pooling and servicing agreement for the BAMLCM 2015-UBS7Transaction incorporated by reference as Exhibit 4.4 to this Annual Report onForm 10-K is a chart identifying the entities participating in a servicingfunction for the BAMLCM 2015-UBS7 Transaction responsible for each applicableservicing criteria set forth in Item 1122(d).

The report on assessment of compliance with applicableservicing criteria furnished pursuant to Item 1122 of Regulation AB by MidlandLoan Services, a Division of PNC Bank National Association (“Midland”)discloses that a material instance of noncompliance occurred, as describedbelow:

Material Instance of Noncompliance

In certain instances, the ScheduleAL Files (Item 1125 of Regulation AB) were not reported in accordance with theterms specified in the transaction agreements, in conflict with Item1122(d)(3)(i): “Reports to investors, including those to be filed with theCommission, are maintained in accordance with the transaction agreements andapplicable Commission requirements. Specifically, such reports: (A) Areprepared in accordance with timeframes and other terms set forth in thetransaction agreements”.  The noncompliance consisted of omitted orinaccurately reported fields as described in (1) and (2) below.  (1) Inconnection with other enhancements Midland made to its manual Schedule ALprocess, starting in April 2019, Midland developed and implemented new ScheduleAL reporting templates for each applicable CMBS transaction that closed priorto April 2019 and for each applicable CMBS transaction going forward. Related to this, Midland made certain template setup errors, along with relatedand other manual inputting of information errors, and the errors were not identifiedprior to submission of the applicable Schedule AL Files in certain cases due tobreakdowns in quality control.  (2) In one applicable transaction, therelated Schedule AL File for a given month was not saved properly resulting inthe prior month's Schedule AL File being submitted for the given month insteadof the correct Schedule AL File. 

The identified instances did notinvolve the servicing of assets included in this securitization.

Steps Taken to Remedy the Material Instance of Noncompliance

Midland’s Schedule AL reportingprocess was enhanced in April of 2019, however, the process remained manualthroughout the 2019 calendar year.  Errors relating to certain Schedule ALFiles during 2019 were identified during the related audit.  Followingidentification, Midland made staffing changes and additional enhancements andimprovements to its processes and procedures to support its Schedule ALreporting obligations and expects to move to an automated solution for thisprocess.  

Midland is currently remediating theSchedule AL reporting for certain of the CMBS transactions found to beincorrect.

**Item 1123 of Regulation AB, Servicer Compliance Statement.**

The servicer compliance statements are attached as Exhibitsto this Annual Report on Form 10-K.

**PART IV**

**Item 15. Exhibits, Financial Statement Schedules**

(a)         The following is a list of documents filed as part of this Annual Report onForm 10-K:

(1) Not applicable

(2) Not applicable

(3) See below

4.1         Poolingand Servicing Agreement, dated as of August 1, 2015, by and among Credit SuisseFirst Boston Mortgage Securities Corp., as Depositor, Midland Loan Services, aDivision of PNC Bank, National Association, as Master Servicer, Rialto CapitalAdvisors, LLC, as Special Servicer, Pentalpha Surveillance LLC, as OperatingAdvisor, Wells Fargo Bank, National Association, as Certificate Administratorand Wells Fargo Bank, National Association, as Trustee (filed as Exhibit 4.1 tothe registrant’s Current Report on Form 8-K/A filed on September 28, 2015 underCommission File No. 333-199921-03 and incorporated by reference herein).

4.2         Poolingand Servicing Agreement, dated as of March 1, 2015, by and among Credit SuisseFirst Boston Mortgage Securities Corp., as Depositor, KeyBank NationalAssociation, as Master Servicer, C-III Asset Management LLC, as SpecialServicer, Park Bridge Lender Services LLC, as Operating Advisor, Wells FargoBank, National Association, as Certificate Administrator and Wells Fargo Bank,National Association, as Trustee (filed as Exhibit 4.2 to the registrant’sCurrent Report on Form 8-K filed on August 18, 2015 under Commission File No.333-199921-03 and incorporated by reference herein).

4.3         Poolingand Servicing Agreement, dated as of May 1, 2015, by and among Credit SuisseFirst Boston Mortgage Securities Corp., as Depositor, Wells Fargo Bank,National Association, as Master Servicer, Rialto Capital Advisors, LLC, asSpecial Servicer, Park Bridge Lender Services LLC, as Operating Advisor, WellsFargo Bank, National Association, as Certificate Administrator and WilmingtonTrust, National Association, as Trustee (filed as Exhibit 4.3 to theregistrant’s Current Report on Form 8-K filed on August 18, 2015 underCommission File No. 333-199921-03 and incorporated by reference herein).

4.4         Poolingand Servicing Agreement, dated as of September 1, 2015, by and among Banc ofAmerica Merrill Lynch Commercial Mortgage Inc., as Depositor, Midland LoanServices, a Division of PNC Bank, National Association, as Master Servicer, LNRPartners, LLC, as Special Servicer, and Pentalpha Surveillance LLC, as Trust Advisorand U.S. Bank National Association, as Trustee, Certificate Administrator,Certificate Registrar, Authenticating Agent and Custodian (filed as Exhibit 4.1to the registrant’s Current Report on Form 8-K/A filed on October 20, 2015under Commission File No. 333-199921 -03 and incorporated by reference herein).

4.5         Amendedand Restated Agreement Between Noteholders, dated as of September 15, 2015, byand between Wells Fargo Bank, National Association, not in its individualcapacity but solely as Trustee, for the benefit of the Holders of CSAIL 2015C-3 Mortgage Trust Commercial Mortgage Pass-Through Certificates, as the NoteA-1 Holder and Note A-2 Holder, UBS Real Estate Securities Inc., as the NoteA-3-1 Holder and Note A-3-2 Holder, and Prima Mortgage Investment Trust, LLC asthe Junior Noteholder (filed as Exhibit 4.3 to the registrant’s Current Reporton Form 8-K/A filed on September 28, 2015 under Commission File No.333-199921-03 and incorporated by reference herein)

4.6         Co-LenderAgreement, dated as of August 18, 2015, by and among Column Financial, Inc., asInitial Note A-1-A Holder, Initial Note A-1-B Holder, Initial Note A-2 Holderand Initial Note A-3 Holder (filed as Exhibit 4.4 to the registrant’s CurrentReport on Form 8-K/A filed on September 28, 2015 under Commission File No.333-199921-03 and incorporated by reference herein)

4.7         Co-LenderAgreement, dated as of August 18, 2015, by and between UBS Real EstateSecurities Inc., as the Initial Note A-1 Holder and Initial Note A-2 Holder(filed as Exhibit 4.5 to the registrant’s Current Report on Form 8-K/A filed onSeptember 28, 2015 under Commission File No. 333-199921-03 and incorporated byreference herein)

4.8         Amendedand Restated Co-Lender Agreement, dated as of May 20, 2015, by and among ColumnFinancial, Inc., as Initial Note Group 1-1 Holder, Initial Note Group 1-2Holder and Initial Note Group 2 Holder, and Wells Fargo Bank, NationalAssociation, as Trustee for the Registered Holders of CSAIL 2015-C1 CommercialMortgage Trust, Commercial Mortgage Pass-Through Certificates, Series 2015-C1,as Note Group 3 Holder (filed as Exhibit 4.6 to the registrant’s Current Reporton Form 8-K/A filed on September 28, 2015 under Commission File No.333-199921-03 and incorporated by reference herein)

4.9         Co-LenderAgreement, dated as of August 18, 2015, by and among Column Financial, Inc., asInitial Note A-1 Holder and Initial Note A-2 Holder (filed as Exhibit 4.7 tothe registrant’s Current Report on Form 8-K/A filed on September 28, 2015 underCommission File No. 333-199921-03 and incorporated by reference herein)

4.10       AgreementBetween Noteholders, dated as of March 3, 2015, by and among Column Financial,Inc., as Initial Note A-1 Holder, Initial Note A-2 Holder, Initial Note A-3Holder and Initial Note B Holder (filed as Exhibit 4.8 to the registrant’sCurrent Report on Form 8-K/A filed on September 28, 2015 under Commission FileNo. 333-199921-03 and incorporated by reference herein)

4.11       Co-LenderAgreement, dated as of March 20, 2015, by and among Column Financial, Inc., as InitialNote Group 1 Holder, Initial Note Group 2 Holder and Initial Note Group 3Holder (filed as Exhibit 4.9 to the registrant’s Current Report on Form 8-K/Afiled on September 28, 2015 under Commission File No. 333-199921-03 andincorporated by reference herein)

4.12       Co-LenderAgreement, dated as of August 18, 2015, by and between UBS Real EstateSecurities Inc., as the Initial Note A-1 Holder, UBS Real Estate SecuritiesInc., as the Initial Note A-2 Holder, and UBS Real Estate Securities Inc., asthe Initial Note A-3 Holder (filed as Exhibit 4.10 to the registrant’s CurrentReport on Form 8-K/A filed on September 28, 2015 under Commission File No. 333-199921-03and incorporated by reference herein)

4.13       Co-LenderAgreement, dated as of May 20, 2015, by and among Column Financial, Inc., asthe Initial Note A-1 Holder and Initial Note A-2 Holder (filed as Exhibit 4.11to the registrant’s Current Report on Form 8-K/A filed on September 28, 2015under Commission File No. 333-199921-03 and incorporated by reference herein)

4.14       Co-LenderAgreement, dated as of August 18, 2015, by and between UBS Real EstateSecurities Inc., as Initial Note A-1 Holder and Initial Note A-2 Holder (filedas Exhibit 4.12 to the registrant’s Current Report on Form 8-K/A filed onSeptember 28, 2015 under Commission File No. 333-199921-03 and incorporated byreference herein)

4.15       Co-LenderAgreement, dated as of August 18, 2015, by and among Column Financial, Inc., asInitial Note A-1-A Holder, Initial Note A-1-B Holder, Initial Note A-2 Holderand Initial Note A-3 Holder (filed as Exhibit 4.1 to the registrant’s CurrentReport on Form 8-K/A filed on November 25, 2015 under Commission File No.333-199921-03 and incorporated by reference herein)

4.16       Co-LenderAgreement, dated as of August 18, 2015, by and among Column Financial, Inc., asInitial Note A-1 Holder and Initial Note A-2 Holder (filed as Exhibit 4.2 tothe registrant’s Current Report on Form 8-K/A filed on November 25, 2015 underCommission File No. 333-199921-03 and incorporated by reference herein)

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

33          Reports on assessment of compliance with servicing criteria for asset-backedsecurities.

33.1       Midland Loan Services, aDivision of PNC Bank, National Association, as Master Servicer

33.2       Rialto Capital Advisors,LLC, as Special Servicer

33.3       Wells Fargo Bank, NationalAssociation, as Trustee and Certificate Administrator

33.4       Wells Fargo Bank, NationalAssociation, as Custodian

33.5       Pentalpha SurveillanceLLC, as Operating Advisor

33.6       Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the CharlesRiver Plaza North Mortgage Loan (see Exhibit 33.1)

33.7       AEGON USA Realty Advisors,LLC, as Special Servicer of the Charles River Plaza North Mortgage Loan

33.8       Wells Fargo Bank, National Association, as Trustee of the Charles River PlazaNorth Mortgage Loan (Omitted. See Explanatory Notes.)

33.9       Wells Fargo Bank, NationalAssociation, as Custodian of the Charles River Plaza North Mortgage Loan (seeExhibit 33.4)

33.10     Pentalpha SurveillanceLLC, as Operating Advisor of the Charles River Plaza North Mortgage Loan (seeExhibit 33.5)

33.11     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the StarwoodCapital Extended Stay Portfolio Mortgage Loan (see Exhibit 33.1)

33.12     Rialto Capital Advisors,LLC, as Special Servicer of the Starwood Capital Extended Stay PortfolioMortgage Loan (see Exhibit 33.2)

33.13     Wells Fargo Bank, National Association, as Trustee of the Starwood CapitalExtended Stay Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.14     Wells Fargo Bank, NationalAssociation, as Custodian of the Starwood Capital Extended Stay PortfolioMortgage Loan (see Exhibit 33.4)

33.15     Pentalpha SurveillanceLLC, as Operating Advisor of the Starwood Capital Extended Stay PortfolioMortgage Loan (see Exhibit 33.5)

33.16     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of The Mall ofNew Hampshire Mortgage Loan (see Exhibit 33.1)

33.17     Rialto Capital Advisors, LLC,as Special Servicer of The Mall of New Hampshire Mortgage Loan (see Exhibit33.2)

33.18     Wells Fargo Bank, National Association, as Trustee of The Mall of New HampshireMortgage Loan (Omitted. See Explanatory Notes.)

33.19     Wells Fargo Bank, NationalAssociation, as Custodian of The Mall of New Hampshire Mortgage Loan (seeExhibit 33.4)

33.20     Pentalpha SurveillanceLLC, as Operating Advisor of The Mall of New Hampshire Mortgage Loan (seeExhibit 33.5)

33.21     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the ArizonaGrand Resort & Spa Mortgage Loan (see Exhibit 33.1)

33.22     Rialto Capital Advisors,LLC, as Special Servicer of the Arizona Grand Resort & Spa Mortgage Loan(see Exhibit 33.2)

33.23     Wells Fargo Bank, National Association, as Trustee of the Arizona Grand Resort& Spa Mortgage Loan (Omitted. See Explanatory Notes.)

33.24     Wells Fargo Bank, NationalAssociation, as Custodian of the Arizona Grand Resort & Spa Mortgage Loan(see Exhibit 33.4)

33.25     Pentalpha SurveillanceLLC, as Operating Advisor of the Arizona Grand Resort & Spa Mortgage Loan(see Exhibit 33.5)

33.26     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the Cape MayHotels Mortgage Loan (see Exhibit 33.1)

33.27     Rialto Capital Advisors,LLC, as Special Servicer of the Cape May Hotels Mortgage Loan (see Exhibit33.2)

33.28     Wells Fargo Bank, National Association, as Trustee of the Cape May HotelsMortgage Loan (Omitted. See Explanatory Notes.)

33.29     Wells Fargo Bank, NationalAssociation, as Custodian of the Cape May Hotels Mortgage Loan (see Exhibit33.4)

33.30     Pentalpha SurveillanceLLC, as Operating Advisor of the Cape May Hotels Mortgage Loan (see Exhibit33.5)

33.31     KeyBank NationalAssociation, as Primary Servicer of the Soho-Tribeca Grand Hotel PortfolioMortgage Loan

33.32     C-III Asset ManagementLLC, as Special Servicer of the Soho-Tribeca Grand Hotel Portfolio MortgageLoan

33.33     Wells Fargo Bank, National Association, as Trustee of the Soho-Tribeca GrandHotel Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.34     Wells Fargo Bank, NationalAssociation, as Custodian of the Soho-Tribeca Grand Hotel Portfolio MortgageLoan (see Exhibit 33.4)

33.35     Park Bridge LenderServices LLC, as Operating Advisor of the Soho-Tribeca Grand Hotel PortfolioMortgage Loan

33.36     KeyBank NationalAssociation, as Primary Servicer of the Westfield Trumbull Mortgage Loan (seeExhibit 33.31)

33.37     C-III Asset ManagementLLC, as Special Servicer of the Westfield Trumbull Mortgage Loan (see Exhibit33.32)

33.38     Wells Fargo Bank, National Association, as Trustee of the Westfield TrumbullMortgage Loan (Omitted. See Explanatory Notes.)

33.39     Wells Fargo Bank, NationalAssociation, as Custodian of the Westfield Trumbull Mortgage Loan (see Exhibit33.4)

33.40     Park Bridge LenderServices LLC, as Operating Advisor of the Westfield Trumbull Mortgage Loan (seeExhibit 33.35)

33.41     Wells Fargo Bank,National Association, as Primary Servicer of the Westfield Wheaton MortgageLoan

33.42     Rialto Capital Advisors,LLC, as Special Servicer of the Westfield Wheaton Mortgage Loan (see Exhibit33.2)

33.43     Wilmington Trust, National Association, as Trustee of the Westfield Wheaton MortgageLoan (Omitted. See Explanatory Notes.)

33.44     Wells Fargo Bank, NationalAssociation, as Custodian of the Westfield Wheaton Mortgage Loan (see Exhibit33.4)

33.45     Park Bridge LenderServices LLC, as Operating Advisor of the Westfield Wheaton Mortgage Loan (seeExhibit 33.35)

33.46     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Westfield WheatonMortgage Loan

33.47     National Tax Search, LLC,as Servicing Function Participant of the Westfield Wheaton Mortgage Loan

33.48     Wells Fargo Bank,National Association, as Primary Servicer of the Sterling & MilagroApartments Mortgage Loan (see Exhibit 33.41)

33.49     Rialto Capital Advisors,LLC, as Special Servicer of the Sterling & Milagro Apartments Mortgage Loan(see Exhibit 33.2)

33.50     Wilmington Trust, National Association, as Trustee of the Sterling &Milagro Apartments Mortgage Loan (Omitted. See Explanatory Notes.)

33.51     Wells Fargo Bank, NationalAssociation, as Custodian of the Sterling & Milagro Apartments MortgageLoan (see Exhibit 33.4)

33.52     Park Bridge LenderServices LLC, as Operating Advisor of the Sterling & Milagro ApartmentsMortgage Loan (see Exhibit 33.35)

33.53     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Sterling &Milagro Apartments Mortgage Loan (see Exhibit 33.46)

33.54     National Tax Search, LLC,as Servicing Function Participant of the Sterling & Milagro ApartmentsMortgage Loan (see Exhibit 33.47)

33.55     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the WPC DepartmentStore Portfolio Mortgage Loan (see Exhibit 33.1)

33.56     LNR Partners, LLC, as Special Servicer of the WPC Department Store PortfolioMortgage Loan (Omitted. See Explanatory Notes.)

33.57     U.S. Bank National Association, as Trustee and Custodian of the WPC DepartmentStore Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.58     Pentalpha SurveillanceLLC, as Trust Advisor of the WPC Department Store Portfolio Mortgage Loan (seeExhibit 33.5)

34          Attestation reports onassessment of compliance with servicing criteria for asset-backed securities.

34.1       Midland Loan Services, aDivision of PNC Bank, National Association, as Master Servicer

34.2       Rialto Capital Advisors,LLC, as Special Servicer

34.3       Wells Fargo Bank, NationalAssociation, as Trustee and Certificate Administrator

34.4       Wells Fargo Bank, NationalAssociation, as Custodian

34.5       Pentalpha SurveillanceLLC, as Operating Advisor

34.6       Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the CharlesRiver Plaza North Mortgage Loan (see Exhibit 34.1)

34.7       AEGON USA Realty Advisors,LLC, as Special Servicer of the Charles River Plaza North Mortgage Loan

34.8       Wells Fargo Bank, National Association, as Trustee of the Charles River PlazaNorth Mortgage Loan (Omitted. See Explanatory Notes.)

34.9       Wells Fargo Bank, NationalAssociation, as Custodian of the Charles River Plaza North Mortgage Loan (seeExhibit 34.4)

34.10     Pentalpha SurveillanceLLC, as Operating Advisor of the Charles River Plaza North Mortgage Loan (seeExhibit 34.5)

34.11     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the StarwoodCapital Extended Stay Portfolio Mortgage Loan (see Exhibit 34.1)

34.12     Rialto Capital Advisors,LLC, as Special Servicer of the Starwood Capital Extended Stay PortfolioMortgage Loan (see Exhibit 34.2)

34.13     Wells Fargo Bank, National Association, as Trustee of the Starwood CapitalExtended Stay Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.14     Wells Fargo Bank, NationalAssociation, as Custodian of the Starwood Capital Extended Stay PortfolioMortgage Loan (see Exhibit 34.4)

34.15     Pentalpha SurveillanceLLC, as Operating Advisor of the Starwood Capital Extended Stay PortfolioMortgage Loan (see Exhibit 34.5)

34.16     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of The Mall ofNew Hampshire Mortgage Loan (see Exhibit 34.1)

34.17     Rialto Capital Advisors,LLC, as Special Servicer of The Mall of New Hampshire Mortgage Loan (seeExhibit 34.2)

34.18     Wells Fargo Bank, National Association, as Trustee of The Mall of New HampshireMortgage Loan (Omitted. See Explanatory Notes.)

34.19     Wells Fargo Bank, NationalAssociation, as Custodian of The Mall of New Hampshire Mortgage Loan (seeExhibit 34.4)

34.20     Pentalpha SurveillanceLLC, as Operating Advisor of The Mall of New Hampshire Mortgage Loan (seeExhibit 34.5)

34.21     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the ArizonaGrand Resort & Spa Mortgage Loan (see Exhibit 34.1)

34.22     Rialto Capital Advisors,LLC, as Special Servicer of the Arizona Grand Resort & Spa Mortgage Loan(see Exhibit 34.2)

34.23     Wells Fargo Bank, National Association, as Trustee of the Arizona Grand Resort& Spa Mortgage Loan (Omitted. See Explanatory Notes.)

34.24     Wells Fargo Bank, NationalAssociation, as Custodian of the Arizona Grand Resort & Spa Mortgage Loan(see Exhibit 34.4)

34.25     Pentalpha SurveillanceLLC, as Operating Advisor of the Arizona Grand Resort & Spa Mortgage Loan(see Exhibit 34.5)

34.26     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the Cape MayHotels Mortgage Loan (see Exhibit 34.1)

34.27     Rialto Capital Advisors,LLC, as Special Servicer of the Cape May Hotels Mortgage Loan (see Exhibit34.2)

34.28     Wells Fargo Bank, National Association, as Trustee of the Cape May HotelsMortgage Loan (Omitted. See Explanatory Notes.)

34.29     Wells Fargo Bank, NationalAssociation, as Custodian of the Cape May Hotels Mortgage Loan (see Exhibit34.4)

34.30     Pentalpha SurveillanceLLC, as Operating Advisor of the Cape May Hotels Mortgage Loan (see Exhibit34.5)

34.31     KeyBank NationalAssociation, as Primary Servicer of the Soho-Tribeca Grand Hotel PortfolioMortgage Loan

34.32     C-III Asset ManagementLLC, as Special Servicer of the Soho-Tribeca Grand Hotel Portfolio MortgageLoan

34.33     Wells Fargo Bank, National Association, as Trustee of the Soho-Tribeca GrandHotel Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.34     Wells Fargo Bank, NationalAssociation, as Custodian of the Soho-Tribeca Grand Hotel Portfolio MortgageLoan (see Exhibit 34.4)

34.35     Park Bridge LenderServices LLC, as Operating Advisor of the Soho-Tribeca Grand Hotel PortfolioMortgage Loan

34.36     KeyBank NationalAssociation, as Primary Servicer of the Westfield Trumbull Mortgage Loan (seeExhibit 34.31)

34.37     C-III Asset ManagementLLC, as Special Servicer of the Westfield Trumbull Mortgage Loan (see Exhibit34.32)

34.38     Wells Fargo Bank, National Association, as Trustee of the Westfield TrumbullMortgage Loan (Omitted. See Explanatory Notes.)

34.39     Wells Fargo Bank, NationalAssociation, as Custodian of the Westfield Trumbull Mortgage Loan (see Exhibit34.4)

34.40     Park Bridge LenderServices LLC, as Operating Advisor of the Westfield Trumbull Mortgage Loan (seeExhibit 34.35)

34.41     Wells Fargo Bank,National Association, as Primary Servicer of the Westfield Wheaton MortgageLoan

34.42     Rialto Capital Advisors,LLC, as Special Servicer of the Westfield Wheaton Mortgage Loan (see Exhibit34.2)

34.43     Wilmington Trust, National Association, as Trustee of the Westfield WheatonMortgage Loan (Omitted. See Explanatory Notes.)

34.44     Wells Fargo Bank, NationalAssociation, as Custodian of the Westfield Wheaton Mortgage Loan (see Exhibit34.4)

34.45     Park Bridge LenderServices LLC, as Operating Advisor of the Westfield Wheaton Mortgage Loan (seeExhibit 34.35)

34.46     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the WestfieldWheaton Mortgage Loan

34.47     National Tax Search, LLC,as Servicing Function Participant of the Westfield Wheaton Mortgage Loan

34.48     Wells Fargo Bank,National Association, as Primary Servicer of the Sterling & MilagroApartments Mortgage Loan (see Exhibit 34.41)

34.49     Rialto Capital Advisors,LLC, as Special Servicer of the Sterling & Milagro Apartments Mortgage Loan(see Exhibit 34.2)

34.50     Wilmington Trust, National Association, as Trustee of the Sterling &Milagro Apartments Mortgage Loan (Omitted. See Explanatory Notes.)

34.51     Wells Fargo Bank, NationalAssociation, as Custodian of the Sterling & Milagro Apartments MortgageLoan (see Exhibit 34.4)

34.52     Park Bridge LenderServices LLC, as Operating Advisor of the Sterling & Milagro ApartmentsMortgage Loan (see Exhibit 34.35)

34.53     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Sterling &Milagro Apartments Mortgage Loan (see Exhibit 34.46)

34.54     National Tax Search, LLC,as Servicing Function Participant of the Sterling & Milagro ApartmentsMortgage Loan (see Exhibit 34.47)

34.55     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the WPCDepartment Store Portfolio Mortgage Loan (see Exhibit 34.1)

34.56     LNR Partners, LLC, as Special Servicer of the WPC Department Store PortfolioMortgage Loan (Omitted. See Explanatory Notes.)

34.57     U.S. Bank National Association, as Trustee and Custodian of the WPC DepartmentStore Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.58     Pentalpha SurveillanceLLC, as Trust Advisor of the WPC Department Store Portfolio Mortgage Loan (seeExhibit 34.5)

35          Servicer compliance statements.

35.1       Midland Loan Services, aDivision of PNC Bank, National Association, as Master Servicer

35.2       Rialto Capital Advisors,LLC, as Special Servicer

35.3       Wells Fargo Bank, NationalAssociation, as Certificate Administrator

35.4       Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the CharlesRiver Plaza North Mortgage Loan (see Exhibit 35.1)

35.5       AEGON USA Realty Advisors, LLC, as Special Servicer of the Charles River PlazaNorth Mortgage Loan (Omitted. See Explanatory Notes.)

35.6       Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the StarwoodCapital Extended Stay Portfolio Mortgage Loan (see Exhibit 35.1)

35.7       Rialto Capital Advisors,LLC, as Special Servicer of the Starwood Capital Extended Stay PortfolioMortgage Loan (see Exhibit 35.2)

35.8       Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of The Mall ofNew Hampshire Mortgage Loan (see Exhibit 35.1)

35.9       Rialto Capital Advisors,LLC, as Special Servicer of The Mall of New Hampshire Mortgage Loan (seeExhibit 35.2)

35.10     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the ArizonaGrand Resort & Spa Mortgage Loan (see Exhibit 35.1)

35.11     Rialto Capital Advisors,LLC, as Special Servicer of the Arizona Grand Resort & Spa Mortgage Loan(see Exhibit 35.2)

35.12     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the Cape MayHotels Mortgage Loan (see Exhibit 35.1)

35.13     Rialto Capital Advisors, LLC,as Special Servicer of the Cape May Hotels Mortgage Loan (see Exhibit 35.2)

35.14     KeyBank National Association, as Primary Servicer of the Soho-Tribeca GrandHotel Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

35.15     C-III Asset Management LLC, as Special Servicer of the Soho-Tribeca Grand HotelPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

35.16     KeyBank National Association, as Primary Servicer of the Westfield TrumbullMortgage Loan (Omitted. See Explanatory Notes.)

35.17     C-III Asset Management LLC, as Special Servicer of the Westfield TrumbullMortgage Loan (Omitted. See Explanatory Notes.)

35.18     Wells Fargo Bank,National Association, as Primary Servicer of the Westfield Wheaton MortgageLoan

35.19     Rialto Capital Advisors,LLC, as Special Servicer of the Westfield Wheaton Mortgage Loan (see Exhibit35.2)

35.20     Wells Fargo Bank,National Association, as Primary Servicer of the Sterling & MilagroApartments Mortgage Loan (see Exhibit 35.18)

35.21     Rialto Capital Advisors,LLC, as Special Servicer of the Sterling & Milagro Apartments Mortgage Loan(see Exhibit 35.2)

35.22     Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer of the WPCDepartment Store Portfolio Mortgage Loan (see Exhibit 35.1)

35.23     LNR Partners, LLC, as Special Servicer of the WPC Department Store PortfolioMortgage Loan (Omitted. See Explanatory Notes.)

99.1       MortgageLoan Purchase Agreement, dated as of August 1, 2015, between Credit SuisseFirst Boston Mortgage Securities Corp. and Column Financial, Inc. (filed asExhibit 99.1 to the registrant’s Current Report on Form 8-K filed on August 18,2015 under Commission File No. 333-199921-03 and incorporated by referenceherein)

99.2       MortgageLoan Purchase Agreement, dated as of August 1, 2015, between Credit SuisseFirst Boston Mortgage Securities Corp. and UBS Real Estate Securities Inc.(filed as Exhibit 99.2 to the registrant’s Current Report on Form 8-K filed onAugust 18, 2015 under Commission File No. 333-199921-03 and incorporated byreference herein)

99.3       MortgageLoan Purchase Agreement, dated as of August 1, 2015, between Credit SuisseFirst Boston Mortgage Securities Corp. and The Bank of New York Mellon (filedas Exhibit 99.3 to the registrant’s Current Report on Form 8-K filed on August18, 2015 under Commission File No. 333-199921-03 and incorporated by referenceherein)

99.4       MortgageLoan Purchase Agreement, dated as of August 1, 2015, between Credit SuisseFirst Boston Mortgage Securities Corp. and Benefit Street Partners CRE FinanceLLC (filed as Exhibit 99.4 to the registrant’s Current Report on Form 8-K filedon August 18, 2015 under Commission File No. 333-199921-03 and incorporated byreference herein)

99.5       MortgageLoan Purchase Agreement, dated as of August 1, 2015, between Credit Suisse FirstBoston Mortgage Securities Corp. and The Bancorp Bank (filed as Exhibit 99.5 tothe registrant’s Current Report on Form 8-K filed on August 18, 2015 underCommission File No. 333-199921-03 and incorporated by reference herein)

(b)         The exhibits required to be filed by the Registrant pursuant to Item 601 ofRegulation S-K are listed above.

(c)         Not Applicable.

 

**SIGNATURES**

Pursuant to the requirements of Section 13 or 15(d) of theSecurities Exchange Act of 1934, the registrant has duly caused this report tobe signed on its behalf by the undersigned, thereunto duly authorized.

Credit Suisse First Boston MortgageSecurities Corp.(Depositor)

/s/ OliverNisenson

OliverNisenson, Director

(senior officer in charge ofsecuritization of the depositor)

Date: March 17, 2020