**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, 2022or**

**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: 333-199921-01**

**Central Index Key Number of the issuing entity:0001634172**

**CSAIL 2015-C1 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: 0001576832**

**MC-Five Mile Commercial MortgageFinance LLC**

**(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)**

** **

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

**Benefit Street Partners CRE FinanceLLC**

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

**(formerly known as BSPCCLender L.L.C.)**

** **

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

**the issuing entity)** | **38-3955488**

**38-3955489**

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

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

**c/o Computershare Trust Company, National Association, as agent for**

**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 every Interactive Data File required to be submitted pursuant toRule 405 of Regulation S-T (Section 232.405 of this chapter) during thepreceding 12 months (or for such shorter period that the registrant wasrequired to submit such files).

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 “emerginggrowth company” in Rule 12b-2 of the Exchange Act.

Large acceleratedfiler        o                                                                                                       Acceleratedfiler                                     o

Non-acceleratedfiler          ⌧  (Do not check if asmaller reporting company)                          Smaller reporting company                    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 has filed areport on and attestation to its management’s assessment of the effectivenessof its internal control over financial reporting under Section 404(b) of theSarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firmthat prepared or issued its audit report. o

If securities are registered pursuant to Section 12(b) of theAct, indicate by check mark whether the financial statements of the registrantincluded in the filing reflect the correction of an error to previously issuedfinancial statements. o

Indicate by check mark whether any of those error correctionsare restatements that required a recovery analysis of incentive-basedcompensation received by any of the registrant’s executive officers during therelevant recovery period pursuant to §240.10D-1(b). 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 securitiesunder a 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 Soho-Tribeca Grand Hotel PortfolioMortgage Loan, the Westfield Trumbull Mortgage Loan and the Bayshore MallMortgage Loan, which constituted approximately 9.1%, 6.4% and 1.9%,respectively, of the asset pool of the issuing entity as of its cut-off date,are each an asset of the issuing entity and are each part of a loan combinationthat includes (a) with respect to the Soho-Tribeca Grand Hotel PortfolioMortgage Loan, two other *pari passu* loans and one subordinate companionloan, each of which are not assets of the issuing entity, (b) with respect tothe Westfield Trumbull Mortgage Loan, two other *pari passu* loans, whichare not assets of the issuing entity and (c) with respect to the Bayshore MallMortgage Loan, one other *pari passu* loan, which is not an asset of theissuing entity. These loan combinations, including the Soho-Tribeca Grand HotelPortfolio Mortgage Loan, the Westfield Trumbull Mortgage Loan and the BayshoreMall Mortgage Loan, are being serviced and administered pursuant to the Poolingand Servicing Agreement, which is incorporated by reference as Exhibit 4.1 tothis 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 500 Fifth Avenue Mortgage Loan and the St.Louis Premium Outlets Mortgage Loan, which constituted approximately 8.2% and2.1%, respectively, of the asset pool of the issuing entity as of its cut-offdate.  The 500 Fifth Avenue Mortgage Loan and the St. Louis PremiumOutlets Mortgage Loan are each an asset of the issuing entity and are each partof a loan combination that includes (a) with respect to the 500 Fifth AvenueMortgage Loan, one other *pari passu* loan, which is not an asset of theissuing entity or (b) with respect to the St. Louis Premium Outlets MortgageLoan, two other *pari passu* loans, which are not assets of the issuingentity. A *pari passu* portion of each loan combination was securitized inthe JPMBB Commercial Mortgage Securities Trust 2014-C26 transaction, CommissionFile Number 333-190246-11 (the “JPMBB 2014-C26 Transaction”). These loancombinations, including the 500 Fifth Avenue Mortgage Loan and the St. LouisPremium Outlets Mortgage Loan, are being serviced and administered pursuant tothe pooling and servicing agreement for the JPMBB 2014-C26 Transaction, whichis incorporated by reference 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, whichconstituted approximately 3.5% of the asset pool of the issuing entity as ofits cut-off date.  The Westfield Wheaton Mortgage Loan is an asset of theissuing entity and is part of a loan combination that includes the WestfieldWheaton Mortgage Loan and two other *pari passu* loans, which are notassets of the issuing entity. This loan combination, including the WestfieldWheaton Mortgage Loan, was serviced under the Pooling and Servicing Agreementfor the issuing entity prior to the closing of the securitization of a *paripassu* portion of the Westfield Wheaton loan combination in the CSAIL2015-C2 Commercial Mortgage Trust transaction, Commission File Number333-199921-02 (the “CSAIL 2015-C2 Transaction”).  After the closingof the CSAIL 2015-C2 Transaction on May 20, 2015, this loan combination,including the Westfield Wheaton Mortgage Loan was, and will continue to be,serviced and administered pursuant to the pooling and servicing agreement withrespect to the CSAIL 2015-C2 Transaction, which is incorporated by reference asExhibit 4.3 to this Annual Report 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.

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. As a result, Wells Fargo Bank, NationalAssociation is a “servicer” as defined in Item 1108(a)(2)(iii) of RegulationAB, in the capacities described above, because it is servicing mortgage loansthat constituted 10% or more of the assets of the issuing entity as of itscut-off date. The assessments of compliance with applicable servicing criteria,accountants’ attestation reports and servicer compliance statements deliveredby Wells Fargo Bank, National Association in the capacities described above arelisted in the Exhibit Index.

Wells Fargo Bank, NationalAssociation is the custodian of the mortgage loans serviced under the Poolingand Servicing Agreement, the 500 Fifth Avenue Mortgage Loan, the WestfieldWheaton Mortgage Loan and the St. Louis Premium Outlets Mortgage Loan.  Asa result, Wells Fargo Bank, National Association is a servicing functionparticipant in the capacities described above, because it is servicing mortgageloans that constituted 5% or more of the assets of the issuing entity as of itscut-off date. The assessments of compliance with applicable servicing criteriaand accountants’ attestation reports delivered by Wells Fargo Bank, NationalAssociation in the capacities described above are listed in the Exhibit Index.

Park Bridge Lender Services LLC isthe operating advisor of the mortgage loans serviced under the Pooling andServicing Agreement and the Westfield Wheaton Mortgage Loan.  As a result,Park Bridge Lender Services 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 and accountants’attestation reports delivered by Park Bridge Lender Services LLC in thecapacities described above are listed in the Exhibit Index.

Midland Loan Services, a Divisionof PNC Bank, National Association is the primary servicer and special servicerof the 500 Fifth Avenue Mortgage Loan and the St. Louis Premium OutletsMortgage Loan. As a result, Midland Loan Services, a Division of PNC Bank,National Association is a “servicer” as defined in Item 1108(a)(2)(iii) ofRegulation AB, in the capacities described above, because it is servicingmortgage loans that constituted 10% or more of the assets of the issuing entityas of its cut-off date. The assessments of compliance with applicable servicingcriteria, accountants’ attestation reports and servicer compliance statementsdelivered by Midland Loan Services, a Division of PNC Bank, NationalAssociation in the capacities described above are listed in the Exhibit Index.

Pentalpha Surveillance LLC is thesenior trust advisor of the 500 Fifth Avenue Mortgage Loan and the St. LouisPremium Outlets Mortgage Loan.  As a result, Pentalpha Surveillance LLC isa servicing function participant in the capacities described above, because itis 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 byPentalpha Surveillance LLC in the capacities described above are listed in theExhibit Index.

Wells Fargo Bank, NationalAssociation acts as trustee of the Soho-Tribeca Grand Hotel Portfolio MortgageLoan, the Westfield Trumbull Mortgage Loan, the Bayshore Mall Mortgage Loan,the 500 Fifth Avenue Mortgage Loan and the St. Louis Premium Outlets MortgageLoan.  Pursuant to the Pooling and Servicing Agreement and the pooling andservicing agreement for the JPMBB 2014-C26 Transaction, the trustee is requiredto provide an assessment of compliance with applicable servicing criteriasolely with respect to Item 1122(d)(2)(iii) of Regulation AB (regardingadvances 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 Soho-Tribeca Grand HotelPortfolio Mortgage Loan, the Westfield Trumbull Mortgage Loan, the BayshoreMall Mortgage Loan, the 500 Fifth Avenue Mortgage Loan and the St. LouisPremium Outlets Mortgage Loan have delivered one or more assessments ofcompliance with respect to Item 1122(d)(2)(iii) of Regulation AB.

Wilmington Trust, NationalAssociation acts as trustee of the Westfield Wheaton Mortgage Loan. Pursuant to the pooling and servicing agreement for the CSAIL 2015-C2Transaction, 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 Westfield Wheaton Mortgage Loan have delivered one or more assessments ofcompliance with respect to Item 1122(d)(2)(iii) of Regulation AB.

This Annual Report on Form 10-Kincludes assessments of compliance with applicable servicing criteria andaccountants’ attestation reports from CoreLogic Solutions, LLC.  Thisentity was engaged by the primary servicer of the Westfield Wheaton MortgageLoan to remit tax payments received from the escrow accounts of borrowers tolocal taxing authorities, to report tax amounts due, to verify tax parcelinformation, and to verify non-escrow tax payments. These servicing functionsare included within the servicing criteria set forth in Items 1122(d)(4)(xi)and 1122(d)(4)(xii) of Regulation AB.  Therefore, under theprinciples-based definition of “servicer” set forth in Item 1101(j) ofRegulation AB that looks to the functions that an entity performs, this vendoris a “servicer” for the purposes of Item 1122 of Regulation AB.  *See*Compliance and Disclosure Interpretations, Section 301.01 (Item 1101(j)).

This Annual Report on Form 10-Kincludes an assessment of compliance with applicable servicing criteria,accountants’ attestation report and servicer compliance statement fromComputershare Trust Company, National Association (“CTCNA”).  CTCNAwas engaged by Wells Fargo Bank, National Association (“Wells Fargo”),in its capacity as certificate administrator and custodian, to perform certainspecified servicing functions identified in the assessment of compliance withapplicable servicing criteria and accountants’ attestation reports.  WellsFargo engaged CTCNA in connection with the sale of Wells Fargo’s corporatetrust services business to CTCNA and its affiliates.  Further, under theprinciples-based definition of “servicer” set forth in Item 1101(j) ofRegulation AB that looks to the functions that an entity performs, this partyis a “servicer” for the purposes of Item 1123 of Regulation AB.  SeeCompliance 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 500 Fifth Avenue Mortgage Loan, the St. Louis PremiumOutlets Mortgage Loan and the Westfield Wheaton Mortgage Loan are omitted fromthis Annual Report on Form 10-K as the certificate administrator pursuant tothe related pooling and servicing agreement or trust and servicing agreementdoes not perform any activities that address servicing criteria with respect tothe issuing 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 combination that includes the Westfield Wheaton Mortgage Loan, (i) thereport on assessment of compliance with servicing criteria and attestationreport on assessment of compliance with servicing criteria of Rialto CapitalAdvisors, LLC as special servicer of the Westfield Wheaton Mortgage Loan,listed on the Exhibit Index are omitted from this Annual Report on Form 10-K asthey are not required to be included on this Annual Report on Form 10-K perInstruction 3 to Item 1122 of Regulation AB because it is a party performingactivities that address servicing criteria relating to 5% or less of the assetsof the issuing entity; and (ii) the servicer compliance statement of RialtoCapital Advisors, LLC as special servicer of the Westfield Wheaton MortgageLoan, listed on the Exhibit Index is omitted from this Annual Report on Form10-K as it is not required by Item 1123 of Regulation AB to be included on thisAnnual Report on Form 10-K because it is an unaffiliated party that is not a“servicer” that meets the criteria in Item 1108(a)(2)(i) through (iii) ofRegulation 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.**

[Reserved].

**Item 7.  Management’s Discussion and Analysis ofFinancial Condition 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.

**Item 9C.  Disclosure Regarding Foreign Jurisdictionsthat Prevent Inspections.**

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 Accountant 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 external creditenhancement 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 this transactionas 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, as Trustee,Certificate Administrator and Custodian.

In December 2014, Phoenix Light SFLimited (Phoenix Light) and certain related entities filed a complaint in theUnited States District Court for the Southern District of New York allegingclaims against Wells Fargo Bank, N.A., in its capacity as trustee for a numberof residential mortgage-backed securities (RMBS) trusts. Complaints raisingsimilar allegations have been filed by Commerzbank AG in the Southern Districtof New York and by IKB International and IKB Deutsche Industriebank in New Yorkstate court. In each case, the plaintiffs allege that Wells Fargo Bank, N.A.,as trustee, caused losses to investors, and plaintiffs assert causes of actionbased upon, among other things, the trustee’s alleged failure to notify andenforce repurchase obligations of mortgage loan sellers for purported breachesof representations and warranties, notify investors of alleged events ofdefault, and abide by appropriate standards of care following alleged events ofdefault. In July 2022, the district court dismissed Phoenix Light’s claims andcertain of the claims asserted by Commerzbank AG, and subsequently enteredjudgment in each case in favor of Wells Fargo Bank, N.A. In August 2022,Phoenix Light and Commerzbank AG appealed the district court’s decision to theUnited States Court of Appeals for the Second Circuit. The Company previouslysettled two class actions filed by institutional investors and an action filedby the National Credit Union Administration with similar allegations. Inaddition, Park Royal I LLC and Park Royal II LLC have filed substantiallysimilar lawsuits in New York state court alleging Wells Fargo Bank, N.A., astrustee, failed to take appropriate actions upon learning of defective mortgageloan documentation.

**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 March 20, 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 500 Fifth Avenue Mortgage Loanand the St. Louis Premium Outlets Mortgage Loan, which are being serviced andadministered pursuant to the pooling and servicing agreement for the JPMBB2014-C26 Transaction, are attached hereto under Item 15 to this Annual Reporton Form 10-K. Attached as Exhibit AA to the pooling and servicing agreement forthe JPMBB 2014-C26 Transaction incorporated by reference as Exhibit 4.2 to thisAnnual Report on Form 10-K is a chart identifying the entities participating ina servicing function for the JPMBB 2014-C26 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 Westfield Wheaton Mortgage Loan,which is being serviced and administered pursuant to the pooling and servicingagreement for the CSAIL 2015-C2 Transaction, are attached hereto under Item 15to this Annual Report on Form 10-K. Attached as Exhibit O to the pooling andservicing agreement for the CSAIL 2015-C2 Transaction incorporated by referenceas Exhibit 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 report on assessment of compliance for the twelvemonths ended December 31, 2022, furnished pursuant to Item 1122 of RegulationAB by KeyBank National Association (“KeyBank”), as servicer, discloses that thefollowing material instance of noncompliance occurred with respect to itsplatform:

The examination performed by Ernst & Young LLP identifiedan instance of material noncompliance with the servicing criteria set forth inItem 1122(d)(4)(ix) of Regulation AB applicable to KeyBank during the yearended December 31, 2022. During compliance testing, it was discovered, that notall FlexARM loan mortgagors were offered loan rates within 45-60 days before therate change date, as required per the related pool asset documents. Per therelated note, if the holder fails to offer a loan rate within 45-60 days of anychange date a margin of 2.25% is to be used. Given the notification was notmade to the borrowers, a 3% margin was incorrectly applied. The noncompliancein Item 1122 (d)(4)(ix) is related to a servicing portfolio which is whollyowned by the investor and is not held in a publicly traded security.

The following remediation procedures have been initiated byKeyBank: (i) the impacted mortgage loans are currently in the process of beingidentified, (ii) investor contact has been initiated, (iii) corrective actionsare being considered and will be tracked and monitored by senior management,(iv) procedures will be reviewed and revised, if necessary, to include newtracking and action steps to prevent this situation from recurring in thefuture, and (v) training will be provided to the relevant staff members toprevent a recurrence.

**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. Exhibit and Financial Statement Schedules.**

(a) The following is a list of documents filed as part ofthis Annual Report on Form 10-K:

(1) Not applicable

(2) Not applicable

(3) See below

4.1           Pooling and Servicing Agreement, dated as of March 1,2015, by and among Credit Suisse First Boston Mortgage Securities Corp., asDepositor, KeyBank National Association, as Master Servicer, C-III AssetManagement LLC, as Special Servicer, Park Bridge Lender Services LLC, asOperating Advisor, Wells Fargo Bank, National Association, as CertificateAdministrator and Wells Fargo Bank, National Association, as Trustee (filed asExhibit 4.1 to the registrant’s Current Report on Form 8-K/A filed on March 27,2015 under Commission File No. 333-199921-01 and incorporated by referenceherein).

4.2           Pooling and Servicing Agreement, dated as of December 1,2014, by and among J.P. Morgan Chase Commercial Mortgage Securities Corp., asDepositor, Midland Loan Services, a Division of PNC Bank, National Association,as Master Servicer and Special Servicer, Wells Fargo Bank, NationalAssociation, as Certificate Administrator and Trustee and PentalphaSurveillance LLC, as Senior Trust Advisor (filed as Exhibit 4.2 to theregistrant’s Current Report on Form 8-K filed on March 20, 2015 underCommission File No. 333-199921-01 and incorporated by reference herein).

4.3           Pooling and Servicing Agreement, dated as of May 1, 2015,by and among Credit Suisse First Boston Mortgage Securities Corp., asDepositor, Wells Fargo Bank, National Association, as Master Servicer, RialtoCapital Advisors, LLC, as Special Servicer, Park Bridge Lender Services LLC, asOperating Advisor, Wells Fargo Bank, National Association, as CertificateAdministrator and Wilmington Trust, National Association, as Trustee (filed asExhibit 4.1 to the registrant’s Current Report on Form 8-K filed on May 20,2015 under Commission File No. 333-199921-01 and incorporated by referenceherein).

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

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

33.1         KeyBank National Association, as Master Servicer

33.2        Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer

33.3        Wells Fargo Bank, National Association, as Trusteeand Certificate Administrator

33.4        Wells Fargo Bank, National Association, asCustodian

33.5        Park Bridge Lender Services LLC, as OperatingAdvisor

33.6        Berkadia Commercial Mortgage LLC, as PrimaryServicer

33.7        Computershare Trust Company, National Association,as Servicing Function Participant for the Trustee and Certificate Administrator

33.8        Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian

33.9        KeyBank National Association, as Primary Servicerof the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit 33.1)

33.10      Greystone Servicing Company LLC, as SpecialServicer of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit33.2)

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

33.12      Wells Fargo Bank, National Association, asCustodian of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit33.4)

33.13      Park Bridge Lender Services LLC, as OperatingAdvisor of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit33.5)

33.14      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 33.8)

33.15      KeyBank National Association, as Primary Servicerof the Westfield Trumbull Mortgage Loan (see Exhibit 33.1)

33.16      Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer of the Westfield TrumbullMortgage Loan (see Exhibit 33.2)

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

33.18      Wells Fargo Bank, National Association, asCustodian of the Westfield Trumbull Mortgage Loan (see Exhibit 33.4)

33.19      Park Bridge Lender Services LLC, as OperatingAdvisor of the Westfield Trumbull Mortgage Loan (see Exhibit 33.5)

33.20      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 33.8)

33.21      KeyBank National Association, as Primary Servicerof the Bayshore Mall Mortgage Loan (see Exhibit 33.1)

33.22      Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer of the Bayshore Mall MortgageLoan (see Exhibit 33.2)

33.23      Wells Fargo Bank, National Association, as Trustee of the Bayshore Mall MortgageLoan (Omitted. See Explanatory Notes.)

33.24      Wells Fargo Bank, National Association, asCustodian of the Bayshore Mall Mortgage Loan (see Exhibit 33.4)

33.25      Park Bridge Lender Services LLC, as OperatingAdvisor of the Bayshore Mall Mortgage Loan (see Exhibit 33.5)

33.26      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 33.8)

33.27      Midland Loan Services, a Division of PNC Bank,National Association, as Primary Servicer of the 500 Fifth Avenue Mortgage Loan

33.28      Midland Loan Services, a Division of PNC Bank,National Association, as Special Servicer of the 500 Fifth Avenue Mortgage Loan(see Exhibit 33.27)

33.29      Wells Fargo Bank, National Association, as Trustee of the 500 Fifth AvenueMortgage Loan (Omitted. See Explanatory Notes.)

33.30      Wells Fargo Bank, National Association, asCustodian of the 500 Fifth Avenue Mortgage Loan (see Exhibit 33.4)

33.31      Pentalpha Surveillance LLC, as Senior TrustAdvisor of the 500 Fifth Avenue Mortgage Loan

33.32      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 33.8)

33.33      Midland Loan Services, a Division of PNC Bank,National Association, as Primary Servicer of the St. Louis Premium OutletsMortgage Loan (see Exhibit 33.27)

33.34      Midland Loan Services, a Division of PNC Bank,National Association, as Special Servicer of the St. Louis Premium OutletsMortgage Loan (see Exhibit 33.27)

33.35      Wells Fargo Bank, National Association, as Trustee of the St. Louis PremiumOutlets Mortgage Loan (Omitted. See Explanatory Notes.)

33.36      Wells Fargo Bank, National Association, asCustodian of the St. Louis Premium Outlets Mortgage Loan (see Exhibit 33.4)

33.37      Pentalpha Surveillance LLC, as Senior TrustAdvisor of the St. Louis Premium Outlets Mortgage Loan (see Exhibit 33.31)

33.38      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 33.8)

33.39      Wells Fargo Bank, National Association, as PrimaryServicer of the Westfield Wheaton Mortgage Loan

33.40      Rialto Capital Advisors, LLC, as Special Servicer of the Westfield WheatonMortgage Loan (Omitted. See Explanatory Notes.)

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

33.42      Wells Fargo Bank, National Association, as Custodianof the Westfield Wheaton Mortgage Loan (see Exhibit 33.4)

33.43      Park Bridge Lender Services LLC, as OperatingAdvisor of the Westfield Wheaton Mortgage Loan (see Exhibit 33.5)

33.44      CoreLogic Solutions, LLC, as Servicing FunctionParticipant of the Westfield Wheaton Mortgage Loan

33.45      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 33.8)

34           Attestationreports on assessment of compliance with servicing criteria for asset-backedsecurities.

34.1        KeyBank National Association, as Master Servicer

34.2        Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer

34.3        Wells Fargo Bank, National Association, as Trusteeand Certificate Administrator

34.4        Wells Fargo Bank, National Association, asCustodian

34.5        Park Bridge Lender Services LLC, as OperatingAdvisor

34.6        Berkadia Commercial Mortgage LLC, as PrimaryServicer

34.7        Computershare Trust Company, National Association,as Servicing Function Participant for the Trustee and Certificate Administrator

34.8        Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian

34.9        KeyBank National Association, as Primary Servicerof the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit 34.1)

34.10      Greystone Servicing Company LLC, as SpecialServicer of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit34.2)

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

34.12      Wells Fargo Bank, National Association, asCustodian of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit34.4)

34.13      Park Bridge Lender Services LLC, as OperatingAdvisor of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit34.5)

34.14      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 34.8)

34.15      KeyBank National Association, as Primary Servicerof the Westfield Trumbull Mortgage Loan (see Exhibit 34.1)

34.16      Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer of the Westfield TrumbullMortgage Loan (see Exhibit 34.2)

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

34.18      Wells Fargo Bank, National Association, asCustodian of the Westfield Trumbull Mortgage Loan (see Exhibit 34.4)

34.19      Park Bridge Lender Services LLC, as OperatingAdvisor of the Westfield Trumbull Mortgage Loan (see Exhibit 34.5)

34.20      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 34.8)

34.21      KeyBank National Association, as Primary Servicerof the Bayshore Mall Mortgage Loan (see Exhibit 34.1)

34.22      Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer of the Bayshore Mall MortgageLoan (see Exhibit 34.2)

34.23      Wells Fargo Bank, National Association, as Trustee of the Bayshore MallMortgage Loan (Omitted. See Explanatory Notes.)

34.24      Wells Fargo Bank, National Association, asCustodian of the Bayshore Mall Mortgage Loan (see Exhibit 34.4)

34.25      Park Bridge Lender Services LLC, as OperatingAdvisor of the Bayshore Mall Mortgage Loan (see Exhibit 34.5)

34.26      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 34.8)

34.27      Midland Loan Services, a Division of PNC Bank,National Association, as Primary Servicer of the 500 Fifth Avenue Mortgage Loan

34.28      Midland Loan Services, a Division of PNC Bank,National Association, as Special Servicer of the 500 Fifth Avenue Mortgage Loan(see Exhibit 34.27)

34.29      Wells Fargo Bank, National Association, as Trustee of the 500 Fifth AvenueMortgage Loan (Omitted. See Explanatory Notes.)

34.30      Wells Fargo Bank, National Association, asCustodian of the 500 Fifth Avenue Mortgage Loan (see Exhibit 34.4)

34.31      Pentalpha Surveillance LLC, as Senior Trust Advisorof the 500 Fifth Avenue Mortgage Loan

34.32      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 34.8)

34.33      Midland Loan Services, a Division of PNC Bank,National Association, as Primary Servicer of the St. Louis Premium OutletsMortgage Loan (see Exhibit 34.27)

34.34      Midland Loan Services, a Division of PNC Bank, NationalAssociation, as Special Servicer of the St. Louis Premium Outlets Mortgage Loan(see Exhibit 34.27)

34.35      Wells Fargo Bank, National Association, as Trustee of the St. Louis PremiumOutlets Mortgage Loan (Omitted. See Explanatory Notes.)

34.36      Wells Fargo Bank, National Association, asCustodian of the St. Louis Premium Outlets Mortgage Loan (see Exhibit 34.4)

34.37      Pentalpha Surveillance LLC, as Senior Trust Advisorof the St. Louis Premium Outlets Mortgage Loan (see Exhibit 34.31)

34.38      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 34.8)

34.39      Wells Fargo Bank, National Association, as PrimaryServicer of the Westfield Wheaton Mortgage Loan

34.40      Rialto Capital Advisors, LLC, as Special Servicer of the Westfield WheatonMortgage Loan (Omitted. See Explanatory Notes.)

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

34.42      Wells Fargo Bank, National Association, asCustodian of the Westfield Wheaton Mortgage Loan (see Exhibit 34.4)

34.43      Park Bridge Lender Services LLC, as OperatingAdvisor of the Westfield Wheaton Mortgage Loan (see Exhibit 34.5)

34.44      CoreLogic Solutions, LLC, as Servicing FunctionParticipant of the Westfield Wheaton Mortgage Loan

34.45      Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian (see Exhibit 34.8)

35           Servicer compliance statements.

35.1        KeyBank National Association, as Master Servicer

35.2        Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer

35.3        Wells Fargo Bank, National Association, asCertificate Administrator

35.4        Computershare Trust Company, National Association,as Servicing Function Participant for the Certificate Administrator

35.5        Berkadia Commercial Mortgage LLC, as PrimaryServicer

35.6        KeyBank National Association, as Primary Servicerof the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit 35.1)

35.7        Greystone Servicing Company LLC, as SpecialServicer of the Soho-Tribeca Grand Hotel Portfolio Mortgage Loan (see Exhibit35.2)

35.8        KeyBank National Association, as Primary Servicerof the Westfield Trumbull Mortgage Loan (see Exhibit 35.1)

35.9        Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer of the Westfield TrumbullMortgage Loan (see Exhibit 35.2)

35.10      KeyBank National Association, as Primary Servicerof the Bayshore Mall Mortgage Loan (see Exhibit 35.1)

35.11      Greystone Servicing Company LLC (as successor toC-III Asset Management LLC), as Special Servicer of the Bayshore Mall MortgageLoan (see Exhibit 35.2)

35.12      Midland Loan Services, a Division of PNC Bank,National Association, as Primary Servicer of the 500 Fifth Avenue Mortgage Loan

35.13      Midland Loan Services, a Division of PNC Bank,National Association, as Special Servicer of the 500 Fifth Avenue Mortgage Loan(see Exhibit 35.12)

35.14      Midland Loan Services, a Division of PNC Bank,National Association, as Primary Servicer of the St. Louis Premium OutletsMortgage Loan (see Exhibit 35.12)

35.15      Midland Loan Services, a Division of PNC Bank,National Association, as Special Servicer of the St. Louis Premium OutletsMortgage Loan (see Exhibit 35.12)

35.16      Wells Fargo Bank, National Association, as PrimaryServicer of the Westfield Wheaton Mortgage Loan

35.17      Rialto Capital Advisors, LLC, as Special Servicer of the Westfield Wheaton MortgageLoan (Omitted. See Explanatory Notes.)

99.1         Mortgage Loan Purchase Agreement, dated as of March 1,2015, between Credit Suisse First Boston Mortgage Securities Corp. and ColumnFinancial, Inc. (filed as Exhibit 99.1 to the registrant’s Current Report onForm 8-K filed on March 20, 2015 under Commission File No. 333-199921-01 andincorporated by reference herein)

99.2         Mortgage Loan Purchase Agreement, dated as of March 1,2015, between Credit Suisse First Boston Mortgage Securities Corp. and MC-FiveMile Commercial Mortgage Finance LLC (filed as Exhibit 99.2 to the registrant’sCurrent Report on Form 8-K filed on March 20, 2015 under Commission File No.333-199921-01 and incorporated by reference herein)

99.3         Mortgage Loan Purchase Agreement, dated as of March 1,2015, between Credit Suisse First Boston Mortgage Securities Corp. and TheBancorp Bank (filed as Exhibit 99.3 to the registrant’s Current Report on Form8-K filed on March 20, 2015 under Commission File No. 333-199921-01 andincorporated by reference herein)

99.4         Mortgage Loan Purchase Agreement, dated as of March 1,2015, between Credit Suisse First Boston Mortgage Securities Corp. and BSPCCLender L.L.C. (filed as Exhibit 99.4 to the registrant’s Current Report on Form8-K filed on March 20, 2015 under Commission File No. 333-199921-01 andincorporated by reference herein)

99.5         Amended and Restated Subservicing Agreement, dated as ofJanuary 18, 2013, between KeyCorp Real Estate Capital Markets, Inc. andBerkadia Commercial Mortgage LLC (filed as Exhibit 99.5 to the registrant’sCurrent Report on Form 8-K filed on March 20, 2015 under Commission File No.333-199921-01 and incorporated by reference herein)

(b)   The exhibits required to be filed by theRegistrant pursuant to Item 601 of Regulation 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/ PatrickRemmert Jr.

Patrick A. Remmert Jr.,Authorized Signatory

(senior officer in charge ofsecuritization of the depositor)

Date: March 15, 2023