UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549





FORM 10-K







|☒ | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------------

For the fiscal year ended December 31, 2016

or



|☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from
 to

Commission file number

333-189017-07

(Commission File Number of issuing entity)

0001629716

(Central
Index Key Number of issuing entity)





Citigroup Commercial Mortgage Trust 2015-GC27

(Exact name of issuing entity as specified in its charter)

333-189017

(Commission File Number of depositor)

0001258361

(Central
Index Key Number of depositor)

Citigroup Commercial Mortgage Securities Inc.

(Exact name of depositor as specified in its charter)

Citigroup Global Markets Realty Corp.

(Central Index Key Number: 0001541001)

Goldman Sachs Mortgage Company

(Central Index Key Number: 0001541502)

Rialto Mortgage Finance, LLC

(Central Index Key Number: 0001592182)

Redwood Commercial Mortgage Corporation

(Central Index Key Number: 0001567746)

RAIT Funding, LLC

(Central Index Key Number: 0001587045)

(Exact name of sponsor as specified in its charter)







|                                                                   |  |                                    
|------------------------------------------------------------------ |  | -----------------------------------
|New York                                                           |  | 47-3052831
47-3071329
47-6802394   
|(State or other jurisdiction oforganization of the issuing entity) |  | (I.R.S. EmployerIdentification No.)

c/o Citibank, N.A.

388 Greenwich Street, 14th Floor

New York, New York 10013

(Address of principal executive offices of issuing entity)

(212) 816-5614

Registrants telephone number, including area code

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

None

Securities
registered pursuant to section 12(g) of the Act:

None





Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities
Act.    ☐  Yes    ☒  No

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

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act
of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90
days.    ☒  Yes    ☐  No

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

Not Applicable

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405
of this chapter) is not contained herein, and will not be contained, to the best of registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form
10-K or any amendment to this Form 10-K.

Not Applicable

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act.



|                        |  |                                                  |  |                           |  |  
|----------------------- |  | ------------------------------------------------ |  | ------------------------- |  | -
|Large accelerated filer |  | ☐                                                |  | Accelerated filer         |  | ☐
|                        |  |                                                  | 
|Non-accelerated filer   |  | ☒  (Do not check if a smaller reporting company) |  | Smaller reporting company |  | ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule
12b-2 of the Act).    ☐  Yes    ☒  No

State the aggregate market value of the voting and non-voting common equity held by
non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrants most
recently completed second fiscal quarter.

Not Applicable

Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Section 12, 13 or 15(d) of the Securities
Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.

Not Applicable

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

Not Applicable

DOCUMENTS
INCORPORATED BY REFERENCE

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

See Item 15.









---

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 Financial Condition and Results of Operations.

Omitted.



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Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

Omitted.

Item 8. Financial Statements and Supplementary
Data.

Omitted.

Item 9. Changes in and
Disagreements With Accountants 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 Corporate Governance.

Omitted.

Item 11. Executive Compensation.

Omitted.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

Omitted.

Item 13. Certain Relationships and Related
Transactions, and Director Independence.

Omitted.

Item 14. Principal Accounting Fees and Services.

Omitted.

ADDITIONAL DISCLOSURE ITEMS REQUIRED
BY GENERAL INSTRUCTION J(2)

Item 1112(b) of Regulation AB

With respect to the pool assets for Citigroup Commercial Mortgage Trust 2015-GC27, there are no significant obligors within the meaning of Item 1101(k) of
Regulation AB.

Item 1114(b)(2) and Item 1115(b) of Regulation AB

No entity or group of affiliated entities provides any external credit enhancement, uses any derivative instruments or other support for the certificates
within this transaction.

Item 1117 of Regulation AB

Disclosure from Citibank, N.A., as Certificate Administrator:

Citibank, N.A. (Citibank) is acting as the Certificate Administrator of this commercial mortgage-backed securities
(CMBS) transaction. In the ordinary course of business, Citibank is involved in a number of legal proceedings, including in connection with its role as trustee of certain residential mortgage-backed securities (RMBS)
transactions. Certain of these Citibank as trustee-related matters are disclosed herein.

On June 18, 2014, a civil action was
filed against Citibank in the Supreme Court of the State of New York by a group of investors in 48 private-label RMBS trusts for which Citibank allegedly serves or did serve as trustee, asserting claims for purported violations of the Trust
Indenture Act of 1939 (the Trust Indenture Act), breach of contract, breach of fiduciary duty and negligence



---

based on Citibanks alleged failure to perform its duties as trustee for the 48 RMBS trusts. On November 24, 2014, plaintiffs sought leave to withdraw this action. On the same
day, a smaller subset of similar plaintiff investors in 27 private-label RMBS trusts for which Citibank allegedly serves or did serve as trustee, filed a new civil action against Citibank in the United States District Court for the Southern District
of New York asserting similar claims as the prior action filed in state court. In January 2015, the court closed plaintiffs original state court action. Citibanks motion to dismiss the federal complaint was fully briefed as of
May 13, 2015. On September 8, 2015, the federal court dismissed all claims as to 24 of the 27 trusts and allowed certain of the claims to proceed as to the other three trusts. Subsequently, plaintiffs voluntarily dismissed all claims with
respect to two of the three trusts. This case is still pending as to the one remaining trust at issue.

On November 24, 2015, the
same investors that brought the federal case brought a new civil action in the Supreme Court of the State of New York related to 25 private-label RMBS trusts for which Citibank allegedly serves or did serve as trustee. This case includes the 24
trusts previously dismissed in the federal action, and one additional trust. The investors assert claims for breach of contract, breach of fiduciary duty, breach of duty to avoid conflicts of interest, and violation of New Yorks Streit Act
(the Streit Act). Citibanks motion to dismiss was fully briefed as of April 15, 2016. Following oral argument on Citibanks motion to dismiss, plaintiffs filed an amended complaint on August 5, 2016. Citibanks
motion to dismiss the amended complaint was fully briefed as of October 21, 2016. Citibank awaits a decision.

On August 19,
2015, the Federal Deposit Insurance Corporation (FDIC) as Receiver for a financial institution filed a civil action against Citibank in the Southern District of New York. This action relates to one private-label RMBS trust for which Citibank
formerly served as trustee. FDIC asserts claims for breach of contract, violation of the Streit Act, and violation of the Trust Indenture Act. Citibank jointly briefed a motion to dismiss with The Bank of New York Mellon and U.S. Bank, entities that
have also been sued by FDIC in their capacity as trustee, and whose cases are also in front of Judge Carter. Defendants joint motion to dismiss was fully briefed as of March 22, 2016. On September 30, 2016, the court granted
Citibanks motion to dismiss the complaint without prejudice for lack of subject matter jurisdiction. On October 14, 2016, FDIC filed a motion for reargument or relief from judgment from the courts dismissal order. On
October 25, 2016, the court granted leave for defendants to file an opposition brief. Defendants filed their opposition on November 15, 2016, and plaintiff filed its reply brief on November 22, 2016. Citibank awaits a decision from
the court on the plaintiffs motion.

There can be no assurances as to the outcome of litigation or the possible impact of litigation
on the trustee or the RMBS trusts. However, Citibank denies liability and continues to vigorously defend against these litigations. Furthermore, neither the above-disclosed litigations nor any other pending legal proceeding involving
Citibank will materially affect Citibanks ability to perform its duties as Certificate Administrator under the Pooling and Servicing Agreement for this CMBS transaction.

Disclosure from Deutsche Bank Trust Company Americas, as Trustee:

Deutsche Bank Trust Company Americas (DBTCA) and Deutsche Bank National Trust Company (DBNTC) have been sued by
investors in civil litigation concerning their role as trustees of certain residential mortgage-backed securities (RMBS) trusts.

On June 18, 2014, a group of investors, including funds managed by Blackrock Advisors, LLC, PIMCO-Advisors, L.P., and others, filed a
derivative action against DBNTC and DBTCA in New York State Supreme Court purportedly on behalf of and for the benefit of 544 private-label RMBS trusts asserting claims for alleged violations of the U.S. Trust Indenture Act of 1939 (the
TIA), breach of contract, breach of fiduciary duty and negligence based on DBNTC and DBTCAs alleged failure to perform their duties as trustees for the trusts. Plaintiffs subsequently dismissed their state court complaint and filed
a derivative and class action complaint in the U.S. District Court for the Southern District of New York on behalf of and for the benefit of 564 private-label RMBS trusts, which substantially overlapped with the trusts at issue in the state court
action. The complaint alleges that the trusts at issue have suffered total realized collateral losses of U.S. $89.4 billion, but the complaint does not include a demand for money damages in a sum certain. DBNTC and DBTCA filed a motion to
dismiss, and on January 19, 2016, the court partially granted the motion on procedural grounds: as to the 500 trusts that are governed by pooling and servicing agreements, the court declined to exercise jurisdiction. The court did not rule on
substantive defenses asserted in the motion to dismiss. On March 22, 2016, plaintiffs filed an amended complaint in federal court. In the amended complaint, in connection with 62 trusts governed by indenture agreements, plaintiffs assert claims
for breach of contract, violation of the TIA, breach of fiduciary duty, and breach of duty to avoid conflicts of interest.    The amended complaint alleges that the trusts at issue have suffered total realized collateral losses
of U.S. $9.8 billion, but the complaint does not include a demand for money damages in a sum certain. On July 15, 2016, DBNTC and DBTCA filed a motion to dismiss the amended complaint. On January 23, 2017, the court granted in part
and denied in part DBNTC and DBTCAs motion to dismiss. The court granted the motion to dismiss with respect to plaintiffs conflict-of-interest claim, thereby
dismissing it, and denied the motion to dismiss with respect to plaintiffs breach of contract claim (except as noted



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below) and claim for violation of the TIA, thereby allowing those claims to proceed. On January 26, 2017, the parties filed a joint stipulation and proposed order dismissing plaintiffs
claim for breach of fiduciary duty. On January 27, 2017, the court entered the parties joint stipulation and ordered that plaintiffs claim for breach of fiduciary duty be dismissed. On February 3, 2017, following a hearing
concerning DBNTC and DBTCAs motion to dismiss on February 2, 2017, the court issued a short form order dismissing (i) plaintiffs representation and warranty claims as to 21 trusts whose originators and/or sponsors had entered
bankruptcy and the deadline for asserting claims against such originators and/or sponsors had passed as of 2009 and (ii) plaintiffs claims to the extent they were premised upon any alleged pre-event
of default duty to terminate servicers. Discovery is ongoing.

On March 25, 2016, the BlackRock plaintiffs filed a state court
action against DBTCA in the Superior Court of California, Orange County with respect to 513 trusts. On May 18, 2016, plaintiffs filed an amended complaint with respect to 465 trusts, and included DBNTC as an additional defendant. The
amended complaint asserts three causes of action: breach of contract; breach of fiduciary duty; and breach of the duty to avoid conflicts of interest. Plaintiffs purport to bring the action on behalf of themselves and all other current
owners of certificates in the 465 trusts. The amended complaint alleges that the trusts at issue have suffered total realized collateral losses of U.S. $75.7 billion, but does not include a demand for money damages in a sum certain. On
August 22, 2016, DBNTC and DBTCA filed a demurrer as to plaintiffs breach of fiduciary duty cause of action and breach of the duty to avoid conflicts of interest cause of action and motion to strike as to plaintiffs breach of
contract cause of action. On October 18, 2016, the court granted DBNTC and DBTCAs demurrer, providing plaintiffs with thirty days leave to amend, and denied DBNTC and DBTCAs motion to strike. Plaintiffs did not further amend
their complaint, and on December 19, 2016, DBNTC and DBTCA filed an answer to the amended complaint. Discovery is ongoing.

On
December 30, 2015, IKB International, S.A. in Liquidation and IKB Deutsche Industriebank A.G. (collectively, IKB), as an investor in 37 RMBS trusts, filed a summons with notice in the Supreme Court of the State of New York, New York
County, against DBNTC and DBTCA as trustees of the trusts. On May 27, 2016, IKB served its complaint asserting claims for breach of contract, breach of fiduciary duty, breach of duty to avoid conflicts of interest, violation of New
Yorks Streit Act, violation of the TIA, violation of Regulation AB, and violation of Section 9 of the Uniform Commercial Code. IKB alleges that DBNTC and DBTCA are liable for over U.S. $268 million in damages. On October 5,
2016, DBNTC and DBTCA, together with several other trustees defending lawsuits by IKB, filed a joint motion to dismiss. On January 6, 2017, IKB filed a notice of discontinuance, voluntarily dismissing with prejudice all claims as to three
trusts. As of January 17, 2017, DBNTC and DBTCAs motion to dismiss has been briefed and is awaiting decision by the court. Certain limited discovery is permitted to go forward while the motion to dismiss is pending.

It is DBTCAs belief that it has no pending legal proceedings (including, based on DBTCAs present evaluation, the litigation
disclosed in the foregoing paragraphs) that would materially affect its ability to perform its duties as Trustee under the Pooling and Servicing Agreement for this transaction.

Item 1119 of Regulation AB

Provided previously in
the prospectus supplement of the Registrant relating to the issuing entity and filed on February 9, 2015 pursuant to Rule 424(b)(5) of the Securities Act of 1933, as amended.

Item 1122 of Regulation AB

The reports on
assessment of compliance with servicing criteria for asset-backed securities and related attestation reports are attached hereto under Item 15.

Item 1123 of Regulation AB

The servicer compliance
statements are attached hereto under Item 15.

PART IV

Item 15. Exhibits, Financial Statement Schedules.



|(a) | List the following documents filed as a part of the report:
|--- | -----------------------------------------------------------



| | (1) | Not Applicable
| | --- | --------------



| | (2) | Not Applicable
| | --- | --------------



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| | (3) | Exhibits listed below are either included or incorporated by reference as indicated below:
| | --- | ------------------------------------------------------------------------------------------



|               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|-------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit
Number |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|               | 
|4.1            |  | Pooling and Servicing Agreement, dated as of February 1, 2015 (the CGCMT 2015-GC27 PSA), by and among Citigroup Commercial Mortgage Securities, Inc., as depositor, Wells Fargo Bank, National Association, as master
servicer, Midland Loan Services, a Division of PNC Bank, National Association, as special servicer, Park Bridge Lender Services LLC, as operating advisor, Citibank, N.A., as certificate administrator, and Deutsche Bank Trust Company Americas, as
trustee (filed as Exhibit 4.1 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9, 2015 under Commission File No. 333-189017-07, and is incorporated by reference herein).         
|               | 
|4.2            |  | Pooling and Servicing Agreement, dated as of December 1, 2014 (the GSMS 2014-GC26 PSA), by and among GS Mortgage Securities Corporation II, as depositor, Wells Fargo Bank, National Association, as master servicer,
LNR Partners, LLC, as general special servicer, CWCapital Asset Management LLC, as Cypresswood Court Shopping Center special servicer, Pentalpha Surveillance LLC, as operating advisor, and U.S. Bank National Association, as trustee and certificate
administrator (filed as Exhibit 4.2 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9, 2015 under Commission File No. 333-189017-07, and is incorporated by reference herein)1.
|               | 
|10.1           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between Citigroup Global Markets Realty Corp. and Citigroup Commercial Mortgage Securities Inc., pursuant to which Citigroup Global Markets Realty Corp. sold
certain mortgage loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 10.1 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on
February 9, 2015 under Commission File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                        
|               | 
|10.2           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between Goldman Sachs Mortgage Company and Citigroup Commercial Mortgage Securities Inc., pursuant to which Goldman Sachs Mortgage Company sold certain mortgage
loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 10.2 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9,
2015 under Commission File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                                      
|               | 
|10.3           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between Rialto Mortgage Finance, LLC and Citigroup Commercial Mortgage Securities Inc., pursuant to which Rialto Mortgage Finance, LLC sold certain mortgage loans
to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 10.3 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9, 2015
under Commission File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                                          
|               | 
|10.4           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between Redwood Commercial Mortgage Corporation and Citigroup Commercial Mortgage Securities Inc., pursuant to which Redwood Commercial Mortgage Corporation sold
certain mortgage loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 10.4 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on
February 9, 2015 under Commission File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                    
|               | 
|10.5           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between RAIT Funding, LLC and Citigroup Commercial Mortgage Securities Inc., pursuant to which RAIT Funding, LLC sold certain mortgage loans to Citigroup
Commercial Mortgage Securities Inc. (filed as Exhibit 10.5 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9, 2015 under Commission
File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                                                                



|1 | The Twin Cities Premium Outlets mortgage loan, which represented approximately 4.2% of the initial pool balance of the issuing entity, is part of a loan combination comprised of the subject mortgage loan included in the
issuing entity and one pari passu companion loan that is held outside the issuing entity. The Twin Cities Premium Outlets mortgage loan and the related companion loan is serviced pursuant to the GSMS 2014-GC26 PSA.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|      |  |                                                                                                                                                                                                                                                                             
|----- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|      | 
|31    |  | Rule 15d-14(d) Certification                                                                                                                                                                                                                                                
|      | 
|33.1  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer                                                                                                                          
|      | 
|33.2  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Midland Loan Services, a Division of PNC Bank, National Association, as special servicer                                                                                            
|      | 
|33.3  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services LLC, as operating advisor                                                                                                                               
|      | 
|33.4  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Citibank, N.A., as certificate administrator                                                                                                                                        
|      | 
|33.5  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Deutsche Bank Trust Company Americas, as custodian                                                                                                                                  
|      | 
|33.6  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant                                                                                                  
|      | 
|33.7  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant                                                                                                                         
|      | 
|33.8  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Northmarq Capital, LLC, as servicing function participant                                                                                                                           
|      | 
|33.9  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer for the Twin Cities Premium Outlets mortgage loan under the GSMS 2014-GC26 PSA (see
Exhibit 33.1)                        
|      | 
|33.10 |  | Report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the Twin Cities Premium Outlets mortgage loan under the
GSMS 2014-GC26 PSA (see Exhibit 33.6)
|      | 
|33.11 |  | Report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the Twin Cities Premium Outlets mortgage loan under the GSMS 2014-GC26 PSA (see
exhibit 33.7)                       
|      | 
|34.1  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer                                                                                                              
|      | 
|34.2  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Midland Loan Services, a Division of PNC Bank, National Association, as special servicer                                                                                
|      | 
|34.3  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services LLC, as operating advisor                                                                                                                   
|      | 
|34.4  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Citibank, N.A., as certificate administrator                                                                                                                            
|      | 
|34.5  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Deutsche Bank Trust Company Americas, as custodian                                                                                                                      



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|      |  |                                                                                                                                                                                                                                                                                         
|----- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|      | 
|34.6  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant                                                                                                  
|      | 
|34.7  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant                                                                                                                         
|      | 
|34.8  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Northmarq Capital, LLC, as servicing function participant                                                                                                                           
|      | 
|34.9  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer for the Twin Cities Premium Outlets mortgage loan under the GSMS
2014-GC26 PSA (see Exhibit 34.1)                        
|      | 
|34.10 |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the Twin Cities Premium Outlets mortgage loan
under the GSMS 2014-GC26 PSA (see Exhibit 34.6)
|      | 
|34.11 |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the Twin Cities Premium Outlets mortgage loan under the GSMS
2014-GC26 PSA (see Exhibit 34.7)                       
|      | 
|35.1  |  | Servicer compliance statement, Wells Fargo Bank, National Association, as master servicer                                                                                                                                                                                               
|      | 
|35.2  |  | Servicer compliance statement, Midland Loan Services, a Division of PNC Bank, National Association, as special servicer                                                                                                                                                                 
|      | 
|35.3  |  | Servicer compliance statement, Citibank, N.A., as certificate administrator                                                                                                                                                                                                             
|      | 
|35.4  |  | Servicer compliance statement, Wells Fargo Bank, National Association, as master servicer for the Twin Cities Premium Outlets mortgage loan under the GSMS 2014-GC26 PSA                                                                                                                
|      | 
|35.5  |  | Servicer compliance statement, Rialto Capital Advisors, LLC, as special servicer for the Boca Hamptons Plaza Portfolio mortgage loan2                                                                                                                                                   



|(b) | The exhibits required to be filed by Registrant pursuant to Item 601of Regulation S-K are listed above and in the Exhibit Index that immediately follows the signature page hereof.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(c) | Not Applicable
|--- | --------------



|2 | The Boca Hamptons Plaza Portfolio mortgage loan, which represented approximately 0.7% of the initial pool balance of the issuing entity, is part of a loan combination comprised of the subject mortgage loan included in
the issuing entity and one pari passu companion loan that is held outside the issuing entity. The Boca Hamptons Plaza Portfolio mortgage loan and the related companion loan (together, the Boca Hamptons Plaza Loan Combination) are
serviced pursuant to the CGCMT 2015-GC27 PSA. On July 1, 2015, the holder of the related companion loan removed Midland Loan Services, a Division of PNC Bank, National Association as the special servicer with respect to the Boca Hamptons Plaza
Loan Combination, and appointed Rialto Capital Advisors, LLC as the successor special servicer with respect to the Boca Hamptons Plaza Loan Combination, as disclosed in the current report on Form 8-K with
respect to the issuing entity filed on July 1, 2015 under Commission File No. 333-189017-07.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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SIGNATURES

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

Date: March 31, 2017



|                                                         
|---------------------------------------------------------
|Citigroup Commercial Mortgage Securities Inc.
(Depositor)
|                                                         
|/s/ Paul Vanderslice                                     
|Paul Vanderslice, President                              



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EXHIBIT INDEX



|               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|-------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit
Number |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|               | 
|4.1            |  | Pooling and Servicing Agreement, dated as of February 1, 2015 (the CGCMT 2015-GC27 PSA), by and among Citigroup Commercial Mortgage Securities, Inc., as depositor, Wells Fargo Bank, National Association, as master
servicer, Midland Loan Services, a Division of PNC Bank, National Association, as special servicer, Park Bridge Lender Services LLC, as operating advisor, Citibank, N.A., as certificate administrator, and Deutsche Bank Trust Company Americas, as
trustee (filed as Exhibit 4.1 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9, 2015 under Commission File No. 333-189017-07, and is incorporated by reference herein).         
|               | 
|4.2            |  | Pooling and Servicing Agreement, dated as of December 1, 2014 (the GSMS 2014-GC26 PSA), by and among GS Mortgage Securities Corporation II, as depositor, Wells Fargo Bank, National Association, as master servicer,
LNR Partners, LLC, as general special servicer, CWCapital Asset Management LLC, as Cypresswood Court Shopping Center special servicer, Pentalpha Surveillance LLC, as operating advisor, and U.S. Bank National Association, as trustee and certificate
administrator (filed as Exhibit 4.2 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9, 2015 under Commission File No. 333-189017-07, and is incorporated by reference herein)3.
|               | 
|10.1           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between Citigroup Global Markets Realty Corp. and Citigroup Commercial Mortgage Securities Inc., pursuant to which Citigroup Global Markets Realty Corp. sold
certain mortgage loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 10.1 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on
February 9, 2015 under Commission File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                        
|               | 
|10.2           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between Goldman Sachs Mortgage Company and Citigroup Commercial Mortgage Securities Inc., pursuant to which Goldman Sachs Mortgage Company sold certain mortgage
loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 10.2 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9,
2015 under Commission File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                                      
|               | 
|10.3           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between Rialto Mortgage Finance, LLC and Citigroup Commercial Mortgage Securities Inc., pursuant to which Rialto Mortgage Finance, LLC sold certain mortgage loans
to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 10.3 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9, 2015
under Commission File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                                          
|               | 
|10.4           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between Redwood Commercial Mortgage Corporation and Citigroup Commercial Mortgage Securities Inc., pursuant to which Redwood Commercial Mortgage Corporation sold
certain mortgage loans to Citigroup Commercial Mortgage Securities Inc. (filed as Exhibit 10.4 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on
February 9, 2015 under Commission File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                    
|               | 
|10.5           |  | Mortgage Loan Purchase Agreement, dated as of February 1, 2015, between RAIT Funding, LLC and Citigroup Commercial Mortgage Securities Inc., pursuant to which RAIT Funding, LLC sold certain mortgage loans to Citigroup
Commercial Mortgage Securities Inc. (filed as Exhibit 10.5 to the registrants Current Report on Form 8-K dated February 9, 2015, and filed by the registrant on February 9, 2015 under Commission
File No. 333-189017-07, and is incorporated by reference herein).                                                                                                                                                                                                                                



|3 | The Twin Cities Premium Outlets mortgage loan, which represented approximately 4.2% of the initial pool balance of the issuing entity, is part of a loan combination comprised of the subject mortgage loan included in the
issuing entity and one pari passu companion loan that is held outside the issuing entity. The Twin Cities Premium Outlets mortgage loan and the related companion loan is serviced pursuant to the GSMS 2014-GC26 PSA.
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|----- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|      | 
|31    |  | Rule 15d-14(d) Certification                                                                                                                                                                                                                                                
|      | 
|33.1  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer                                                                                                                          
|      | 
|33.2  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Midland Loan Services, a Division of PNC Bank, National Association, as special servicer                                                                                            
|      | 
|33.3  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services LLC, as operating advisor                                                                                                                               
|      | 
|33.4  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Citibank, N.A., as certificate administrator                                                                                                                                        
|      | 
|33.5  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Deutsche Bank Trust Company Americas, as custodian                                                                                                                                  
|      | 
|33.6  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant                                                                                                  
|      | 
|33.7  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant                                                                                                                         
|      | 
|33.8  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Northmarq Capital, LLC, as servicing function participant                                                                                                                           
|      | 
|33.9  |  | Report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer for the Twin Cities Premium Outlets mortgage loan under the GSMS 2014-GC26 PSA (see
Exhibit 33.1)                        
|      | 
|33.10 |  | Report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the Twin Cities Premium Outlets mortgage loan under the
GSMS 2014-GC26 PSA (see Exhibit 33.6)
|      | 
|33.11 |  | Report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the Twin Cities Premium Outlets mortgage loan under the GSMS 2014-GC26 PSA (see
exhibit 33.7)                       
|      | 
|34.1  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer                                                                                                              
|      | 
|34.2  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Midland Loan Services, a Division of PNC Bank, National Association, as special servicer                                                                                
|      | 
|34.3  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Park Bridge Lender Services LLC, as operating advisor                                                                                                                   
|      | 
|34.4  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Citibank, N.A., as certificate administrator                                                                                                                            
|      | 
|34.5  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Deutsche Bank Trust Company Americas, as custodian                                                                                                                      



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|      |  |                                                                                                                                                                                                                                                                                         
|----- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|      | 
|34.6  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant                                                                                                  
|      | 
|34.7  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant                                                                                                                         
|      | 
|34.8  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Northmarq Capital, LLC, as servicing function participant                                                                                                                           
|      | 
|34.9  |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, Wells Fargo Bank, National Association, as master servicer for the Twin Cities Premium Outlets mortgage loan under the GSMS
2014-GC26 PSA (see Exhibit 34.1)                        
|      | 
|34.10 |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, CoreLogic Commercial Real Estate Services, Inc., as servicing function participant for the Twin Cities Premium Outlets mortgage loan
under the GSMS 2014-GC26 PSA (see Exhibit 34.6)
|      | 
|34.11 |  | Attestation report on assessment of compliance with servicing criteria for asset-backed securities, National Tax Search, LLC, as servicing function participant for the Twin Cities Premium Outlets mortgage loan under the GSMS
2014-GC26 PSA (see Exhibit 34.7)                       
|      | 
|35.1  |  | Servicer compliance statement, Wells Fargo Bank, National Association, as master servicer                                                                                                                                                                                               
|      | 
|35.2  |  | Servicer compliance statement, Midland Loan Services, a Division of PNC Bank, National Association, as special servicer                                                                                                                                                                 
|      | 
|35.3  |  | Servicer compliance statement, Citibank, N.A., as certificate administrator                                                                                                                                                                                                             
|      | 
|35.4  |  | Servicer compliance statement, Wells Fargo Bank, National Association, as master servicer for the Twin Cities Premium Outlets mortgage loan under the GSMS 2014-GC26 PSA                                                                                                                
|      | 
|35.5  |  | Servicer compliance statement, Rialto Capital Advisors, LLC, as special servicer for the Boca Hamptons Plaza Portfolio mortgage loan4                                                                                                                                                   



|4 | The Boca Hamptons Plaza Portfolio mortgage loan, which represented approximately 0.7% of the initial pool balance of the issuing entity, is part of a loan combination comprised of the subject mortgage loan included in
the issuing entity and one pari passu companion loan that is held outside the issuing entity. The Boca Hamptons Plaza Portfolio mortgage loan and the related companion loan (together, the Boca Hamptons Plaza Loan Combination) are
serviced pursuant to the CGCMT 2015-GC27 PSA. On July 1, 2015, the holder of the related companion loan removed Midland Loan Services, a Division of PNC Bank, National Association as the special servicer with respect to the Boca Hamptons Plaza
Loan Combination, and appointed Rialto Capital Advisors, LLC as the successor special servicer with respect to the Boca Hamptons Plaza Loan Combination, as disclosed in the current report on Form 8-K with
respect to the issuing entity filed on July 1, 2015 under Commission File No. 333-189017-07.
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