UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K/A

(Amendment No. 1)

(Mark One)

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

For the fiscal year ended December 31, 2017
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 of the issuing entity: 333-166711-01

Central Index Key Number of the issuing entity:
0001536226

UBS-Citigroup Commercial Mortgage Trust 2011-C1

(exact name of the issuing entity as specified in
its charter)



Central Index Key Number of the depositor: 0001258361

Citigroup Commercial Mortgage Securities Inc.

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



Central Index Key Number of the sponsor: 0001541886

UBS Real Estate Securities Inc.

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



Central Index Key Number of the sponsor: 0001542256

Natixis Real Estate Capital LLC

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



|New York(State or other jurisdiction ofincorporation or organization of
        the issuing entity) | 86-1073506
        (I.R.S. Employer
        Identification Numbers)
|--------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------

c/o Deutsche Bank Trust Company Americas

as Certificate Administrator

1761 East St. Andrew Place

Santa Ana, CA

(Address of principal executive offices of the issuing
entity)

92705

(Zip Code)

Registrant’s telephone number, including
area code:

(212) 816-6000



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 (Section 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 (Section 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, smaller reporting company or an emerging growth company. See the definitions
of “large accelerated filer”, “accelerated filer”, “smaller reporting company”, and “emerging
growth 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 | ☐
|                        |                                                  | Emerging growth company   | ☐

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

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. ☐ Yes ☐
No

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).

Not applicable.






EXPLANATORY NOTES

The purpose of this Amendment No. 1 (the "Amendment") to our Annual Report on Form 10-K for the fiscal year ended December 31, 2017, as filed with the Securities and Exchange Commission (the "Commission") on March 29, 2018 under Commission File No. 333-166711-01 (the "Original Form 10-K"), is to file with the Commission an amended report on assessment of compliance with servicing criteria for asset-backed securities of KeyBank National Association (as successor to KeyCorp Real Estate Capital Markets, Inc.), as primary servicer, as Exhibit 33.8 as a replacement of the report on assessment of compliance with servicing criteria for asset-backed securities filed as Exhibit 33.8 to the Original Form 10-K.  The amended report on assessment of compliance with servicing criteria for asset-backed securities of KeyBank National Association filed as Exhibit 33.8 to this Amendment includes the servicing criterion set forth in Item 1122(d)(2)(vii)(C) of Regulation AB which was not included in the report on assessment of compliance with servicing criteria for asset-backed securities filed as Exhibit 33.8 to the Original Form 10-K.  No other changes have been made to the Original Form 10-K other than the change described above. This Amendment No. 1 does not reflect subsequent events occurring after the original filing date of the Original Form 10-K.



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.

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.  The issuing entity does not have any executive officers
or directors.

Item 11. Executive Compensation.

Omitted.  The issuing entity does not have any executive officers
or directors.

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

Omitted.  The issuing entity does not have any executive officers
or directors.

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

Omitted.  The issuing entity does not have any executive officers
or directors.

Item 14. Principal Accounting Fees and Services.

Omitted.

ADDITIONAL DISCLOSURE ITEMS FOR REGULATION
AB

Item 1112(b) of Regulation AB, Significant Obligor Financial
Information.

Each of (i) the property securing the Trinity Centre Mortgage Loan and (ii)
the property securing the Poughkeepsie Galleria Mortgage Loan constitutes
a significant obligor within the meaning of Item 1101(k)(2) of Regulation
AB and as disclosed in the Prospectus Supplement for UBS-Citigroup
Commercial Mortgage Trust 2011-C1 filed on December 28, 2011.

With respect to the Trinity Centre Mortgage Loan, based on information
provided by the Trinity Centre Mortgage Loan Borrower, the unaudited net
operating income for the period of January 1, 2015 through September 30,
2015 for the Trinity Centre Mortgaged Property was $14,076,212.00.  The
Trinity Centre Mortgage Loan was defeased on November 6, 2015.

With respect to the Poughkeepsie Galleria Mortgage Loan, based on
information provided by the Poughkeepsie Galleria Mortgage Loan Borrower,
the unaudited net operating income for the twelve month period ending
December 31, 2017 for the Poughkeepsie Galleria Mortgaged Property was $14,712,978.00.

Item 1114(b)(2) of Regulation AB, Significant Enhancement Provider
Financial Information.

No entity or group of affiliated
entities provides any external credit enhancement or other support for the certificates within this transaction as described under
Item 1114(a) of Regulation AB.

Item 1115(b) of Regulation AB, Certain Derivatives Instruments
(Financial Information).

No entity or group of affiliated entities provides any derivative
instruments for the certificates within this transaction as described under Item 1115 of Regulation AB.

Item 1117 of Regulation AB, Legal Proceedings.

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 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 ("Trust Indenture Act"), 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
Trust Indenture Act, 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 below) and claim for violation of the Trust Indenture Act, 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.
On March 27, 2017, DBNTC and DBTCA filed an answer to the amended complaint.
On January 26, 2018, plaintiffs filed a motion for class certification.  The parties
are currently briefing the motion.  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.  On January 17, 2018, plaintiffs filed a motion for class certification.  The parties are currently briefing the motion.  Discovery is ongoing.

On September 27, 2017, DBTCA was added as a defendant to a case brought by certain
special purpose entities including Phoenix Light SF Limited in the U.S. District Court for
the Southern District of New York, in which the plaintiffs previously alleged incorrectly
that DBNTC served as trustee for all 43 of the trusts at issue.  On September 27, 2017,
plaintiffs filed a third amended complaint that names DBTCA as a defendant in addition
to DBNTC.  DBTCA serves as trustee for one of the 43 trusts at issue.  DBNTC serves as
trustee for the other 42 trusts at issue.  Plaintiffs' third amended complaint brings
claims for violation of the Trust Indenture Act; breach of contract; breach of fiduciary
duty; negligence and gross negligence; violation of New York's Streit Act (the "Streit Act");
and breach of the covenant of good faith.  However, in the third amended complaint, plaintiffs
acknowledge that, before DBTCA was added to the case, the court dismissed plaintiffs'
Trust Indenture Act claims, negligence and gross negligence claims, Streit Act claims,
claims for breach of the covenant of good faith, and certain theories of plaintiffs' breach
of contract claims, and plaintiffs only include these claims to preserve any rights on
appeal.  Plaintiffs allege damages of "hundreds of millions of dollars."  On November 13, 2017,
DBNTC and DBTCA filed an answer to the third amended complaint.  Discovery is ongoing.

On November 30, 2017, DBTCA was added as a defendant to a case brought by
Commerzbank AG ("Commerzbank") in the U.S. District Court for the Southern District
of New York, in which Commerzbank previously alleged incorrectly that DBNTC served
as trustee for all 50 of the trusts at issue.  On November 30, 2017, Commerzbank filed a
second amended complaint that names DBTCA as a defendant in addition to DBNTC.
DBTCA serves as trustee for 1 of the 50 trusts at issue.  DBNTC serves as trustee for the
other 49 trusts at issue.  Commerzbank's second amended complaint brings claims for
violation of the Trust Indenture Act; breach of contract; breach of fiduciary duty; negligence; violation of
the Streit Act; and breach of the covenant of good faith.  However, in the second
amended complaint, Commerzbank acknowledges that, before DBTCA was added to the
case, the court dismissed Commerzbank's Trust Indenture Act claims for the trusts governed by pooling
and servicing agreements, as well as its Streit Act claims and claims for breach of the
covenant of good faith, and Commerzbank only includes these claims to preserve any
rights on appeal.  The second amended complaint alleges that DBNTC and DBTCA
caused Commerzbank to suffer "hundreds of millions of dollars in losses," but the
complaint does not include a demand for money damages in a sum certain.  On January 29, 2018, DBNTC and DBTCA filed an answer to the second 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 the Streit Act, violation of the
Trust Indenture Act, 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.  On June 20, 2017, the parties filed a
stipulation, voluntarily dismissing with prejudice all claims as to four additional trusts.
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.

Disclosure from KeyBank National Association, as primary servicer:

On February 23, 2016, a certificateholder of the J.P. Morgan Chase Commercial Mortgage Securities Trust, Series 2007-CIBC18 (the "Trust")
filed suit in the Supreme Court of New York, County of New York, against KeyBank National Association and Berkadia Commercial Mortgage LLC (collectively, the "Servicers").
The suit was filed derivatively on behalf of the Trust.  The action was brought in connection with the Servicers' determination of the fair value of a loan, secured by the Bryant Park Hotel
in New York City, held by the Trust and sold to an assignee of the Trust's directing certificateholder, pursuant to an exercise of the fair value option set forth in the pooling and servicing
agreement governing the Trust.  There can be no assurances as to the outcome of the action or the possible impact of the litigation on the Servicers.  Both Servicers deny liability,
believe that they performed their obligations in accordance with the terms of the pooling and servicing agreement, and have contested the claims asserted against them, filing a motion to
dismiss the case.  On November 28, 2016, the Servicers' motion to dismiss was granted.  The plaintiff certificateholder has filed a notice of appeal, and the appeal is pending.

Item 1119 of Regulation AB, Affiliations and Certain Relationships
and Related Transactions.

The information regarding this Item has been previously provided in the
Prospectus Supplement relating to UBS-Citigroup Commercial Mortgage Trust 2011-C1 filed pursuant to Rule 424(b)(5) on December 28, 2011.

Item 1122 of Regulation AB, Compliance with Applicable Servicing
Criteria.

See Item 15, Exhibits 33 and 34.

Item 1123 of Regulation AB, Servicer Compliance Statement.

See Item 15, Exhibit 35.



PART IV

Item 15. Exhibits, Financial Statement Schedules

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

(1) Not applicable

(2) Not applicable

(3) See below

Exhibit

Number   Description

| | 4.1 | Pooling and Servicing Agreement, dated as of December 1, 2011, by and among Citigroup Commercial Mortgage Securities, Inc.,
as depositor, Wells Fargo Bank, National Association, as Master Servicer, Rialto Capital Advisors, LLC (as successor to Midland Loan Services, a Division of PNC Bank, National Association),
as Special Servicer, Trimont Real Estate Advisors, Inc., as Operating Advisor, and Deutsche Bank Trust Company Americas, as trustee, certificate administrator, paying agent and custodian.
(Exhibit 4.1 was filed as part of the Registrant's Current Report on
Form 8-K filed on December 29, 2011 (Commission File No. 333-166711-01) and is incorporated by reference herein.)
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 4.2 | Amendment Number 1 To Pooling And Servicing Agreement, dated as of June 6, 2012, by and among Citigroup
Commercial Mortgage Securities Inc., as depositor, Wells Fargo Bank, National Association, as master servicer, Rialto Capital Advisors, LLC (as successor to Midland Loan
Services, a Division of PNC Bank, National Association), as special servicer, Deutsche Bank Trust Company Americas, as trustee, certificate administrator, paying agent and
custodian, and TriMont Real Estate Advisors, Inc., as operating advisor.
(Exhibit 4.2 was filed as part of the Registrant's Annual Report on Form 10K filed on March 29, 2013 (Commission File No. 333-166711-01) and is incorporated by reference herein.)
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 10.1 | Mortgage Loan Purchase Agreement, dated as of December 22, 2011, between UBS Real Estate Securities Inc.
and Citigroup Commercial Mortgage Securities Inc., pursuant to which UBS Real Estate Securities Inc. sold certain mortgage loans to Citigroup Commercial Mortgage Securities Inc.
(Exhibit 10.1 was filed as part of the Registrant's Current Report on Form 8-K filed on December 28, 2011 (Commission File No. 333-166711-01) and is incorporated by reference herein.)
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 10.2 | Mortgage Loan Purchase Agreement, dated as of December 22, 2011, between Natixis Real Estate Capital LLC
and Citigroup Commercial Mortgage Securities Inc., pursuant to which Natixis Real Estate Capital LLC sold certain mortgage loans to Citigroup Commercial Mortgage
Securities Inc. (Exhibit 10.2 was filed as part of the Registrant's Current Report on Form 8-K filed on December 28, 2011 (Commission File No. 333-166711-01) and is incorporated by reference herein.)
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 10.3 | Primary Servicing Agreement, dated as of December 1, 2011, between Wells Fargo Bank, National Association, as
master servicer, and Midland Loan Services, a Division of PNC Bank, National Association, as primary servicer.
(Exhibit 10.3 was filed as part of the Registrant's Current Report on Form 8-K filed on December 28, 2011 (Commission File No. 333-166711-01) and is incorporated by reference herein.)
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 10.4 | Primary Servicing Agreement, dated as of December 1, 2011, between Wells Fargo Bank, National Association, as
master servicer, and KeyBank National Association (as successor to KeyCorp Real Estate Capital Markets, Inc.), as primary servicer.
(Exhibit 10.3 was filed as part of the Registrant's Annual Report on Form 10-K/A filed on January 26, 2015 (Commission File No. 333-166711-01) and is incorporated by reference herein.)
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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

| | 33 | Reports on assessment of compliance with servicing criteria for asset-backed securities.
| | -- | ----------------------------------------------------------------------------------------

| | 33.1 | Wells Fargo Bank, N.A., as master servicer, Annual Report on Assessment
      of Compliance for Year End December 31, 2017 (filed as Exhibit 33.1 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.2 | Midland Loan Services, a Division of PNC Bank, N.A., as primary servicer,
      Annual Report on Assessment of Compliance for Year End December 31, 2017 (filed as Exhibit 33.2 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.3 | Rialto Capital Advisors, LLC, as special servicer, Annual Report on
      Assessment of Compliance for Year End December 31, 2017 (filed as Exhibit 33.3 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.4 | Deutsche Bank Trust Company Americas, as trustee, custodian and
      certificate administrator, Annual Report on Assessment of Compliance for Year End December 31, 2017 (filed as Exhibit 33.4 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.5 | Trimont Real Estate Advisors, Inc., as operating advisor, Annual
      Report on Assessment of Compliance for Year End December 31, 2017 (filed as Exhibit 33.5 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.6 | CoreLogic Commercial Real Estate Services, Inc., as servicing function
      participant, Annual Report on Assessment of Compliance for Year End
      December 31, 2017 (filed as Exhibit 33.6 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.7 | National Tax Search, LLC, as servicing function participant, Annual
      Report on Assessment of Compliance for Year End December 31, 2017 (filed as Exhibit 33.7 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.8 | KeyBank National Association (as successor to KeyCorp Real Estate
      Capital Markets, Inc.), as primary servicer, Annual Report on
      Assessment of Compliance for Year End December 31, 2017.
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34 | Attestation reports on assessment of compliance with servicing criteria for asset-backed securities.
| | -- | ----------------------------------------------------------------------------------------------------

| | 34.1 | Attestation Report on Assessment of Compliance with Servicing Criteria
      for Wells Fargo Bank, N.A., as master servicer, for Year End
      December 31, 2017 (filed as Exhibit 34.1 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.2 | Attestation Report on Assessment of Compliance with Servicing Criteria
      for Midland Loan Services, a Division of PNC Bank, N.A., as primary
      servicer, for Year End December 31, 2017 (filed as Exhibit 34.2 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.3 | Attestation Report on Assessment of Compliance with Servicing Criteria
      for Rialto Capital Advisors, LLC, as special servicer for Year End
      December 31, 2017 (filed as Exhibit 34.3 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.4 | Attestation Report on Assessment of Compliance with Servicing Criteria
      for Deutsche Bank Trust Company Americas, as trustee, custodian and
      certificate administrator, for Year End December 31, 2017 (filed as Exhibit 34.4 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.5 | Attestation Report on Assessment of Compliance with Servicing Criteria
      for Trimont Real Estate Advisors, Inc., as operating advisor, Report
      for Year End December 31, 2017 (filed as Exhibit 34.5 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.6 | Attestation Report on Assessment of Compliance with Servicing Criteria
      for CoreLogic Commercial Real Estate Services, Inc., as servicing
      function participant, for Year End December 31, 2017 (filed as Exhibit 34.6 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.7 | Attestation Report on Assessment of Compliance with Servicing Criteria
      for National Tax Search, LLC, as servicing function participant, for
      Year End December 31, 2017 (filed as Exhibit 34.7 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.8 | Attestation Report on Assessment of Compliance with Servicing Criteria
      for KeyBank National Association (as successor to KeyCorp Real Estate
      Capital Markets, Inc.), as primary servicer, for Year End December 31,
      2017 (filed as Exhibit 34.8 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 35 | Servicer compliance statements.
| | -- | -------------------------------

| | 35.1 | Wells Fargo Bank, N.A., as master servicer, Annual Statement of
      Compliance for Year End December 31, 2017 (filed as Exhibit 35.1 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 35.2 | Midland Loan Services, a Division of PNC Bank, N.A., as primary servicer,
      Annual Statement of Compliance for Year End December 31, 2017 (filed as Exhibit 35.2 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 35.3 | Rialto Capital Advisors, LLC., as special servicer, Annual Statement
      of Compliance for Year End December 31, 2017 (filed as Exhibit 35.3 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 35.4 | Deutsche Bank Trust Company Americas, as certificate administrator,
      Annual Statement of Compliance for Year End December 31, 2017 (filed as Exhibit 35.4 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 35.5 | KeyBank National Association (as successor to KeyCorp Real Estate
      Capital Markets, Inc.), as primary servicer, Annual Statement of
      Compliance for Year End December 31, 2017 (filed as Exhibit 35.5 to the Original Form 10-K under Commission File No. 333-166711-01 and incorporated by reference herein).
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

(b)       The exhibits required
to be filed by the Registrant 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 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.

Citigroup Commercial Mortgage Securities Inc.
(Depositor)

/s/ Richard Simpson

Richard Simpson

Title: President

(senior officer in charge of securitization of the depositor)

Date: June 21, 2018