UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-D

ASSET-BACKED ISSUER DISTRIBUTION REPORT

PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the monthly distribution period from:

December 13, 2016 to January 12, 2017

Commission File Number of issuing entity: 333-189017-11

Central Index Key Number of issuing entity: 0001651588

Citigroup Commercial Mortgage Trust 2015-GC33

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

Commission File Number of depositor: 333-189017

Central Index Key Number of depositor: 0001258361

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)

KGS-Alpha Real Estate Capital Markets, LLC

(Central Index Key Number: 0001499542)

RAIT Funding, LLC

(Central Index Key Number: 0001587045)

(Exact names of sponsors as specified in their respective charters)

Richard Simpson (212) 816-5343

(Name and telephone number, including area code, of the person to contact in connection with this filing)

New York

(State or other jurisdiction of incorporation or organization of the issuing entity)

47-5176815

47-5216649

47-7328772

(I.R.S. Employer Identification No.)

c/o Citibank, N.A.
388 Greenwich Street, 14th Floor
New York, New York	10013
(Address of principal executive offices of the issuing entity)	(Zip Code)

(212) 816-5693

(Telephone number, including area code)

	Registered/reporting pursuant to (check one)			Name of exchange (If Section 12(b))
Title of class	Section 12(b)	Section 12(g)	Section 15(d)
A-1	☐	☐	☒		Not Applicable
A-2	☐	☐	☒		Not Applicable
A-3	☐	☐	☒		Not Applicable
A-4	☐	☐	☒		Not Applicable
A-AB	☐	☐	☒		Not Applicable
X-A	☐	☐	☒		Not Applicable
A-S	☐	☐	☒		Not Applicable
B	☐	☐	☒		Not Applicable
PEZ	☐	☐	☒		Not Applicable
C	☐	☐	☒		Not Applicable
D	☐	☐	☒		Not Applicable
X-D	☐	☐	☒		Not Applicable

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  ☐

PART I – DISTRIBUTION INFORMATION

Item 1. Distribution and Pool Performance Information.

On January 12, 2017, a distribution was made to holders of the certificates issued by Citigroup Commercial Mortgage Trust 2015-GC33.

The distribution report is attached as Exhibit 99.1 to this Form 10-D.

No assets securitized by Citigroup Commercial Mortgage Securities Inc. (the “Depositor”) and held by Citigroup Commercial Mortgage Trust 2015-GC33 were the subject of a demand to repurchase or replace for breach of the representations and warranties contained in the underlying transaction documents during the monthly distribution period covered by this distribution report on Form 10-D.

The Depositor most recently filed a Form ABS-15G under Rule 15Ga-1 under the Securities Exchange Act of 1934 (“Rule 15Ga-1”) on February 16, 2016. The CIK number of the Depositor is 0001258361.

Citigroup Global Markets Realty Corp. (“CGMRC”), one of the sponsors, most recently filed a Form ABS-15G under Rule 15Ga-1 on February 16, 2016. The CIK number of CGMRC is 0001541001.

Goldman Sachs Mortgage Company (“GSMC”), one of the sponsors, most recently filed a Form ABS-15G under Rule 15Ga-1 on November 14, 2016. The CIK number of GSMC is 0001541502.

Rialto Mortgage Finance, LLC (“Rialto”), one of the sponsors, most recently filed a Form ABS-15G under Rule 15Ga-1 on February 3, 2016. The CIK number of Rialto is 0001592182.

KGS Holdings, L.P. (“KGS”), the parent of KGS-Alpha Real Estate Capital Markets, LLC, one of the sponsors, most recently filed a Form ABS-15G under Rule 15Ga-1 on August 4, 2016. The CIK number of KGS is 0001499542.

RAIT Funding, LLC (“RAIT”), one of the sponsors, most recently filed a Form ABS-15G under Rule 15Ga-1 on February 16, 2016. The CIK number of RAIT is 0001587045.

Item 1A. Asset-Level Information.

Not applicable

Item 1B. Asset Representations Reviewer and Investor Communication.

Not applicable

PART II – OTHER INFORMATION

Item 2. 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 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 “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, plaintiffs assert claims in connection with 62 trusts governed by indenture agreements. 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. As of September 2, 2016, DBNTC and DBTCA’s motion to dismiss has been briefed and is awaiting decision by the court. 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 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. 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 3. Sales of Securities and Use of Proceeds.

None

Item 4. Defaults Upon Senior Securities.

None

Item 5. Submission of Matters to a Vote of Security Holders.

None

Item 6. Significant Obligors of Pool Assets.

Each of (i) the portfolio of properties securing the Illinois Center mortgage loan and (ii) the portfolio of properties securing the Hammons Hotel Portfolio 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 Citigroup Commercial Mortgage Trust 2015-GC33 filed on September 29, 2015.

With respect to the portfolio of properties securing the Illinois Center mortgage loan, the most recent unaudited net operating income was $17,453,187 from January 1, 2016 through September 30, 2016. There is no material update at this time.

With respect to the portfolio of properties securing the Hammons Hotel Portfolio mortgage loan, the most recent unaudited net operating income was $28,047,277 from January 1, 2016 through September 30, 2016. There is no material update at this time.

Item 7. Change in Sponsor Interest in Securities.

None

Item 8. Significant Enhancement Provider Information.

None

Item 9. Other Information.

None

Item 10. Exhibits.

(a) The following is a list of documents filed as part of this Form 10-D:

(99.1): Monthly report distributed to holders of the certificates issued by Citigroup Commercial Mortgage Trust 2015-GC33, relating to the January 12, 2017 distribution.

(b) The exhibits required to be filed by the Registrant pursuant to this Form 10-D are listed above and in the Exhibit Index that immediately follows the signature page hereof.

SIGNATURES

Pursuant to the requirements 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/ Paul Vanderslice

Paul Vanderslice, President

Date: January 27, 2017

EXHIBIT INDEX

Exhibit Number	Description
Exhibit 99.1	Monthly report distributed to holders of the certificates issued by Citigroup Commercial Mortgage Trust 2015-GC33, relating to the January 12, 2017 distribution.