UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(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, 2018
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: 333-193376-19

Central Index Key Number of the issuing entity:
0001643293

COMM 2015-LC21 Mortgage Trust

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



Central Index Key Number of the depositor: 0001013454

Deutsche Mortgage & Asset Receiving Corporation

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



Central Index Key Number of the sponsor: 0001541294

German American Capital Corporation

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



Central Index Key Number of the sponsor: 0001558761

Cantor Commercial Real Estate Lending, L.P.

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



Central Index Key Number of the sponsor: 0001541468

Ladder Capital Finance LLC

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



Central Index Key Number of the sponsor: 0001089877

KeyBank National Association

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



|New York(State or other jurisdiction ofincorporation or organization of
        the issuing entity) | 47-4300612
        47-4322711
        47-7135776
        (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) 250-2500

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. o 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. o 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, a 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                                                                                                                                                                                                                                    | o                                                | Accelerated filer         | o
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------ | ------------------------- | -
|Non-accelerated filer                                                                                                                                                                                                                                      | ☑  (Do not check if a smaller reporting company) | Smaller reporting company | o
|                                                                                                                                                                                                                                                           |                                                  | Emerging growth company   | o
|                                                                                                                                                                                                                                                           |                                                 
|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. | o                                               

Indicate by check mark whether the registrant is a shell company (as
defined in Rule 12b-2 of the Act). o 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. o Yes o
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 Exhibit Index describes exhibits provided by certain parties (in
their capacities indicated on the Exhibit Index) with respect to the Renaissance New Orleans Portfolio Mortgage Loan, which constituted
approximately 1.5% of the asset pool of the issuing entity as of its cut-off date.  The Renaissance New Orleans Portfolio
Mortgage Loan is an asset of the issuing entity and is part of a loan combination that includes the Renaissance New Orleans Portfolio
Mortgage Loan and one other pari passu loan, which is not an asset of the issuing entity. The other pari passu portion
of the loan combination was securitized in the JPMBB Commercial Mortgage Securities Trust 2015-C28 transaction, Commission File
Number 333-190246-13 (the “JPMBB 2015-C28 Transaction”). This loan combination, including the Renaissance New
Orleans Portfolio Mortgage Loan, is being serviced and administered pursuant to the pooling and servicing agreement for the JPMBB
2015-C28 Transaction, which is incorporated by reference as Exhibit 4.2 to this Annual Report on Form 10-K. Wells Fargo Bank, National
Association is the master servicer under the pooling and servicing agreement for the JPMBB 2015-C28 Transaction. The responsibilities
of Wells Fargo Bank, National Association, as primary servicer (only with respect to the obligation to make property protection
and mortgage payment advances) of this loan combination with respect to the issuing entity, are subsumed within its responsibilities
as master servicer under the pooling and servicing agreement for the JPMBB 2015-C28 Transaction. Thus, the servicer compliance
statement provided by Wells Fargo Bank, National Association, as master servicer under such pooling and servicing agreement, encompasses
its roles as both master servicer and primary servicer with respect to this loan combination.

The Courtyard by Marriott Portfolio Mortgage Loan, previously an asset
of the issuing entity being serviced under the pooling and servicing agreement for the COMM 2015-CCRE23 Transaction, was not an
asset of the issuing entity during the reporting period and is omitted from this Annual Report on Form 10-K and will be omitted
from subsequent Annual Reports on Form 10-K.

The Exhibit Index describes exhibits provided by certain parties (in
their capacities indicated on the Exhibit Index) with respect to the La Gran Plaza Mortgage Loan, which constituted approximately
1.8% of the asset pool of the issuing entity as of its cut-off date.  The La Gran Plaza Mortgage Loan is an asset of the issuing
entity and is part of a loan combination that includes the La Gran Plaza Mortgage Loan and two other pari passu loans, which
are not assets of the issuing entity. This loan combination, including the La Gran Plaza Mortgage Loan, was serviced under the
pooling and servicing agreement for the COMM 2015-CCRE 23 Transaction prior to the closing of the securitization of a pari passu
portion of the combination in the COMM 2015-CCRE24 Mortgage Trust transaction, Commission File Number 333-193376-21 (the “COMM
2015-CCRE24 Transaction”). After the closing of the COMM 2015-CCRE24 Transaction on August 6, 2015, this loan combination,
including the La Gran Plaza Mortgage Loan was, and will continue to be, serviced and administered pursuant to the pooling and servicing
agreement for the COMM 2015-CCRE24 Transaction, which is incorporated by reference as Exhibit 4.3 to this Annual Report on Form
10-K. Wells Fargo Bank, National Association is the master servicer under the pooling and servicing agreement for the COMM 2015-CCRE24
Transaction. The responsibilities of Wells Fargo Bank, National Association, as primary servicer of this loan combination with
respect to the issuing entity, are subsumed within its responsibilities as master servicer under the pooling and servicing agreement
for the COMM 2015-CCRE24 Transaction. Thus, the servicer compliance statement provided by Wells Fargo Bank, National Association,
as master servicer under such pooling and servicing agreement, encompasses its roles as both master servicer and primary servicer
with respect to this loan combination.

Park Bridge Lender Services LLC is the operating advisor of the mortgage
loans serviced under the Pooling and Servicing Agreement and the La Gran Plaza Mortgage Loan. As a result, Park Bridge Lender Services
LLC is a servicing function participant in the capacities described above, because it is servicing mortgage loans that constituted
5% or more of the assets of the issuing entity as of its cut-off date. The assessments of compliance with applicable servicing
criteria and accountants’ attestation reports delivered by Park Bridge Lender Services LLC in the capacities described above
are listed in the Exhibit Index.

Berkeley Point Capital LLC d/b/a Newmark Knight Frank is an affiliate
of Cantor Commercial Real Estate Lending, L.P., one of the sponsors.  Therefore, the Depositor included in this Annual Report
on Form 10-K a servicer compliance statement for Berkeley Point Capital LLC d/b/a Newmark Knight Frank pursuant to Item 1123. 
Because Berkeley Point Capital LLC d/b/a Newmark Knight Frank is servicing less than 5% of the pool assets, an assessment of compliance
with applicable servicing criteria and an accountants’ attestation report pursuant to Item 1122 of Regulation AB are not
required by Regulation AB.  As the attestation made in the servicer compliance statement required by Item 1123 relates to
a review of the servicing activities of Berkeley Point Capital LLC d/b/a Newmark Knight Frank under the applicable servicing agreement,
and that review was conducted in conjunction with the servicer’s preparation of its assessment of compliance with applicable
servicing criteria, that assessment of compliance with applicable servicing criteria and the accompanying accountants’ attestation
report are included in this Annual Report on Form 10-K for the sake of completeness.

Wilmington Trust, National Association acts as trustee of the mortgage
loans serviced under the Pooling and Servicing Agreement, the Renaissance New Orleans Portfolio Mortgage Loan and the La Gran Plaza
Mortgage Loan. Pursuant to the Pooling and Servicing Agreement, the pooling and servicing agreement for the JPMBB 2015-C28 Transaction
and the pooling and servicing agreement for the COMM 2015-CCRE24 Transaction, the trustee is required to provide an assessment
of compliance with applicable servicing criteria solely with respect to Item 1122(d)(2)(iii) of Regulation AB (regarding advances
of funds or guarantees regarding collections, cash flows or distributions, and any interest or other fees charged for such advances,
are made, reviewed and approved as specified in the transaction agreements). However, during the reporting period, the trustee
did not perform any servicing function with respect to the servicing criteria specified in Item 1122(d)(2)(iii) of Regulation AB.
The master servicer or the special servicer, to the extent required, performed the servicing function identified with respect to
Item 1122(d)(2)(iii) of Regulation AB, and each such party included Item 1122(d)(2)(iii) of Regulation AB in the assessment of
compliance with applicable servicing criteria and accountant’s attestation report for the subject transaction. As a
result, this Annual Report on Form 10-K does not include an assessment of compliance with applicable servicing criteria of the
trustee. One or more other servicers of the mortgage loans serviced under the Pooling and Servicing Agreement, the Renaissance
New Orleans Portfolio Mortgage Loan and the La Gran Plaza Mortgage Loan have delivered one or more assessments of compliance with
respect to Item 1122(d)(2)(iii) of Regulation AB.

KeyBank National Association is the primary servicer of the mortgage
loans serviced under the Pooling and Servicing Agreement and the Renaissance New Orleans Portfolio Mortgage Loan. As a result,
KeyBank National Association is a “servicer” as defined in Item 1108(a)(2)(iii) of Regulation AB, in the capacities
described above, because it is servicing mortgage loans that constituted 10% or more of the assets of the issuing entity as of
its cut-off date. The assessments of compliance with applicable servicing criteria, accountants’ attestation reports and
servicer compliance statements delivered by KeyBank National Association in the capacities described above are listed in the Exhibit
Index.

With respect to the pari passu loan combinations that includes
the Renaissance New Orleans Portfolio Mortgage Loan and the La Gran Plaza Mortgage Loan, (i) the reports on assessment of compliance
with servicing criteria and attestation reports on assessment of compliance with servicing criteria of Torchlight Loan Services,
LLC, as special servicer of the Renaissance New Orleans Portfolio Mortgage Loan, Pentalpha Surveillance LLC, as operating advisor
of the Renaissance New Orleans Portfolio Mortgage Loan, Wells Fargo Bank, National Association, as primary servicer, certificate
administrator and custodian of the La Gran Plaza Mortgage Loan and certificate administrator and custodian of the Renaissance New
Orleans Portfolio Mortgage Loan, LNR Partners, LLC as special servicer of the La Gran Plaza Mortgage Loan, listed on the Exhibit
Index are omitted from this Annual Report on Form 10-K as they are not required to be included on this Annual Report on Form 10-K
per Instruction 3 to Item 1122 of Regulation AB because they are parties performing activities that address servicing criteria
relating to 5% or less of the assets of the issuing entity; and (ii) the servicer compliance statements of Torchlight Loan Services,
LLC, as special servicer of the Renaissance New Orleans Portfolio Mortgage Loan, Wells Fargo Bank, National Association, as primary
servicer and certificate administrator of the La Gran Plaza Mortgage Loan and certificate administrator of the Renaissance New
Orleans Portfolio Mortgage Loan and LNR Partners, LLC as special servicer of the La Gran Plaza Mortgage Loan, listed on the Exhibit
Index are omitted from this Annual Report on Form 10-K as they are not required by Item 1123 of Regulation AB to be included on
this Annual Report on Form 10-K because they are each an unaffiliated party that is not a “servicer” that meets the
criteria in Item 1108(a)(2)(i) through (iii) of Regulation AB.

PART I

Item 1. Business.

Omitted.

Item 1A. Risk Factors.

Omitted.

Item 1B. Unresolved Staff Comments.

None.

Item 2. Properties.

Omitted.

Item 3. Legal Proceedings.

Omitted.

Item 4. Mine Safety Disclosures.

Not applicable.

PART II

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

Omitted.

Item 6. Selected Financial Data.

Omitted.

Item 7. Management’s Discussion and Analysis of 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.

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 FOR REGULATION
AB

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

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

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 or other support for the certificates within this transaction as described under Item 1115 of Regulation AB.

Item 1117 of Regulation AB, Legal Proceedings.

The registrant knows of no material pending legal proceeding involving
the trust or any party related to the trust, other than routine litigation incidental to the duties of those respective parties,
and the following, with respect to Deutsche Bank Trust Company Americas, as custodian and certificate administrator, and Wells
Fargo Bank, National Association, as certificate administrator and custodian:

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 an action against DBNTC and DBTCA in New York State Supreme Court
alleging that DBNTC and DBTCA failed to perform purported duties, as trustees for 544 private-label RMBS trusts, to enforce breaches
of representations and warranties as to mortgage loans held by the trusts and to enforce breaches by servicers of their mortgage
loan servicing obligations for the trusts. During the course of the litigation, plaintiffs dismissed the case from New York State
Supreme Court and refiled two separate cases, one in the U.S. District Court for the Southern District of New York (the “BlackRock
SDNY Case”) and the other in the Superior Court of California, Orange County (the “BlackRock California Case”).
Pursuant to a settlement among the parties, the BlackRock SDNY Case was dismissed on December 6, 2018 and the BlackRock California
Case was dismissed on January 11, 2019.

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 U.S. Trust Indenture Act of 1939 (“TIA”); breach of contract;
breach of fiduciary duty; negligence and gross negligence; violation of New York’s 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’ TIA 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. On December 7, 2018, DBNTC and DBTCA filed a motion for
summary judgment. Also on December 7, 2018, plaintiffs, jointly with Commerzbank AG (see description of Commerzbank case below),
filed a motion for partial summary judgment.

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 TIA; 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 TIA 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. On December 7, 2018, DBNTC and DBTCA filed a motion
for summary judgment. Also on December 7, 2018, Commerzbank, jointly with the Phoenix Light plaintiffs, filed a motion for partial
summary judgment.

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 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 and
June 20, 2017, IKB voluntarily dismissed with prejudice all claims as to seven trusts. As of March 1, 2019, DBNTC and DBTCA’s
motion to dismiss has been briefed and is awaiting decision by the court.

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 under the related servicing agreement for this transaction.

Since June 18, 2014, a group of institutional investors have filed
civil complaints in the Supreme Court of the State of New York, New York County, and later the U.S. District Court for the Southern
District of New York against Wells Fargo Bank, N.A., (“Wells Fargo Bank”) in its capacity as trustee for certain residential
mortgage backed securities (“RMBS”) trusts. The complaints against Wells Fargo Bank alleged that the trustee caused
losses to investors and asserted causes of action based upon, among other things, the trustee's alleged failure to: (i) notify
and enforce repurchase obligations of mortgage loan sellers for purported breaches of representations and warranties, (ii) notify
investors of alleged events of default, and (iii) abide by appropriate standards of care following alleged events of default. Relief
sought included money damages in an unspecified amount, reimbursement of expenses, and equitable relief. Wells Fargo Bank has reached
an agreement, in which it denies any wrongdoing, to resolve these claims on a classwide basis for the 271 RMBS trusts currently
at issue. The settlement agreement is subject to court approval. Separate lawsuits against Wells Fargo Bank making similar allegations
filed by certain other institutional investors concerning 57 RMBS trusts in New York federal and state court are not covered by
the agreement. With respect to the foregoing litigations, Wells Fargo Bank believes plaintiffs' claims are without merit and intends
to contest the claims vigorously, but there can be no assurances as to the outcome of the litigations or the possible impact of
the litigations on Wells Fargo Bank or the RMBS trusts.

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

The information regarding this Item has been previously provided in
a prospectus supplement of the Registrant relating to the issuing entity filed on June 18, 2015 pursuant to Rule 424(b)(5).

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

The reports on assessments of compliance with the servicing criteria
for asset-backed securities and related attestation reports on such assessments of compliance with respect to the mortgage loans
are attached hereto under Item 15 to this Annual Report on Form 10-K. Attached as Schedule II to the Pooling and Servicing Agreement
incorporated by reference as Exhibit 4.1 to this Annual Report on Form 10-K is a chart identifying the entities participating in
a servicing function for the transaction responsible for each applicable servicing criteria set forth in Item 1122(d).

The reports on assessments of compliance with the servicing criteria
for asset-backed securities and related attestation reports on such assessments of compliance with respect to the Renaissance New
Orleans Portfolio Mortgage Loan, which is being serviced and administered pursuant to the pooling and servicing agreement for the
JPMBB 2015-C28 Transaction, are attached hereto under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit AA to the
pooling and servicing agreement for the JPMBB 2015-C28 Transaction incorporated by reference as Exhibit 4.2 to this Annual Report
on Form 10-K is a chart identifying the entities participating in a servicing function for the JPMBB 2015-C28 Transaction responsible
for each applicable servicing criteria set forth in Item 1122(d).

The reports on assessments of compliance with the servicing criteria
for asset-backed securities and related attestation reports on such assessments of compliance with respect to the La Gran Plaza
Mortgage Loan, which is being serviced and administered pursuant to the pooling and servicing agreement for the COMM 2015-CCRE24
Transaction, are attached hereto under Item 15 to this Annual Report on Form 10-K. Attached as Schedule II to the pooling and servicing
agreement for the COMM 2015-CCRE24 Transaction incorporated by reference as Exhibit 4.3 to this Annual Report on Form 10-K is a
chart identifying the entities participating in a servicing function for the COMM 2015-CCRE24 Transaction responsible for each
applicable servicing criteria set forth in Item 1122(d).

The report on assessment of compliance with applicable servicing criteria
furnished pursuant to Item 1122 of Regulation AB by Midland Loan Services, a Division of PNC Bank National Association discloses
that a material instance of noncompliance occurred, as described below:

Material Instance of Noncompliance

In certain instances, the Schedule AL Files (Item 1125 of Regulation
AB) were not reported in accordance with the terms specified in the transaction agreements, in conflict with Item 1122(d)(3)(i):
“Reports to investors, including those to be filed with the Commission, are maintained in accordance with the transaction
agreements and applicable Commission requirements. Specifically, such reports: (A) Are prepared in accordance with timeframes and
other terms set forth in the transaction agreements”. The noncompliance consisted of omitted or inaccurately reported numbers
due to the following: (1) the initial setup files contained information at the asset level, and Midland was required to manually
compile the information to present it at the loan level as required by Schedule AL; and (2) certain reporting requirements required
manual processing by Midland, including the use of various data computation formulas, quality control checks and analysis.

The identified instances did not involve the servicing of assets
included in this securitization.

Steps Taken to Remedy the Material Instance of Noncompliance

Midland is currently remediating the Schedule AL reporting for
the CMBS transactions found to be incorrect, and will be making improvements to its systems, processes and procedures to support
its Schedule AL reporting obligations.

Item 1123 of Regulation AB, Servicer Compliance Statement.

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

PART IV

Item 15. Exhibits, Financial Statement Schedules

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

(1) Not applicable

(2) Not applicable

(3) See below

| | 4.1 | Pooling and Servicing Agreement, dated as of June 1, 2015, by and among Deutsche Mortgage & Asset Receiving Corporation,
as Depositor, Midland Loan Services, a Division of PNC Bank, National Association, as Master Servicer, Midland Loan Services, a
Division of PNC Bank, National Association, as Special Servicer, Wilmington Trust, National Association, as Trustee, Deutsche Bank
Trust Company Americas, as Certificate Administrator, Paying Agent and Custodian, and Park Bridge Lender Services LLC, as Operating
Advisor (filed as Exhibit 4.1 to the registrant’s Current Report on Form 8-K/A filed on October 15, 2015 under Commission
File No. 333-193376-19 and incorporated by reference herein).
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 4.2 | Pooling and Servicing Agreement, dated as of April 1, 2015, by and among J.P. Morgan Chase Commercial Mortgage Securities Corp.,
as Depositor, Wells Fargo Bank, National Association, as Master Servicer, Torchlight Loan Services, LLC, as Special Servicer, Wells
Fargo Bank, National Association, as Certificate Administrator, Wilmington Trust, National Association, as Trustee, and Pentalpha
Surveillance LLC, as Senior Trust Advisor (filed as Exhibit 99.8 to the registrant’s Current Report on Form 8-K filed on
June 18, 2015 under Commission File No. 333-193376-19 and incorporated by reference herein).
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 4.3 | Pooling and Servicing Agreement, dated as of August 1, 2015, by and among Deutsche Mortgage & Asset Receiving Corporation,
as Depositor, Wells Fargo Bank, National Association, as Master Servicer, LNR Partners, LLC, as Special Servicer, Wilmington Trust,
National Association, as Trustee, Wells Fargo Bank, National Association, as Certificate Administrator, Paying Agent and Custodian,
and Park Bridge Lender Services LLC, as Operating Advisor (filed as Exhibit 99.1 to the registrant’s Current Report on Form
8-K filed on October 15, 2015 under Commission File No. 333-193376-19 and incorporated by reference herein).
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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

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

| | 33.1 | Midland Loan Services, a Division of PNC Bank, National Association, as Master Servicer
| | ---- | ---------------------------------------------------------------------------------------

| | 33.2 | Midland Loan Services, a Division of PNC Bank, National Association, as Special Servicer prior to July 5, 2018 (see Exhibit
33.1)
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------

| | 33.3 | Rialto Capital Advisors, LLC, as Special Servicer on and after July 5, 2018
| | ---- | ---------------------------------------------------------------------------

| | 33.4 | Wilmington Trust, National Association, as Trustee (Omitted. See Explanatory Notes.)
| | ---- | ------------------------------------------------------------------------------------

| | 33.5 | Deutsche Bank Trust Company Americas, as Certificate Administrator and Custodian
| | ---- | --------------------------------------------------------------------------------

| | 33.6 | Park Bridge Lender Services LLC, as Operating Advisor
| | ---- | -----------------------------------------------------

| | 33.7 | KeyBank National Association, as Primary Servicer
| | ---- | -------------------------------------------------

| | 33.8 | Berkeley Point Capital LLC d/b/a Newmark Knight Frank, as Primary Servicer
| | ---- | --------------------------------------------------------------------------

| | 33.9 | Wells Fargo Bank, National Association, as Primary Servicer (only with respect to the obligation to make property protection
and mortgage payment advances) of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.10 | KeyBank National Association, as Primary Servicer (except with respect to the obligation to make property protection and mortgage
payment advances) of the Renaissance New Orleans Portfolio Mortgage Loan (see Exhibit 33.7)
| | ----- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.11 | Torchlight Loan Services, LLC, as Special Servicer of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------

| | 33.12 | Wilmington Trust, National Association, as Trustee of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------

| | 33.13 | Wells Fargo Bank, National Association, as Certificate Administrator of the Renaissance New Orleans Portfolio Mortgage Loan
(Omitted. See Explanatory Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 33.14 | Wells Fargo Bank, National Association, as Custodian of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | ---------------------------------------------------------------------------------------------------------------------------------------------

| | 33.15 | Pentalpha Surveillance LLC, as Senior Trust Advisor of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | --------------------------------------------------------------------------------------------------------------------------------------------

| | 33.16 | Wells Fargo Bank, National Association, as Primary Servicer of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | --------------------------------------------------------------------------------------------------------------------------------

| | 33.17 | LNR Partners, LLC, as Special Servicer of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | -----------------------------------------------------------------------------------------------------------

| | 33.18 | Wilmington Trust, National Association, as Trustee of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | -----------------------------------------------------------------------------------------------------------------------

| | 33.19 | Wells Fargo Bank, National Association, as Certificate Administrator of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | -----------------------------------------------------------------------------------------------------------------------------------------

| | 33.20 | Wells Fargo Bank, National Association, as Custodian of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------

| | 33.21 | Park Bridge Lender Services LLC, as Operating Advisor of the La Gran Plaza Mortgage Loan (see Exhibit 33.6)
| | ----- | -----------------------------------------------------------------------------------------------------------

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

| | 34.1 | Midland Loan Services, a Division of PNC Bank, National Association, as Master Servicer
| | ---- | ---------------------------------------------------------------------------------------

| | 34.2 | Midland Loan Services, a Division of PNC Bank, National Association, as Special Servicer prior to July 5, 2018 (see Exhibit
34.1)
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------

| | 34.3 | Rialto Capital Advisors, LLC, as Special Servicer on and after July 5, 2018
| | ---- | ---------------------------------------------------------------------------

| | 34.4 | Wilmington Trust, National Association, as Trustee (Omitted. See Explanatory Notes.)
| | ---- | ------------------------------------------------------------------------------------

| | 34.5 | Deutsche Bank Trust Company Americas, as Certificate Administrator and Custodian
| | ---- | --------------------------------------------------------------------------------

| | 34.6 | Park Bridge Lender Services LLC, as Operating Advisor
| | ---- | -----------------------------------------------------

| | 34.7 | KeyBank National Association, as Primary Servicer
| | ---- | -------------------------------------------------

| | 34.8 | Berkeley Point Capital LLC d/b/a Newmark Knight Frank, as Primary Servicer
| | ---- | --------------------------------------------------------------------------

| | 34.9 | Wells Fargo Bank, National Association, as Primary Servicer (only with respect to the obligation to make property protection
and mortgage payment advances) of the Renaissance New Orleans Portfolio Mortgage Loan) (Omitted. See Explanatory Notes.)
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.10 | KeyBank National Association, as Primary Servicer (except with respect to the obligation to make property protection and mortgage
payment advances) of the Renaissance New Orleans Portfolio Mortgage Loan (see Exhibit 34.7)
| | ----- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.11 | Torchlight Loan Services, LLC, as Special Servicer of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------

| | 34.12 | Wilmington Trust, National Association, as Trustee of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------

| | 34.13 | Wells Fargo Bank, National Association, as Certificate Administrator of the Renaissance New Orleans Portfolio Mortgage Loan
(Omitted. See Explanatory Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 34.14 | Wells Fargo Bank, National Association, as Custodian of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | ---------------------------------------------------------------------------------------------------------------------------------------------

| | 34.15 | Pentalpha Surveillance LLC, as Senior Trust Advisor of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | --------------------------------------------------------------------------------------------------------------------------------------------

| | 34.16 | Wells Fargo Bank, National Association, as Primary Servicer of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | --------------------------------------------------------------------------------------------------------------------------------

| | 34.17 | LNR Partners, LLC, as Special Servicer of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | -----------------------------------------------------------------------------------------------------------

| | 34.18 | Wilmington Trust, National Association, as Trustee of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | -----------------------------------------------------------------------------------------------------------------------

| | 34.19 | Wells Fargo Bank, National Association, as Certificate Administrator of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | -----------------------------------------------------------------------------------------------------------------------------------------

| | 34.20 | Wells Fargo Bank, National Association, as Custodian of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------

| | 34.21 | Park Bridge Lender Services LLC, as Operating Advisor of the La Gran Plaza Mortgage Loan (see Exhibit 34.6)
| | ----- | -----------------------------------------------------------------------------------------------------------

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

| | 35.1 | Midland Loan Services, a Division of PNC Bank, National Association, as Master Servicer
| | ---- | ---------------------------------------------------------------------------------------

| | 35.2 | Midland Loan Services, a Division of PNC Bank, National Association, as Special Servicer prior to July 5, 2018 (see Exhibit
35.1)
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------

| | 35.3 | Rialto Capital Advisors, LLC, as Special Servicer on and after July 5, 2018
| | ---- | ---------------------------------------------------------------------------

| | 35.4 | Deutsche Bank Trust Company Americas, as Certificate Administrator
| | ---- | ------------------------------------------------------------------

| | 35.5 | KeyBank National Association, as Primary Servicer
| | ---- | -------------------------------------------------

| | 35.6 | Berkeley Point Capital LLC d/b/a Newmark Knight Frank, as Primary Servicer
| | ---- | --------------------------------------------------------------------------

| | 35.7 | Wells Fargo Bank, National Association, as Primary Servicer (only with respect to the obligation to make property protection
and mortgage payment advances) of the Renaissance New Orleans Portfolio Mortgage Loan) (Omitted. See Explanatory Notes.)
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 35.8 | KeyBank National Association, as Primary Servicer (except with respect to the obligation to make property protection and mortgage
payment advances) of the Renaissance New Orleans Portfolio Mortgage Loan (see Exhibit 35.5)
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 35.9 | Torchlight Loan Services, LLC, as Special Servicer of the Renaissance New Orleans Portfolio Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------

| | 35.10 | Wells Fargo Bank, National Association, as Certificate Administrator of the Renaissance New Orleans Portfolio Mortgage Loan
(Omitted. See Explanatory Notes.)
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 35.11 | Wells Fargo Bank, National Association, as Primary Servicer of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | --------------------------------------------------------------------------------------------------------------------------------

| | 35.12 | LNR Partners, LLC, as Special Servicer of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory Notes.)
| | ----- | -----------------------------------------------------------------------------------------------------------

| | 35.13 | Wells Fargo Bank, National Association, as Certificate Administrator of the La Gran Plaza Mortgage Loan (Omitted. See Explanatory
Notes.)
| | ----- | -----------------------------------------------------------------------------------------------------------------------------------------

| | 99.1 | Mortgage Loan Purchase Agreement, dated as of June 12, 2015, between Deutsche Mortgage & Asset Receiving Corporation and
German American Capital Corporation (filed as Exhibit 99.1 to the registrant’s Current Report on Form 8-K/A filed on October
15, 2015 under Commission File No. 333-193376-19 and incorporated by reference herein)
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 99.2 | Mortgage Loan Purchase Agreement, dated as of June 12, 2015, between Deutsche Mortgage & Asset Receiving Corporation and
Cantor Commercial Real Estate Lending, L.P. (filed as Exhibit 99.2 to the registrant’s Current Report on Form 8-K/A filed
on October 15, 2015 under Commission File No. 333-193376-19 and incorporated by reference herein)
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 99.3 | Mortgage Loan Purchase Agreement, dated as of June 12, 2015, among Deutsche Mortgage & Asset Receiving Corporation, Ladder
Capital Finance LLC, Ladder Capital Finance Holdings LLLP, Series TRS of Ladder Capital Finance Holdings LLLP and Series REIT of
Ladder Capital Finance Holdings LLLP (filed as Exhibit 99.3 to the registrant’s Current Report on Form 8-K/A filed on October
15, 2015 under Commission File No. 333-193376-19 and incorporated by reference herein)
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 99.4 | Mortgage Loan Purchase Agreement, dated as of June 12, 2015, between Deutsche Mortgage & Asset Receiving Corporation and
KeyBank National Association (filed as Exhibit 99.4 to the registrant’s Current Report on Form 8-K/A filed on October 15,
2015 under Commission File No. 333-193376-19 and incorporated by reference herein)
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 99.5 | Primary Servicing Agreement, dated as of June 1, 2015, between Midland Loan Services, a Division of PNC Bank, National Association
and KeyBank National Association (filed as Exhibit 99.5 to the registrant’s Current Report on Form 8-K filed on June 18,
2015 under Commission File No. 333-193376-19 and incorporated by reference herein)
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 99.6 | Primary Servicing Agreement, dated as of June 1, 2015, between Midland Loan Services, a Division of PNC Bank, National Association
and Berkeley Point Capital LLC (filed as Exhibit 99.6 to the registrant’s Current Report on Form 8-K filed on June 18, 2015
under Commission File No. 333-193376-19 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 and in the Exhibit Index that immediately
follows the signature page hereof.

(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.

Deutsche Mortgage & Asset Receiving Corporation
(Depositor)

/s/ Helaine M. Kaplan

Helaine M. Kaplan, President

(senior officer in charge of securitization of the depositor)

Date: March 21, 2019

/s/ Matt Smith

Matt Smith, Director

Date: March 21, 2019