UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

 Washington, D.C. 20549

 FORM 10-K

 (Mark One)

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

 For the fiscal year ended December 31, 2023

or

 o 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: 333-227784-03

 Central Index Key Number of the issuing entity:
0001769322

 UBS Commercial Mortgage Trust
2019-C16

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

 Central Index Key Number of the depositor: 0001532799

 UBS Commercial Mortgage
Securitization Corp.

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

 Central Index Key Number of the sponsor: 0001685185

 UBS AG, acting through its branch
located at 1285 Avenue of the Americas, New York, New York

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

 Central Index Key Number of the sponsor: 0001592182

 LMF Commercial, LLC

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

 (formerly known as Rialto
Mortgage Finance, LLC)

 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: 0001541557

 Morgan Stanley Mortgage Capital
Holdings LLC

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

 New York

 (State or other jurisdiction of

 incorporation or organization of

 the issuing entity)

 38-4104457

 38-4104458

 38-7221282

 (I.R.S. Employer

 Identification Numbers)

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

 Wells Fargo Bank, National Association

 as Certificate Administrator

 9062 Old Annapolis Road

 Columbia, MD

 (Address of principal
executive offices of the issuing entity)

 21045

 (Zip Code)

 Registrant's telephone number,
including area code:

 (212) 713-2000

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

 Title of each class

 Trading Symbol(s)

 Name of each exchange on which registered

 None

 Securities registered pursuant to Section 12(g) of 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 o No

 Indicate by check mark whether the registrant has submitted
electronically every Interactive Data File required to be submitted 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 such files).

 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
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 has filed a
report on and attestation to its management's assessment of the effectiveness
of its internal control over financial reporting under Section 404(b) of the
Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm
that prepared or issued its audit report. o

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

 Indicate by check mark whether any of those error corrections
are restatements that required a recovery analysis of incentive-based
compensation received by any of the registrant's executive officers during the
relevant recovery period pursuant to §240.10D-1(b). 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.

 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

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

 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).

 EXPLANATORY NOTES

 The Colonnade Office Complex Mortgage Loan,
the Dominion Tower Mortgage Loan and the Southern Motion Industrial Portfolio
Mortgage Loan, which constituted approximately 6.9%, 6.7% and 4.6%,
respectively, of the asset pool of the issuing entity as of its cut-off date,
are each an asset of the issuing entity and are each part of a loan combination
that includes (a) with respect to The Colonnade Office Complex Mortgage Loan,
six other pari passu loans and seven subordinate companion loans, each
of which are not assets of the issuing entity, (b) with respect to the Dominion
Tower Mortgage Loan, one other pari passu loan, which is not an asset of
the issuing entity and (c) with respect to the Southern Motion Industrial
Portfolio Mortgage Loan, two other pari passu loans, which are not
assets of the issuing entity. These loan combinations, including The Colonnade
Office Complex Mortgage Loan, the Dominion Tower Mortgage Loan and the Southern
Motion Industrial Portfolio Mortgage Loan, are being serviced and administered
pursuant to the Pooling and Servicing Agreement, which is incorporated by
reference as Exhibit 4.1 to this Annual Report on Form 10-K. The Great Value
Storage Portfolio Mortgage Loan, previously an asset of the issuing entity
being serviced under the Pooling and Servicing Agreement, 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 16300 Roscoe Blvd Mortgage Loan, which
constituted approximately 1.2% of the asset pool of the issuing entity as of
its cut-off date. The 16300 Roscoe Blvd Mortgage Loan is an asset of the
issuing entity and is part of a loan combination that includes the 16300 Roscoe
Blvd 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 UBS Commercial Mortgage Trust 2018-C15
transaction, Commission File Number 333-227784-02 (the " UBS 2018-C15
Transaction "). This loan combination, including the 16300 Roscoe Blvd
Mortgage Loan, is being serviced and administered pursuant to the pooling and
servicing agreement for the UBS 2018-C15 Transaction, which is incorporated by
reference as Exhibit 4.2 to this Annual Report 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 ILPT Hawaii Portfolio Mortgage Loan, which
constituted approximately 3.4% of the asset pool of the issuing entity as of
its cut-off date. The ILPT Hawaii Portfolio Mortgage Loan is an asset of
the issuing entity and is part of a loan combination that includes the ILPT
Hawaii Portfolio Mortgage Loan and seventeen other pari passu loans,
which are not assets of the issuing entity. A pari passu portion of the
loan combination was securitized in the ILPT Trust 2019-SURF transaction (the " ILPT
2019-SURF Transaction "). This loan combination, including the ILPT Hawaii
Portfolio Mortgage Loan, is being serviced and administered pursuant to the
trust and servicing agreement for the ILPT 2019-SURF Transaction, which is
incorporated by reference as Exhibit 4.3 to this Annual Report on Form 10-K.

 The Heartland Dental Medical
Office Portfolio Mortgage Loan, previously an asset of the issuing entity, 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 Block Northway Mortgage Loan, which constituted
approximately 3.4% of the asset pool of the issuing entity as of its cut-off
date. The Block Northway Mortgage Loan is an asset of the issuing entity
and is part of a loan combination that includes The Block Northway Mortgage
Loan and seven other pari passu loans, which are not assets of the
issuing entity. This loan combination, including The Block Northway Mortgage
Loan, was serviced under the Pooling and Servicing Agreement for the issuing
entity prior to the closing of the securitization of a pari passu
portion of The Block Northway loan combination in the BBCMS Mortgage Trust
2019-C3 transaction, Commission File Number 333-226850-02 (the " BBCMS
2019-C3 Transaction "). After the closing of the BBCMS 2019-C3
Transaction on June 11, 2019, this loan combination, including The Block
Northway Mortgage Loan was, and will continue to be, serviced and administered
pursuant to the pooling and servicing agreement with respect to the BBCMS
2019-C3 Transaction, which is incorporated by reference as Exhibit 4.4 to this
Annual Report on Form 10-K.

 The master servicer of a pooling
and servicing agreement or trust and servicing agreement also functions as the
primary servicer of the related mortgage loans serviced and administered
pursuant to such agreement unless a separate primary servicer is identified
herein. If this report does not identify a separate primary servicer, the
servicer compliance statement provided by the master servicer under any such
agreement also encompasses its responsibilities as primary servicer of the
related mortgage loan or mortgage loans.

 Midland Loan Services, a Division
of PNC Bank, National Association is the master servicer and special servicer
of the mortgage loans serviced under the Pooling and Servicing Agreement, the
primary servicer of the ILPT Hawaii Portfolio Mortgage Loan, The Block Northway
Mortgage Loan and the 16300 Roscoe Blvd Mortgage Loan and the special servicer
of The Block Northway Mortgage Loan prior to May 10, 2023, the 16300 Roscoe
Blvd Mortgage Loan prior to May 2, 2023 and The Colonnade Office Complex
Mortgage Loan prior to October 30, 2023. As a result, Midland Loan Services, a
Division of PNC Bank, 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 Midland Loan Services, a Division of PNC
Bank, National Association in the capacities described above are listed in the
Exhibit Index.

 Mount Street US (Georgia) LLP is
the special servicer of The Colonnade Office Complex Mortgage Loan, which
constituted approximately 6.9% of the asset pool of the issuing entity as of
its cut-off date. In accordance with the Compliance and Disclosure
Interpretations, Section 200.03 (Rules 13a-18 and 15d-18, Servicer's Assessment
of Compliance), this percentage must be reduced pro rata because it was only
acting as special servicer of The Colonnade Office Complex Mortgage Loan from
October 30, 2023 to December 31, 2023. As a result, it falls below the de
minimis requirements in Item 1122 of Regulation AB and no such assessment or
attestation is required.

 Wells Fargo Bank, National
Association is the custodian of the mortgage loans serviced under the Pooling
and Servicing Agreement, the ILPT Hawaii Portfolio Mortgage Loan, The Block
Northway Mortgage Loan and the 16300 Roscoe Blvd Mortgage Loan. As a
result, Wells Fargo Bank, National Association 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 Wells Fargo Bank, National
Association in the capacities described above are listed in the Exhibit Index.

 Park Bridge Lender Services LLC is
the operating advisor of the mortgage loans serviced under the Pooling and
Servicing Agreement and the ILPT Hawaii Portfolio 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.

 Wells Fargo Bank, National Association
acts as trustee of The Colonnade Office Complex Mortgage Loan, the Dominion
Tower Mortgage Loan, the Southern Motion Industrial Portfolio Mortgage Loan,
the 16300 Roscoe Blvd Mortgage Loan, the ILPT Hawaii Portfolio Mortgage Loan
and The Block Northway Mortgage Loan. Pursuant to the Pooling and
Servicing Agreement, the pooling and servicing agreement for the UBS 2018-C15
Transaction, the trust and servicing agreement for the ILPT 2019-SURF
Transaction and the pooling and servicing agreement for the BBCMS 2019-C3
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 Colonnade Office Complex Mortgage Loan, the Dominion Tower Mortgage Loan,
the Southern Motion Industrial Portfolio Mortgage Loan, the 16300 Roscoe Blvd
Mortgage Loan, the ILPT Hawaii Portfolio Mortgage Loan and The Block Northway
Mortgage Loan have delivered one or more assessments of compliance with respect
to Item 1122(d)(2)(iii) of Regulation AB.

 This Annual Report on Form 10-K
includes an assessment of compliance with applicable servicing criteria,
accountants' attestation report and servicer compliance statement from
Computershare Trust Company, National Association (" CTCNA "). CTCNA
was engaged by Wells Fargo Bank, National Association (" Wells Fargo "),
in its capacity as certificate administrator and custodian, to perform certain
specified servicing functions identified in the assessment of compliance with
applicable servicing criteria and accountants' attestation reports. Wells
Fargo engaged CTCNA in connection with the sale of Wells Fargo's corporate
trust services business to CTCNA and its affiliates. Further, under the
principles-based definition of "servicer" set forth in Item 1101(j) of
Regulation AB that looks to the functions that an entity performs, this party
is a "servicer" for the purposes of Item 1123 of Regulation AB. See
Compliance and Disclosure Interpretations, Section 301.01 (Item 1101(j)).

 The
assessments of compliance with applicable servicing criteria, accountants'
attestation reports and servicer compliance statements of the certificate
administrator of the 16300 Roscoe Blvd Mortgage Loan, the ILPT Hawaii Portfolio
Mortgage Loan and The Block Northway Mortgage Loan are omitted from this Annual
Report on Form 10-K as the certificate administrator pursuant to the related
pooling and servicing agreement or trust and servicing agreement does not
perform any activities that address servicing criteria with respect to the
issuing entity and because they are each not a "servicer" that meets the
criteria in Item 1108(a)(2)(i) through (iii) of Regulation AB.

 With respect to the pari passu
loan combinations that include the 16300 Roscoe Blvd Mortgage Loan, The Block
Northway Mortgage Loan, the ILPT Hawaii Portfolio Mortgage Loan and The
Colonnade Office Complex Mortgage Loan, (i) the reports on assessment of
compliance with servicing criteria and attestation reports on assessment of
compliance with servicing criteria of Rialto Capital Advisors, LLC as special
servicer of the ILPT Hawaii Portfolio Mortgage Loan, K-Star Asset Management
LLC as special servicer of The Block Northway Mortgage Loan on and after May
10, 2023 and the 16300 Roscoe Blvd Mortgage Loan on and after May 2, 2023 and
Pentalpha Surveillance LLC as operating advisor of the 16300 Roscoe Blvd
Mortgage Loan and The Block Northway 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 the report on assessment of compliance with servicing criteria and
attestation report on assessment of compliance with servicing criteria of Mount
Street US (Georgia) LLP as special servicer of The Colonnade Office Complex
Mortgage Loan on and after October 30, 2023 listed on the Exhibit Index are
omitted from this Annual Report on Form 10-K for the reasons set forth in the
Explanatory Notes above; and (ii) the servicer compliance statements of K-Star
Asset Management LLC as special servicer of The Block Northway Mortgage Loan on
and after May 10, 2023 and the 16300 Roscoe Blvd Mortgage Loan on and after May
2, 2023, Rialto Capital Advisors, LLC as special servicer of the ILPT Hawaii
Portfolio Mortgage Loan and Mount Street US (Georgia) LLP as special servicer
of The Colonnade Office Complex Mortgage Loan on and after October 30, 2023,
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.

 Item 1. Business.

 Item 1A. Risk Factors.

 Item 1B. Unresolved Staff Comments.

 None.

 Item 1C. Cybersecurity.

 Item 2. Properties.

 Item 3. Legal Proceedings.

 Item 4. Mine Safety Disclosures.

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

 Item 6. [Reserved]

 Item 7. Management's Discussion and Analysis of
Financial Condition and Results of Operations.

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

 Item 8. Financial Statements and Supplementary Data.

 Item 9. Changes in and Disagreements With
Accountants on Accounting and Financial Disclosure.

 Item 9A. Controls and Procedures.

 Item 9B. Other Information.

 None.

 Item 9C. Disclosure Regarding Foreign Jurisdictions
that Prevent Inspections.

 None.

 Item 10. Directors, Executive Officers and Corporate
Governance.

 Item 11. Executive Compensation.

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

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

 Item 14. Principal Accountant Fees and Services.

 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 Wells Fargo Bank, National Association, as trustee,
certificate administrator and custodian.

 In December 2014, Phoenix Light SF
Limited (Phoenix Light) and certain related entities filed a complaint in the
United States District Court for the Southern District of New York alleging
claims against Wells Fargo Bank, N.A., in its capacity as trustee for a number
of residential mortgage-backed securities (RMBS) trusts. Complaints raising
similar allegations have been filed by Commerzbank AG in the Southern District
of New York, IKB International and IKB Deutsche Industriebank (together, IKB)
in New York state court, and Park Royal I LLC and Park Royal II LLC in New York
state court. In each case, the plaintiffs allege that Wells Fargo Bank, N.A.,
as trustee, caused losses to investors, and plaintiffs assert causes of action
based upon, among other things, the trustee's alleged failure to notify and
enforce repurchase obligations of mortgage loan sellers for purported breaches
of representations and warranties, notify investors of alleged events of
default, and abide by appropriate standards of care following alleged events of
default. In July 2022, the district court dismissed Phoenix Light's claims and
certain of the claims asserted by Commerzbank AG, and subsequently entered judgment
in each case in favor of Wells Fargo Bank, N.A. In August 2022, Phoenix Light
and Commerzbank AG each appealed the district court's decision to the United
States Court of Appeals for the Second Circuit. Phoenix Light dismissed its
appeal in May 2023, terminating its case. In November 2023, Wells Fargo Bank,
N.A. entered into an agreement with IKB to resolve IKB's claims. Wells Fargo
Bank, N.A. previously settled two class actions filed by institutional
investors and an action filed by the National Credit Union Administration with
similar allegations.

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

 The information regarding this Item has been previously
provided in the prospectus of the Registrant relating to the issuing entity
filed on April 16, 2019 pursuant to Rule 424(b)(2).

 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 Exhibit Z
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 16300 Roscoe Blvd Mortgage Loan,
which is being serviced and administered pursuant to the pooling and servicing
agreement for the UBS 2018-C15 Transaction, are attached hereto under Item 15
to this Annual Report on Form 10-K. Attached as Exhibit Z to the pooling and
servicing agreement for the UBS 2018-C15 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 UBS 2018-C15 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 ILPT Hawaii Portfolio Mortgage
Loan, which is being serviced and administered pursuant to the trust and
servicing agreement for the ILPT 2019-SURF Transaction, are attached hereto
under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit L to the
trust and servicing agreement for the ILPT 2019-SURF 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 ILPT
2019-SURF 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 Block Northway Mortgage Loan,
which is being serviced and administered pursuant to the pooling and servicing
agreement for the BBCMS 2019-C3 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 BBCMS 2019-C3 Transaction incorporated by reference
as Exhibit 4.4 to this Annual Report on Form 10-K is a chart identifying the
entities participating in a servicing function for the BBCMS 2019-C3
Transaction responsible for each applicable servicing criteria set forth in
Item 1122(d).

 Item 1123 of Regulation AB, Servicer Compliance Statement.

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

 Item 15. Exhibit and 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 April 1,
2019, by and among UBS Commercial Mortgage Securitization Corp., as Depositor,
Midland Loan Services, a Division of PNC Bank, National Association, as Master
Servicer and as Special Servicer, Wells Fargo Bank, National Association, as
Certificate Administrator and as Trustee, and Park Bridge Lender Services LLC,
as Operating Advisor and Asset Representations Reviewer (filed as Exhibit 4.1
to the registrant's Current Report on Form 8-K filed on April 16, 2019 under
Commission File No. 333-227784-03 and incorporated by reference herein).

 4.2
 Pooling and Servicing Agreement, dated as of December 1,
2018, by and among UBS Commercial Mortgage Securitization Corp., as Depositor,
Midland Loan Services, a Division of PNC Bank, National Association, as Master
Servicer and as Special Servicer, Wells Fargo Bank, National Association, as
Certificate Administrator and as Trustee, and Pentalpha Surveillance LLC, as
Operating Advisor and as Asset Representations Reviewer (filed as Exhibit 4.4
to the registrant's Current Report on Form 8-K filed on April 16, 2019 under
Commission File No. 333-227784-03 and incorporated by reference herein).

 4.3
 Trust and Servicing Agreement, dated as of March 7, 2019,
by and among Morgan Stanley Capital I Inc., as Depositor, Midland Loan
Services, a Division of PNC Bank, National Association, as Servicer, Rialto
Capital Advisors, LLC, as Special Servicer, Wells Fargo Bank, National
Association, as Certificate Administrator, Custodian and Trustee, and Park Bridge
Lender Services LLC, as Operating Advisor (filed as Exhibit 4.3 to the
registrant's Current Report on Form 8-K filed on April 16, 2019 under
Commission File No. 333-227784-03 and incorporated by reference herein).

 4.4
 Pooling and Servicing Agreement, dated as of June 1,
2019, by and among Barclays Commercial Mortgage Securities LLC, 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, Wells Fargo Bank, National Association, as Certificate
Administrator, Wells Fargo Bank, National Association, as Trustee, and
Pentalpha Surveillance LLC, as Operating Advisor and as Asset Representations
Reviewer (filed as Exhibit 4.1 to the registrant's Current Report on Form 8-K
filed on June 14, 2019 under Commission File No. 333-227784-03 and incorporated
by reference herein).

 4.5
 Amended and Restated Agreement Among Noteholders, dated
as of March 25, 2019 by and among UBS AG, by and through its branch office at
1285 Avenue of the Americas, New York, New York, as Note A-1 Holder, Note A-2-1
Holder, Note A-2-2 Holder, Note A-2-3 Holder, Note A-3 Holder, Note A-4 Holder,
Note A-5 Holder, Note A-6 Holder, Note A-7 Holder and Note A-8 Holder, The
Lincoln National Life Insurance Company, as Note B-1 Holder, Athene Annuity
& Life Assurance Company, as Note B-2 Holder, Note B-5 Holder and Note B-6
Holder, Athene Annuity and Life Company, as Note B-3 Holder, American Equity
Investment Life Insurance Company, as Note B-4 Holder, and Nonghyup Bank as
Trustee for UP Global Private Real Estate Fund V, as Note C Holder (filed as
Exhibit 4.5 to the registrant's Current Report on Form 8-K filed on April 16,
2019 under Commission File No. 333-227784-03 and incorporated by reference herein).

 4.6
 Co-Lender Agreement, dated as of February 27, 2019,
between Ladder Capital Finance VIII TRS LLC, as Note A-1 Holder, Ladder Capital
Finance VIII TRS LLC, as Note A-2-A Holder, and Ladder Capital Finance VIII TRS
LLC, as Note A-3-A Holder (filed as Exhibit 4.6 to the registrant's Current
Report on Form 8-K filed on April 16, 2019 under Commission File No.
333-227784-03 and incorporated by reference herein).

 4.7
 Agreement Between Note Holders, dated as of April 16,
2019, by and between, UBS AG, by and through its branch office at 1285 Avenue
of the Americas, New York, New York, as Initial Note A-1 Holder, Initial Note
A-2 Holder, Initial Note A-3 Holder, Initial Note A-4 Holder, Initial Note A-5
Holder and Initial Note A-6 Holder (filed as Exhibit 4.8 to the registrant's
Current Report on Form 8-K filed on April 16, 2019 under Commission File No.
333-227784-03 and incorporated by reference herein).

 4.8
 Agreement Between Note Holders, dated as of March 7,
2019, by and between Morgan Stanley Bank, N.A., as Initial Note A-1 Holder,
Initial Note A-5-1 Holder, Initial Note A-5-2 Holder, Initial Note A-5-3 Holder
and Initial Note A-5-4 Holder, Citi Real Estate Funding Inc., as Initial Note
A-2 Holder, Initial Note A-6-1 Holder, Initial Note A-6-2 Holder and Initial
Note A-6-3 Holder, and UBS AG, by and through its branch office at 1285 Avenue
of the Americas, New York, New York, as Initial Note A-3 Holder, Initial Note
A-7-1 Holder, Initial Note A-7-2 Holder, Initial Note A-9 Holder, Initial Note
A-10 Holder and Initial Note A-11 Holder, and JPMorgan Chase Bank, National
Association, as Initial Note A-4 Holder, Initial Note A-8-1 Holder and Initial
Note A-8-2 Holder (filed as Exhibit 4.11 to the registrant's Current Report on
Form 8-K filed on April 16, 2019 under Commission File No. 333-227784-03 and
incorporated by reference herein).

 4.9
 Agreement Between Note Holders, dated as of March 14,
2019, by and between, UBS AG, by and through its branch office at 1285 Avenue
of the Americas, New York, New York, as Initial Note A-1 Holder, Initial Note
A-3 Holder, Initial Note A-6 Holder and Initial Note A-7-1 Holder, and Morgan
Stanley Mortgage Capital Holdings LLC, as Initial Note A-2 Holder, Initial Note
A-4 Holder, Initial Note A-5 Holder, Initial Note A-7-2 Holder and Initial Note
A-8 Holder (filed as Exhibit 4.12 to the registrant's Current Report on Form
8-K filed on April 16, 2019 under Commission File No. 333-227784-03 and
incorporated by reference herein).

 4.10 Agreement Between Note Holders, dated as of December 28,
2018, by and between UBS AG, by and through its branch office at 1285 Avenue of
the Americas, New York, New York, as Initial Note A-1 Holder, and UBS AG, by
and through its branch office at 1285 Avenue of the Americas, New York, New
York, as Initial Note A-2 Holder (filed as Exhibit 4.13 to the registrant's
Current Report on Form 8-K filed on April 16, 2019 under Commission File No.
333-227784-03 and incorporated by reference herein).

 4.11 Primary Servicing Agreement, dated as of May 1, 2019,
between Wells Fargo Bank, National Association, as Master Servicer, and Midland
Loan Services, a Division of PNC Bank, National Association, as Primary
Servicer (filed as Exhibit 99.1 to the registrant's Current Report on Form
8-K/A filed on February 21, 2020 under Commission File No. 333-227784-03 and
incorporated by reference herein).

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

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

 33.1
National Association, as Master Servicer

 33.2
National Association, as Special Servicer (see Exhibit 33.1)

 33.3
 Wells Fargo Bank, National Association, as Trustee
and Certificate Administrator

 33.4
Custodian

 33.5
Advisor

 33.6
as Servicing Function Participant for the Certificate Administrator

 33.7
as Servicing Function Participant for the Custodian

 33.8
National Association, as Primary Servicer of The Colonnade Office Complex
Mortgage Loan (see Exhibit 33.1)

 33.9
National Association, as Special Servicer of The Colonnade Office Complex
Mortgage Loan prior to October 30, 2023 (see Exhibit 33.1)

 33.10
Mount Street US (Georgia) LLP, as Special Servicer of The Colonnade Office
Complex Mortgage Loan on and after October, 30, 2023 (Omitted. See Explanatory
Notes.)

 33.11
Wells Fargo Bank, National Association, as Trustee of The Colonnade Office
Complex Mortgage Loan (Omitted. See Explanatory Notes.)

 33.12
Custodian of The Colonnade Office Complex Mortgage Loan (see Exhibit 33.4)

 33.13
Advisor of The Colonnade Office Complex Mortgage Loan (see Exhibit 33.5)

 33.14

 33.15
National Association, as Primary Servicer of the Dominion Tower Mortgage Loan
(see Exhibit 33.1)

 33.16
National Association, as Special Servicer of the Dominion Tower Mortgage Loan
(see Exhibit 33.1)

 33.17
Wells Fargo Bank, National Association, as Trustee of the Dominion Tower

 33.18
Custodian of the Dominion Tower Mortgage Loan (see Exhibit 33.4)

 33.19
Advisor of the Dominion Tower Mortgage Loan (see Exhibit 33.5)

 33.20

 33.21
National Association, as Primary Servicer of the Southern Motion Industrial
Portfolio Mortgage Loan (see Exhibit 33.1)

 33.22
National Association, as Special Servicer of the Southern Motion Industrial
Portfolio Mortgage Loan (see Exhibit 33.1)

 33.23
Wells Fargo Bank, National Association, as Trustee of the Southern Motion
Industrial Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

 33.24
Custodian of the Southern Motion Industrial Portfolio Mortgage Loan (see
Exhibit 33.4)

 33.25
Advisor of the Southern Motion Industrial Portfolio Mortgage Loan (see Exhibit
33.5)

 33.26

 33.27
National Association, as Primary Servicer of the 16300 Roscoe Blvd Mortgage
Loan (see Exhibit 33.1)

 33.28
National Association, as Special Servicer of the 16300 Roscoe Blvd Mortgage
Loan prior to May 2, 2023 (see Exhibit 33.1)

 33.29
K-Star Asset Management LLC, as Special Servicer of the 16300 Roscoe Blvd
Mortgage Loan on and after May 2, 2023 (Omitted. See Explanatory Notes.)

 33.30
Wells Fargo Bank, National Association, as Trustee of the 16300 Roscoe Blvd

 33.31
Custodian of the 16300 Roscoe Blvd Mortgage Loan (see Exhibit 33.4)

 33.32
Pentalpha Surveillance LLC, as Operating Advisor of the 16300 Roscoe Blvd

 33.33

 33.34
National Association, as Primary Servicer of the ILPT Hawaii Portfolio Mortgage
Loan (see Exhibit 33.1)

 33.35
Rialto Capital Advisors, LLC, as Special Servicer of the ILPT Hawaii Portfolio

 33.36
Wells Fargo Bank, National Association, as Trustee of the ILPT Hawaii Portfolio

 33.37
Custodian of the ILPT Hawaii Portfolio Mortgage Loan (see Exhibit 33.4)

 33.38
Advisor of the ILPT Hawaii Portfolio Mortgage Loan (see Exhibit 33.5)

 33.39

 33.40
 Midland Loan Services, a Division of PNC Bank, National
Association, as Primary Servicer of The Block Northway Mortgage Loan (see
Exhibit 33.1)

 33.41
National Association, as Special Servicer of The Block Northway Mortgage Loan
prior to May 10, 2023 (see Exhibit 33.1)

 33.42
K-Star Asset Management LLC, as Special Servicer of The Block Northway Mortgage
Loan on and after May 10, 2023 (Omitted. See Explanatory Notes.)

 33.43
Wells Fargo Bank, National Association, as Trustee of The Block Northway

 33.44
Custodian of The Block Northway Mortgage Loan (see Exhibit 33.4)

 33.45
Pentalpha Surveillance LLC, as Operating Advisor of The Block Northway Mortgage
Loan (Omitted. See Explanatory Notes.)

 33.46

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

 34.1
National Association, as Master Servicer

 34.2
National Association, as Special Servicer (see Exhibit 34.1)

 34.3
 Wells Fargo Bank, National Association, as Trustee
and Certificate Administrator

 34.4
Custodian

 34.5
Advisor

 34.6
as Servicing Function Participant for the Certificate Administrator

 34.7
as Servicing Function Participant for the Custodian

 34.8
National Association, as Primary Servicer of The Colonnade Office Complex
Mortgage Loan (see Exhibit 34.1)

 34.9
National Association, as Special Servicer of The Colonnade Office Complex
Mortgage Loan prior to October 30, 2023 (see Exhibit 34.1)

 34.10
Mount Street US (Georgia) LLP, as Special Servicer of The Colonnade Office
Complex Mortgage Loan on and after October, 30, 2023 (Omitted. See Explanatory
Notes.)

 34.11
Wells Fargo Bank, National Association, as Trustee of The Colonnade Office
Complex Mortgage Loan (Omitted. See Explanatory Notes.)

 34.12
Custodian of The Colonnade Office Complex Mortgage Loan (see Exhibit 34.4)

 34.13
Advisor of The Colonnade Office Complex Mortgage Loan (see Exhibit 34.5)

 34.14

 34.15
National Association, as Primary Servicer of the Dominion Tower Mortgage Loan
(see Exhibit 34.1)

 34.16
National Association, as Special Servicer of the Dominion Tower Mortgage Loan
(see Exhibit 34.1)

 34.17
Wells Fargo Bank, National Association, as Trustee of the Dominion Tower

 34.18
Custodian of the Dominion Tower Mortgage Loan (see Exhibit 34.4)

 34.19
Advisor of the Dominion Tower Mortgage Loan (see Exhibit 34.5)

 34.20

 34.21
National Association, as Primary Servicer of the Southern Motion Industrial
Portfolio Mortgage Loan (see Exhibit 34.1)

 34.22
National Association, as Special Servicer of the Southern Motion Industrial
Portfolio Mortgage Loan (see Exhibit 34.1)

 34.23
Wells Fargo Bank, National Association, as Trustee of the Southern Motion
Industrial Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

 34.24
Custodian of the Southern Motion Industrial Portfolio Mortgage Loan (see
Exhibit 34.4)

 34.25
Advisor of the Southern Motion Industrial Portfolio Mortgage Loan (see Exhibit
34.5)

 34.26

 34.27
National Association, as Primary Servicer of the 16300 Roscoe Blvd Mortgage
Loan (see Exhibit 34.1)

 34.28
 Midland Loan Services, a Division of PNC Bank, National
Association, as Special Servicer of the 16300 Roscoe Blvd Mortgage Loan prior
to May 2, 2023 (see Exhibit 34.1)

 34.29
K-Star Asset Management LLC, as Special Servicer of the 16300 Roscoe Blvd
Mortgage Loan on and after May 2, 2023 (Omitted. See Explanatory Notes.)

 34.30
Wells Fargo Bank, National Association, as Trustee of the 16300 Roscoe Blvd

 34.31
Custodian of the 16300 Roscoe Blvd Mortgage Loan (see Exhibit 34.4)

 34.32
Pentalpha Surveillance LLC, as Operating Advisor of the 16300 Roscoe Blvd

 34.33

 34.34
National Association, as Primary Servicer of the ILPT Hawaii Portfolio Mortgage
Loan (see Exhibit 34.1)

 34.35
Rialto Capital Advisors, LLC, as Special Servicer of the ILPT Hawaii Portfolio

 34.36
Wells Fargo Bank, National Association, as Trustee of the ILPT Hawaii Portfolio

 34.37
Custodian of the ILPT Hawaii Portfolio Mortgage Loan (see Exhibit 34.4)

 34.38
Advisor of the ILPT Hawaii Portfolio Mortgage Loan (see Exhibit 34.5)

 34.39

 34.40
National Association, as Primary Servicer of The Block Northway Mortgage Loan
(see Exhibit 34.1)

 34.41
National Association, as Special Servicer of The Block Northway Mortgage Loan
prior to May 10, 2023 (see Exhibit 34.1)

 34.42
K-Star Asset Management LLC, as Special Servicer of The Block Northway Mortgage
Loan on and after May 10, 2023 (Omitted. See Explanatory Notes.)

 34.43
Wells Fargo Bank, National Association, as Trustee of The Block Northway

 34.44
Custodian of The Block Northway Mortgage Loan (see Exhibit 34.4)

 34.45
Pentalpha Surveillance LLC, as Operating Advisor of The Block Northway Mortgage
Loan (Omitted. See Explanatory Notes.)

 34.46

Servicer compliance statements.

 35.1
National Association, as Master Servicer

 35.2
National Association, as Special Servicer (see Exhibit 35.1)

 35.3
Certificate Administrator

 35.4
as Servicing Function Participant for the Certificate Administrator

 35.5
National Association, as Primary Servicer of The Colonnade Office Complex
Mortgage Loan (see Exhibit 35.1)

 35.6
National Association, as Special Servicer of The Colonnade Office Complex
Mortgage Loan prior to October 30, 2023 (see Exhibit 35.1)

 35.7
Mount Street US (Georgia) LLP, as Special Servicer of The Colonnade Office
Complex Mortgage Loan on and after October, 30, 2023 (Omitted. See Explanatory
Notes.)

 35.8
National Association, as Primary Servicer of the Dominion Tower Mortgage Loan
(see Exhibit 35.1)

 35.9
National Association, as Special Servicer of the Dominion Tower Mortgage Loan
(see Exhibit 35.1)

 35.10
National Association, as Primary Servicer of the Southern Motion Industrial
Portfolio Mortgage Loan (see Exhibit 35.1)

 35.11
National Association, as Special Servicer of the Southern Motion Industrial
Portfolio Mortgage Loan (see Exhibit 35.1)

 35.12
National Association, as Primary Servicer of the 16300 Roscoe Blvd Mortgage
Loan (see Exhibit 35.1)

 35.13
National Association, as Special Servicer of the 16300 Roscoe Blvd Mortgage
Loan prior to May 2, 2023 (see Exhibit 35.1)

 35.14
K-Star Asset Management LLC, as Special Servicer of the 16300 Roscoe Blvd
Mortgage Loan on and after May 2, 2023 (Omitted. See Explanatory Notes.)

 35.15
National Association, as Primary Servicer of the ILPT Hawaii Portfolio Mortgage
Loan (see Exhibit 35.1)

 35.16
Rialto Capital Advisors, LLC, as Special Servicer of the ILPT Hawaii Portfolio

 35.17
National Association, as Primary Servicer of The Block Northway Mortgage Loan
(see Exhibit 35.1)

 35.18
National Association, as Special Servicer of The Block Northway Mortgage Loan
prior to May 10, 2023 (see Exhibit 35.1)

 35.19
K-Star Asset Management LLC, as Special Servicer of The Block Northway Mortgage
Loan on and after May 10, 2023 (Omitted. See Explanatory Notes.)

 99.1 Mortgage Loan Purchase Agreement, dated as of March 27,
2019, between UBS Commercial Mortgage Securitization Corp. and UBS AG (filed as
Exhibit 99.1 to the registrant's Current Report on Form 8-K filed on April 16,
2019 under Commission File No. 333-227784-03 and incorporated by reference
herein)

 99.2 Mortgage Loan Purchase Agreement, dated as of March 27,
2019, between UBS Commercial Mortgage Securitization Corp. and Rialto Mortgage
Finance, LLC (filed as Exhibit 99.2 to the registrant's Current Report on Form
8-K filed on April 16, 2019 under Commission File No. 333-227784-03 and
incorporated by reference herein)

 99.3 Mortgage Loan Purchase Agreement, dated as of March 27,
2019, among UBS Commercial Mortgage Securitization Corp., Ladder Capital
Finance LLC, Ladder Capital Finance Holdings LLLP, Series REIT of Ladder
Capital Finance Holdings LLLP and Series TRS of Ladder Capital Finance Holdings
LLLP (filed as Exhibit 99.3 to the registrant's Current Report on Form 8-K
filed on April 16, 2019 under Commission File No. 333-227784-03 and incorporated
by reference herein)

 99.4 Mortgage Loan Purchase Agreement, dated as of March 27,
2019, between UBS Commercial Mortgage Securitization Corp. and Morgan Stanley
Mortgage Capital Holdings LLC (filed as Exhibit 99.4 to the registrant's
Current Report on Form 8-K filed on April 16, 2019 under Commission File No.
333-227784-03 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.

 UBS Commercial Mortgage
Securitization Corp.

(Depositor)

 /s/
Nicholas Galeone

 Nicholas
Galeone, President

 (senior officer in charge of
securitization of the depositor)

 Date: March 13, 2024

 /s/ Andrew
Lisa

 Andrew Lisa, Director

 Date: March 13, 2024