MSBAM 2015-C21 Trust Details Servicing Shifts, Legal Resolutions

TL;DR

**This CMBS trust is a compliance-focused entity, not a growth story; its operational stability and legal clarity are the only game in town.**

AI Summary

The Morgan Stanley Bank of America Merrill Lynch Trust 2015-C21 10-K filing for the fiscal year ended December 31, 2025, primarily details compliance with servicing criteria for its asset-backed securities, rather than traditional financial performance metrics like revenue or net income. Key operational changes include the engagement of Computershare Trust Company, National Association, effective November 1, 2021, to perform all or virtually all of Wells Fargo Bank, National Association's roles as certificate administrator, custodian, and trustee. Additionally, Mount Street US (Georgia) LLP replaced LNR Partners, LLC and CWCapital Asset Management LLC as general special servicer on August 16, 2021, though LNR Partners, LLC retains special servicer duties for the 555 11th Street NW mortgage loan. The filing also notes the resolution of several legal proceedings against Wells Fargo Bank, N.A., acting as trustee for various RMBS trusts, including the dismissal of Phoenix Light SF Limited's appeal in May 2023 and the denial of Commerzbank AG's appeal in October 2024. No material legal proceedings are pending against the trust's sponsors, depositor, or servicer. The trust is classified as a non-accelerated filer and has no registered securities under Section 12(b) or 12(g) of the Exchange Act.

Why It Matters

This 10-K provides critical transparency into the operational health and compliance of a significant Commercial Mortgage-Backed Securities (CMBS) trust. For investors, understanding the roles and responsibilities of servicers like Mount Street US (Georgia) LLP and KeyBank National Association, and the resolution of legal challenges against Wells Fargo Bank, N.A., is vital for assessing the stability and oversight of their investments. The detailed compliance reports ensure that the trust adheres to regulatory standards, which can impact the perceived risk and liquidity of the underlying securities. The competitive landscape for CMBS trusts relies heavily on robust servicing and legal clarity, making these operational details paramount for market confidence.

Risk Assessment

Risk Level: low — The risk level is low because the filing primarily focuses on compliance and operational servicing, with no indication of financial distress or significant legal liabilities for the trust itself. The legal proceedings mentioned against Wells Fargo Bank, N.A. were largely resolved in favor of Wells Fargo, with Phoenix Light's appeal dismissed in May 2023 and Commerzbank AG's appeal denied in October 2024, mitigating potential trustee-related risks.

Analyst Insight

Investors should view this filing as a confirmation of operational stability and compliance for the MSBAM 2015-C21 trust. Given the lack of traditional financial reporting, focus on the ongoing performance of the underlying mortgage pool and the effectiveness of the servicing entities, particularly Mount Street US (Georgia) LLP, for future insights.

Financial Highlights

debt To Equity

0.0

revenue

$0

operating Margin

0%

total Assets

$0

total Debt

$0

net Income

$0

eps

$0

gross Margin

0%

cash Position

$0

revenue Growth

0%

Key Numbers

• 2025-12-31 — Fiscal Year End (The period covered by this 10-K filing.)
• 2026-03-24 — Filing Date (Date the 10-K was filed with the SEC.)
• 2021-11-01 — Computershare Engagement Date (Date Computershare Trust Company, National Association assumed key roles from Wells Fargo Bank, N.A.)
• 2021-08-16 — Mount Street US (Georgia) LLP Appointment Date (Date Mount Street US (Georgia) LLP became the general special servicer.)
• 2023-05 — Phoenix Light Appeal Dismissal (Month and year Phoenix Light SF Limited dismissed its appeal against Wells Fargo Bank, N.A.)
• 2024-10 — Commerzbank AG Appeal Denial (Month and year the Second Circuit denied Commerzbank AG's appeal against Wells Fargo Bank, N.A.)

Key Players & Entities

• Morgan Stanley Bank of America Merrill Lynch Trust 2015-C21 (company) — issuing entity
• Morgan Stanley Capital I Inc. (company) — depositor
• Wells Fargo Bank, National Association (company) — former trustee, custodian, certificate administrator; defendant in legal proceedings
• Computershare Trust Company, National Association (company) — current certificate administrator, custodian, and trustee agent since November 1, 2021
• Mount Street US (Georgia) LLP (company) — current special servicer since August 16, 2021
• LNR Partners, LLC (company) — former general special servicer; current special servicer for 555 11th Street NW mortgage loan
• KeyBank National Association (company) — master servicer
• Phoenix Light SF Limited (company) — plaintiff in legal proceedings against Wells Fargo Bank, N.A.
• Commerzbank AG (company) — plaintiff in legal proceedings against Wells Fargo Bank, N.A.
• Jane Lam (person) — President of Morgan Stanley Capital I Inc.

FAQ

Industry Context

The asset-backed securities (ABS) market, particularly for commercial mortgage-backed securities (CMBS) like those underlying this trust, is heavily influenced by regulatory compliance and operational efficiency. Key trends include the ongoing consolidation of servicing functions and the resolution of legacy legal issues stemming from past market downturns. Investor focus remains on transparency and the reliability of servicing operations to ensure timely distributions and asset management.

Regulatory Implications

The trust's primary regulatory focus is on compliance with Regulation AB's servicing criteria (Item 1122 and 1123). Changes in servicers and trustees necessitate rigorous adherence to these standards to maintain investor confidence and avoid potential SEC scrutiny. The resolution of legal proceedings against former trustees also highlights the importance of robust legal defense and risk management in the securitization industry.

What Investors Should Do

1. Monitor the performance and compliance of Computershare Trust Company, National Association as the new certificate administrator, custodian, and trustee to ensure smooth operational transitions and adherence to servicing criteria.
2. Assess the impact of Mount Street US (Georgia) LLP's special servicing on the resolution of distressed assets, paying attention to recovery rates and workout strategies for any non-performing loans within the trust.
3. Review the legal proceedings' outcomes involving Wells Fargo Bank, N.A. to understand any residual implications for the trust's historical operations or potential future liabilities, although current filings suggest no material pending actions.
4. Confirm the trust's continued status as a non-accelerated filer and understand the implications for disclosure requirements and investor access to information.

Key Dates

• 2021-11-01: Computershare Trust Company, National Association assumed roles of certificate administrator, custodian, and trustee. — This marks a significant operational change, shifting critical administrative functions from Wells Fargo Bank, N.A. to a new provider, impacting the trust's operational continuity and compliance oversight.
• 2021-08-16: Mount Street US (Georgia) LLP appointed as general special servicer. — This change in special servicing indicates a shift in how distressed assets are managed, potentially affecting recovery rates and workout strategies for non-performing loans.
• 2023-05: Phoenix Light SF Limited's appeal against Wells Fargo Bank, N.A. was dismissed. — This dismissal represents a resolution of a legal challenge, reducing potential litigation risk and associated costs for entities involved with the trust.
• 2024-10: Second Circuit denied Commerzbank AG's appeal against Wells Fargo Bank, N.A. — This denial further solidifies the resolution of legal disputes, removing ongoing uncertainty and potential financial liabilities related to past trustee actions.

Glossary

Servicing Criteria

A set of standards and requirements that servicers of asset-backed securities must adhere to, as outlined in Regulation AB, to ensure proper administration of the underlying assets. (The 10-K filing primarily focuses on the trust's compliance with these criteria, which is crucial for investor confidence and the proper functioning of the securitization.)

Asset-Backed Securities (ABS)

Securities whose value and income payments are derived from and collateralized by a specified pool of underlying assets. (This filing pertains to a specific ABS trust, detailing operational aspects rather than the performance of the underlying assets themselves.)

Certificate Administrator

The entity responsible for administering the trust, including calculating distributions to certificate holders, preparing reports, and maintaining records. (The change in certificate administrator to Computershare is a key operational event detailed in the filing.)

Trustee

A fiduciary responsible for holding and managing assets on behalf of beneficiaries (in this case, certificate holders), ensuring the terms of the trust agreement are met. (The trustee role, previously held by Wells Fargo, has also transitioned to Computershare, highlighting a significant change in oversight.)

Special Servicer

An entity responsible for managing defaulted or specially serviced mortgage loans within a securitization trust, often involving loan modifications, foreclosure, or other workout strategies. (The appointment of Mount Street US (Georgia) LLP as the general special servicer is a key operational update.)

Regulation AB

A U.S. Securities and Exchange Commission (SEC) regulation that governs the disclosure and reporting requirements for asset-backed securities. (Compliance with Regulation AB, particularly Item 1122 and 1123 concerning servicing criteria, is the central theme of this 10-K filing.)

Non-accelerated Filer

A type of filer with the SEC that meets certain criteria, allowing for less stringent reporting and disclosure requirements compared to larger accelerated filers. (This classification indicates the trust's size and reporting obligations are relatively limited.)

Year-Over-Year Comparison

This filing focuses on operational compliance rather than traditional financial performance metrics, making a direct year-over-year comparison of revenue or net income not applicable. The key changes from the previous period involve significant shifts in servicing and trustee roles, with Computershare Trust Company, National Association and Mount Street US (Georgia) LLP taking over responsibilities previously held by Wells Fargo Bank, N.A. and LNR Partners/CWCapital Asset Management LLC, respectively. Additionally, the resolution of legal proceedings against Wells Fargo indicates a reduction in past litigation risks.

Filing Documents

• msc15c21_10k-2025.htm (10-K) — 89KB
• msc15c21_31.htm (EX-31) — 12KB
• msc15c21_33-1.htm (EX-33.1) — 357KB
• msc15c21_33-2.htm (EX-33.2) — 1420KB
• msc15c21_33-3.htm (EX-33.3) — 702KB
• msc15c21_33-4.htm (EX-33.4) — 3113KB
• msc15c21_33-5.htm (EX-33.5) — 2773KB
• msc15c21_33-6.htm (EX-33.6) — 180KB
• msc15c21_33-7.htm (EX-33.7) — 97KB
• msc15c21_33-8.htm (EX-33.8) — 92KB
• msc15c21_33-9.htm (EX-33.9) — 664KB
• msc15c21_33-10.htm (EX-33.10) — 177KB
• msc15c21_34-1.htm (EX-34.1) — 14KB
• msc15c21_34-2.htm (EX-34.2) — 11KB
• msc15c21_34-3.htm (EX-34.3) — 14KB
• msc15c21_34-4.htm (EX-34.4) — 11KB
• msc15c21_34-5.htm (EX-34.5) — 10KB
• msc15c21_34-6.htm (EX-34.6) — 10KB
• msc15c21_34-7.htm (EX-34.7) — 8KB
• msc15c21_34-8.htm (EX-34.8) — 10KB
• msc15c21_34-9.htm (EX-34.9) — 9KB
• msc15c21_34-10.htm (EX-34.10) — 9KB
• msc15c21_35-1.htm (EX-35.1) — 1896KB
• msc15c21_35-2.htm (EX-35.2) — 2593KB
• msc15c21_35-3.htm (EX-35.3) — 1558KB
• msc15c21_35-4.htm (EX-35.4) — 1806KB
• msc15c21_35-5.htm (EX-35.5) — 1086KB
• msc15c21_35-6.htm (EX-35.6) — 6KB
• msc15c21_35-7.htm (EX-35.7) — 10KB
• msc15c21_35-8.htm (EX-35.8) — 191KB
• 0001888524-26-005151.txt ( ) — 18927KB

financial statements

financial statements. Not applicable. 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). Not applicable. Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ___ No X non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter. Not applicable. Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Section 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court. Not applicable. Indicate the number of shares outstanding of each of the registrant's classes of common stock, as of the latest practicable date. Not applicable. DOCUMENTS INCORPORATED BY REFERENCE List hereunder the following documents if incorporated by reference and the Part of the Form 10-K (e.g., Part I, Part II, etc.) into which the document is incorporated: (1)Any annual report to security holders; (2) Any proxy or information statement; and (3)Any prospectus filed pursuant to Rule 424(b) or (c) under the Securities Act of 1933. The listed documents should be clearly described for identification purposes (e.g., annual report to security holders for fiscal year ended December 24, 1980). Not applicable. EXPLANATORY NOTES Except as set forth below, each of the parties to each pooling and servicing agreement listed in the Exhibit Index both (1) participates in the servicing function for purposes of Item 1122 of Regulation AB

Financial Statements and

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

Controls and Procedures. Omitted. Item 9B. Other Information. None. Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections. None. PART III Item 10. Directors, Executive Officers and Corporate Governance. Omitted. Item 11.

Executive Compensation

Executive Compensation. Omitted. Item 12.

Security Ownership of Certain

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 Accountant Fees and Services. Omitted. ADDITIONAL DISCLOSURE ITEMS FOR REGULATION AB Item 1112(b) of Regulation AB, Significant Obligor Financial Information. Not applicable. Item 1114(b)(2) of Regulation AB, Significant Enhancement Provider Financial Information. No entity or group of affiliated entities provides any enhancement or other support for the certificates as described under Item 1114 (a) of Regulation AB. Item 1115(b) of Regulation AB, Certain Derivatives Instruments (Financial Information). No entity or group of affiliated entities provides any derivative instruments for the certificates as described under Item 1115 of Regulation AB. Item 1117 of Regulation AB, Legal Proceedings. The registrant knows of no legal proceeding pending against the sponsors, depositor, trustee, issuing entity, servicer contemplated by Item 1108(a)(3) of Regulation AB, originator contemplated by Item 1110(b) of Regulation AB, or other party contemplated by Item 1100(d)(1) of Regulation AB, or of which any property of the foregoing is the subject, that is material to security holders, other than as follows: 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 W

SIGNATURES

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. Morgan Stanley Capital I Inc. (Depositor) By: /s/ Jane Lam Jane Lam, President (senior officer in charge of securitization of the depositor) Date: March 24, 2026

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View this 10-K filing on SEC EDGAR