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, 2025

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: 333-206847-08

Central Index Key Number of the issuing entity: 0001721373

BANK 2017-BNK9

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

Central Index Key Number of the depositor: 0001005007

Banc of America Merrill Lynch Commercial Mortgage Inc.

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

Central Index Key Number of the sponsor: 0001102113

Bank of America, National Association

(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)

Central Index Key Number of the sponsor: 0000740906

Wells Fargo Bank, National Association

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

New York
(State or other jurisdiction of
incorporation or organization of

the issuing entity)

38-4052594

38-4052595

(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:

(646) 855-3953

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).

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 ⌧ 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.

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 Laguna Cliffs Marriott Mortgage Loan and the Warwick Mall Mortgage Loan, which constituted approximately 8.1% and 2.8%, 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 Laguna Cliffs Marriott Mortgage Loan, one other pari passu loan, which is not an asset of the issuing entity and (b) with respect to the Warwick Mall Mortgage Loan, two other pari passu loans, which are not assets of the issuing entity. These loan combinations, including the Laguna Cliffs Marriott Mortgage Loan and the Warwick Mall 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 Exhibit Index describes exhibits provided by certain parties (in their capacities indicated on the Exhibit Index) with respect to the Colorado Center Mortgage Loan, which constituted approximately 5.7% of the asset pool of the issuing entity as of its cut-off date. The Colorado Center Mortgage Loan is an asset of the issuing entity and is part of a loan combination that includes the Colorado Center Mortgage Loan, eight other pari passu loans and three subordinate companion loans, each of which are not assets of the issuing entity. A pari passu portion of the loan combination was securitized in the BXP Trust 2017-CC transaction (the “BXP Trust 2017-CC Transaction”). This loan combination, including the Colorado Center Mortgage Loan, is being serviced and administered pursuant to the trust and servicing agreement for the BXP Trust 2017-CC 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 Park Square Mortgage Loan and the U.S. Industrial Portfolio III Mortgage Loan, which constituted approximately 5.7% and 3.8%, respectively, of the asset pool of the issuing entity as of its cut-off date. The Park Square Mortgage Loan and the U.S. Industrial Portfolio III Mortgage Loan are each an asset of the issuing entity and are each part of a loan combination that includes (a) with respect to the Park Square Mortgage Loan, one other pari passu loan, which is not an asset of the issuing entity, and (b) with respect to the U.S. Industrial Portfolio III Mortgage Loan, two other pari passu loans, which are not assets of the issuing entity. A pari passu portion of each loan combination was securitized in the BANK 2017-BNK8 transaction, Commission File Number 333-206582-12 (the “BANK 2017-BNK8 Transaction”). These loan combinations, including the Park Square Mortgage Loan and the U.S. Industrial Portfolio III Mortgage Loan, are being serviced and administered pursuant to the pooling and servicing agreement for the BANK 2017-BNK8 Transaction, which is incorporated by reference as Exhibit 4.3 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 Bass Pro & Cabela's Portfolio Mortgage Loan, which constituted approximately 2.2% of the asset pool of the issuing entity as of its cut-off date. The Bass Pro & Cabela's Portfolio Mortgage Loan is an asset of the issuing entity and is part of a loan combination that includes the Bass Pro & Cabela's Portfolio Mortgage Loan and eleven other pari passu loans, which are not assets of the issuing entity. A pari passu portion of the loan combination was securitized in the GS Mortgage Securities Trust 2017-GS8 transaction, Commission File Number 333-207677-07 (the “GSMS 2017-GS8 Transaction”). This loan combination, including the Bass Pro & Cabela's Portfolio Mortgage Loan, is being serviced and administered pursuant to the pooling and servicing agreement for the GSMS 2017-GS8 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.

Wells Fargo Bank, National Association is the certificate administrator of the mortgage loans serviced under the Pooling and Servicing Agreement, the master servicer of the mortgage loans serviced under the Pooling and Servicing Agreement prior to March 1, 2025 and the primary servicer of the Park Square Mortgage Loan, the U.S. Industrial Portfolio III Mortgage Loan, the Colorado Center Mortgage Loan and the Bass Pro & Cabela's Portfolio Mortgage Loan prior to March 1, 2025. As a result, Wells Fargo 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 Wells Fargo Bank, National Association in the capacities described above are listed in the Exhibit Index.

Trimont LLC is the master servicer of the mortgage loans serviced under the Pooling and Servicing Agreement on and after March 1, 2025 and the primary servicer of the Park Square Mortgage Loan, the U.S. Industrial Portfolio III Mortgage Loan, the Colorado Center Mortgage Loan and the Bass Pro & Cabela's Portfolio Mortgage Loan on and after March 1, 2025. As a result, Trimont LLC 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 Trimont LLC in the capacities described above are listed in the Exhibit Index.

LNR Partners, LLC is the special servicer of the Park Square Mortgage Loan and the U.S. Industrial Portfolio III Mortgage Loan. These mortgage loans constitute more than 5%, but less than 10%, of the pool assets of the issuing entity. Therefore, the Depositor included in this Annual Report on Form 10-K an assessment of compliance with applicable servicing criteria for LNR Partners, LLC and an accountants’ attestation report pursuant to Item 1122 of Regulation AB because LNR Partners, LLC is servicing more than 5% of the pool assets. However, the Depositor is not required to include in this Annual Report on Form 10-K a servicer compliance statement pursuant to Item 1123 of Regulation AB of LNR Partners, LLC because LNR Partners, LLC is an unaffiliated servicer servicing less than 10% of pool assets.

Wells Fargo Bank, National Association is the custodian of the mortgage loans serviced under the Pooling and Servicing Agreement, the Park Square Mortgage Loan, the U.S. Industrial Portfolio III Mortgage Loan, the Colorado Center Mortgage Loan and the Bass Pro & Cabela's Portfolio 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, the Park Square Mortgage Loan, the U.S. Industrial Portfolio III Mortgage Loan and the Warwick Mall 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.

Wilmington Trust, National Association acts as trustee of the mortgage loans serviced under the Pooling and Servicing Agreement, the Colorado Center Mortgage Loan, the Park Square Mortgage Loan, the U.S. Industrial Portfolio III Mortgage Loan and the Bass Pro & Cabela's Portfolio Mortgage Loan. Pursuant to the Pooling and Servicing Agreement, the trust and servicing agreement for the BXP Trust 2017-CC Transaction, the pooling and servicing agreement for the BANK 2017-BNK8 Transaction and the pooling and servicing agreement for the GSMS 2017-GS8 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 Colorado Center Mortgage Loan, the Park Square Mortgage Loan, the U.S. Industrial Portfolio III Mortgage Loan and the Bass Pro & Cabela's Portfolio 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 assessments of compliance with applicable servicing criteria and accountants’ attestation reports from CoreLogic Solutions, LLC. This entity was engaged by each master servicer under the Pooling and Servicing Agreement and each primary servicer of the Colorado Center Mortgage Loan, the Park Square Mortgage Loan, the U.S. Industrial Portfolio III Mortgage Loan and the Bass Pro & Cabela's Portfolio Mortgage Loan to remit tax payments received from the escrow accounts of borrowers to local taxing authorities, to report tax amounts due, to verify tax parcel information, and to verify non-escrow tax payments. These servicing functions are included within the servicing criteria set forth in Item 1122(d)(4)(xi) of Regulation AB. Therefore, 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 vendor is a “servicer” for the purposes of Item 1122 of Regulation AB. See Compliance and Disclosure Interpretations, Section 301.01 (Item 1101(j)).

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 Colorado Center Mortgage Loan, the Park Square Mortgage Loan, the U.S. Industrial Portfolio III Mortgage Loan and the Bass Pro & Cabela's Portfolio 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 Colorado Center Mortgage Loan, the Park Square Mortgage Loan and the Bass Pro & Cabela's Portfolio Mortgage Loan, (i) the reports on assessment of compliance with servicing criteria and attestation reports on assessment of compliance with servicing criteria of K-Star Asset Management LLC as special servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan and Pentalpha Surveillance LLC as operating advisor of the Bass Pro & Cabela's Portfolio 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 LNR Partners, LLC as special servicer of the Park Square Mortgage Loan, Argentic Services Company LP as special servicer of the Colorado Center Mortgage Loan, K-Star Asset Management LLC as special servicer of the Bass Pro & Cabela's Portfolio 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 1C. Cybersecurity.

Omitted.

Item 2. Properties.

Omitted.

Item 3. Legal Proceedings.

Omitted.

Item 4. Mine Safety Disclosures.

Not applicable.

PART II

Omitted.

Item 6. [Reserved].

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.

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.

Omitted.

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

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.

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.

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 December 20, 2017 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 Colorado Center Mortgage Loan, which is being serviced and administered pursuant to the trust and servicing agreement for the BXP Trust 2017-CC 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 BXP Trust 2017-CC 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 BXP Trust 2017-CC 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 Park Square Mortgage Loan and the U.S. Industrial Portfolio III Mortgage Loan, which are being serviced and administered pursuant to the pooling and servicing agreement for the BANK 2017-BNK8 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 BANK 2017-BNK8 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 BANK 2017-BNK8 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 Bass Pro & Cabela's Portfolio Mortgage Loan, which is being serviced and administered pursuant to the pooling and servicing agreement for the GSMS 2017-GS8 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 GSMS 2017-GS8 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 GSMS 2017-GS8 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.

PART IV

Item 15. Exhibits 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 December 1, 2017, by and among Banc of America Merrill Lynch Commercial Mortgage Inc., as Depositor, Wells Fargo Bank, National Association, as Master Servicer, Rialto Capital Advisors, LLC, as Special Servicer, Wells Fargo Bank, National Association, as Certificate Administrator, Wilmington Trust, National Association, as Trustee, and Park Bridge Lender Services LLC, as Operating Advisor and as Asset Representations Reviewer (filed as Exhibit 4.1 to the registrant’s Current Report on Form 8-K/A filed on February 6, 2018 under Commission File No. 333-206847-08 and incorporated by reference herein).

4.2 Trust and Servicing Agreement, dated as of August 9, 2017, by and among Morgan Stanley Capital I Inc., as Depositor, Wells Fargo Bank, National Association, as Master Servicer, AEGON USA Realty Advisors, LLC, as Special Servicer, Wilmington Trust, National Association, as Trustee and Wells Fargo Bank, National Association, as Certificate Administrator and Custodian (filed as Exhibit 4.3 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 and incorporated by reference herein).

4.3 Pooling and Servicing Agreement, dated as of November 1, 2017, by and among Morgan Stanley Capital I Inc., as Depositor, Wells Fargo Bank, National Association, as General Master Servicer, Midland Loan Services, a Division of PNC Bank, National Association, as General Special Servicer, National Cooperative Bank, N.A., as NCB Master Servicer and as NCB Special Servicer, Wells Fargo Bank, National Association, as Certificate Administrator, Wilmington Trust, National Association, as Trustee, and Park Bridge Lender Services LLC, as Operating Advisor and as Asset Representations Reviewer (filed as Exhibit 4.2 to the registrant’s Current Report on Form 8-K/A filed on February 6, 2018 under Commission File No. 333-206847-08 and incorporated by reference herein).

4.4 Pooling and Servicing Agreement, dated as of November 1, 2017, by and among GS Mortgage Securities Corporation II, as Depositor, Wells Fargo 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, Wilmington Trust, National Association, 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 December 20, 2017 under Commission File No. 333-206847-08 and incorporated by reference herein).

4.5 Agreement Between Note Holders, dated as of November 17, 2017, by and between Wells Fargo Bank, National Association, as initial note A-1 holder and Wells Fargo Bank, National Association, as initial note A-2 holder (filed as Exhibit 4.6 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 and incorporated by reference herein).

4.6 Agreement Between Note Holders, dated as of August 9, 2017, by and between Morgan Stanley Bank, N.A., as initial note A-1 holder and as initial note B-1 holder, Deutsche Bank AG, acting through its New York Branch, as initial note A-2 holder and as initial note B-2 holder, and Wells Fargo Bank, National Association, as initial note A-3 holder and as initial note B-3 holder (filed as Exhibit 4.7 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 and incorporated by reference herein).

4.7 Agreement Between Note Holders, dated as of October 13, 2017, by and between Bank of America, N.A., as initial note A-1 holder and Bank of America, N.A., as initial note A-2 holder (filed as Exhibit 4.8 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 and incorporated by reference herein).

4.8 Agreement Between Note Holders, dated as of September 14, 2017, by and between Bank of America, N.A., as initial note A-1 holder, Bank of America, N.A., as initial note A-2 holder and Bank of America, N.A., as initial note A-3 holder (filed as Exhibit 4.10 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 and incorporated by reference herein).

4.9 Co-Lender Agreement, dated as of November 16, 2017, by and among Goldman Sachs Mortgage Company, as initial note A-1(A-CP) holder, as initial note A-1(A-NCP) holder and as initial note A-1(B-CP) holder, Wells Fargo Bank, National Association, as initial note A-2 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(A-CP) holder, as initial note A-3(B-CP) holder, as initial note A-3(C-CP) holder, as initial note A-3(D-NCP) holder, as initial note A-3(E-NCP) holder, and as initial note A-3(F-NCP) holder (filed as Exhibit 4.11 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 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 Wells Fargo Bank, National Association, as Master Servicer prior to March 1, 2025

33.2 Trimont LLC, as Master Servicer on and after March 1, 2025

33.3 Rialto Capital Advisors, LLC, as Special Servicer

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

33.5 Wells Fargo Bank, National Association, as Certificate Administrator

33.6 Wells Fargo Bank, National Association, as Custodian

33.7 Park Bridge Lender Services LLC, as Operating Advisor

33.8 CoreLogic Solutions, LLC, as Servicing Function Participant

33.9 Computershare Trust Company, National Association, as Servicing Function Participant for the Certificate Administrator

33.10 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian

33.11 Wells Fargo Bank, National Association, as Primary Servicer of the Laguna Cliffs Marriott Mortgage Loan prior to March 1, 2025 (see Exhibit 33.1)

33.12 Trimont LLC, as Primary Servicer of the Laguna Cliffs Marriott Mortgage Loan on and after March 1, 2025 (see Exhibit 33.2)

33.13 Rialto Capital Advisors, LLC, as Special Servicer of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 33.3)

33.14 Wilmington Trust, National Association, as Trustee of the Laguna Cliffs Marriott Mortgage Loan (Omitted. See Explanatory Notes.)

33.15 Wells Fargo Bank, National Association, as Custodian of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 33.6)

33.16 Park Bridge Lender Services LLC, as Operating Advisor of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 33.7)

33.17 CoreLogic Solutions, LLC, as Servicing Function Participant of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 33.8)

33.18 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 33.10)

33.19 Wells Fargo Bank, National Association, as Primary Servicer of the Warwick Mall Mortgage Loan prior to March 1, 2025 (see Exhibit 33.1)

33.20 Trimont LLC, as Primary Servicer of the Warwick Mall Mortgage Loan on and after March 1, 2025 (see Exhibit 33.2)

33.21 Rialto Capital Advisors, LLC, as Special Servicer of the Warwick Mall Mortgage Loan (see Exhibit 33.3)

33.22 Wilmington Trust, National Association, as Trustee of the Warwick Mall Mortgage Loan (Omitted. See Explanatory Notes.)

33.23 Wells Fargo Bank, National Association, as Custodian of the Warwick Mall Mortgage Loan (see Exhibit 33.6)

33.24 Park Bridge Lender Services LLC, as Operating Advisor of the Warwick Mall Mortgage Loan (see Exhibit 33.7)

33.25 CoreLogic Solutions, LLC, as Servicing Function Participant of the Warwick Mall Mortgage Loan (see Exhibit 33.8)

33.26 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 33.10)

33.27 Wells Fargo Bank, National Association, as Primary Servicer of the Colorado Center Mortgage Loan prior to March 1, 2025 (see Exhibit 33.1)

33.28 Trimont LLC, as Primary Servicer of the Colorado Center Mortgage Loan on and after March 1, 2025 (see Exhibit 33.2)

33.29 Argentic Services Company LP, as Special Servicer of the Colorado Center Mortgage Loan

33.30 Wilmington Trust, National Association, as Trustee of the Colorado Center Mortgage Loan (Omitted. See Explanatory Notes.)

33.31 Wells Fargo Bank, National Association, as Custodian of the Colorado Center Mortgage Loan (see Exhibit 33.6)

33.32 CoreLogic Solutions, LLC, as Servicing Function Participant of the Colorado Center Mortgage Loan (see Exhibit 33.8)

33.33 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 33.10)

33.34 Wells Fargo Bank, National Association, as Primary Servicer of the Park Square Mortgage Loan prior to March 1, 2025 (see Exhibit 33.1)

33.35 Trimont LLC, as Primary Servicer of the Park Square Mortgage Loan on and after March 1, 2025 (see Exhibit 33.2)

33.36 LNR Partners, LLC, as Special Servicer of the Park Square Mortgage Loan

33.37 Wilmington Trust, National Association, as Trustee of the Park Square Mortgage Loan (Omitted. See Explanatory Notes.)

33.38 Wells Fargo Bank, National Association, as Custodian of the Park Square Mortgage Loan (see Exhibit 33.6)

33.39 Park Bridge Lender Services LLC, as Operating Advisor of the Park Square Mortgage Loan (see Exhibit 33.7)

33.40 CoreLogic Solutions, LLC, as Servicing Function Participant of the Park Square Mortgage Loan (see Exhibit 33.8)

33.41 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 33.10)

33.42 Wells Fargo Bank, National Association, as Primary Servicer of the U.S. Industrial Portfolio III Mortgage Loan prior to March 1, 2025 (see Exhibit 33.1)

33.43 Trimont LLC, as Primary Servicer of the U.S. Industrial Portfolio III Mortgage Loan on and after March 1, 2025 (see Exhibit 33.2)

33.44 LNR Partners, LLC, as Special Servicer of the U.S. Industrial Portfolio III Mortgage Loan (see Exhibit 33.36)

33.45 Wilmington Trust, National Association, as Trustee of the U.S. Industrial Portfolio III Mortgage Loan (Omitted. See Explanatory Notes.)

33.46 Wells Fargo Bank, National Association, as Custodian of the U.S. Industrial Portfolio III Mortgage Loan (see Exhibit 33.6)

33.47 Park Bridge Lender Services LLC, as Operating Advisor of the U.S. Industrial Portfolio III Mortgage Loan (see Exhibit 33.7)

33.48 CoreLogic Solutions, LLC, as Servicing Function Participant of the U.S. Industrial Portfolio III Mortgage Loan (see Exhibit 33.8)

33.49 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 33.10)

33.50 Wells Fargo Bank, National Association, as Primary Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan prior to March 1, 2025 (see Exhibit 33.1)

33.51 Trimont LLC, as Primary Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan on and after March 1, 2025 (see Exhibit 33.2)

33.52 K-Star Asset Management LLC, as Special Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.53 Wilmington Trust, National Association, as Trustee of the Bass Pro & Cabela's Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.54 Wells Fargo Bank, National Association, as Custodian of the Bass Pro & Cabela's Portfolio Mortgage Loan (see Exhibit 33.6)

33.55 Pentalpha Surveillance LLC, as Operating Advisor of the Bass Pro & Cabela's Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.56 CoreLogic Solutions, LLC, as Servicing Function Participant of the Bass Pro & Cabela's Portfolio Mortgage Loan (see Exhibit 33.8)

33.57 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 33.10)

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

34.1 Wells Fargo Bank, National Association, as Master Servicer prior to March 1, 2025

34.2 Trimont LLC, as Master Servicer on and after March 1, 2025

34.3 Rialto Capital Advisors, LLC, as Special Servicer

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

34.5 Wells Fargo Bank, National Association, as Certificate Administrator

34.6 Wells Fargo Bank, National Association, as Custodian

34.7 Park Bridge Lender Services LLC, as Operating Advisor

34.8 CoreLogic Solutions, LLC, as Servicing Function Participant

34.9 Computershare Trust Company, National Association, as Servicing Function Participant for the Certificate Administrator

34.10 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian

34.11 Wells Fargo Bank, National Association, as Primary Servicer of the Laguna Cliffs Marriott Mortgage Loan prior to March 1, 2025 (see Exhibit 34.1)

34.12 Trimont LLC, as Primary Servicer of the Laguna Cliffs Marriott Mortgage Loan on and after March 1, 2025 (see Exhibit 34.2)

34.13 Rialto Capital Advisors, LLC, as Special Servicer of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 34.3)

34.14 Wilmington Trust, National Association, as Trustee of the Laguna Cliffs Marriott Mortgage Loan (Omitted. See Explanatory Notes.)

34.15 Wells Fargo Bank, National Association, as Custodian of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 34.6)

34.16 Park Bridge Lender Services LLC, as Operating Advisor of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 34.7)

34.17 CoreLogic Solutions, LLC, as Servicing Function Participant of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 34.8)

34.18 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 34.10)

34.19 Wells Fargo Bank, National Association, as Primary Servicer of the Warwick Mall Mortgage Loan prior to March 1, 2025 (see Exhibit 34.1)

34.20 Trimont LLC, as Primary Servicer of the Warwick Mall Mortgage Loan on and after March 1, 2025 (see Exhibit 34.2)

34.21 Rialto Capital Advisors, LLC, as Special Servicer of the Warwick Mall Mortgage Loan (see Exhibit 34.3)

34.22 Wilmington Trust, National Association, as Trustee of the Warwick Mall Mortgage Loan (Omitted. See Explanatory Notes.)

34.23 Wells Fargo Bank, National Association, as Custodian of the Warwick Mall Mortgage Loan (see Exhibit 34.6)

34.24 Park Bridge Lender Services LLC, as Operating Advisor of the Warwick Mall Mortgage Loan (see Exhibit 34.7)

34.25 CoreLogic Solutions, LLC, as Servicing Function Participant of the Warwick Mall Mortgage Loan (see Exhibit 34.8)

34.26 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 34.10)

34.27 Wells Fargo Bank, National Association, as Primary Servicer of the Colorado Center Mortgage Loan prior to March 1, 2025 (see Exhibit 34.1)

34.28 Trimont LLC, as Primary Servicer of the Colorado Center Mortgage Loan on and after March 1, 2025 (see Exhibit 34.2)

34.29 Argentic Services Company LP, as Special Servicer of the Colorado Center Mortgage Loan

34.30 Wilmington Trust, National Association, as Trustee of the Colorado Center Mortgage Loan (Omitted. See Explanatory Notes.)

34.31 Wells Fargo Bank, National Association, as Custodian of the Colorado Center Mortgage Loan (see Exhibit 34.6)

34.32 CoreLogic Solutions, LLC, as Servicing Function Participant of the Colorado Center Mortgage Loan (see Exhibit 34.8)

34.33 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 34.10)

34.34 Wells Fargo Bank, National Association, as Primary Servicer of the Park Square Mortgage Loan prior to March 1, 2025 (see Exhibit 34.1)

34.35 Trimont LLC, as Primary Servicer of the Park Square Mortgage Loan on and after March 1, 2025 (see Exhibit 34.2)

34.36 LNR Partners, LLC, as Special Servicer of the Park Square Mortgage Loan

34.37 Wilmington Trust, National Association, as Trustee of the Park Square Mortgage Loan (Omitted. See Explanatory Notes.)

34.38 Wells Fargo Bank, National Association, as Custodian of the Park Square Mortgage Loan (see Exhibit 34.6)

34.39 Park Bridge Lender Services LLC, as Operating Advisor of the Park Square Mortgage Loan (see Exhibit 34.7)

34.40 CoreLogic Solutions, LLC, as Servicing Function Participant of the Park Square Mortgage Loan (see Exhibit 34.8)

34.41 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 34.10)

34.42 Wells Fargo Bank, National Association, as Primary Servicer of the U.S. Industrial Portfolio III Mortgage Loan prior to March 1, 2025 (see Exhibit 34.1)

34.43 Trimont LLC, as Primary Servicer of the U.S. Industrial Portfolio III Mortgage Loan on and after March 1, 2025 (see Exhibit 34.2)

34.44 LNR Partners, LLC, as Special Servicer of the U.S. Industrial Portfolio III Mortgage Loan (see Exhibit 34.36)

34.45 Wilmington Trust, National Association, as Trustee of the U.S. Industrial Portfolio III Mortgage Loan (Omitted. See Explanatory Notes.)

34.46 Wells Fargo Bank, National Association, as Custodian of the U.S. Industrial Portfolio III Mortgage Loan (see Exhibit 34.6)

34.47 Park Bridge Lender Services LLC, as Operating Advisor of the U.S. Industrial Portfolio III Mortgage Loan (see Exhibit 34.7)

34.48 CoreLogic Solutions, LLC, as Servicing Function Participant of the U.S. Industrial Portfolio III Mortgage Loan (see Exhibit 34.8)

34.49 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 34.10)

34.50 Wells Fargo Bank, National Association, as Primary Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan prior to March 1, 2025 (see Exhibit 34.1)

34.51 Trimont LLC, as Primary Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan on and after March 1, 2025 (see Exhibit 34.2)

34.52 K-Star Asset Management LLC, as Special Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.53 Wilmington Trust, National Association, as Trustee of the Bass Pro & Cabela's Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.54 Wells Fargo Bank, National Association, as Custodian of the Bass Pro & Cabela's Portfolio Mortgage Loan (see Exhibit 34.6)

34.55 Pentalpha Surveillance LLC, as Operating Advisor of the Bass Pro & Cabela's Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.56 CoreLogic Solutions, LLC, as Servicing Function Participant of the Bass Pro & Cabela's Portfolio Mortgage Loan (see Exhibit 34.8)

34.57 Computershare Trust Company, National Association, as Servicing Function Participant for the Custodian (see Exhibit 34.10)

35 Servicer compliance statements.

35.1 Wells Fargo Bank, National Association, as Master Servicer prior to March 1, 2025

35.2 Trimont LLC, as Master Servicer on and after March 1, 2025

35.3 Rialto Capital Advisors, LLC, as Special Servicer

35.4 Wells Fargo Bank, National Association, as Certificate Administrator

35.5 Computershare Trust Company, National Association, as Servicing Function Participant for the Certificate Administrator

35.6 Wells Fargo Bank, National Association, as Primary Servicer of the Laguna Cliffs Marriott Mortgage Loan prior to March 1, 2025 (see Exhibit 35.1)

35.7 Trimont LLC, as Primary Servicer of the Laguna Cliffs Marriott Mortgage Loan on and after March 1, 2025 (see Exhibit 35.2)

35.8 Rialto Capital Advisors, LLC, as Special Servicer of the Laguna Cliffs Marriott Mortgage Loan (see Exhibit 35.3)

35.9 Wells Fargo Bank, National Association, as Primary Servicer of the Warwick Mall Mortgage Loan prior to March 1, 2025 (see Exhibit 35.1)

35.10 Trimont LLC, as Primary Servicer of the Warwick Mall Mortgage Loan on and after March 1, 2025 (see Exhibit 35.2)

35.11 Rialto Capital Advisors, LLC, as Special Servicer of the Warwick Mall Mortgage Loan (see Exhibit 35.3)

35.12 Wells Fargo Bank, National Association, as Primary Servicer of the Colorado Center Mortgage Loan prior to March 1, 2025 (see Exhibit 35.1)

35.13 Trimont LLC, as Primary Servicer of the Colorado Center Mortgage Loan on and after March 1, 2025 (see Exhibit 35.2)

35.14 Argentic Services Company LP, as Special Servicer of the Colorado Center Mortgage Loan (Omitted. See Explanatory Notes.)

35.15 Wells Fargo Bank, National Association, as Primary Servicer of the Park Square Mortgage Loan prior to March 1, 2025 (see Exhibit 35.1)

35.16 Trimont LLC, as Primary Servicer of the Park Square Mortgage Loan on and after March 1, 2025 (see Exhibit 35.2)

35.17 LNR Partners, LLC, as Special Servicer of the Park Square Mortgage Loan (Omitted. See Explanatory Notes.)

35.18 Wells Fargo Bank, National Association, as Primary Servicer of the U.S. Industrial Portfolio III Mortgage Loan prior to March 1, 2025 (see Exhibit 35.1)

35.19 Trimont LLC, as Primary Servicer of the U.S. Industrial Portfolio III Mortgage Loan on and after March 1, 2025 (see Exhibit 35.2)

35.20 LNR Partners, LLC, as Special Servicer of the U.S. Industrial Portfolio III Mortgage Loan (Omitted. See Explanatory Notes.)

35.21 Wells Fargo Bank, National Association, as Primary Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan prior to March 1, 2025 (see Exhibit 35.1)

35.22 Trimont LLC, as Primary Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan on and after March 1, 2025 (see Exhibit 35.2)

35.23 K-Star Asset Management LLC, as Special Servicer of the Bass Pro & Cabela's Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

99.1 Mortgage Loan Purchase Agreement, dated as of December 5, 2017, between Bank of America, National Association, as seller, and Banc of America Merrill Lynch Commercial Mortgage Inc., as purchaser (filed as Exhibit 99.1 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 and incorporated by reference herein)

99.2 Mortgage Loan Purchase Agreement, dated as of December 5, 2017, between Morgan Stanley Mortgage Capital Holdings LLC, as seller, and Banc of America Merrill Lynch Commercial Mortgage Inc., as purchaser (filed as Exhibit 99.2 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 and incorporated by reference herein)

99.3 Mortgage Loan Purchase Agreement, dated as of December 5, 2017, between Wells Fargo Bank, National Association, as seller, and Banc of America Merrill Lynch Commercial Mortgage Inc., as purchaser (filed as Exhibit 99.3 to the registrant’s Current Report on Form 8-K filed on December 20, 2017 under Commission File No. 333-206847-08 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.

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.

Banc of America Merrill Lynch Commercial Mortgage Inc.
(Depositor)

/s/ Leland F. Bunch, III

Leland F. Bunch, III, President and Chief Executive Officer

(senior officer in charge of securitization of the depositor)

Date: March 16, 2026

BANK 2017-BNK9 10-K