UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549

SECURITIESFORM AND EXCHANGE COMMISSION8-K

Washington,CURRENT D.C.REPORT 20549Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

~~FORM~~ July 8-K, 2026 Date of Report (Date of Earliest Event Reported)

~~CURRENT~~Central ~~REPORT Pursuant~~Index toKey ~~Section~~Number 13of orthe issuing ~~15(d)~~entity: 0002089470 of Benchmark ~~the~~2025-V18 ~~Securities~~Mortgage ~~Exchange~~Trust (Exact ~~Act~~name of ~~1934~~issuing entity)

~~Date~~Central Index Key Number of ~~Report~~the registrant: 0001004158 GS Mortgage Securities Corporation II (~~Date~~Exact name of ~~earliest~~registrant ~~event~~as ~~reported~~specified in its charter) ~~December 23,~~ ~~2025~~

~~Benchmark~~Central ~~2025-V18~~Index Key Number of the sponsor: 0001541502 Goldman Sachs Mortgage ~~Trust~~Company (Exact name of sponsor as specified in its charter)

(Central Index Key Number ~~0002089470)~~of the sponsor: 0001541294 German American Capital Corporation (Exact name of ~~issuing~~sponsor ~~entity~~as specified in its charter)

GSCentral ~~Mortgage~~Index ~~Securities~~Key ~~Corporation~~Number IIof the sponsor: 0001701238 Citi Real Estate Funding Inc. (Exact name of sponsor as specified in its charter)

(Central Index Key Number ~~0001004158~~of the sponsor: 0000927971 Bank of Montreal (Exact name of sponsor as specified in its charter)

Central Index Key Number of the sponsor: 0001549574 Barclays Capital Real Estate Inc. (Exact name of ~~the~~sponsor ~~depositor~~ as specified in its charter)

Goldman Sachs Mortgage Company

New York		333-286173-02		38-4369420 38-4369421
(State or other jurisdiction of incorporation of issuing entity)		(Commission File Number of issuing entity)		(I.R.S. Employer Identification Numbers)

c/o Computershare Trust Company, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (~~Central~~Address ~~Index~~of ~~Key~~principal ~~Number~~executive ~~0001541502~~offices of the issuing entity) (Zip Code)

~~German~~(212) 902-1000 Registrant's ~~American~~Telephone ~~Capital~~number, ~~Corporation~~including area code

~~(Central~~Former ~~Index~~name ~~Key~~or ~~Number~~former ~~0001541294)~~address, if changed since last report: Not Applicable

~~Citi~~Check ~~Real~~the ~~Estate~~appropriate ~~Funding~~box ~~Inc.~~below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

~~(Central~~☐ Written communications ~~Index~~pursuant ~~Key~~to ~~Number~~Rule ~~0001701238~~425 under the Securities Act (17 CFR 230.425)

~~Bank~~☐ Soliciting material ofpursuant ~~Montreal~~to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(~~Central~~b) ~~Index~~under ~~Key~~the ~~Number~~Exchange ~~0000927971~~Act(17 CFR 240.14d-2(b))

~~Barclays~~☐ Pre-commencement communications ~~Capital~~pursuant ~~Real~~to ~~Estate~~Rule ~~Inc.~~13e-4(c) under the Exchange Act(17 CFR 240.13e-4(c))

~~(Central~~Securities ~~Index~~registered ~~Key~~pursuant ~~Number~~to ~~0001549574~~Section 12(b) of the Act:

~~(Exact~~Title ~~name~~ of ~~the~~each ~~sponsors~~class asTrading ~~specified~~Symbol(s) inName ~~its~~of ~~charters)~~each exchange on which registered

Delaware	333-286173-02	22-3442024
(State or other jurisdiction	(Commission File Number	(IRS Employer Identification
of incorporation of depositor)	of issuing entity)	No. of depositor)

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

200 West Street
New York, New York	10282
(Address of principal executive offices of depositor)	(Zip Code of depositor)

☐ Emerging growth company

~~Depositor’s~~☐ If an ~~telephone~~emerging ~~number~~growth company, ~~including~~indicate ~~area~~by ~~code~~ 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(~~212~~a) of ~~902-1000~~ the Exchange Act.

~~Not~~Item ~~Applicable~~6.02 Change of Servicer or Trustee.

The Pacifica Hotel Portfolio (~~Former~~4-Pack) ~~name~~Mortgage orLoan, ~~former~~which ~~address~~constituted approximately 0.9% of the asset pool of the issuing entity as of its cut-off date, ifis ~~changed~~an ~~since~~asset ~~last~~of the issuing entity and is part of a loan combination that ~~report~~is being serviced and administered under the pooling and servicing agreement, dated as of September 1, 2025, relating to the Benchmark 2025-V17 Mortgage Trust filed as Exhibit 4.5 to the registrant’s Current Report on Form 8-K filed on October 15, 2025 (the “BMARK 2025-V17 PSA”). Pursuant to Section 3.22(b) of the BMARK 2025-V17 PSA, Greystone Servicing Company LLC was removed as special servicer of the Pacifica Hotel Portfolio (4-Pack) Mortgage Loan and Torchlight Loan Services, LLC (“Torchlight”), a Delaware limited liability company, was appointed as the successor special servicer of the Pacifica Hotel Portfolio (4-Pack) Mortgage Loan under the BMARK 2025-V17 PSA. This Current Report on Form 8-K is being filed to record that, effective as of July 8, 2026, the Pacifica Hotel Portfolio (4-Pack) Mortgage Loan will be specially serviced, if necessary, pursuant to the BMARK 2025-V17 PSA, by Torchlight. Torchlight maintains its principal special servicing office at 90 Park Avenue, 20th Floor, New York, New York 10016 and its telephone number is 212-883-2800.

~~Check the appropriate box below if the Form 8-K filing~~SIGNATURES ~~is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:~~

~~[ ] Written~~Pursuant ~~communications~~to ~~pursuant~~the torequirements ~~Rule 425 under~~of the Securities Exchange Act ~~(17~~of ~~CFR~~1934, ~~230~~the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.~~425)~~

~~[ ] Soliciting~~GS ~~material~~Mortgage ~~pursuant~~Securities toCorporation ~~Rule 14a-12~~II ~~under the Exchange Act~~ (~~17 CFR 240.14a-12~~Depositor)

~~[ ] Pre-commencement~~/s/ ~~communications~~Scott ~~pursuant~~Epperson toScott ~~Rule 14d-2(b)~~Epperson, ~~under~~Chief ~~the~~Executive ~~Exchange Act (17 CFR 240.14d-2(b))~~Officer

~~[ ] Pre-commencement~~Date: July ~~communications~~8, ~~pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))~~2026

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

Title of each class Trading Symbol(s) Name of each exchange on which registered

Emerging growth company □

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. □

Item 1.01. Entry into a Material Definitive Agreement.

On October 30, 2025, GS Mortgage Securities Corporation II (the “Depositor”) caused (i) the issuance of the Benchmark 2025-V18 Mortgage Trust Commercial Mortgage Pass-Through Certificates, Series 2025-V18 (the “Certificates”) and (ii) the creation of an uncertificated interest (the “RR Interest”) in the Issuing Entity (as defined below) representing the right to receive a specified percentage of certain amounts collected on the Mortgage Loans (as defined below), net of all expenses of the Issuing Entity, in each case pursuant to a pooling and servicing agreement, dated as of October 1, 2025 (the “Pooling and Servicing Agreement”), among the Depositor, as depositor, Trimont LLC, as master servicer, Torchlight Loan Services, LLC, as special servicer, Computershare Trust Company, National Association, as certificate administrator and as trustee, and Park Bridge Lender Services LLC, as operating advisor and as asset representations reviewer. Capitalized terms used but not defined herein shall have the meanings assigned to them in the Pooling and Servicing Agreement.

The Certificates and the RR Interest represent, in the aggregate, the entire beneficial ownership in Benchmark 2025-V18 Mortgage Trust (the “Issuing Entity”), a common law trust fund formed under the laws of the State of New York pursuant to the Pooling and Servicing Agreement. The assets of the Issuing Entity consist primarily of 47 fixed-rate mortgage loans (the “Mortgage Loans”) secured by first liens on 88 commercial, multifamily and/or manufactured housing properties (the “Mortgaged Properties”).

The Mortgage Loan secured by the Mortgaged Property identified on Exhibit B to the Pooling and Servicing Agreement as “CFS Industrial HQ”, which is an asset of the Issuing Entity, is part of a whole loan (the “CFS Industrial HQ Whole Loan”) that includes the CFS Industrial HQ Mortgage Loan and a certain other loan that is pari passu to the CFS Industrial HQ Mortgage Loan (the “CFS Industrial HQ Companion Loan”). The CFS Industrial HQ Companion Loan is not an asset of the Issuing Entity.

As of December 23, 2025, the CFS Industrial HQ Whole Loan, including the CFS Industrial HQ Mortgage Loan, is being serviced and administered pursuant to (a) a pooling and servicing agreement, an executed version of which is attached hereto as Exhibit 4.1 and which is dated as of December 1, 2025 (the “Benchmark 2025-V19 Pooling and Servicing Agreement”), among Citigroup Commercial Mortgage Securities Inc., as depositor, Midland Loan Services, a Division of PNC Bank, National Association, as master servicer and as special servicer, Park Bridge Lender Services LLC, as operating advisor and as asset representations reviewer, Citibank, N.A., as certificate administrator, and Wilmington Savings Fund Society, FSB, as trustee and (b) the related Co-Lender Agreement (as defined in the Pooling and Servicing Agreement), as to which an executed version was attached to the current report on Form 8-K filed by the Issuing Entity on October 15, 2025.

The servicing terms of the Benchmark 2025-V19 Pooling and Servicing Agreement applicable to the servicing of the CFS Industrial HQ Mortgage Loan are similar in all material respects to the servicing terms of the Pooling and Servicing Agreement applicable to the servicing of the other Mortgage Loans, but will differ in certain respects, as described in the section captioned “Pooling and Servicing Agreement—Servicing of the Non-Serviced Mortgage Loans” in the Prospectus (SEC File Number 333-286173-02) filed with the Securities and Exchange Commission on October 30, 2025 pursuant to Rule 424(b)(2).

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.

Description

Exhibit 4.1

Pooling and Servicing Agreement, dated as of December 1, 2025, among Citigroup Commercial Mortgage Securities Inc., as depositor, Midland Loan Services, a Division of PNC Bank, National Association, as master servicer and as special servicer, Park Bridge Lender Services LLC, as operating advisor and as asset representations reviewer, Citibank, N.A., as certificate administrator, and Wilmington Savings Fund Society, FSB, as trustee.

Pursuant to the requirements of the Securities Exchange Act of 1934, the depositor has caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: December 29, 2025	GS MORTGAGE SECURITIES CORPORATION II
	By:	/s/ Scott Epperson
		Name:	Scott Epperson
		Title:	Chief Executive Officer

INDEX TO EXHIBITS

Item 601(a) of Regulation S-K Exhibit No.		Description	Paper (P) or Electronic (E)
4.1		Pooling and Servicing Agreement, dated as of December 1, 2025, among Citigroup Commercial Mortgage Securities Inc., as depositor, Midland Loan Services, a Division of PNC Bank, National Association, as master servicer and as special servicer, Park Bridge Lender Services LLC, as operating advisor and as asset representations reviewer, Citibank, N.A., as certificate administrator, and Wilmington Savings Fund Society, FSB, as trustee.	(E)

Filing Compare · Benchmark 2025-V18 Mortgage Trust