Exhibit 1

Report of Independent Accountants on Applying

Agreed-Upon Procedures

GS Mortgage Securities Corporation II

200 West Street

New York, NY 10282

We (“us” or “PwC”) have performed the procedures enumerated below, which were agreed to by GS Mortgage Securities Corporation II (the “Company,” as the engaging party ) and Goldman Sachs & Co. LLC, Goldman Sachs Mortgage Company, and Goldman Sachs Bank USA, who are collectively referred to as the “Specified Parties”, solely to assist you in performing certain procedures related to the accuracy of certain attributes and calculations within the Final Data File (defined below). The procedures were performed with respect to the 425 Trust 2026-LEX, Commercial Mortgage Pass-Through Certificates, Series 2026-LEX securitization (the “Transaction”). The Company (the “Responsible Party”) is responsible for the Transaction and the accuracy of the information contained in the Final Data File.

In an agreed-upon procedures engagement, we perform specific procedures that the Specified Parties have agreed to and acknowledged to be appropriate for the intended purpose of the engagement and we report on findings based on the procedures performed. The procedures performed may not address all the items of interest to a user of this report and may not meet the needs of all users of this report and, as such, users are responsible for determining whether the procedures performed are appropriate for their purposes. The Specified Parties have agreed to and acknowledged that the procedures performed are appropriate for their purposes. This report may not be suitable for any other purpose.

Procedures and Findings

In connection with the Transaction, the Specified Parties have requested that the procedures be performed on 1 mortgage loan (the “Mortgage Loan Asset”) secured by 1 mortgaged property (the “Mortgaged Property”, collectively with the Mortgage Loan Asset, the “Collateral”) within the Transaction.

This agreed-upon procedures engagement was not conducted for the purpose of satisfying any criteria for due diligence published by a nationally recognized statistical rating organization.

In addition, PwC should not be regarded as having in any way warranted or given any assurance as to the following items:

We have not performed any procedures with respect to the fair value of the securities being offered in the Transaction and PwC expresses no opinion on the fair value of these securities. PwC should not be regarded as having performed any procedures other than those detailed in this report.

With respect to any terms or requirements of the Transaction documents that do not appear in this report, we performed no procedures and, accordingly, the procedures we performed would not ensure that any requirements are satisfied. Further, we have performed only the following agreed-upon procedures and therefore make no representations regarding the adequacy of disclosures or whether any material facts have been omitted from the Transaction documents.

It should be understood that we make no representations as to:

These procedures should not be taken to supplant any additional inquiries or procedures that the Specified Parties would undertake in consideration of the Transaction.

For the purpose of this report:

●     The phrase “Cut-off Date” refers to the date of June 30, 2026.

●     The phrase “Final Data File” refers to the following Microsoft Excel (“Excel”) file provided by the Company, which includes certain attributes related to the Collateral. The Final Data File was provided on June 3, 2026 with certain Collateral attribute calculations adjusted for the Cut-off Date:

●     The phrase “Specified Attributes” refers to the fields in the Final Data File.

●     The phrase “Source Document” refers to the documents (including any applicable amendments, assumptions or exhibits thereof) provided by the Company, related to the information contained in the Final Data File.

●     The phrase “Loan File” refers to any Source Document or collection of Source Documents provided by the Company, and used by us, in performing the procedures enumerated below.

●     The term “compared” refers to the comparison of certain Specified Attributes to Source Documents, as indicated within Exhibit A.

●     The term “recalculated” refers to a re-computation of one or more Specified Attributes using the Company provided methodology as shown within Exhibit B.

●     The phrase “in agreement” refers to the comparison or recalculation of one or more Specified Attributes which resulted in a match, or a difference that was within the Company provided tolerance level (if any) as shown within Exhibit A.

Source Documents included in the Loan File:

●     The phrase “Appraisal Report” refers to a signed or draft appraisal document or exhibit.

●     The phrase “Engineering Report” refers to a draft or signed property condition assessment document, exhibit, or matrix.

●     The phrase “Environmental Report” refers to a draft or signed phase I and phase II (if applicable) environmental document or exhibit.

●     The phrase “Fee Schedule” refers to the documentation for the administrative fee rate related to the Transaction.

●     The phrase “Guaranty Agreement” refers to a signed or draft guaranty agreement.

●     The phrase “Insurance Summary” refers to a draft or final certificate of insurance and/or insurance risk analysis summarizing the coverage for each insurance category.

●     The phrase “Loan Agreement” refers to a draft loan agreement and any exhibits or schedules thereof.

●     The phrase “Management Agreement” refers to a signed or draft management agreement and any amendments, assignments, assumptions or non-disturbance agreements thereof.

●     The phrase “Underwriting File” refers to the electronic underwriting file consisting of historical and underwritten cash flow statements and underwritten rent roll prepared by the Company’s underwriting team.

The documents made available to us by the Company for purposes of performing the procedures may have included drafts, unsigned, or non-final versions. We have not verified that such documents were executed or represent the final agreed-upon terms, and did not perform any procedures to compare such documents to executed versions, if any. We did not validate, confirm, or review any signatures for authenticity. Accordingly, we make no representation regarding the completeness, accuracy, or finality of such documents.

The procedures performed and results thereof are described below. In performing this engagement, we received one or more preliminary data file(s) and performed certain procedures as set forth in Exhibit A and Exhibit B. The procedures identified differences, which were communicated to the Responsible Party. The Responsible Party revised one or more of the preliminary data files based on such communicated differences, where they determined it to be appropriate. We then performed these procedures on the Final Data File, and the results of those procedures are described below.

From May 28, 2026 through June 3, 2026, the Company provided us with the Source Documents related to the Collateral for which we:

The recalculation methodology associated with the Recalculated Attributes is listed in Exhibit B. For each procedure where a recalculation was performed, if necessary, we compared the underlying attributes to the corresponding Source Documents and found them to be in agreement. We did not perform any procedures denoted with a Source Document of “None - Company Provided”, in Exhibit A.

This agreed-upon procedures engagement was conducted in accordance with attestation standards established by the American Institute of Certified Public Accountants. We were not engaged to, and did not conduct an audit or an examination engagement, the objective of which would be the expression of an opinion, or a review engagement, the objective of which would be the expression of a conclusion, on the Final Data File.  Accordingly, we do not express such an opinion or conclusion.  Had we performed additional procedures, other matters might have come to our attention that would have been reported to you.

In performing this engagement, we are required to be independent of the Responsible Party and to meet our ethical responsibilities, in accordance with the relevant ethical requirements related to our agreed-upon procedures engagement.

This report is intended solely for the information and use of the Specified Parties (including for the purpose of substantiating the Specified Parties' “due diligence defense” under the Securities Act of 1933), and is not intended to be and should not be used by anyone other than the Specified Parties.

If a party has obtained, or has access to, this report without having executed an agreement with PwC wherein such party accepts responsibility for the appropriateness of the procedures performed (such party is referred to as a “Non-Specified Party”), that Non-Specified Party cannot:

Rely upon this report, and any use of this report by that Non-Specified Party is its sole responsibility and at its sole and exclusive risk; and

Acquire any rights or claims against PwC, and PwC assumes no duties or obligations to such Non-Specified Party.

A Non-Specified Party may not disclose or distribute this report or any of the report’s contents to any

other party (including but not limited to electronic distribution and/or posting to a website pursuant to Rule 17g-5 of the Securities Exchange Act of 1934).

The procedures enumerated above were performed as of the date of this report, and we disclaim any consideration of any events and circumstances occurring after the date of this report. Further, we have no obligation to update this report because of events occurring, or data or information coming to our attention, subsequent to the date of this report.

/s/ PricewaterhouseCoopers LLP

New York, NY

June 3, 2026

Exhibits

Exhibit A – Loan File Review Procedures

Exhibit B – Recalculation Methodology

Exhibit A – Loan File Review Procedures

* The fields for the noted Specified Attributes were either not populated in the Final Data File or populated with the term “NAP”. As such, we were instructed by the Company to not perform any procedures on these Specified Attributes.

Exhibit B – Recalculation Methodology