UBS AG refreshes Swiss counsel opinion in Form F-3 filing

Rhea-AI Filing Summary

UBS AG filed a Form 6-K to update the legal opinion associated with its existing shelf registration statement on Form F-3. The report states that a new Opinion of Homburger AG, acting as special Swiss counsel to UBS, is being filed as Exhibit 5.3 to the Form F-3 and replaces a prior opinion dated August 1, 2025. The Form 6-K is incorporated by reference into the Form F-3 registration statement, keeping the legal documentation for UBS’s registered securities current.

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 UNDER
THE SECURITIES EXCHANGE ACT OF 1934

Date: November 20, 2025

Commission File Number: 1-15060

UBS AG

(Translation of Registrant’s Name Into English)

Bahnhofstrasse 45, Zurich, Switzerland, and
Aeschenvorstadt 1, Basel, Switzerland
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒             Form 40-F ☐

This Form 6-K is hereby incorporated by reference into the registration statement of UBS AG on Form F-3 (Registration Number 333-283672).

This Form 6-K consists of the Opinion of Homburger AG, as special Swiss counsel to UBS AG (“UBS”), which appears as an exhibit hereto and is incorporated into this Form 6-K as if set forth in full herein. The Opinion of Homburger AG is filed herewith as Exhibit 5.3 to the Registration Statement of UBS AG on Form F-3 initially filed on December 6, 2024 and effective February 6, 2025 (File No. 333-283672) and replaces the existing Opinion of Homburger AG dated August 1, 2025, as special Swiss Counsel to UBS filed therewith as Exhibit 5.3.

SIGNATURES

Pursuant to the requirements 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 AG
	By:	/s/ Timothy Geller
		Name: Timothy Geller
		Title: Executive Director
	By:	/s/ Yan Zhang
		Name: Yan Zhang
		Title: Director

Date: 20^th November 2025

FAQ

What did UBS AG (AMUB) report in this Form 6-K?

UBS AG reported that it is filing an updated Opinion of Homburger AG, its special Swiss counsel, and incorporating this Form 6-K by reference into its existing Form F-3 registration statement.

Why is UBS AG updating the Homburger AG opinion on its Form F-3?

The company is filing a new legal opinion from Homburger AG as Exhibit 5.3 to its Form F-3, which replaces the prior opinion dated August 1, 2025, to keep the legal documentation for the registration statement current.

Which registration statement is affected by this UBS AG Form 6-K?

The updated opinion is filed as Exhibit 5.3 to UBS AG’s registration statement on Form F-3 with file number 333-283672.

Is this UBS AG (AMUB) Form 6-K related to new securities being issued?

The disclosure focuses on an updated legal opinion for an existing Form F-3 registration statement, not on announcing a new securities issuance in this report.

Who signed the UBS AG Form 6-K filed on November 20, 2025?

The report was signed on behalf of UBS AG by Timothy Geller, Executive Director, and Yan Zhang, Director.

How does this UBS AG Form 6-K affect the Form F-3 registration statement?

The Form 6-K is expressly incorporated by reference into the Form F-3, meaning the updated Homburger AG opinion becomes part of the registration statement’s legal documentation.