Standard Lithium files 6-K incorporating Exhibits 99.1–99.6 into F-10

Rhea-AI Filing Summary

Standard Lithium Ltd. filed a Form 6-K. The company states that Exhibits 99.1 through 99.6—consents from six named experts—are incorporated by reference into its Registration Statement on Form F-10 (File No. 333-289110). The filing is administrative in nature and lists the included exhibits and their incorporation language. It was signed by Chief Financial Officer Salah Gamoudi on October 16, 2025.

Form 6-K: How Foreign Companies Report to the SEC →

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
of the Securities Exchange Act of 1934

For the month of	October		2025
Commission File Number	001-40569

Standard Lithium Ltd.

(Translation of registrant’s name into English)

Suite 1625, 1075 W Georgia Street

Vancouver, British Columbia, Canada V6E 3C9

(Address of principal executive offices)

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 x

INCORPORATION BY REFERENCE

Exhibits 99.1, 99.2, 99.3, 99.4, 99.5 and 99.6 of this Report on Form 6-K are incorporated by reference into the Registration Statement on Form F-10 (File No. 333-289110) of the Registrant, as amended or supplemented.

DOCUMENTS INCLUDED AS PART OF THIS REPORT

Exhibit
99.1	Consent of Patricio Pinto Gallardo
99.2	Consent of Aleksandar Spasojevic
99.3	Consent of Randal M. Brush
99.4	Consent of Robert E. Williams, Jr.
99.5	Consent of Thomas Wynn Rogers, Jr.
99.6	Consent of Richard DeLong

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.

Standard Lithium Ltd.

(Registrant)

Date:	October 16, 2025		By:	/s/ Salah Gamoudi
				Name:	Salah Gamoudi
				Title:	Chief Financial Officer

FAQ

What did SLI file in this update?

Standard Lithium filed a Form 6-K that incorporates Exhibits 99.1–99.6 into its Form F-10 (File No. 333-289110).

Which exhibits are included in the Form 6-K?

Exhibits 99.1–99.6, each a consent from named experts: Patricio Pinto Gallardo, Aleksandar Spasojevic, Randal M. Brush, Robert E. Williams, Jr., Thomas Wynn Rogers, Jr., and Richard DeLong.

How are these exhibits used by Standard Lithium (SLI)?

They are incorporated by reference into Standard Lithium’s Form F-10 registration statement.

What is the Form F-10 file number for SLI?

The file number is 333-289110.

Who signed the filing and when?

It was signed by Salah Gamoudi, Chief Financial Officer, on October 16, 2025.

Does Standard Lithium file annual reports on Form 20-F or 40-F?

Standard Lithium indicates Form 40-F for annual reports.