STANDARD LITHIUM LTD.

For the period ended Sep 21, 2026. Filed Sep 21, 2026.

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Sep 21, 2026 · Filed Sep 21, 2026

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6-K 1 tm2625594d1_6k.htm FORM 6-K

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 · September · 2026
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 o Form 40-Fx

INCORPORATION BY REFERENCE

Exhibit 99.1 of this Report on Form 6-K is incorporated by reference into the Registration Statements on Form F-10EF (File No. 333-289110) and Form S-8 (File No. 333-262400) of the Registrant, as amended or supplemented.

DOCUMENTS INCLUDED AS PART OF THIS REPORT

Exhibit
99.1	Material change report, dated September 15, 2026.

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:	September 21, 2026		By:	/s/ Salah Gamoudi
	Name:	Salah Gamoudi
	Title:	Chief Financial Officer

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