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

For the month of: November 2025

Commission file number: 001-38350

Lithium Argentina AG

(Translation of Registrant’'s name into English)

Dammstrasse 19, 6300 Zug,

Switzerland

(Address of Principal Executive Office)

900 West Hastings Street, Suite ~~310~~300,

Vancouver, British Columbia,

Canada V6C 1E5

(North American Mailing Address)

Indicate by check mark whether the registrant files or will file annual reports under cover:

Form 20-F [X] Form 40-F [ ]

INCORPORATION BY REFERENCE

Exhibits 99.1, 99.2, 99.6, 99.7 and 99.8 to this Form 6-K of Lithium Argentina AG (the "Company") are hereby incorporated by reference as exhibits to the Registration Statement on Form S-8 (File No. 333-282163) of the Company, as amended or supplemented.

SIGNATURE

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.

Lithium Argentina AG (Registrant) By: “"Samuel Pigott”" Name: Samuel Pigott Title: President and Chief Executive Officer

Dated: November 1014, 2025

EXHIBIT INDEX

Exhibit	Description	~~Description~~
99.1	News Release dated November 10, 2025	~~Condensed Consolidated Interim Financial Statements for the three and nine months ended September 30, 2025~~
99.2		Management’s Discussion and Analysis for the three and nine months ended September 30, 2025
99.3		CEO Certification
99.4		CFO Certification
99.5		News Release dated November 10, 2025
99.6		Consent of David Burga
99.7		Consent of James Wang
99.8		Consent of Frederik Reidel

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