GM sells 15M Lithium Argentina (LAR) shares in block trade, ends 5% stake

Rhea-AI Filing Summary

General Motors Holdings LLC and General Motors Company have fully exited their reportable stake in Lithium Argentina AG. On March 26, 2026, GM Holdings sold 15,002,245 common shares in a block sale at $5.85 per share. Following this transaction, the reporting persons now report beneficial ownership of 0 common shares, representing 0% of Lithium Argentina’s outstanding common shares, so they are no longer more-than-5% holders.

Insights

Equity ownership and disclosure analyst

GM’s block sale removes it as a major Lithium Argentina shareholder.

General Motors Holdings LLC sold 15,002,245 Lithium Argentina common shares at $5.85 per share in a single block transaction on March 26, 2026. After this sale, GM Holdings and General Motors Company report beneficial ownership of 0 shares, or 0% of the company.

This filing marks a transition from being a more-than-5% shareholder to no longer having reportable ownership. It does not describe the buyer or broader strategic context, but it confirms that GM is no longer a significant equity holder in Lithium Argentina AG.

Key Figures

Block sale size: 15,002,245 shares Sale price: $5.85 per share Post-transaction beneficial ownership: 0 shares +3 more

6 metrics

Block sale size 15,002,245 shares Common shares sold by GM Holdings on March 26, 2026

Sale price $5.85 per share Price for the March 26, 2026 block sale

Post-transaction beneficial ownership 0 shares Shares beneficially owned by each reporting person after the sale

Post-transaction ownership percentage 0% Percent of Lithium Argentina common shares represented after the sale

Former ownership threshold More than 5% Reporting persons ceased to be beneficial owners of over 5% on March 26, 2026

Amendment number Amendment No. 3 Schedule 13D/A amendment updating GM’s ownership in Lithium Argentina

Key Terms

Schedule 13D, beneficial ownership, block sale transaction, plan of arrangement, +1 more

5 terms

Schedule 13D regulatory

"This Amendment No. 3 to relates to the common shares"

A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.

beneficial ownership financial

"the Reporting Persons ceased to be the beneficial owners of more than five percent"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

block sale transaction financial

"GM Holdings sold 15,002,245 Common Shares in a block sale transaction at a price of $5.85 per share"

plan of arrangement regulatory

"the Issuer completed a plan of arrangement under the laws of the province of British Columbia"

A plan of arrangement is a formal, court-approved agreement that reorganizes ownership or assets of a company—such as merging businesses, exchanging shares for cash or other securities, or splitting off parts of the company. Investors should care because it can change the value, number, and rights of their holdings and is often binding once approved by both shareholders and a court, offering more legal certainty than a simple vote. Think of it as a legally supervised recipe for how a company will be reshaped and who ends up with what.

Separation financial

"the Issuer completed the planned separation of its U.S. and Argentina businesses (the "Separation")"

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3)

Lithium Argentina AG

(Name of Issuer)

Common Shares, $0.01 par value

(Title of Class of Securities)

H5012F103

(CUSIP Number)

John S. Kim
General Motors Holdings LLC, 1240 Woodward Avenue,
Detroit, MI, 48265
(313) 667-2303

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

03/26/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): H5012F103

1

Name of reporting person

GENERAL MOTORS HOLDINGS LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

0.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP Number(s): H5012F103

1

Name of reporting person

GENERAL MOTORS COMPANY

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

0.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0 %

14

Type of Reporting Person (See Instructions)

CO

Comment for Type of Reporting Person:

This Amendment No. 3 (this "Amendment No. 3") to Schedule 13D relates to the common shares, $0.01 par value ("Common Shares"), of Lithium Argentina AG (formerly "Lithium Americas (Argentina) Corp."), a Swiss share corporation (the "Issuer"), and amends the initial statement on Schedule 13D, filed on February 28, 2023, as amended by Amendment No. 1, filed on March 29, 2023 and Amendment No. 2, filed on October 12, 2023 (the "Prior Statement," and as amended by this Amendment No. 3, the "Schedule 13D"), by General Motors Holdings LLC, a Delaware limited liability company ("GM Holdings"), and General Motors Company, a Delaware corporation ("GM" and, collectively with GM Holdings, the "Reporting Persons"). This Amendment No. 3 is being filed to report a decrease in the number of Common Shares beneficially owned by the Reporting Persons, as a result of the sale of Common Shares on March 26, 2026. As a result of the foregoing, the Reporting Persons no longer beneficially own more than 5% of the outstanding Common Shares of the Issuer. Except as specifically provided herein, this Amendment No. 3 does not modify any of the information previously reported in the Prior Statement. Capitalized terms used but not defined in this Amendment No. 3 shall have the same meanings herein as are ascribed to such terms in the Prior Statement.

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Shares, $0.01 par value
(b)	Name of Issuer: Lithium Argentina AG
(c)	Address of Issuer's Principal Executive Offices: DAMMSTRASSE 19, Zug, SWITZERLAND , 6300.
Item 1 Comment: Item 1 of the Schedule 13D is hereby amended and restated as follows: This Schedule 13D relates to the Common Shares of the Issuer. The principal executive offices of the Issuer are located at Dammstrasse 19, 6300 Zug, Switzerland. On October 3, 2023, the Issuer completed the planned separation of its U.S. and Argentina businesses (the "Separation"), pursuant to which two public companies were established. As a result of the Separation, the Issuer changed its name from "Lithium Americas Corp." to "Lithium Americas (Argentina) Corp." and established a new publicly traded entity, named "Lithium Americas Corp." ("Spinco"). In connection with the Separation, the Issuer transferred the Thacker Pass lithium project located in Humboldt County, Nevada (the "Thacker Pass Project") to Spinco. On January 23, 2025, the Issuer completed a plan of arrangement under the laws of the province of British Columbia (the "Arrangement") involving the Issuer's continuation from the province of British Columbia under the name "Lithium Americas (Argentina) Corp." into Zug, Canton of Zug, Switzerland, as a Swiss share corporation under the name "Lithium Argentina AG." Following the Arrangement, the shareholders of the Issuer prior to the Arrangement continued to hold all the issued and outstanding registered common shares of the Issuer.
Item 5.	Interest in Securities of the Issuer
(a)	Item 5 of the Schedule 13D is hereby amended and restated as follows: (a), (b) The responses of the Reporting Persons with respect to Rows 7 through 13 of the cover pages of the Reporting Persons to this Schedule 13D are incorporated by reference herein. To the knowledge of the Reporting Persons, none of the persons listed on Exhibit 99.2 have any beneficial ownership of any Common Shares.
(c)	On March 26, 2026, GM Holdings sold 15,002,245 Common Shares in a block sale transaction at a price of $5.85 per share. Except as disclosed in this Item 5(c), none of the Reporting Persons, nor, to the knowledge of the Reporting Persons, any of the persons listed on Exhibit 99.2, have effected any transactions that may be deemed to be a transaction in the Common Shares during the past 60 days.
(d)	No other person is known by the Reporting Persons to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, Common Shares that may be deemed to be beneficially owned by the Reporting Persons as provided for herein.
(e)	On March 26, 2026, as a result of the sale of Common Shares reported in Item 5(c), the Reporting Persons ceased to be the beneficial owners of more than five percent of the Issuer's outstanding Common Shares.
Item 7.	Material to be Filed as Exhibits.
	Item 7 is hereby amended by deleting Exhibit 99.1 and Exhibit 99.2 thereto and inserting the following exhibits in their place: Exhibit Description 99.1 Joint Filing Agreement, dated March 30, 2026, by and between the Reporting Persons 99.2 Directors and Executive Officers of GM and GM Holdings

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

GENERAL MOTORS HOLDINGS LLC

Signature:	/s/ John S. Kim
Name/Title:	John S. Kim/ Assistant Secretary
Date:	03/30/2026

GENERAL MOTORS COMPANY

Signature:	/s/ John S. Kim
Name/Title:	John S. Kim/ Assistant Secretary
Date:	03/30/2026

FAQ

What change in ownership does GM report in this Lithium Argentina (LAR) filing?

General Motors Holdings LLC reports that it no longer beneficially owns any Lithium Argentina common shares. After selling 15,002,245 shares in a block trade, the reporting persons’ beneficial ownership fell to 0 shares, or 0% of the company’s outstanding common shares.

How many Lithium Argentina (LAR) shares did GM sell and at what price?

GM Holdings sold 15,002,245 Lithium Argentina common shares in a single block sale. The filing states the sale price was $5.85 per share, providing a clear view of both the transaction size and per-share consideration in this divestment.

When did General Motors’ sale of Lithium Argentina (LAR) shares occur?

The block sale of Lithium Argentina common shares by GM Holdings occurred on March 26, 2026. That same transaction caused General Motors and GM Holdings to cease being beneficial owners of more than 5% of Lithium Argentina’s outstanding common shares.

Does General Motors still own more than 5% of Lithium Argentina (LAR)?

No. The filing states that, as of March 26, 2026, following the block sale of 15,002,245 common shares, the reporting persons ceased to be beneficial owners of more than 5% of Lithium Argentina’s outstanding common shares and now report 0% beneficial ownership.

What is the significance of this Schedule 13D/A Amendment No. 3 for Lithium Argentina (LAR)?

This amendment primarily updates ownership information, confirming General Motors and GM Holdings reduced their beneficial ownership to 0%. It signals the end of their status as a more-than-5% shareholder, which can matter for governance, reporting, and how concentrated the shareholder base appears.

What corporate background on Lithium Argentina (LAR) is mentioned in the filing?

The filing notes Lithium Argentina completed a business separation in 2023, transferring the Thacker Pass project to a new company, Lithium Americas Corp. It also describes a 2025 plan of arrangement moving the issuer’s jurisdiction to Zug, Switzerland under the name Lithium Argentina AG.