LAC director exercises 19,348 RSUs into shares

LITHIUM AMERICAS CORP. director Philip Montgomery reported the exercise of restricted share units into common shares.

Rhea-AI Filing Summary

LITHIUM AMERICAS CORP. director Philip Montgomery reported the exercise of restricted share units into common shares. He acquired 19,348 common shares through a derivative exercise on June 26, 2026, and held 19,348 common shares directly after the transaction. A related derivative entry shows 19,348 RSUs tied to the same number of underlying common shares, with 38,697 RSUs shown as held following the transaction. Each RSU represents a contingent right to receive one common share, from a grant made on June 26, 2025 that vests in one-third installments annually beginning on the first anniversary of the grant date.

Insider Trade Summary

19,348 shares exercised/converted

Exercise 2 txns

Insider MONTGOMERY PHILIP

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Share Units ("RSUs")	19,348	$0.00	$0.00
Exercise	Common Shares	19,348	$0.00	$0.00

Holdings After Transaction: Restricted Share Units ("RSUs") — 38,697 contracts (Direct); Common Shares — 19,348 shares (Direct)

Footnotes (2)

1. F1. Each restricted share unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.
2. F2. Represents grant of RSUs on June 26, 2025, which vest 1/3 annually beginning on the one-year anniversary of the grant date.

Key Figures

Common shares acquired: 19,348 shares RSU transaction amount: 19,348 RSUs Common shares held after: 19,348 shares +2 more

5 metrics

Common shares acquired 19,348 shares Non-derivative common shares acquired via derivative exercise on June 26, 2026

RSU transaction amount 19,348 RSUs Derivative entry tied to 19,348 underlying common shares

Common shares held after 19,348 shares Total direct common share ownership following the transaction

RSUs held after 38,697 RSUs Total restricted share units shown following the transaction

RSU grant date June 26, 2025 Grant of RSUs vesting one-third annually beginning on the first anniversary

Key Terms

Restricted Share Units ("RSUs"), contingent right, exercise or conversion of derivative security

3 terms

Restricted Share Units ("RSUs") financial

"Restricted Share Units ("RSUs")"

contingent right financial

"represents a contingent right to receive one share of the Issuer's common stock"

exercise or conversion of derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did LAC director Philip Montgomery report?

Philip Montgomery reported exercising restricted share units into common shares. On June 26, 2026, he acquired 19,348 common shares through a derivative exercise, converting compensation-linked RSUs into directly held equity in Lithium Americas Corp.

How many LAC common shares does Philip Montgomery hold after this Form 4?

After the reported transaction, Montgomery directly holds 19,348 common shares. This figure comes from the non-derivative line of the Form 4, which shows his post-transaction ownership of Lithium Americas Corp. common shares following the RSU conversion.

What are the terms of Philip Montgomery’s RSU grant at Lithium Americas (LAC)?

The RSU grant was made on June 26, 2025 and vests one-third annually. Each restricted share unit represents a contingent right to receive one common share, starting vesting on the first anniversary of the grant date according to the disclosed footnotes.

How many restricted share units are shown for Philip Montgomery after the transaction?

The derivative section shows 38,697 restricted share units following the transaction. One line records 19,348 RSUs tied to the same number of underlying common shares, and the total RSUs after this event are disclosed as 38,697 units.

Does this LAC Form 4 show any open-market buying or selling?

No open-market purchases or sales are reported. The Form 4 classifies both entries with code M, meaning an exercise or conversion of derivative securities, reflecting compensation-related RSU activity rather than market trading in Lithium Americas shares.

What does each RSU reported for LAC’s Philip Montgomery represent?

Each restricted share unit represents a contingent right to receive one common share. This means when vesting conditions are met, each RSU can settle into one Lithium Americas Corp. common share under the terms described in the footnotes.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/29/2026 - 04:30 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

MONTGOMERY PHILIP

(Last) (First) (Middle)

C/O LITHIUM AMERICAS CORP.

522 S. ROCK BLVD., SUITE 200

(Street)

RENO NEVADA 89502

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
LITHIUM AMERICAS CORP. [ LAC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Shares	06/26/2026		M		19,348	A	(1)	19,348	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Share Units ("RSUs")	(1)	06/26/2026		M			19,348	(2)	(2)	Common Shares	19,348	$0	38,697	D

Explanation of Responses:

1. Each restricted share unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock.

2. Represents grant of RSUs on June 26, 2025, which vest 1/3 annually beginning on the one-year anniversary of the grant date.

	/s/ Tereza Fonda as attorney-in-fact for Philip Montgomery	06/29/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)