VinFast: Vingroup holds 1.2B subsidiary shares

Q: How many VFVN Series 5 Preference Shares did Vingroup acquire in relation to VFS?

Vingroup acquired 500,000,000 VFVN Series 5 Preference Shares on September 26, 2026. Its reported position following the transaction was 1,204,667,875 such preference shares.

The preference shares are exchangeable for VinFast ordinary shares subject to necessary approvals and other conditions.

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Form Type

Rhea-AI Filing Summary

VinFast Auto Ltd. director Pham Nhat Vuong reported Vingroup Joint Stock Company’s acquisition of 500,000,000 VFVN Series 5 Preference Shares on September 26, 2026. Vingroup’s reported position following the transaction was 1,204,667,875 VFVN Series 5 Preference Shares. The preference shares are shares of VinFast Vietnam Joint Stock Company, a VinFast subsidiary, and are exchangeable for VinFast ordinary shares at an exchange rate of 2.209 VFVN Series 5 Preference Shares to 1 ordinary share, subject to necessary approvals and other conditions. The reported underlying amount is 226,346,763 ordinary shares. Pham Nhat Vuong disclaimed beneficial ownership of shares held by Vingroup except to the extent of his pecuniary interest, if any.

Insider Trade Summary

Other: 500,000,000 shares

Other 1 txn

Insider Vuong Pham Nhat

Role Director

Type	Security	Shares	Price	Value
Other	VFVN Series 5 Preference Shares ^F1	500,000,000	--	--

Holdings After Transaction: VFVN Series 5 Preference Shares — 1,204,667,875 contracts (Indirect, By Vingroup)

Footnotes (1)

F1. CPUD VFVN05 preference shares ("VFVN Series 5 Preference Shares") in the capital of VinFast Vietnam Joint Stock Company ("VFVN"), a joint stock company organized in Vietnam and a subsidiary of the Issuer, held of record by Vingroup Joint Stock Company ("Vingroup"), a public company listed on the Ho Chi Minh Stock Exchange, in which the Reporting Person, directly and through a majority-owned affiliate, holds a majority interest. The Reporting Person disclaims beneficial ownership of the shares held by Vingroup except to the extent of his pecuniary interest therein, if any. The VFVN Series 5 Preference Shares are exchangeable for the Issuer's ordinary shares at an exchange rate of 2.209 VFVN Series 5 Preference Shares to 1 ordinary share, subject to obtaining necessary approvals and other conditions. The VFVN Series 5 Preference Shares have no expiration date.

Key Figures

VFVN Series 5 Preference Shares acquired: 500,000,000 shares Vingroup resulting position: 1,204,667,875 VFVN Series 5 Preference Shares Underlying VinFast ordinary shares: 226,346,763 shares +1 more

4 metrics

VFVN Series 5 Preference Shares acquired 500,000,000 shares By Vingroup on September 26, 2026

Vingroup resulting position 1,204,667,875 VFVN Series 5 Preference Shares Following the September 26, 2026 transaction

Underlying VinFast ordinary shares 226,346,763 shares Reported underlying amount for the VFVN Series 5 Preference Shares

Exchange rate 2.209 VFVN Series 5 Preference Shares to 1 ordinary share Exchange is subject to necessary approvals and other conditions

Key Terms

VFVN Series 5 Preference Shares, exchange rate, pecuniary interest

3 terms

VFVN Series 5 Preference Shares financial

"The VFVN Series 5 Preference Shares are exchangeable for the Issuer’s ordinary shares"

exchange rate financial

"at an exchange rate of 2.209 VFVN Series 5 Preference Shares to 1 ordinary share"

Exchange rate is the price of one currency expressed in another—for example, how many euros you receive for one US dollar. It matters to investors because changes in that price alter the reported profits, costs and value of assets for companies and portfolios that operate or hold money across borders; think of it like switching measurement units, where the same item can look bigger or smaller depending on the unit used.

pecuniary interest regulatory

"except to the extent of his pecuniary interest therein, if any"

FAQ

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How many VFVN Series 5 Preference Shares did Vingroup acquire in relation to VFS?

Vingroup acquired 500,000,000 VFVN Series 5 Preference Shares on September 26, 2026. Its reported position following the transaction was 1,204,667,875 such preference shares.

Can Vingroup’s VFVN Series 5 Preference Shares be exchanged for VFS ordinary shares?

They are exchangeable for VinFast Auto Ltd. ordinary shares at an exchange rate of 2.209 VFVN Series 5 Preference Shares to 1 ordinary share, subject to necessary approvals and other conditions. The reported underlying amount is 226,346,763 ordinary shares, and the preference shares have no expiration date.

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Available on EDGAR 09/28/2026 - 06:05 AM Accepted by SEC EDGAR 09/28/2026 - 06:01 AM

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^*

Vuong Pham Nhat

(Last)

(First)

(Middle)

61 ROBINSON ROAD, #06-01

(Street)

SINGAPORE

068893

(City)

(State)

(Zip)

SINGAPORE

(Country)

2. Issuer Name and Ticker or Trading Symbol
VinFast Auto Ltd. [ VFS ]

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)
09/26/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
VFVN Series 5 Preference Shares	⁽¹⁾	09/26/2026		J⁽¹⁾		500,000,000		09/26/2026	⁽¹⁾	Ordinary Shares	226,346,763	⁽¹⁾	1,204,667,875	I	By Vingroup⁽¹⁾

Explanation of Responses:

1. CPUD VFVN05 preference shares ("VFVN Series 5 Preference Shares") in the capital of VinFast Vietnam Joint Stock Company ("VFVN"), a joint stock company organized in Vietnam and a subsidiary of the Issuer, held of record by Vingroup Joint Stock Company ("Vingroup"), a public company listed on the Ho Chi Minh Stock Exchange, in which the Reporting Person, directly and through a majority-owned affiliate, holds a majority interest. The Reporting Person disclaims beneficial ownership of the shares held by Vingroup except to the extent of his pecuniary interest therein, if any. The VFVN Series 5 Preference Shares are exchangeable for the Issuer's ordinary shares at an exchange rate of 2.209 VFVN Series 5 Preference Shares to 1 ordinary share, subject to obtaining necessary approvals and other conditions. The VFVN Series 5 Preference Shares have no expiration date.

	/s/ Le Thi Dieu My, attorney-in-fact	09/28/2026
	** 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)

Source: View Original Filing on SEC EDGAR