Ternium (TX) Chief EHS Officer discloses holding of 157 ADS

Rhea-AI Filing Summary

Ternium S.A. reported the initial share holdings of Chief EHS Officer Marina Valeria Chiesa. The filing shows that she directly owns 157 Ternium American Depositary Shares (ADS) following the reported position. This is an initial ownership disclosure rather than a buy or sell transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Chiesa Marina Valeria

Role Chief EHS Officer

Type	Security	Shares	Price	Value
holding	Ternium ADS	--	--	--

Holdings After Transaction: Ternium ADS — 157 shares (Direct)

Footnotes (1)

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

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1. Name and Address of Reporting Person^*

Chiesa Marina Valeria

(Last) (First) (Middle)

26, BOULEVARD ROYAL, 4TH FLOOR

(Street)

LUXEMBOURG N4 00000

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/05/2026

3. Issuer Name and Ticker or Trading Symbol
Ternium S.A. [ TX ]

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

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

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

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Ternium ADS	157	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Bruno Antenucci by Power of Attorney	03/05/2026
	** 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 5 (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.

FAQ

What does Ternium (TX) disclose in this Form 3 filing?

The filing discloses the initial share holdings of Chief EHS Officer Marina Valeria Chiesa. It reports that she directly owns 157 Ternium American Depositary Shares (ADS), establishing her starting ownership position as an insider of the company.

How many Ternium ADS does Marina Valeria Chiesa hold?

Marina Valeria Chiesa is reported to hold 157 Ternium American Depositary Shares (ADS). This number represents her direct ownership position following the reported status, as disclosed in the insider Form 3 ownership statement filed with regulators.

Is the Ternium (TX) Form 3 a buy or sell transaction?

The Form 3 does not report a buy or sell transaction. It is an initial ownership statement that records Marina Valeria Chiesa’s direct holding of 157 Ternium ADS, with the transaction direction classified as unknown in the underlying data.

What role does the insider in this Ternium (TX) Form 3 hold?

The insider in this filing, Marina Valeria Chiesa, serves as Ternium’s Chief EHS Officer. The Form 3 links this executive role to her direct ownership of 157 Ternium American Depositary Shares (ADS) as an initial insider disclosure.

Are the Ternium ADS in this Form 3 held directly or indirectly?

The 157 Ternium American Depositary Shares (ADS) reported in the filing are held directly. The ownership code is listed as “D” for direct ownership, and no separate entity or indirect holding structure is described in the provided disclosure.