Nexa Resources director files initial Form 3

Nexa Resources S.A. director Zuniga Gianfranco Maximo Dante Castagnola filed an initial statement of beneficial ownership on Form 3.

Accepted by SEC EDGAR 03/18/2026 - 09:20 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Nexa Resources S.A. director Zuniga Gianfranco Maximo Dante Castagnola filed an initial statement of beneficial ownership on Form 3. This filing establishes his status as a reporting insider and provides the SEC and investors with baseline information on his equity position in the company, with no transactions reported.

FAQ

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

What does the Nexa Resources (NEXA) Form 3 filing for Zuniga Gianfranco mean?

The Form 3 filing records Zuniga Gianfranco Maximo Dante Castagnola as an insider of Nexa Resources. It establishes his reporting status as a director and provides baseline ownership information, without showing any new stock purchases, sales, or option exercises in this filing.

Did Zuniga Gianfranco trade Nexa Resources (NEXA) shares in this Form 3?

No transactions are reported in this Form 3 for Zuniga Gianfranco. The filing functions as an initial ownership statement, identifying him as a director and setting a starting point for any future reportable trades under SEC insider reporting rules.

Why is a Form 3 important for Nexa Resources (NEXA) insiders?

Form 3 is important because it formally identifies an insider’s initial ownership position in Nexa Resources. After this baseline is set, any subsequent changes in that insider’s holdings must generally be reported on Form 4 or Form 5, enhancing transparency for investors.

What insider role does Zuniga Gianfranco hold at Nexa Resources (NEXA)?

The filing shows that Zuniga Gianfranco Maximo Dante Castagnola is a director of Nexa Resources. As a director, he is considered an insider under SEC rules and must report his equity ownership and future changes in that ownership through periodic SEC forms.

Does this Nexa Resources (NEXA) Form 3 indicate any derivative positions?

The structured data for this Form 3 shows no derivative positions or derivative transactions for Zuniga Gianfranco. It is a straightforward initial ownership filing, with no option exercises, warrants, or other derivative securities reported in the provided information.

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

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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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Zuniga Gianfranco Maximo Dante Castagnola

(Last) (First) (Middle)

37A AVENUE J.F. KENNEDY

(Street)

LUXEMBOURG GRAND DUCHY OF LUXEMBOURG L-1855

(City) (State) (Zip)

LUXEMBOURG

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Nexa Resources S.A. [ NEXA ]

3a. Foreign Trading Symbol

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

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

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

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)

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:

No securities are beneficially owned.

	/s/ Felipe da Silva Azevedo, attorney-in-fact for Gianfranco Maximo Dante Castagnola Zuniga	03/18/2026
	** 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.
* Form 3: SEC 1473 (03-26)