Ero Copper (ERO) adds 6-K press release to Form S-8 and Form F-10

Rhea-AI Filing Summary

Ero Copper Corp. submitted a Form 6-K as a foreign private issuer for September 2025. The filing primarily furnishes a press release dated September 18, 2025 as Exhibit 99.1. That exhibit is also incorporated by reference into the company’s existing Form S-8 and Form F-10 registration statements.

Form 6-K: How Foreign Companies Report to the SEC →

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

Form 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16
under the Securities Exchange Act of 1934

For the month of September 2025

Commission File Number: 001-40459

Ero Copper Corp.
(Translation of registrant's name into English)

625 Howe Street, Suite 1050
Vancouver, British Columbia V6C 2T6
Canada
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F [   ]      Form 40-F [ X ]

Exhibit 99.1 of this Form 6-K is incorporated by reference as additional exhibit to the registrant’s Registration Statement on Form S-8 (File NO. 333-264821) and Registration Statement on Form F-10 (File NO. 333-274097).

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Ero Copper Corp.
Date: September 18, 2025	By:	/s/ Deepk Hundal
		Name: Deepk Hundal
		Title: Executive Vice President, General Counsel and Corporate Secretary

EXHIBIT INDEX

Exhibit Number		Description
99.1		Press Release dated September 18, 2025

FAQ

What did Ero Copper Corp. (ERO) file in this Form 6-K?

Ero Copper Corp. filed a Form 6-K as a foreign private issuer, mainly to furnish a press release dated September 18, 2025 as Exhibit 99.1 and make it part of existing registration statements.

What is included as Exhibit 99.1 in Ero Copper (ERO)’s Form 6-K?

Exhibit 99.1 is a press release dated September 18, 2025. This press release is attached to the Form 6-K and is also incorporated by reference into the company’s Form S-8 and Form F-10 registrations.

How does this Form 6-K affect Ero Copper’s (ERO) registration statements?

The Form 6-K incorporates the September 18, 2025 press release as an additional exhibit to Ero Copper’s Form S-8 and Form F-10 registration statements, extending those filings to include the information in Exhibit 99.1.

Which annual report form does Ero Copper Corp. (ERO) use?

Ero Copper Corp. indicates it files its annual reports under cover of Form 40-F rather than Form 20-F, confirming its reporting framework as a foreign private issuer under Canadian-style disclosure rules.

Who signed the September 2025 Form 6-K for Ero Copper (ERO)?

The Form 6-K was signed on behalf of Ero Copper Corp. by Deepk Hundal, who is identified as Executive Vice President, General Counsel and Corporate Secretary in the signature block dated September 18, 2025.