Ero Copper 2024 Sustainability Report added to S-8 and F-10

Rhea-AI Filing Summary

Ero Copper Corp. furnished a Form 6-K announcing Exhibit 99.1, the Ero Copper 2024 Sustainability Report. The exhibit is incorporated by reference into the company’s Form S-8 (File No. 333-264821) and Form F-10 (File No. 333-274097). The filing also notes the company files annual reports under cover of Form 40-F.

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 October 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 an 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: October 10, 2025	By:	/s/ Deepk Hundal
		Name: Deepk Hundal
		Title: Executive Vice President, General Counsel and Corporate Secretary

EXHIBIT INDEX

Exhibit Number	Description
99.1	Ero Copper 2024 Sustainability Report

FAQ

What did ERO file on Form 6-K?

Ero Copper furnished Exhibit 99.1, the 2024 Sustainability Report, via Form 6-K.

How will the 2024 Sustainability Report be used?

It is incorporated by reference into Ero Copper’s Form S-8 (File No. 333-264821) and Form F-10 (File No. 333-274097).

What is Exhibit 99.1 in ERO’s filing?

Exhibit 99.1 is the Ero Copper 2024 Sustainability Report.

Which annual report form does ERO use?

The filing indicates Ero Copper files annual reports under Form 40-F.

Does this 6-K announce a financing or earnings update?

No. It furnishes the sustainability report and references its use in S-8 and F-10 registrations.

What is ERO’s SEC file number?

The Commission File Number shown is 001-40459.