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Monday, October 12, 2026 Admin

ERO.TO ·

Ero Copper to Release Third Quarter 2026

Financials

TSX: ERO NYSE: ERO

October 1, 2026 Ero Copper to Release Third Quarter 2026 Operating and Financial Results on November 2, 2026

Vancouver, British Columbia – Ero Copper Corp. (TSX: ERO, NYSE: ERO) ("Ero" or the “Company”) will publish its third quarter 2026 operating and financial results on Monday, November 2, 2026, after market close. The Company will host a conference call to discuss

the results on Tuesday, November 3, 2026 at 10:30 a.m. Eastern Time. A results presentation
will be available for download via the webcast link and in the Presentations section of the
Company's website on the day of the conference call.

CONFERENCE CALL DETAILS

Date: Tuesday, November 3, 2026 Time: 10:30 a.m. Eastern Time Canada/USA Toll Free: 1-833-752-3380, International: +1-647-846-2821 Dial In: Please dial in 5-10 minutes prior to the start of the call or pre-register using this link to bypass the live operator queue Webcast: To access the webcast, click here Canada/USA Toll Free: 1-855-669-9658, International: +1-412-317-0088 Replay:

For country-specific dial-in numbers, click here Replay Passcode: 1109122

ABOUT ERO

Ero is a Brazil-focused, growth-oriented mining company with a diversified portfolio of copper and gold assets. Headquartered in Vancouver, B.C., the Company operates two copper mines

  • the Caraíba Operations in Bahia State and the Tucumã Operation in Pará State – as well as

the Xavantina Operations, a producing gold mine in Mato Grosso State. In addition to its operating assets, Ero is advancing the Furnas Copper-Gold Project, located in the mineral-rich Carajás Province in Pará State, through a definitive earn-in agreement with Vale Base Metals to acquire a 60% interest in the project.

Ero’s operating philosophy is grounded in a commitment to safety, operational excellence, and the responsible production of minerals essential for a better tomorrow. The Company’s shares are publicly traded on the Toronto Stock Exchange and the New York Stock Exchange under the symbol “ERO.” Additional information, including technical reports on the Company’s operations and projects, is available on the Company’s website (www.ero.com), SEDAR+ (www.sedarplus.ca), and on EDGAR (www.sec.gov).

1 Ero

TSX: ERO NYSE: ERO

FOR MORE INFORMATION, PLEASE CONTACT

Farooq Hamed, VP, Investor Relations [email protected]

2 Ero