Nexa Announces Filing of Annual Report on Form 20-F for the Fiscal Year Ended 2023, Publication of Mining Report and Technical Report Summary

LUXEMBOURG / ACCESSWIRE / March 27, 2024 / Nexa Resources S.A. ("Nexa Resources" or "Nexa" or the "Company") (NYSE:NEXA) announces that it has filed its annual report on Form 20-F for the fiscal year ended December 31, 2023, with the U.S. Securities and Exchange Commission (www.sec.gov/edgar) and on SEDAR in Canada (www.sedarplus.ca).

The annual report on Form 20-F is also available on Nexa's Investor Relations website accessible at: ir.nexaresources.com. The Company's shareholders may receive a hard copy of Nexa's complete audited financial statements, free of charge, upon request.

Nexa also announces that it has filed its updated report on Mineral Reserves and Mineral Resources estimates as of December 31, 2023 ("Mining report" or "MRMR report"), prepared in accordance with the Canadian National Instrument 43-101 ("NI 43-101"), on SEDAR.

Additionally, Nexa has published a Technical Report summary for the Cerro Pasco Complex Integration, all prepared in accordance with Subpart of Regulation S-K 1300.

About Nexa

Nexa is a large-scale, low-cost integrated zinc producer with over 65 years of experience developing and operating mining and smelting assets in Latin America. Nexa currently owns and operates five long-life mines - three located in the Central Andes of Peru and two located in the state of Minas Gerais in Brazil - and it is ramping up Aripuanã, its sixth mine in Mato Grosso, Brazil. Nexa also currently owns and operates three smelters, two located in Minas Gerais, Brazil and one in Peru, Cajamarquilla, which is the largest smelter in the Americas.

Nexa was among the top five producers of mined zinc globally in 2023 and one of the top five metallic zinc producers worldwide in 2023, according to Wood Mackenzie.

Cautionary Statement on Mineral Reserve and Mineral Resource Estimates

All Mineral Reserve and Mineral Resource estimates of the Company disclosed or referenced in this news release have been prepared in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") Definition Standards on Mineral Resources and Mineral Reserves dated May 10, 2014 ("2014 CIM Definition Standards"), whose definitions are incorporated by reference in National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101"), for the metals indicated per mine and project.