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Investor Presentaiton

Additionally, on December 13, 2021, the Board of Directors of subsidiary VCSA approved the distribution of dividends in the amount of R$ 535, from retained earnings reserves, which were paid to shareholders in February 2022. (i) Acquisition of shares in Tinka Resources Limited (Tinka) - Nexa On March 17, 2021, the subsidiary Nexa acquired 29,895,754 common shares of Tinka, a company involved in the acquisition and exploration of minerals from properties located in Peru, in a private transaction at a price of Canadian Dollars (CAD) 0.26 per share. As a result, Nexa owns 8.8% of the issued and outstanding common shares of Tinka, which owns 100% of the Ayawilca zinc-silver project in Peru. On April 16, 2021, the subsidiary Nexa acquired another 654,758 common shares of Tinka. As a result, after the operations carried out in March and April 2021, the subsidiary Nexa holds a total of approximately 9% of the issued and outstanding common shares of Tinka. (j) Assets Retirement Obligation (ARO) remeasurement - Companhia Brasileira de Alumínio (CBA) In March 2021, the subsidiary CBA updated its environmental obligations for the demobilization of assets, amounting to R$ 73 for the Niquelândia unit, and concomitantly constituted impairment on this increase in fixed assets. (k) Temporary suspension of the Extreme North Mine of Vazante - Nexa In March 2021, during a regular inspection of the Extreme North mine in Vazante, operated by the subsidiary Nexa, above-normal ground displace- ments were identified in the area around the mine's main access and escape route. The Extreme North mine requires aquifer dehydration for its opera- tions, which leads to depressurization and can cause local disturbances in the rock mass surrounding the mine. As a preventive measure, activities in this area were temporarily suspended. The subsidiary Nexa, supported by external experts, began a detailed analy- sis of the geological and geotechnical conditions to ensure the safety of its workers and the resumption of operating activities at the Extreme North mine. In August 2021, the mine's main access and escape route and the deve- lopment of new mine areas were re-established. Thus, production at the Extreme North mine is expected to resume during the first quarter of 2022. (I) GSF (Generation Scale Factor) - VCNNE, CBA, VGE and Nexa As disclosed in the consolidated financial statements for the year ended December 31, 2020 (Note 1.1 (t)), the Company follows the regulatory process of Law No. 14.052, published on September 9, 2020, which es- tablishes new conditions for the renegotiation of the hydrological risk of electricity generation, providing for the compensation of generators by extending the term of concession of their grants due to the occurrence of non-hydrological risks that negatively influenced the GSF after 2012. In the first quarter of 2021, the indirect subsidiary VCNNE recognized cre- dit with a gross amount of R$ 58 and deferred taxes of R$ 20 related to the renegotiation of the hydrological risk of electricity generation, by extending the concession period for the use of the public asset of the Pedra do Cavalo plant in 7 years. The subsidiary CBA also recognized this credit, on March 31, 2021, with a total amount of R$ 142 and deferred taxes of R$ 48, by extending the concession period for the use of the public assets listed below: Power Plant UHE Sobragi UHE Piraju Dead line of extension (in days) Value 567 34 1,783 37 1,941 20 UHE Salto do Rio Verdinho 2,555 51 UHE Ourinhos = 113
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