PROCEDURES IN INDICES DUE TO THE INCORPORATION EVENT OF ENAUTA PARTICIPACOES S.A. BY 3R PETROLEUM OLEO E GAS S.A.

In reference to the 013/2024-VNC Circular Letter, we hereby inform you that, due to ENAUTA PART (ENAT3) common shares incorporation by 3R PETROLEUM (RRRP3), according to item 3.5 of the Manual for B3 Indices, B3 will adopt the adjustment procedures described below as of August 1, 2024:

1. In the Brazil Broad-Based Index (IBrA), Brazil 100 Index (IBXX), Corporate Governance Trade Index (IGCT), Special Corporate Governance Stock Index (IGCX), Novo Mercado Corporate Governance Equity Index (IGNM), Special Tag-Along Stock Index (ITAG) and SmallCap Index (SMLL), ENAT3 equities will be excluded after the close of trading on July 31, 2024, at the price of the last transaction executed at B3. The respective theoretical quantity, divided by the exchange factor (0.805013), will be incremented to the theoretical quantity of RRRP3.

In this way, for the IBRA, IBXX, IGCT, IGNM, ITAG and SMLL indices, the final quantity of RRRP3 will be 450,375,227 shares; and for the IGCX index it will be 900,750,454 shares, respecting the methodology.

There will be no adjustment to the reduction factors as a result of the conversion. In this way there may be a difference between the closing values of these indices on July 31, 2024 and their pre-opening values for August 1, 2024.

2. For the Bovespa Index (Ibovespa) (IBOV), Brazil 50 Index (IBXL), Valor BM&FBOVESPA Index (IVBX) and GPTW Index (IGPTW B3), the theoretical quantity of RRRP3 will not change, as described in item 3.5, subparagraph IV of the Concepts and Practices Manual for B3 Indices, available at www.b3.com.br/en_us, Market data and Indices, Indices, Broad Indices, Bovespa Index (Ibovespa), being adjusted only in the next periodical rebalancing.

3. In the Corporate Sustainability Index (ISE), ENAT3 equities will be excluded after the close of trading on July 31, 2024, at the price of the last transaction executed at B3, with the due adjustment to the reduction factor.

As the incorporating company does not meet the eligibility criteria for this index, it will not be included therein, in accordance with its methodology.

For periodical rebalancing purposes, the processing of historical data will be executed with the migration of 100% of the trading history of ENAT3 to RRRP3.

The reduction factors of all the above indices may be adjusted in the case of corporate actions that occur with the other assets that comprise the portfolio.