| Company | Role | Joined | Share Capital |
|---|---|---|---|
| PETRA ENERGIA PARTICIPACOES LTDA | Sócio (22) | 11/10/2014 | R$ 1,300,000.00 |
| PETRA ENERGIA SAO FRANCISCO LTDA | Sócio (22) | 6/22/2012 | R$ 1,000,000.00 |
| PETRA ENERGIA SOLIMOES LTDA. | Sócio (22) | 6/17/2011 | R$ 3,000,000.00 |
| STR ENERGIA LTDA | Sócio (22) | 5/13/2011 | R$ 3,000,000.00 |