The rebound of the world economy sent Brent crude prices rising to an average of $68.83 in the second quarter, up 135 percent from the same period in 2020
The move would be the first under the management of General Joaquim Silva e Luna, who replaced Roberto Castello Branco as the company's top executive after the government apparently disagreed with the state-run company's fuel pricing policy.
In a note on Friday, brokerage Ativa Investimentos said its model indicated a potential 13% rise in gasoline prices, driven by the increasing international oil prices.
President Jair Bolsonaro announced the 71-year-old Luna would take the helm of Petroleo Brasileiro SA, as the firm is formally known, in a Facebook post in February.
Petrobras shares fell sharply when Luna's predecessor, Roberto Castello Branco, was forced out after the group hiked domestic fuel prices several times in February, angering Bolsonaro.
Petrobras also said in a securities filing that minority shareholders proposed a new candidate for the board, banker Jose Joao Abdalla Filho, owner of Banco Classico and energy and agribusiness companies. His name was proposed by investment funds holding Petrobras shares.
In a securities filing, Petrobras said it asked the ministry about information that "should have been released to the market." The ministry has yet to respond, Petrobras said.
Bolsonaro's remarks on Wednesday helped wipe out gains in Petrobras' preferred and ordinary shares and they closed that session virtually flat. The preferred shares closed 0.08% down. The selling continued on Thursday.
The fear is that, with Lula's specter hanging over his re-election, Bolsonaro could act even more erratically and take populist actions that compromise Brazil's fragile fiscal situation.
With US Treasury yields stabilizing and Wall Street's stock indexes opening higher, Sao Paulo's Bovespa stock index rose 0.2%, after sinking 4% on Monday.
Shares in Petroleo Brasileiro SA, as the company is officially known, plunged 22% on Monday, wiping out 71 billion reais ($13 billion) in market value.
*President Jair Bolsonaro earlier said he had decided to appoint former Defense Minister Joaquim Silva e Luna as the state-controlled oil company’s CEO.
Bolsonaro said he intended to present a bill to try to make state taxes on fuel more predictable by either closely reflecting refinery prices or by fixing them.