Introdução -- Derivative Lawsuits Under Brazilian Law -- Derivative Lawsuits against managers (directors and officers) (LSA article 159) -- Issues for consideration/Recommendations -- Derivative lawsuit against the controlling shareholder (LSA article 246) -- Cost of the proceedings -- Issues for discussions/Recommendations -- Subsequent control over a derivative suit and settlements -- Mechaninms to reduce the information asymmetry among shareholders, the company, the controlling shareholder and managers -- Collective Arbitration Under Brazilian Law -- Confidentially -- Issues for discussion/Recommendations -- Conclusion