02/08/2012
Third Apportionment of Unsubscribed Warrants of Preferred Shares

01/20/2012
Second Apportionment of Unsubscribed Warrants of Preferred Shares

03/26/2012
Disclosure of Consolidated Financial Report in IFRS

03/05/2012
Clarification on external auditors relationship

02/28/2012
Migration to Level 2 Corporate Governance Listing Segment of BM&FBovespa

02/15/2012
Homologation of Preferred Share Warrants