Reference Form

03/23/2012 - Annex 9-1-II and Item 10 of Reference Form, Meeting of the Board 25/april/2012

ITR - Quarterly Financial Information

04/26/2012 - 1st Quarter of 2012 - IFRS

DFP - Standard Financial Statements BR GAAP

02/17/2012 - 4Q11 Management Report

Results Release

04/26/2012 - Results Release 1st Quarter 2012

Presentations

04/26/2012 - 1st Quarter 2012 Results

Conference Calls

04/26/2012 - 1st Quarter 2012 Results

Announcements and Relevant Facts

05/04/2012 - Closure of the Subscription and Beginning of Debentures Trading in Secondary Market 03/29/2012 - First Private Issue of Debentures - Closing Period of the 1st Apportionment of surplus of debentures and Beginning of the 2nd Apportionment 03/19/2012 - First Private Issue of Debentures - Closing Period of Exercise of Right of First Refusal 03/09/2012 - Unit Price for subscription of Debentures 03/01/2012 - Relationship with Independent Auditors 02/17/2012 - Disclosure of the 4Q11 Results 02/16/2012 - Material Fact - Renewal of approval for purchase of treasury shares 02/16/2012 - Material Fact - Payment of Interest on Own Capital 02/16/2012 - NOTICE TO SHAREHOLDERS 02/08/2012 - NOTICE TO SHAREHOLDERS 01/23/2012 - MATERIAL FACT: Private Issuance of Debentures Convertible into Shares

Meeting of the Board of Directors

04/25/2012 - Summary Minutes of the Board of Directors 04/10/2012 - Summary Minutes of the Meeting of the Board of Directors April 9, 2012 02/16/2012 - Minutes of the Executive Board Meeting 02/16/2012 - Minutes of the Board of Directors 02/16/2012 - Minutes of the Board of Directors 01/23/2012 - ATA MINUTES OF THE BOARD OF DIRECTORS HELD ON 23 JANUARY 2012,

General Meetings

04/25/2012 - Ordinary and Extraordinary General Meeting of Shareholders 04/25/2012 - Summary minutes of the Extraordinary General Assembly April 25, 2012 04/10/2012 - Call Notice - Ordinary and Extraordinary General Assembly, to be held on April 25, 2012 02/08/2012 - Summary minutes of the Extraordinary General Assembly February 8, 2012 01/24/2012 - CALL NOTICE: 08-Feb-2012 EXTRAORDINARY GENERAL MEETING 01/23/2012 - Manual of General Extraordinary Assembly 08/Feb/2012

Event Calendar

03/16/2012 - Calendar of Corporate Events