Trisul announces its 3Q11 Results Schedule:

3Q11 Results November 14th, 2011 (After trading hours) Conference Call in English

Date: November 16, 2011

Time: 9 a.m. (US-EST)

12 p.m. (Brasília)

Phone: +1 (412) 317-6776

Access Code: Trisul

Replay: +1 (412) 317-0088

Replay Code: 10006646

Conference Call in Portuguese

Date: November 16, 2011

Time: 8 a.m. (US-EST)

11 a.m. (Brasília)

Phone: +55 (11) 3127-4971

Access Code: Trisul

Replay: +55 (11) 3127-4999

Replay Code: 40941111

IR Contact

Phone.: +55 (11) 3147-0428

E-mail: ri@trisul-sa.com.br

Website: www.trisul-sa.com.br/ir

Slides and Webcast

A slide presentation will be available for viewing and downloading on the IR session of our
website www.trisul-sa.com.br/ir

Quiet Period

In accordance with fair disclosure and corporate governance best practices, TRISUL will respect a Quiet Period beginning on November 2nd , 2011 and will end on the conference call
day.