Brussels, January 16, 2013

Regulated information* Press release Disclosure in accordance with the requirements of the Transparency Law

Tessenderlo Group (NYSE Euronext: TESB) discloses information required under article 15, §1 of the
Law of May 2, 2007 regarding the disclosure of important shareholdings in listed companies.

Status as of December 20, 2012:

Total outstanding capital: € 153,702,506.38
Total number of outstanding ordinary shares: 30,662,300
Total number of voting rights (the denominator): 30,662,300
Total number of outstanding warrants: 1,293,469 (each warrant entitles the holder to subscribe
to one new ordinary share)
Notifications:
According to Tessenderlo Chemie NV bylaws, the threshold as from which a shareholding needs to be disclosed has been set at 5%, as well as each multiple of 5%, in either direction. Notifications of important shareholdings to be made according to the Law of May 2, 2007 or Tessenderlo Chemie's bylaws, should be sent to philip.ludwig@tessenderlo.com, as well as to the Belgian Financial Services and Markets Authority (FSMA) at trp.fin@fsma.be.
This information will also be made available on www.tessenderlo.com/investors/information_for_the_shareholder/capital_structure/

Tessenderlo Group is a worldwide specialty company, focused on food, agriculture, water management and on valorizing bio-residuals. The group employs about 7,500 people and is a leader in most of its markets, with a consolidated revenue of 2.1 billion EUR in 2011. Tessenderlo Chemie NV is listed on NYSE Eurolist by Euronext Brussels and is part of Next 150 and BEL Mid indices. Financial News wires: Bloomberg: TESB BB - Reuters: TesBt.BR - Datastream: B:Tes

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Kathleen IWENS Philip LUDWIG