Following the recent transparency declarations that are required for shareholdings exceeding the thresholds of 3 and 5% (and multiples thereof), Solvay's shares are held as follows :

Participation notifications

• Copy of the participation notification of 30 April 2010 [EN]-[FR]-[NL]
• Copy of the participation notification of 26 January 2010 [EN]-[FR]-[NL]
• Copy of the participation notification of 7 January 2010 [EN]-[FR]-[NL]
• Copy of the participation notification of 26 November 2009 [EN]-[FR]-[NL]
• Copy of the participation notification of 11 March 2009 [EN]-[FR]-[NL]
• Copy of the participation notification of 5 March 2009 [EN]-[FR]-[NL]
• Copy of the participation notification of 20 February 2009 [EN]-[FR]-[NL]
• Copy of the participation notification of 26 January 2009 [EN]-[FR]-[NL]
• Copy of the participation notification of 30 September 2008 [EN]-[FR]-[NL]
• Copy of the participation notification of 12 September 2008 [EN]-[FR]-[NL]

With 30% of Solvay’s shares, Solvac is the main shareholder of Solvay. Solvac is a société anonyme established under Belgian law and listed on Euronext Brussels. Its shares, all of which are registered, may be held by physical persons only. The very large majority (around 80%) of its capital is held by members of the families of the founders of Solvay S.A.

3% of Solvay's shares are held by Solvay Stock Option Management BVBA to cover the stock options program of the company (see Solvay Shares).

Solvay launched for a period of one year starting on February 15, 2010 an investment program of maximum 5.1 million of the company's own shares.  The details of this treasury share investment program are published in the Share information section on www.solvay-investors.com.

The remaining shares are held by :

• Individual shareholders who hold shares directly in Solvay S.A. None of these persons, either individually or in concert with others, reaches any 3% transparency declaration threshold.
• European and international institutional shareholders, the number and interest of whom can be measured by the intensity of contacts at the many roadshows, by the regular publication of analysts’ reports and by the level of trading volumes over recent years (an average daily trading volume on Eurronext of 278,000 shares in 2009 and 368,000 in 2008).

The company has been informed that certain individual shareholders have decided to arrange to consult together when questions of particular strategic importance are submitted by the Board of Directors to the Shareholders’ Meeting. Each of these shareholders remains, however, free to vote as he chooses.