Solvay S.A.: TRANSPARENCY DECLARATION - PARTICIPATION NOTIFICATION BY SOLVAC SA .

Brussels, Thursday  September  21, 2017,  8h00  --- According to  the  Belgian 
transparency legislation in force (Law of May 2, 2007), SOLVAC SA, located  at 
Rue des Champs Elysées 43  - 1050 Brussels -  Belgium, has notified Solvay  SA 
that:

  * On September 12, SSOM crossed downwards the statutory declaration
    threshold of 3% of the existing voting rights emitted by Solvay SA,
    whereby the combined holding by Solvac and SSOM reached 33.70% of the
    existing voting rights.

SOLVAC SA  is  presumed to  exercise  de facto  control  over Solvay  SA,  and 
therefore SSOM, on the basis  of Article 5, §3,  2nd paragraph of the  Belgian 
companies code.

The declaration by SOLVAC SA is published in the Investor Relations Section of
Solvay's website.

For the complete press release, please read the enclosed PDF.

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Solvay  is  a  multi-specialty  chemical  company,  committed  to   developing 
chemistry  that  addresses  key  societal  challenges.  Solvay  innovates  and 
partners with  customers  in diverse  global  end markets.  Its  products  and 
solutions are used in planes, cars,  smart and medical devices, batteries,  in 
mineral  and  oil   extraction,  among  many   other  applications   promoting 
sustainability. Its  lightweighting materials  enhance cleaner  mobility,  its 
formulations optimize  the  use of  resources  and its  performance  chemicals 
improve air and water quality. Solvay is headquartered in Brussels with around
27,000 employees in 58 countries. Net sales were € 10.9 billion in 2016,  with 
90% from activities where Solvay ranks among the world's top 3 leaders. Solvay
SA (SOLB.BE) is listed  on Euronext Brussels  and Paris  (Bloomberg: SOLB.BB - 
Reuters: SOLB.BR) and  in the  United  States its  shares (SOLVY)  are  traded 
through a level-1 ADR program.

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To read the complete release in PDF

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the content, accuracy and originality of the information contained therein.
Source: Solvay S.A. via Globenewswire
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