Participation notification by Blackrock Inc.

Brussels, Wednesday, April 1, 2020, 08h30 CEST --- According to Belgian transparency legislation (Law of May 2, 2007), BlackRock Inc. (55 East 52nd Street, New York, NY, 10055, U.S.A.) recently sent to Solvay different transparency notifications in the last few days indicating that it crossed different times the threshold of 3%. Here is a summary of the different moves:

The latest notification, dated March 30, 2020, contains the following information:

• Reason for the notification: acquisition or disposal of voting securities or voting rights
• Notified by: BlackRock Inc. (55 East 52nd Street, New York, NY, 10055, U.S.A.)
• Date on which the threshold is crossed: March 27, 2020
• Threshold of direct voting rights crossed: 3% upwards
• Denominator: 105,876,416
• Additional information: The disclosure obligation arose due to voting rights attached to shares for BlackRock, Inc. going above 3%.

Declarations by BlackRock Inc. are published in the Investor Relations Section of Solvay's website.

Attachments

• 20200401_transparency declaration Blackrock-ENG
• Solvay_2020-03-25_Issuer_signed
• Solvay_2020-03-27_Issuer_signed