Participation Notification by Blackrock Inc.

Participation notification by Blackrock Inc.

Brussels, July 20, 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 the following transparency notification indicating that it crossed the threshold of 3%. Here is a summary of the move:

Date on which the threshold was crossed	Voting rights after the transaction	Equivalent financial instruments after the transaction	Total
July 14, 2020	2.87%	0.20%	3.07%

The notification, dated July 15, 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: July 14, 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%.

The full chain of controlled undertakings through which the holding is effectively held is available on https://www.solvay.com/en/investors/corporate-governance/transparency-declarations/all-transparency-declarations

Transparency notifications are published in the Investor Relations Section of Solvay's website.

Attachments

• Solvay_2020-07-14_Issuer_signed

• 20200720_transparency declaration Blackrock-ENG