Participation notification by BlackRock Inc.
Brussels, Belgium - December 20, 2023 - 8:30 CET
According to Belgian transparency legislation (Law of May 2, 2007), BlackRock Inc. (50 Hudson Yards, New York, NY, 10001, U.S.A.) recently sent to Syensqo the
following transparency notification indicating that it crossed the threshold of 3%. Here is a summary of the move:
+----------------------+------------------------+------------------------+-----+
| | | Equivalent financial | | | Date on which the |Voting rights after the | instruments after the | | |threshold was crossed | transaction | transaction |Total| +----------------------+------------------------+------------------------+-----+
| December 11, 2023 | 3.29 | 0.85% |4.14%| +----------------------+------------------------+------------------------+-----+
The notification, dated December 14, 2023, contains the following information:

  * Reason for the notification: Holding of voting securities upon first
    admission to trading
  * Notified by: BlackRock Inc. : A parent undertaking or a controlling person
  * Date on which the threshold is crossed: December 11, 2023
  * Threshold of direct voting rights crossed: 3% upwards
  * Denominator: 105,876,417

* Additional information: The disclosure obligation arose due to voting rights

    attached to shares for BlackRock, Inc. going above 3%. Additionally, total
    holdings for BlackRock, Inc. went above 3%.

Transparency notifications and the full chain of controlled undertakings through
which the holding is effectively held is available on the Investor Relations
Section (https://www.syensqo.com/en/investors/regulated-information) of
Syensqo's website.
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