Participation notification by BlackRock Inc.
Brussels, Belgium - June 21, 2024 - 8:30 CEST
According to Belgian transparency legislation (Law of May 2, 2007), BlackRock Inc. (12 Throgmorton Avenue, London EC2N 2DL, UK) recently sent Syensqo the following transparency notifications indicating that it crossed the threshold of
3%. Here is the summary of the moves:
+----------------------+------------------------+------------------------+-----+
| | | Equivalent financial | | | Date on which the |Voting rights after the | instruments after the | | |threshold was crossed | transaction | transaction |Total| +----------------------+------------------------+------------------------+-----+
| June 14, 2024 | 3.02% | 0.67% |3.69%| +----------------------+------------------------+------------------------+-----+
The latest notification, dated June 18, 2024, contains the following information:
* Reason for the notification: Acquisition or disposal of voting securities or

    voting rights
  * Notified by: BlackRock Inc : A parent undertaking or a controlling person
  * Date on which the threshold is crossed: June 14, 2024
  * 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%.
About Syensqo
Syensqo is a science company developing groundbreaking solutions that enhance the way we live, work, travel and play. Inspired by the scientific councils which Ernest Solvay initiated in 1911, we bring great minds together to push the
limits of science and innovation for the benefit of our customers, with a diverse, global team of more than 13,000 associates.
Our solutions contribute to safer, cleaner, and more sustainable products found in homes, food and consumer goods, planes, cars, batteries, smart devices and health care applications. Our innovation power enables us to deliver on the ambition of a circular economy and explore breakthrough technologies that advance humanity.
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 Investors & Analysts                    Media
 Sherief Bakr                            Nathalie van Ypersele
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 Bisser Alexandrov                       Perrine Marchal
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 Imtiyaz Lokhandwala                     Laetitia Schreiber
 +1 609 860 3959                         +32 487 74 38 07
 investor.relations@syensqo.com          media.relations@syensqo.com

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