Sinch

Declaration of Voting Results & Voting Rights Announcements • Nov 28, 2025

Change in the number of shares and votes in Sinch

Sinch AB (publ) ("Sinch") today announces that the number of shares and votes in Sinch amounts to 845,578,116.

The change in the number of shares and votes is a result of 642,149 new shares issued in November upon exercise of stock options/warrants within the frame of incentive programs.

For further information, please contact

Mia Nordlander Head of Investor Relations & Sustainability Mobile: +46 73 511 53 95

E-mail: mia.nordlander@sinch.com

About Sinch

Sinch is pioneering the way the world communicates. More than 190,000 businesses – including many of the world's largest tech companies – rely on Sinch's Customer Communications Cloud to improve customer experience through mobile messaging, voice and email. Sinch has been profitable and fastgrowing since it was founded in 2008. It is headquartered in Stockholm, Sweden, with shares traded at NASDAQ Stockholm: XSTO:SINCH. Learn more at sinch.com.

This information is information that Sinch AB (publ) is obliged to make public pursuant to the Financial Instruments Trading Act (1991:980). The information was submitted for publication, through the agency of the contact person set out above, at 15:00 CET on 28 November 2025.