Sopra Steria - 2021 Combined General meeting

1 2021 COMBINED GENERAL MEETING OF SOPRA STERIA Important notice

Important notice Given the current circumstances relating to the Covid-19 pandemic and the efforts to combat its spread, the Chairman of the Board of Directors of Sopra Steria Group has made use of the authority delegated to him by the Board of Directors and has decided on Thursday, 1 April 2021 that the Combined General Meeting of 26 May 2021 will be held exceptionally in closed session, without shareholders and other persons with the right to attend being physically present.

This decision was taken pursuant to the provisions of Decree 2021-255 of 9 March 2021, extending the period of application of the provisions of Order 2020-321 of 25 March 2020, amended by Order 2020-1497 of 2 December 2020, Decree 2020-418 of 10 April 2020 and Decree 2020-639 of 25 May 2020.

At the date of this publication, measures implemented by the French government to limit or prohibit travel or mass gatherings for public health reasons preclude in-person attendance at the General Meeting.

No admission cards will be issued. Shareholders are invited to vote or to appoint the Chairman of the General Meeting or another person as their proxy PRIOR TO the General Meeting either: (i) by electronic means or (ii) by post, using the remote voting form.

The Company recommends that shareholders make use of the Votaccess platform whenever possible.

Sopra GMT and the Sopra Steria Actions company mutual fund (FCPE), both shareholders of the Company, have been named as scrutineers.

The General Meeting will be live streamed on the Company’s website (https://www.soprasteria.com/investors) unless technical issues prevent or seriously disrupt the live stream. Details concerning this live stream will be announced as soon as possible. The recorded video of the General Meeting will remain available on the Company’s website (https://www.soprasteria.com/investors) for the period required by regulations in force. Apart from the application of the legal framework pertaining to written questions submitted in advance, shareholders will also have the opportunity to ask questions during the General Meeting. To be able to take part in discussions and ask questions during the General Meeting, shareholders are asked to follow the instructions provided in Chapter 1, Section 7 “ How to take part in discussions and ask questions during the General Meeting ” of this publication. Meetings” section of the Company’s website (https://www.soprasteria.com/investors/investors-relations-shareholders/shareholders-meetings) for updates and details to be made available after the publication of this convening notice, and in particular any possible developments affecting the procedures for taking part in the General Meeting due to new public health measures or legal decisions as well as technical constraints. Shareholders are invited to regularly check the “Shareholders’

This year, we strongly urge you to register: by clicking on “ Take part in discussions ” on Votaccess and following the instructions, or p by returning the equivalent reply form by post or email. p The reply form will allow us to contact you and open the floor to you during the General Meeting.

3

SOPRA STERIA NOTICE OF MEETING 2021