Asseco Poland S.A.

Major Shareholding Notification • Oct 2, 2025

1. TSS Europe B.V. ("TSS Europe")

Atoomweg 50 3542AB Utrecht Holandia | The Netherlands

2. Topicus.com Coöperatief U.A. ("Topicus Coöp")

Atoomweg 50 3542AB Utrecht Holandia | The Netherlands

3. Topicus.com Inc. ("Topicus")

20 Adelaide St. E., Suite 1200 Toronto Ontario Kanada | Canada

4. Constellation Software Inc. ("CSI")

20 Adelaide St. E., Suite 1200 Toronto Ontario Kanada | Canada

Komisja Nadzoru Finansowego

00-549 Warszawa | Poland | (notification submitted using KNF's online system) Asseco Poland S.A. ("Asseco Poland") Acting on behalf of (i) TSS Europe, (ii) Topicus Coöp, (iii) Topicus, and (iv) CSI (jointly the "Notifying

ul. Olchowa 14 35-233 Rzeszów | Poland

(iii Topicus, oraz (iv CSI "Podmioty " , 5 , "Ustawa" , ( Asseco Poland %

Zawiadomienie o zmianie stanu posiadania Notification of a change to the shareholding

: TSS Europe, (ii Topicus Coöp Entities"), based on Article 69(1)(1), Article 69(2) and Article 69a(1)(3) of the Act on Public Offering, Conditions Governing the Introduction of Financial Instruments to Organised Trading, and Public Companies dated 29 July 2005 (consolidated text: Journal of Laws of 2025, item 592 as amended, the "Act") I hereby notify you that as a result of the settlement of the over the counter transaction for the acquisition of Asseco Poland's shares, TSS Europe directly acquired 12,318,863 (twelve million three hundred eighteen thousand eight hundred sixty-three) shares in Asseco Poland corresponding to 14.84% of the share capital of Asseco Poland, in total conferring the

( odpowiada % i a 20%

% Poland, % Poland 20

Europe Topicus Coöp TSS Europe

Topicus Topicus Coöp

Topicus CSI, oraz Topicus

1. 1. Date and type of event which led to a change

2025 r

right to exercise 12,318,863 (twelve million three hundred eighteen thousand eight hundred sixty-three) of the votes at the general meeting of Asseco Poland, which corresponds to 14.84% of the total number of votes, and has thus directly acquired at least 2% of the total number of votes in Asseco Poland and exceeded the threshold of 20% of the total number of votes in Asseco Poland.

Thereby the remaining Notifying Entities (other than TSS Europe) indirectly acquired 12,318,863 (twelve million three hundred eighteen thousand eight hundred sixty-three) shares in Asseco Poland corresponding to 14.84% of the share capital of Asseco Poland, in total conferring the right to exercise 12,318,863 (twelve million three hundred eighteen thousand eight hundred sixty-three) of the votes at the general meeting of Asseco Poland, which corresponds to 14.84% of the total number of votes, and has thus indirectly acquired at least 2% of the total number of votes in Asseco Poland and exceeded the threshold of 20% of the total number of votes in Asseco Poland.

TSS TSS Europe's direct dominant entity is Topicus Coöp, holding 100% of shares in the share capital of TSS Europe.

Topicus Coöp The dominant entity towards Topicus Coöp is Topicus, holding 64.18% of shares in the share capital of Topicus Coöp.

% The dominant entity towards Topicus is CSI, a public 51.52% of the subordinate voting shares and 100% of the super voting shares in the share capital of Topicus and as a result is entitled to exercise the majority of votes.

CSI CSI does not have a dominant entity within the meaning of the Act.

in the share in the total vote which is the subject of the notification

(" " The acquisition of the above-mentioned shares in Asseco Poland 1 October 2025 as a result of the settlement of the transaction for the acquisition of Asseco Poland's shares (the "Transaction").

1. Asseco Poland

2. Asseco Poland

2025

( Poland % , ( % , w i

1. Asseco Poland oraz lit. c Ustawy

,

1. Number of shares held prior to the change and their percentage share in Asseco Poland's share capital, and the number of votes attached to these shares and their percentage share in the total vote Prior 1 October 2025, i.e. prior the Transaction, TSS

: Europe directly held, and other Notifying Entities indirectly held:

8,300,029 (eight million three hundred thousand twenty nine) shares in Asseco Poland corresponding to 9.99% of the share capital of Asseco Poland, in total conferring the right to exercise 8,300,029 (eight million three hundred thousand twenty nine) of the votes at the general meeting of Asseco Poland, which corresponding to 9.99% of the total number of votes. , Therefore, as at 1 October 2025, as the result of the 20,618,892 (twenty million six hundred eighteen

1. Number of shares currently held and their percentage share in Asseco Poland's share capital, and the number of votes attached to these shares and their percentage share in the total vote

Transaction, TSS Europe directly holds, and other Notifying Entities indirectly hold:

thousand eight hundred ninety-two) shares in Asseco Poland corresponding to 24.84% of the share capital of Asseco Poland, in total conferring the right to exercise 20,618,892 (twenty million six hundred eighteen thousand eight hundred ninety-two) of the votes at the general meeting of Asseco Poland, which corresponds to 24.84% of the total number of votes, and has thus TSS Europe directly and the remaining Notifying Entities indirectly acquired at least 2% of the total number of votes in Asseco Poland and exceeded the threshold of 20% of the total number of votes in Asseco Poland.

1. Information on the subsidiaries of the shareholder making the notification, which hold shares in Asseco Poland and third parties referred to in Art. 87(1)(3)(c) of the Act

, The subsidiaries of TSS Europe and subsidiaries of the Notifying Entities, other than covered by this notification, do not hold or did not hold directly or indirectly any shares in Asseco Poland.

5. –

posiada,

, None of the Notifying Entities is or was a party to the

agreements referred to in Article 87(1)(3)(c) of the Act. 5. Information on financial instruments referred to in Art. 69b of the Act pursuant to Art. 69(4)(7-9) of the Act

Not applicable. None of the Notifying Entities holds or held the financial instruments referred to in Article 69b of the Act.

The Polish language version constitutes an unofficial Polish translation, in the event of any discrepancy, the English version shall prevail.

On behalf of the Notifying Entities:

__________________________

| Attorney-in-fact