Asseco Poland S.A.

Major Shareholding Notification • Jul 8, 2025

TSS Europe B.V. Atoomweg 50 3542AB Utrecht Holandia | The Netherlands

Komisja Nadzoru Finansowego

XO3LĊNQD 00-549 Warszawa Polska | Poland ]DZLDGRPLHQLH SU]HND]DQH ]D SRPRFą V\VWHPX WHOHLQIRUPDW\F]QHJR.1) | (notification submitted using the KNF's online system)

Asseco Poland S.A.

ul. Olchowa 14 35-233 Rzeszów Polska | Poland

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

Acting on behalf of TSS Europe B.V. with its register office in Utrecht, The Netherlands ("TSS Europe"), based on Article 69(1)(1) 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 registration of the merger between <XNRQ1LHELHVNL.DSLWDO%9ZLWKLWV UHJLVWHUHG office in Utrecht, The Netherlands ("Yukon") as a non-surviving entity and TSS Europe as a surviving entity, on the basis of which all the assets RI<XNRQZHUHWUDQVIHUUHGWR766(XURSHDQGDVD consequence, the loss of legal personality by <XNRQLQDFFRUGDQFHZLWKWKHUHOHYDQWSURYLVLRQV of Dutch law, TSS Europe directly acquired 8,300,029 (eight million three hundred thousand twenty nine) shares in Asseco Poland S.A. with its registered office in Rzeszów ("Asseco Poland", the "Company") corresponding to 9.99% of the share capital of the Company, 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 the Company, which VDP\P EH]SRĞUHGQLR SU]HNURF]\áa SUyJ 5% RJyOQHMOLF]E\JáRVyZZ6SyáFH

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corresponds to 9.99% of the total number of votes, and has thus directly exceeded the threshold of 5% of the total number of votes in the Company.

Prior to 3 July <XNRQ V GLUHFW Gominant entity was TSS Europe holding 100% of shares in WKHVKDUHFDSLWDORI<XNRQ

The indirect shareholding of the shares in Asseco Poland by dominant entities of TSS Europe, i.e. (i) Constellation Software Inc. with its registered office in Toronto, Canada, (ii) Topicus.com Inc. with its registered office in Toronto, Canada, and (iii) Topicus.com Coöperatief U.A. with its registered office in Utrecht, the Netherlands, has not changed.

1. Date and type of event which led to a change in the share in the total vote which is the subject of the notification

The acquisition of the above-mentioned shares in Asseco Poland WRRNSODFH on 3 July 2025 as a result of the registration of the PHUJHUEHWZHHQ<XNRQDV a non-surviving entity and TSS Europe as a surviving entity (the "Merger").

2. Number of shares held prior to the change and their percentage share in the Company's share capital, and the number of votes attached to these shares and their percentage share in the total vote

Prior 3 July 2025, i.e. prior the Merger, TSS Europe did not hold directly any shares in the Company.

Prior 3 July 2025, i.e. prior the Merger, TSS Europe held indirectly 8,300,029 (eight million three hundred thousand twenty nine) shares in Asseco Poland corresponding to 9.99% of the share capital of the Company, 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 the Company, which corresponded to 9.99% of the total number of votes.

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

Therefore, as at 3 July 2025, as the result of the Merger, TSS Europe directly holds:

8,300,029 (eight million three hundred thousand twenty nine) shares in Asseco Poland corresponding to 9.99% of the share capital of the Company, 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 the Company, which corresponds to 9.99% of the total number of votes.

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

The subsidiaries of TSS Europe do not hold or did not hold directly or indirectly any shares in Asseco Poland (subject to <XNRQEHIRUH-XO\

TSS Europe is not or was not a party to the agreements referred to in Art. 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. TSS Europe does not hold or held the financial instruments referred to in Art. 69b of the Act.

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

W imieniu TSS Europe:

On behalf of TSS Europe:

Podpisany elektronicznie przez Marcin Waszyński 07.07.2025 18:15:17 +02′00″

Marcin Waszyński

Pełnomocnik | Attorney-in-fact