CANCOM SE: Release of a capital market information

Share buyback / 1st Interim Report – Announcement pursuant to Art. 5 para. 1 lit. b) and para. 3 of Regulation (EU) No. 596/2014 in conjunction with Art. 2 para. 2 and 3 of Delegated Regulation (EU) No. 2016/1052

In the period from 07 September 2026 up to and including 11 September 2026, CANCOM SE acquired a total of 106,945 treasury shares as part of the share buyback program, of which the start date 07 September 2026 was announced in the ad hoc announcement of 01 September 2026 and the announcement of 02 September 2026 in accordance with Article 5 para. 1 a) of Regulation (EU) No. 596/2014 in conjunction with Article 2 para. 1 of Delegated Regulation (EU) No. 2016/1052 and Article 2 para.1 of Delegated Regulation (EU) No. 2016/1052.

The shares were acquired as follows:

Date	Aggregated volume (number of shares)	Volume-weighted average price in XETRA trading, commercially rounded to four decimal places (in EUR)
07.09.2026	22,760	22.2676
08.09.2026	23,514	22.2729
09.09.2026	21,096	22.1980
10.09.2026	20,114	22.1501
11.09.2026	19,461	22.1838

This brings the total volume of treasury shares repurchased by CANCOM SE under the share buyback program since 07 September 2026 to 106,945.

Further information on the transactions pursuant to Art. 5 para.1 lit. b) and para. 3 of Regulation (EU) No. 596/2014 in conjunction with. Art. 2 para. 2 and 3 of Delegated Regulation (EU) No. 2016/1052 is published on the internet at https://investors.cancom.com/share-buyback-2026/.

The treasury shares were acquired by a credit institution commissioned by CANCOM SE exclusively via the stock exchange in electronic trading on the Frankfurt Stock Exchange (XETRA).

Munich, Germany, 14 September 2026

CANCOM SE

The Executive Board