EQS-CMS: IONOS Group SE: Release of a capital market information

In the period from 12 January 2026 up to and including 16 January 2026, IONOS Group SE purchased a total of 135,834 treasury shares as part of the share buyback program. The start of the share buyback program was announced on 26 November 2025 in accordance with Art. 2 sec. 1 of the Commission Delegated Regulation (EU) 2016/1052 for 26 November 2025. Shares were bought as follows:

Date	Overall volume of the shares bought back daily (number)	Volume-weighted average stock market price in EUR (excluding incidental purchasing costs, rounded to four places according to commercial practice)
12.01.2026	51,834	27.7573
13.01.2026	21,000	28.4679
14.01.2026	21,000	27.7321
15.01.2026	21,000	27.4408
16.01.2026	21,000	27.3424

Therefore, the overall volume of the shares bought back by IONOS Group SE through the share buyback program since 26 November 2025 is 1,163,593 shares. Further information pursuant to Art. 5 sec. 1 b) and sec. 3 of the Regulation (EU) No 596/2014 in conjunction with Art. 2 sec. 2 and sec. 3 of the Commission Delegated Regulation (EU) No 2016/1052 is available online via http://www.ionos-group.com/investor-relations/share/share-buyback.html The purchase of the treasury shares was carried out by a bank mandated by IONOS Group SE exclusively via the Frankfurt Stock Exchange (XETRA trading).   Montabaur, 19 January 2026 IONOS Group SE The Management Board