IONOS Group SE/ Disclosure pursuant to Art. 5 Sec. 1 b) and Sec. 3 of the Regulation (EU) No 596/2014 (MAR) in conjunction with Art. 2 Sec. 2 and Sec. 3 of the Commission Delegated Regulation (EU) No 2016/1052 // Share Buyback – 11th Interim Announcement

IONOS Group SE: Release of a capital market information

29.06.2026 / 09:55 CET/CEST

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In the period from 22 June 2026 up to and including 26 June 2026, IONOS Group SE purchased a total of 273,068 treasury shares as part of the share buyback program. The start of the share buyback program was announced on 30 March 2026 in accordance with Art. 2 sec. 1 of the Commission Delegated Regulation (EU) 2016/1052 for 30 March 2026.

Shares were bought as follows:

DateOverall 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)22.06.202667,81526.675123.06.202636,03726.668524.06.202646,14526.641825.06.202667,33126.695626.06.202655,74026.2028

Therefore, the overall volume of the shares bought back by IONOS Group SE through the share buyback program since 30 March 2026 is 1,946,004 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, 29 June 2026

IONOS Group SE

The Management Board

29.06.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.

Language:EnglishCompany:IONOS Group SEElgendorfer Straße 5756410 MontabaurGermany
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