Other capital market information | 8 December 2025 11:03

IONOS Group SE: Release of a capital market information

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 – 2nd Interim Announcement
IONOS Group SE: Release of a capital market information

08.12.2025 / 11:03 CET/CEST
Dissemination of a Post-admission Duties announcement transmitted by EQS News – a service of EQS Group .
The issuer is solely responsible for the content of this announcement.

In the period from 01 December 2025 up to and including 05 December 2025, IONOS Group SE purchased a total of 227,827 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)
01.12.2025	42,512	27.2195
02.12.2025	71,871	26.8027
03.12.2025	31,851	26.2301
04.12.2025	55,124	26.6018
05.12.2025	26,469	26.3297

Therefore, the overall volume of the shares bought back by IONOS Group SE through the share buyback program since 26 November 2025 is 288,306 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, 08 December 2025

IONOS Group SE

The Management Board

08.12.2025 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.

Language:	English
Company:	IONOS Group SE
	Elgendorfer Straße 57
	56410 Montabaur
	Germany

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2241724  08.12.2025 CET/CEST