1&1 AG Comments on STOXX Index Decision

1&1 AG Comments on STOXX Index Decision

Montabaur, 10 July 2025. 1&1 AG (ISIN DE 0005545503) has taken note of the notification from STOXX Ltd. stating that the company will be removed from the SDAX, HDAX, and TecDAX indices as of July 11, 2025. The reason cited is a “takeover” pursuant to Section 8.3.2 of the DAX Equity Index Calculation Guide.

From 1&1 AG’s perspective, the requirements set out in the referenced Guide are not met. There is neither a takeover in place nor is the company involved in any takeover process. The offer made by United Internet AG on June 5, 2025, was a voluntary public acquisition offer in the form of a partial offer. Following completion of this offer, United Internet AG will hold 85.10% of the share capital (and 85.32% of the voting rights). Therefore, 1&1 AG considers the decision by STOXX Ltd. to be incomprehensible.

In this context, 1&1 AG also emphasizes that a sufficient free float of nearly 15 percent remains in place. This release also serves as a response to partially inaccurate representations in the media.

Montabaur, 10 July 2025

1&1 AG

The Management Board

About 1&1 AG

1&1 AG, headquartered in Montabaur, is a listed telecommunications provider and part of the United Internet Group.

With a focus on the German market, 1&1 specifically strengthens the country's digital sovereignty. 1&1 is the first network operator in Europe to operate a fully virtualised 5G mobile network based on innovative Open RAN technology - independent, technology-agnostic and ready for real-time-applications of the future. As the fourth network, 1&1 O-RAN stands for more competition and innovation in the German mobile communications landscape.

In addition to a comprehensive mobile communications portfolio, broadband connections are offered which are mostly based on 1&1 Versatel's Germany-wide fibre-optic transport network and on regional networks of city carriers and Deutsche Telekom.

While the 1&1 brand addresses value and premium segments, the Group's discount brands appeal to price-conscious target groups.