Figures computed from official regulatory filings — .
Ownershipinsiders 91.77% · institutions 2.59%
In EUR · as of Oct 19, 2026
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1&1 AG, together with its subsidiaries, operates as a telecommunications provider in Germany. It operates through three segments: Access; 1&1 Mobile Network; and 1&1 Versatel. The company offers mobile internet, broadband products, and related applications, such as home networks, online storage, telephony, and smart home or international protocol television for residential customers and small and medium sized enterprises. It also owns and operates mobile network based on OPEN RAN technology; and the sale of telecommunication devices and accessories. In addition, the company provides fibre-optic networks comprising direct fibre connection to bespoke; and individual ICT solutions, such as voice, data, and network solutions. The company provides its products and services under the 1&1, WinSIM, Sim.de, yourfone, smartmobil.de, simply, PremiumSIM, and DeutschlandSIM brands. The company was founded in 1988 and is headquartered in Montabaur, Germany. 1&1 AG is a subsidiary of United Internet AG.
Market information source · Oct 19, 2026
| Insider | Type | Value · USD | Signals | Details |
|---|---|---|---|---|
| United Internet AG | Other | $953.7M | BAFIN |
| United Internet AG | Buy | $52.6M | conv 12 | BAFIN |
| MV Beteiligungs GmbH | Other | $1.4M | BAFIN |
| Vlasios Choulidis | Other | $4.5M | BAFIN |
| United Internet AG | Buy | $164.5M | conv 23First in 12mo | BAFIN |