Proton AG
PrivateLast updated September 2026
About Proton AG
Swiss privacy technology company behind Proton Mail, Proton VPN, Proton Drive, Proton Pass, and Lumo. Proton operates under a privacy-first mission and is owned by the nonprofit Proton Foundation. Founded in 2014 and headquartered in Geneva, Switzerland,.
Employees
1000+
Founded
2014
Proton AG — Key Facts
| Company | Proton AG |
|---|---|
| Product | Lumo |
| Founded | 2014 |
| Headquarters | Geneva, Switzerland |
| Employees | 1000+ |
| Stage | Private |
| Website | lumo.proton.me |
Company Profiles
Proton AG — Frequently Asked Questions
Who owns Lumo?
Lumo is developed by Proton AG, headquartered in Geneva, Switzerland.
How many employees does Proton AG have?
Proton AG has approximately 1000+ employees.
Where is Proton AG headquartered?
Proton AG is headquartered in Geneva, Switzerland.
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Lumo Review
Read full review, pricing, and alternatives
Lumo trades some ecosystem breadth for a stronger privacy posture: no chat logs, zero-access encrypted saved chats, open-source models, and no training on conversations.