From: https://proton.me/foundation
Governance for people, not for profit
The Proton Foundation is a Swiss non-profit and does not have shareholders. It is therefore separated from individual financial interests and must act in the best interest of the Proton community in perpetuity. No change of control of Proton can occur without the consent of the Foundation, therefore enabling the Foundation to block hostile takeover attempts of Proton which are not aligned with our legal obligation to serve the community. Our role is to ensure that our community always comes first.