[3] Its mission is to "protect free expression and enable secure global communication through open source privacy technology.

On February 21, 2018, Moxie Marlinspike and WhatsApp co-founder Brian Acton announced the formation of the Signal Foundation, a 501(c)(3) nonprofit organization.

[3][8] The foundation was started with an initial $50 million loan from Acton, who had left WhatsApp's parent company, Facebook, in September 2017.

Moxie Marlinspike served as Signal Messenger's first CEO[14] until stepping down on January 10, 2022.

This was until September 2022, when a new role of President was created, which is dedicated to more core lanes of strategy.