What? I know silicon valley salaries are a thing, but absolutely everywhere else in the world this would be insane. Maybe change the headquarters to somewhere cheaper?
Still does seem high though.
According to Signal's 990, it's paying multiple employees over $700k. That's above-market for corporate compensation, and it's way above market for non-profit compensation, to the point where it could be considered private inurement.
Signal is trying to compete with the richest companies in the world; including for talent. And considering Signal's origins and motivations, they're not going to lower salaries or decrease benefits because some people believe that working for a non-profit automatically means lower compensation.