A. Sit down and go over rev model change / secret Series A. Let him speak 90% of the time. Then; revisit the roles/responsibilities you both signed on for. Reit

A. Sit down and go over rev model change / secret Series A. Let him speak 90% of the time. Then; revisit the roles/responsibilities you both signed on for. Reiterate the role of CEO; overseeing scale, high-level items and that it's imperative to stay focused on such, keeping tech-related accountability to you. B. Communicate via all-hands more often, so his micromanaging efforts are blatantly obvious, allowing objectives to realign as a whole. --- I've been in a similar spot previously; heavy written email to a co-founder and all. Don't send it. Don't blow it up. Approach this from a tone of strategic tone and not emotional.