Is it okay to ask my CEO for a memo explaining why our revenue has stalled and what he plans to do about it?
Yes, but do it the right way.
Say “I have a few ideas about how to accelerate growth. Can we discuss some time?” Come up with a few good ideas first. Then, ask if you can discuss them.
If the answer is No, so be it.
If the answer is Yes, then explain your best 3 ideas and listen to the responses. Really, in those responses, will be what he plans to do about flat growth.