@jerry This is broader than just risk, but my advice on talking to top leadership is to pay very close attention to the questions they ask. They are trying to make decisions about what the company should do, and if you are talking to them, it's likely because someone thinks you have information that could help them make that decision.
Have understandable answers and plan for the follow-up questions. Identify the key points you think the leaders need to know but may not know to ask.