The story so far:
Step 1: Grab their attention with a wow. You are a film director: start with the car chase, not the credits.
Step 2: Do a fast and furious agenda/rest-rooms/fire alarms. Keep it brief.
Step 3: Now talk about them. Show you understand why they are there, their concerns etc.
Stage 4: Now talk about you and what you can do for your audience. Make it concrete, robust here and now. Of value.
Now, let's think ahead. You only have them in that room for one reason: to agree an action. E.g. to buy from you. To agree the head count increase. To understand Porter's Value Chain concept. So we want to maximise our chances of getting that action agreed; stage 5 is to get questions out of the way, so do that now:
Stage 5: Q&A. Ladies and gentlemen, what questions do you have?