“Try to avoid single-trigger acceleration for nonfounders whenever possible. Not only is it sure to cause issues during M&A (the acquirer will be worried that everyone will vest and leave after the transaction), but an acquirer may make changing these terms a condition of a deal, which just leads to ugliness when you inform people that they no longer are getting the deal that you promised them (or telling the investors that you’re scuttling the sale of your company because Chris in sales wants more money).”