Negotiate some acceleration if you sell the company ahead of schedule — you don’t want to stay at the acquirer for an unreasonable period of time. Also negotiate 100% acceleration if the acquirer terminates you and deprives you of the ability to vest your stock.
(Full Post: http://venturehacks.com/articles/acceleration-sale)
Babak Nivi is a co-founder of AngelList and Venture Hacks. Previously, he was an entrepreneur-in-residence at Bessemer Venture Partners and Atlas Venture. He has worked on startups including Songbird, Grockit, and Kovio. He went to school at MIT where received 2 patents and published in Science.