Assented Stock
  
So, you own stock in a company, and that company is going to be taken over. If you are in favor of the takeover, and have agreed to the terms on the table, you hold assented stock. If you say "oh no" to the proposed terms of the takeover and the offer you’re given, you hold non-assented stock.
The offers on the table for assented and non-assented stock may not be the same. Usually, the price offered for assented stock is greater because there is kind of a "control premium" value embedded in it.