GP probably got information about the share price offered from current employees and did the math. Once the acquisition is finalized, they'll receive more details since they are a shareholder.
Employees don't know share or exit price yet. Won't be announced for a few more months.
However, if the OP is speaking the truth about the timeframe he got shares from, he is guaranteed to be up. There are definitely people who lost money on this deal, but definitely not Series A people.
