In any case, the chance of normal employees making money from the liquidation event is almost none. The best case is TB/execs managed to cash out the class A and get +50-60% return. If you have Class A, you don't have to wait for a liquid event to cash out, just leave the company. Common B class stock will worth virtually 0. The 20X ebitda valuation projecting for 2019 is based on the assumption we are a software company, which we are not. 20 * 270 = 5.4b was a lie. network equip ebitda multiples is around 14. We are looking at a more realistic (0.614+0.420)*270=4.4b valuation if we do well in 2019. Your class b will worth nothing in all possible cases.
I would say, forget about the buyout.
Whoever buys Riverbed has nothing to do with any of us. That pathetic below-market base salary is all one can get.