I actually shed a tear reading this article. Mostly from LOL or maybe from my allergies.
First - pretty sure that if investors require that info to receive investment, a company seeking that investment will provide it for them. It sounded to me like this "VC" is picking up shares on the secondary market from owners of the stock desiring an early exit - not necessarily the company wanting investment. Caveat Emptor.
Second - until that company becomes public it's value is more like the state of Schrodinger's Cat rather than a knowable value - it is simultaneously alive and dead;O