Investing

I went ahead and upgraded to the premier version.. I'm still confused on how to enter all this as this came from a startup, that eventually went public, and then merged with another company, then eventually forced a buy out on me. 

 

So for me box 1b on the 1099B shows unknown. The only option for TurboTax is a dropdown to select blank, or various (or more than one date)  I selected the latter.  Should I keep this or enter the date I initially made the purchase on StartEngine?  Also 1E for cost or other basis, is listed as unknown on my 1099B..  Initially I purchased 2000 shares on StartEngine for $120.  Should I put $120, since that's what I initially invested when the company was private?