Comstock is a poor example of a Pink Sheet "growth stock", as it has been an SEC reporting issuer for over a decade. Prior to that, it was a "stinky pinky" technology shell company that did absolutely nothing until it filed a Form 10 in 2001 and became fully-reporting. It's fully reporting status made it very attractive as a shell for an actual, legitimate company and it entered the mineral exploration business around 2004 through an asset purchase agreement which was essentially a reverse takeover.
So, rather than Comstock being a good example of a "pink sheet stock that made good", it is instead the opposite. A good example of a fully reporting company that made good that did absolutely nothing and had very little value when it was a non-reporting "stinky pinky".