I keep hearing this argument that when BG is sold out the...

I keep hearing this argument that when BG is sold out the buyback has more power. I don't get it, when BG is gone there shouldn't be a need to buyback as supply will be gone. How can the buyback give me a greater % of shares if it's purchasing less. Why would the share price be falling if the biggest seller is gone. IMO the value is now and the buyback has ceased for reasons we haven't been told. There's an important meeting in Feb so I'm expecting some decent news to be communicated, maybe a scientific publication release, first patient dosed