I was there October 2012 in Houstan Texas for their manager and district manager training and event shows, over 10,000 district and retail store managers.
The executive team at Starbucks were encouraging managers to sell stocks that some might not have realized they had, telling stories of how some managers sold their stock that didn't realize they had for $10,000....at the time mangers got 43-46 shares per year, districts managers got more, and the crew got some too but not as much.
The managers were also encouraged to tell their crew to sell if they need to as well.
This low key orchestrated dump took the price from $25 down to $20.
Ironically that same event week was when they announced their partnership with Square so they can have people with iPhones going into their long lines and serve people getting a quick coffee ect.
If they announce their own coin I would be hesitate to buy. But if they were to start accepting Steem that can be huge for both Starbucks and us as a community.