To the far right of the GBSN symbol on that page at the above link - click the black box/file thingie.
Current Value Daily List Date/Time 04/07/2017 11:49:10 Event Type Reverse Split/CUSIP Change Effective/Ex Date/Time 04/10/2017 00:00:00 Subject to Corporate Action CD Offering Type No Restrictions Daily List Comment Daily List Event Code DA Forward Split Ratio Reverse Split Ratio 1:2000 Dividend Type Reverse Split
SINCE I consider a Reverse Split of a penny stock 'legal highway robbery'. And I have always had nothing but my entire positions (money) wiped out. I am out of GBSN today. Stay beyond closing bell - and you risk your entire investment.