For example RMXOG http://www.ozstockstats.com/company-option/rmxog
You will see on that webpage OG's are options that expire 21-11-2019
Up until that date you can trade them like RMX shares (heads) or convert them to normal RMX shares at their exercise price. In the case of OG's the exercise price is 1.5c
If for example you had 1mil OG's converting them would mean paying RMX $15,000 which would add $$$ to their kitty
RMX Price at posting:
3.2¢ Sentiment: Hold Disclosure: Held
A personalised tool to help users track selected stocks. Delivering real-time notifications on price updates, announcements, and performance stats on each to help make informed investment decisions.
(20min delay)