It looks like only 1,786,947 warrants were exercised out of the 6.5 m possible. If I am reading this right. With cash that was raised this would imply that 900,000 were the .50 cent warrants.
Between January 1, 2016 and February 22, 2016, the Company raised $1,965,327 from the exercise of 2,686,947 warrants and 628,000 stock options.