According to their press releases:

The Dec 21- 100,000 grant at $2.24 share left 202.5 M shares/214.7M diluted = 12.4M exercisable

The Jan 18- 525,000 grant at $2.45 share left 202.9 M shares/215.7M diluted =  12.8M exercisable

Feb 05- 9,152,800 stock options surrendered (for nominal consideration)  = 968,500 exercisable

203.1 million common shares outstanding and 210.7 diluted

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The numbers don't work for me, but then I'm not an accountant.  Can anyone explain it to me and how does one find out what the nominal considerations cost?