Ann: Quarterly Activities/Appendix 5B Cash Flow Report, page-4

I agree that with the cashflow being tight any extras in the bank is very handy right now, but where is that $1.5mil your referring to? I see a couple of announcements in July around options, (but it is hard to interpret some of that lingo).... it looks to me that on the 14th of July 5,088,606 MKR shares were issued where at 15.19c each = $773k cash into MKR bank account..... but I don't see anymore than that.
As the other 2 announcements appear to be just about the issuing of 5mil in options (of the 10mil total) related to the recent cap raise (ie; so not regarding the 'excising' of any options, meaning a none cash transaction for MKR).