I don't think they should, but, yeah they could depending on what they have in their treasury. Also, it wouldn't affect the float unless they filed a registration statement like an S-1 with the SEC or else the shares would be issued restricted. The unissued shares could also be locked up in indemnity or lock-up agreements and they would have to do a corporate action and go through the secretary of state and get an articles of amendment to increase their unissued share count