The other possibility is the restricted stock. There were some conversions done into restricted stock as well as some professional fees paid. So for example, about 150,000,000 shares became free trading between the end of Sept and Oct 16. When those were sold into the market they likely were done as block sales. Those would show up as T-trades without a corresponding change in the OS over that period.
Since the company does not disclose the float directly it is hard to tell...other than seeing the “restricted stock” number go down (in the absence of an issuance) and the DTC number going up.
While there could be some retail activity in those t-trades, most retail won’t fork over the block fee.
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