The company blows through millions a month and many voices here profess to count their financial horizon in days or few weeks before bankruptcy arrives. Handing over a few hundred thousand will not change the cash trajectory and therefore CytoDyn has to find a way to raise funds, regardless of whether company officers receive cash or shares, and with the same urgency.
In addition - they have a fixed and very limited number of remaining shares to issue and that they can not just authorize to increase/expand on their own. So - taking from that pool is a greater limiting factor to the company than using up a relatively small amount of cash.
Not worth guessing the reasoning for this but reasonable enough to 'assume' that if they're under investigation (criminal according to some) - the last thing they would do at this point in time is set themselves up for exposure on any metric criminal or otherwise that the SEC or DOJ would scrutinize.
This should be iron-clad straight and narrow regardless if positioning for partnership or just swapping cash for shares.