R&W is a Jersey co isn't it?Technically Moshiri sold his shares in Red and White Holdings, not his Arsenal shares mate. I haven't looked to see if the company held any other assets (unlikely to be honest).
In companies with a small number of shares and those shares are tightly held by a small number of people it's common for a large block of shares to go at a premium to the market price.
I cannot think of an ulterior motive. The fact though that Usmanov appears to have paid a premium for the shares brings into further question his desire (as expressed by some) to dispose of these shares later this year.
If it is then no accounts filed and even if they were, they wouldn't show proceeds/profit on disposal surely.
Personal transaction with no public record I would imagine.