Whilst the timing of the SP and trade volume increases does...

Whilst the timing of the SP and trade volume increases does point towards a leak (and I am inclined to believe that a leak is more likely than not to be the cause of the SP increase) we can't definitively say there was/is a leak until we have solid evidence. Furthermore, we can't say it has to be one of four people, when the information we have at hand indicates that the pool of suspects is much larger than four.

There are plausible, and less nefarious, alternative explanations. Such as a large purchaser entering at a time they thought was early enough to not miss the announcement (that we were told was going to be before the end of July 2020) followed by a mad rush of investors believing that this investment was driven by inside information. Not to say that this is what occurred, but it is just as plausible as a leak.

Also, I believe its a Prince Albert, not a Prince Alfred..