@atomicpoet Well of course I can't find it now that I want it, but I was reading an article earlier that this was an automatic stop-loss trigger that had been set 2 years ago. It's a fairly common occurrence in companies to prevent stockholders from losing too much money in the event of a massive loss. Since the Crowdstrike listing fell like 20% today (or maybe even more now, I haven't seen), that quick drop triggered the sale.
So the timing seems suspect, but it's apparently working as designed and was something set in motion as a hedge, likely when that person became CSO and got some massive stock in the company.