It's an extraordinary amount and extremely unusual. One of the biggest shockers to me is that Jeff Bezos was sold off about 8ish billion of the 11 billion by the four CEOs.

Why would he do that? It's hidden in plain sight because so few people see it. They know what's coming. 

https://fortune.com/2024/02/27/the-great-cashout-jeff-bezos-leon-black-jamie-dimon-and-the-walton-family-have-now-sold-a-combined-11-billion-in-company-stock-this-month-some-for-the-first-time-ever/

Steve M