You are spot on. You make common sense with many of your posts. With a stock like NVDA it is not uncommon for those who work for the company to sell their stock
Buying company stock is different. That is worth watching!!
I've also witnessed many employees who have no financial savy. They buy at the high and sell when it drops.
I don’t know about the people who sold but depending on management level you only have certain periods to sell. I’m sure they’ll sell more when it hits $700 a share.