[jmopp]

The accountants at Amazon have material non-public information that they can't act on for obvious reasons, but if they know beforehand - for instance - that sales aren't growing as fast as they used to, or that luxury purchases are trending downward, they can forecast that their own price might slump in the next few months.

[freyr]

I’d be more impressed if they could predict market conditions 3+ years from now, when the bulk of the Amazon employees’ shares are actually vesting.

Maybe they can, but I think that’s a very generous assumption.

[mateo411]

They can still buy and sell their own company, but they have to respect the black out dates.

[sangnoir]

> They can still buy and sell their own company, but they have to respect the black out dates.

Trading on specific non-public information is insider trading and is illegal at all times - even during official trading windows.