[resist_futility]

How would a random person know if that information was MNPI? How could you possibly prove that someone knew it was?

[arthurcolle]

Ignorance of the law is not an excuse for misconduct

[growse]

This has nothing to do with ignorance of the law, it's about intent.

You can be fully versed in insider trading law, receive some information that you reasonably assume isn't protected, trade on it, and that's not insider trading.

If that weren't the case, every single person who traded a stock after some MNPI was inadvertently broadcast/published would be guilty of insider trading.