You have this, so, so wrong. Insider trading isn't X sold stocks at Y. Insider trading is X arranged to sell stocks at Y based off of information disclosed fr

You have this, so, so wrong. Insider trading isn't X sold stocks at Y. Insider trading is X arranged to sell stocks at Y based off of information disclosed from internal actor Z that was not publically knowable at the time of initial communication. It's about having a traceable privileged internal source that no one else did. Both the source and the trader are then culpable. Nothing about order stream makes it clear insider trading happened. It's about communications and things that happened before the trade that make insider trading. Trading in ones own shares as an executive is often treated with extra care because you are the ultimate insider, and you are also burdened with a responsibility that should prevent you from shorting your own stock (shorting as an exec signals either regulation on the horizon, or somebody hasn't been doing their fiduciary due diligence).