He probably did have the purchase planned, but again, the point I'm trying to make with the individual who commented previously is that IF GE is engaging in accounting fraud to deceive investors and IF CEO Larry Culp is aware of the fraud which he most assuredly would be as CEO, it makes absolutely no sense to throw away $2 million dollars. $2 million dollars worth of shares purchased does not represent plausible deniability when you're a CEO.

To my knowledge C level executives are constrained by blackout periods for the specific reasons you've outlined leading up to quarterly earnings announcements. And as you stated they have to file Form 4 with the SEC coinciding with the purchasing/selling of shares, which becomes publicly known and available for view within a matter of minutes/hours.