Article says plan was created in August.
Also I wonder according to the rules, with predetermined date, do you need to sell right at the opening or can choose time within day? Because it says "same day" but it's not clear was it before or after announcement.
I’m imagining now a Senate hearing where republican members admonish Pfizer for not announcing this information before the election to help their candidates, only for the CEO to drop the ultimate defense of “I timed it to make more money”