Dear Airbrake,
if, as you suggest, these BA directors are selling because they know or think, using inside information, that things are about to take a dive.... then this would be a serious criminal offence.
I would suggest that they would not dream of selling in such circumstances, it would be grossly foolhardy as they are almost certain to be found out. the stock market is well used to looking out for such timed sales by insiders.
more likely surely is that the share option date has just passed, the options are exercised and the recipients tax advisors tell them to sell now and buy a bigger house or pocket the £££.
this would explain why the timing of the sales by several directors are so close.
I am not a fan of BA by the way, I have found them to be totally awful.
pvm