I dont know of the legal situations with nesletters, but i do know companies where insiders have sold right after an announcement and the stock has tanked thereafter.
Look at OSIS with daily volume of around 30,000. Ther was an announcement of fiber optics in March. The stock traded 22,000,000 shares going up from 10 to 28. Insiders sold and the stock has steadily traded down thereafter.
I think the next announcement will similarly move the stock up 200%. However this time it might keep going up if, in fact, they receive orders for their fiber optics from someone like LU. |