Mario Gabelli's GAMCO alleged that Redstone's investment vehicle, National Amusements , received $60 for each of its Class A Paramount shares while public shareholders only received$23. REUTERS A representative of Redstone declined to comment, and Skydance did not immediately respond to a request for comment on the lawsuit, which was filed under seal on Wednesday in Delaware's Court of Chancery. Billionaire investor Mario Gabelli's investment fund filed a class-action lawsuit on behalf of Paramount Global ...