The announcement of a dividend payout typically leads to a short-term increase in the stock price as investors buy in to qualify for the dividend. However, on the ex-dividend date, the stock price usually drops by roughly the amount of the dividend, as the company's assets have effectively decreased by the total amount of the dividend payout. In this case, TriMas' stock is expected to open 4 cents lower on Wednesday, reflecting the 4 cents per share dividend.