Abstract: | We examine whether insiders systematically exploit their private information before exchange listings and delistings they are likely to know about before outsiders/investors. Analyzing a comprehensive sample of over-the-counter (OTC) firms, which listed on the New York Stock Exchange (NYSE) or American Stock Exchange (AMEX) during 1977–93, we find evidence that insiders act on their private information of an impending exchange listing by purchasing or postponing the sale of stock on private account. For firms delisting from the NYSE or AMEX, we find that insiders of these firms sell stock on private account before delisting. Overall, the evidence indicates that insiders act on their private information before exchange listings and delistings. |