Companies in the United States are staying private longer, and this trend has important implications for companies and their employees. Employees holding equity awards in private companies are restricted from monetizing an illiquid asset that they might need to support their living expenses....

Corporate executives receive a considerable portion of their compensation in the form of equity and, from time to time, sell a portion of their holdings in the open market. Executives nearly always have access to nonpublic information about the company, and routinely have an information...