Identify similarities and differences between the Standard Unmodified Opinion Audit Report for a U.S. Nonpublic Company (AICPA makes auditing standards) and the Standard Unmodified Opinion Audit Report for a U.S. Public Company (PCAOB makes auditing standards). Do more than use general terms; you need to be specific. Concerning a public company, it is registered with the Securities & Exchange Commission (SEC) and its stock or equity is exchanged through a market like the New York Stock Exchange, or NASDAQ, etc. Samples of such include Walmart, Apple, etc. A nonpublic company is a private entity that does not sell its equity in a public fashion. Dell is a private entity that was previously a public company. The Big Four are all private partnerships legally structured generally as a LLP or maybe a LLC