[The following footnote was effective before December 31, 2016. See PCAOB Release No. 2015-002. The current standard can be found  here.]

 fn 2  In certain circumstances, generally accepted accounting principles (GAAP) may require the presentation of pro forma financial information in the financial statements or the accompanying notes. That information includes, for example, pro forma financial information required by Accounting Principles Board (APB) Opinion No. 16, Business Combinations (paragraphs 61, 65, and 96 [AC section B50.120, .124, and .165]); APB Opinion 20, Accounting Changes (paragraph 21 [AC section A06.117]); or, in some cases, pro forma financial information relating to subsequent events; see AU section 560, Subsequent Events, paragraph .05. For guidance in reporting on audited financial statements that include pro forma financial information for a business combination or subsequent event, see AU section 508, Reports on Audited Financial Statements, paragraph .28.