The summary discusses the main types of audit reports that can be issued including: - Standard unqualified audit reports and when they are issued - Qualified opinion reports which are issued when there are departures from GAAP - Adverse opinion reports which are issued when financial statements are materially misstated - Disclaimer of opinion reports which are issued when the auditor cannot express an opinion It also notes that publicly traded companies receiving qualified or adverse opinions can face implications, and that non-public entities may receive opinions other than unqualified. Sample opinion paragraphs for each type of report are also paraphrased.