Thank you, Bob, for that very kind introduction. It is a pleasure to be here to discuss with you the future of business reporting.
But first, let's begin by talking about a development that occurred a long, long time ago, in fact sixty-six million years ago, give or take an epoch.
That was the moment when a meteor struck the earth somewhere near, what is today, the Yucatan Peninsula, altering the climate and effectively wiping out the dinosaurs. The meteor presumably traveled over an observable path with predictable results. Scientists have labeled this the cretaceous-paleogene extinction event.
I'm not here today to talk about dinosaurs, but I do want to talk about extinction events. There is a metaphoric meteor heading in our direction and it is aimed squarely at the audit and the role of the auditor. It is observable and predictable.
Before I go on, I want to note that the views I share today, including any reference to dinosaurs or meteors, are my own and do not necessarily reflect the views of the PCAOB, my fellow Board members, or the staff of the PCAOB.
Some might think the metaphoric meteor is technology. After all, we have heard a great deal over the last few years about the disruptive potential of technology on the audit. You've probably read one article after another about how blockchain, robotics, artificial intelligence, or other developments will make the audit unnecessary.
Technology is not the metaphoric meteor. Advances in technology do have the capacity to upend the audit. Drones may be able to do a better job counting cattle than humans; machine learning at testing estimates. Data analytic tools can facilitate the examination of entire populations.
But technology, while disruptive, will not be an extinction event. If anything, technology will improve quality and enhance the relevance of the audit. So if not technology, what then?
The onrushing extinction event is irrelevance and, like the climate changing meteor, the development is observable and predictable.
Investors and other consumers of the financial statements are increasingly relying on information not subject to the audit. The effect is the reduction of the significance of the audit and the role played by auditors.
The threat to relevance is not new. Audits have faced these types of concerns before. The history of auditing has been one of evolution and accommodation, changing to respond to the needs of investors, albeit with occasional pressure from external sources such as legislators, courts, and regulators. Indeed, the introduction of new communications requirements about critical or key audit matters (C-CAMs and K-KAMs) is a recent example of how the audit report can evolve to become more relevant to investors.
The current threat to relevance, however, is more serious.
So I want, in my remarks today, to explore ways to head off this possible extinction event.
First, I will talk briefly about how the audit has evolved to retain relevance in response to the interests of investors and other market forces.
Second, I want to discuss some of the types of information increasingly used by investors that are currently outside the audit, including alternative performance measures, or what I will call in this speech Non-GAAP financial measures, key performance indicators (KPIs), XBRL, and sustainability disclosure. And I will explore some of the concerns raised by investors and others about the quality of these types of information.
Finally, I want to suggest a modest path forward that has the capacity to start a conversation among investors, audit firms, and other stakeholders about relevance and possible changes that will help prevent auditors from becoming the weavers of the 21st century.
II. Some Thoughts on Audit Relevance
Challenges to the relevance of the audit are nothing new. Standards used in the audit have been undergoing constant evolution in an effort to reflect the needs of investors and the capital markets. With the growth of large corporations in the United States, investors demanded "the development of more effective accounting and auditing standards." When events in the market exposed gaps, the standards evolved.
Likewise, the role of the auditor evolved. In the 1970s, responsibilities were extended to matters outside the financial statements with the adoption of the "Other Information" standard. Later, responsibilities were extended to reviews of interim information, with reviews of interim financial information eventually becoming mandatory for public companies in the U.S. In the aftermath of Enron and WorldCom, firms were required to attest to the effectiveness for many U.S. issuers of the internal control over financial reporting.
The most recent example of evolutionary change to promote relevance occurred in connection with the introduction of K-CAMs and C-CAMs into the audit report. Audit reports traditionally used a "thumbs up" or "thumbs down" model with little or no explanation. CAMs changed that by requiring reports to include insight into the most challenging aspects of the audit. Audit reports for the largest public companies in the U.S. began disclosing CAMs in September of this year.
These evolutionary steps helped maintain relevance and maintain investor confidence in the audit and audit report. At the same time, however, the role of investors in the debate over relevance evolved. Investor input into issues of audit relevance was, during the pre-Sarbanes-Oxley period, modest. It was during this period that the auditing profession held the drafting pen with respect to changes in the standards.
With the advent of the Sarbanes-Oxley Act of 2002 (SOX), that changed. Congress gave the pen to the PCAOB. Moreover, the PCAOB was instructed to act in the interest of investors and the public. That effectively provided investors and the public with a seat at the PCAOB's standard-setting table. The seat provided a more direct mechanism for addressing issues of audit relevance, including, potentially, those related to Non-GAAP, KPIs, XBRL, and sustainability metrics.
III. The Oncoming Meteor
A. The Importance of Data Quality
Growing up in the U.S., we are raised on the myth that if you are observant enough and lucky enough you can pick out that one company that, with a small investment, will make you fabulously rich. A $1,000 investment in Amazon in 1997, the year the company went public, would be worth more than $1 million today. Or there was Forrest Gump who let Lt. Dan invest his Bubba-Gump money in a "fruit company" later identified as Apple and, as a result, he didn't "have to worry about money no more."
Everyone in this room knows, however, that while Forrest Gump may have been successful, investment decisions for most of us are not roulette wheels or lotteries or random guesses. Institutional investors responsible for the economic wellbeing of the public are not prone to strategies that resemble gambling. Investors instead seek to make reasoned decisions that focus on future performance. In doing so, investors are not, and should not be, limited to the information in the audited financial statements. Other types of information can be highly useful in predicting future cash flows.
Let's briefly discuss four categories of information outside of the audited financial statements increasingly used by investors in making investment decisions. They include Non-GAAP, KPIs, XBRL, and sustainability disclosure.
B. Non-GAAP Financial Measures
Non-GAAP financial measures are generally those that seek to supplement rather than supplant the existing accounting framework. At one time, these measures were relatively uncommon and of modest importance to investors. Those days are over. Particularly among large companies, the metrics have become almost universal. The percentage of companies in the S&P 500 using Non-GAAP metrics has risen to 96%, up from 59% in 1996. Moreover, the number of non-GAAP metrics used by each individual issuer has increased.
What explains this dramatic growth? The simple answer is that investors find them useful. They may help reduce the complexity sometimes associated with GAAP disclosure. They can provide insight into management's view on how to best assess the performance of an issuer and, at least sometimes, be more predictive of future earnings. Indeed, academic research suggests that in the right circumstances, non-GAAP measures can be "more value relevant" to investors than the information in the financial statements.
At the same time, however, Non-GAAP measures can raise concerns. Adjustments can mislead investors. They may create an inaccurate presentation of the financial condition of the company, painting a more optimistic picture than is warranted. They may raise issues of accuracy and consistency, with metrics calculated incorrectly or calculated differently from period to period without adequate explanation.
C. Key Performance Indicators
KPIs are metrics that facilitate the assessment of an issuer's business performance but often have little direct relationship to the audited financial statements. Some KPIs are widely used and can include such metrics as comparable store sales, average number of daily users of a social media platform, and on-time performance for airlines.
The area is dynamic. Big data and technology have expanded the universe of possible KPIs. Already satellites are busy counting cars in parking lots and software tools are collecting the number of social media references.
Disclosure of KPIs can be beneficial. They offer an alternative source for predicting future cash flows. In some cases, they provide insight into the strategic planning process used by management. In an era of issuers going public devoid of positive earnings, KPIs may provide a meaningful glimpse into management's proposed path to profitability. Properly done, therefore, they can benefit investors and help reduce the costs of capital.
Issues of accuracy, however, can arise in connection with these metrics. "[S]usceptible to manipulation", KPIs may also provide an inaccurate perspective on an issuer's business. They can be calculated incorrectly or computed differently from period to period without adequate disclosure of changes in the relevant definitions, variables and assumptions, or fail to include all relevant inputs.
XBRL involves the use of machine readable tags embedded in financial disclosure. The promise of XBRL is to allow for software and other tools to assess a broad population of issuers in a cost-effective manner.
Significant benefits from structured data can inure to issuers, investors, and other stakeholders. By reducing costs, XBRL can expand the population of public companies considered and increase the number of investors who can engage in the analysis. Issuers may benefit from the use of XBRL through improvements in the quality of financial reporting and the quality of internal decision making.
Concern can arise, however, over the reliability of XBRL. Recently, the U.S. Securities and Exchange Commission (SEC) took steps to reduce some of these concerns by mandating the use of inline XBRL. Inline requires the embedding of XBRL tags into a single document submitted to the SEC, eliminating the Interactive Data File otherwise required. In doing so, the SEC reduced the concerns that inherently arise when issuers submit two versions of the same information.
Nonetheless, concerns over quality remain. In some cases, wrong tags may be used. Some may incorrectly rely on extensions in place of required tags, interfering with the ability to make comparisons. Lower quality limits the promise of XBRL and the ability to conduct cost-effective analysis.
E. Sustainability Disclosure
Few areas have garnered more attention lately than the disclosure of information relating to sustainability, particularly environmental, socia,l and governance ("ESG") matters. Investors are increasingly taking this type of information into account when allocating capital. Investments based upon ESG principles have grown 18 fold since 1995, a leap from $639 billion in 1995 to more than $12 trillion in 2018.
Sustainability disclosure commonly addresses risks to an issuer's business model. The disclosure may be about immediate concerns, whether stranded assets, reserves affected by changing weather patterns, or escalating energy costs. They may also address concerns to the issuer's longer term business model.
In this area, issuers may disclose a multitude of metrics, whether energy consumption, water usage, or injury rates, with climate change and supporting metrics "the most important specific ESG issue considered by money managers in asset-weighted terms". Disclosure can also take the form of scenarios designed to test the sustainability of a business model under varying conditions.
Concerns have arisen over the completeness, consistency, and quality of sustainability disclosure and supporting metrics. Some of those concerns have arisen around the process used to collect the relevant data and the inputs that are included in any scenario or calculation. In addition, the disclosure may constitute an incomplete or unverifiable presentation of the issuer's risks.
IV. Preventing Mass Extinction: Steps Forward
All of these developments demonstrate that matters outside the audited financial statements are growing in importance. For now, GAAP remains the "gold standard." Subject to reasonable assurance, audited financial statements provide a high degree of accuracy, consistency and comparability. But with investors increasingly looking to other types of information, there is no guarantee that this gold standard will remain untarnished.
Some of the concerns with respect to unaudited measures, such as Non-GAAP, KPIs, XBRL, and sustainability metrics, have centered on the need for external standards. Many would benefit from uniform definitions and approaches. Others, however, would not. More customized metrics can sometimes provide a unique insight into the performance of a specific issuer. In other words, not every metric can or should be standardized.
What is a common denominator for these unaudited measures, however, is the need for improved quality. Improvement in accuracy, completeness, and consistency would benefit everyone, making the information more useful to investors, managers, directors, and the public. Moreover, improvements in data quality could spur progress on other issues such as the development, and agreement on the use, of common standards.
Ensuring quality, however, means more than making certain that the math is correct. Consistency in application matters. So does the process used to collect the data. Relevant controls should be sufficient to, among other things, ensure accuracy and completeness. For example, for a metric to be a fair representation of the issuer's business or performance, consideration needs to be given to the inputs and other variables used in the calculation.
Procedures designed to test accuracy, completeness, and consistency are routinely performed in an audit. Audits include procedures designed to test the accuracy and consistency of accounts and disclosures in the financial statements. Data may be examined for consistency from period to period, for compliance with relevant rules and regulations, and for the accuracy and completeness of the inputs used in the calculation. Auditors routinely apply judgment and professional skepticism to management assertions. In an era of ICFR opinions, audits entail consideration of the control environment.
At the same time, Non-GAAP, KPIs, and sustainability metrics do not always remain entirely outside the audit. Firms may become aware of these metrics when performing a risk assessment in the planning phase of the audit or may need to "read and consider" at least some of them to the extent appearing in the annual report. In some cases, firms provide assurance on metrics that may, in other circumstances, qualify as Non-GAAP. This can occur, for example, with respect to the footnote containing disclosure about operating segments, something examined as part of the audit. An EU directive requires audit firms to verify that certain ESG information "has been provided" by the issuer and left open the possibility that member states could require that any separate report "be verified by an independent assurance service provider."
In addition, audited and non-audited information may appear together in the same reports and filings. Information from the financial statements and KPIs may both appear, for example, in management's discussion and analysis in the annual report filed on Form 10-K. Non-GAAP and audited financial information may also be included in the same earnings release. iXBRL involves the use of machine-readable tags embedded into the financial statement information filed with the SEC.
All of this presents a risk of investor confusion. Investors may have an increasingly difficult time separating the audited from the unaudited. Indeed, academic research has found that confusion over this issue already exists.
Concern over quality, the potential for confusion, and the issue of audit relevance suggests the need for a conversation; a conversation that seeks to clarify the role of audit firms, if any, with respect to Non-GAAP, KPIs, XBRL, and sustainability measures.
Let me suggest a modest way that I think the discussion of some of these issues can be brought forward and one where the investor seat at the standard-setting table can make a significant difference.
Audits already must sometimes take into account matters outside of the financial statements. The "Other Information" standard provides that firms should "read and consider" the contents of the annual report for material inconsistencies with the financial statements. Issued in the 1970s, the standard was put in place at the behest of the SEC.
Adopted at a time when SEC filings were done in hard copy, the standard has not been modernized to reflect the dramatic shifts in the mechanisms for disseminating financial information, whether earnings releases required to be furnished to the SEC, social media, or TCFD (Task Force on Climate-related Financial Disclosures) and sustainability reports. Nor have proposals taken into account the ability to rely on technology and automation as a means of reviewing relevant "other" information. 
Given the growing importance, and use of, metrics outside the financial statements, the PCAOB did, in 2013, consider changes to this standard. Despite a proposal and additional research performed by PCAOB staff, no revision to the standard has yet been made. "Other Information," including auditor responsibilities relative to Non-GAAP and KPIs, nonetheless remains on the PCAOB's research agenda, with the staff in the process of "developing recommendations" on these issues. 
In my opinion, the time has come for a renewed conversation over the "Other Information" standard. In doing so, the conversation could consider whether the role of auditors in connection with Non-GAAP, KPIs, XBRL or sustainability metrics, should go beyond what is currently required under a standard that was issued before the proliferation of many of these measures. And in reviewing the information, the conversation would presumably want to include whether the "read and consider" standard currently applicable provides a sufficient level of auditor involvement.
The conversation will have the capacity to address concerns over relevance and, given its role setting and revising standards, the PCAOB could, in my opinion, serve as the moderator of any discussion over changes to the "Other Information" standard. The PCAOB has played this moderator role before with respect to relevance. Concerns over the relevance of the audit report caused the PCAOB to convene the key constituencies, collect the relevant comments and feedback, and ultimately devise a set of revisions. The process wasn't easy and took six years from concept release to final rule to complete, but produced a revised standard approved by the SEC that resulted in disclosure of critical audit matters or CAMs and firm tenure, among other things.
A similar conversation could be initiated with respect to the scope of the "Other Information" standard and how it should apply to Non-GAAP, KPIs, XBRL, and sustainability disclosure.
Any discussion would need to resolve a number of questions. Do investors want audit firms to play an increased role with respect to this information? Which metrics or other information is appropriate for auditor review? Should the standard apply to other periodic reports besides the annual reports? What level of review or assurance should be applicable? What are the costs of including these types of information in the "Other Information" standard? Does the PCAOB have the authority to explicitly include Non-GAAP, KPIs, XBRL and sustainability metrics within the "Other Information" standard irrespective of where they are disclosed?
The discussion would have limits. The "Other Information" standard was not designed to define relevant metrics. That presumably falls to other regulators or the private sector. Still, the conversation may lead to changes in the audit that result in improvements in accuracy, completeness, and consistency of the information and may reduce some of the uncertainties with respect to these measures and metrics. And those steps may spur changes elsewhere that address remaining concerns.
I want to end with some observations and suggestions.
The metaphoric meteor is approaching. The path is observable and predictable. What, if anything, can or should be done about this threat to the relevance of the audit?
Audit relevance here means relevance to investors and the public. In altering standards, the mission of the PCAOB is to act in their interests. For a conversation moderated by the PCAOB to take place, investors need to ask for it. They must take advantage of their seat at the standard-setting table and urge that this topic be moved forward.
Of course, a decision to hold a conversation does not presuppose an outcome. Perhaps after fully vetting the various issues, the "Other Information" standard will remain largely as it is. Even then, the discussion may prove useful in clarifying, if not fully addressing, investor concerns over relevance.
On this issue, therefore, I encourage investors and other stakeholders to communicate with the PCAOB and to share their view on whether the PCAOB should move forward on the "Other Information" standard as a catalyst for a discussion of relevance. Write to us, ask for meetings with the staff or the Board. Also feel free to contact me directly – I am interested in hearing your thoughts.
And when you write, consider asking us to post your communications so that others can learn your thoughts and possibly participate in the conversation.
And maybe, just maybe, you will help prevent another extinction event.
 Based upon remarks made before Data Amplified 2019 Conference in Shanghai, China on October 24, 2019. I want to thank Jerry Ramirez, and Wintana Kiflu, interns in my office, for the research used in these remarks.
 For purpose of this speech, I use the term "meteor" when referring to the Mount Everest sized rocky object that struck the earth some 66 million years ago. The object may have technically been an asteroid, according to NASA guidance. See https://spaceplace.nasa.gov/asteroid-or-meteor/en/.
 See Margaret H. Christ, Scott A. Emett, Scott L. Summers & David A. Wood, Prepare for Takeoff: Improving Audit Efficiency and Effectiveness with Drone-enabled Inventory Audit Procedures, Mar. 2019.
 See Kexing Ding, Baruch Lev, Xuan Peng, Ting Sun & Miklos A. Vasarhelyi, Machin Learning Improves Accounting Estimates, May 16, 2019.
 The metaphor of weavers was borrowed from Jon Lukomnik. See Jon Lukomnik, Will accountants become the weavers of the 21st century?, Accountingtoday, Nov. 19, 2018.
 See Dale L. Flesher, Gary John Previts and William D. Samson, Auditing in the United States: A Historical Perspective, 41 ABACUS 21, 37 (2005) ("One could conclude that auditing arrived with the earliest colonists, was practices in colonial governments, moved to federal government and state government agencies after the Revolution, and then spread to private enterprises when outside investors of capital dictated the need for the audit of the annual reports of antebellum corporate managers.")
 Sidney Davidson and George D. Anderson, The Development of Accounting and Auditing Standards, J. of Accountancy 110, 113 (May 1987).
 See Chui, Lawrence and Pike, Byron, "Auditors' responsibility for fraud detection: New wine in old bottles?" (2013). Accounting Faculty, Publications. 56, at 208-09, available at https://ir.stthomas.edu/ocbacctpub/56 ("In the aftermath of the McKesson and Robbins scandal, auditors were required to perform additional audit procedures on accounts receivable and inventories").
 See Rule 10-01(d) of Regulation S-X, 17 CFR 210.10-01(d); see also Exchange Act Release No. 42266 (Jan. 10, 2000).
 Section 404(b) of the Sarbanes-Oxley Act of 2002.
 The requirement became effective for audit reports filed by large accelerated filers with fiscal years ended on or after June 30, 2019.
15 U.S.C. § 7211 (2002) (mission of PCAOB "to oversee the audit of companies that are subject to the securities laws …in order to protect the interests of investors and further the public interest . . .").
 Forrest Gump: original motion picture score, Alan Silvestri, (1994). New York: Sony Music Entertainment.
 Nerissa C. Brown, Shira Cohen & Adrienna A Huffman, Accounting Reporting Complexity and Non-GAAP Earnings Disclosure, Jan. 2019 (noting that "[s]ome stakeholders argue that non-GAAP disclosure is an attempt by firms to simplify the complex nature of GAAP accounting" and finding evidence "consistent with arguments that non-GAAP reporting reflects management's attempts to reduce the informational complexity of GAAP accounting.")
 Andrea Ribeiro, Yaowen Shan, and Stephen Taylor, Non-GAAP Earnings and the Earnings Quality Trade-Off, 55 ABACUS 6, 9 (2019) ("Compared to their closest GAAP equivalent, non-GAAP earnings have significantly higher predictive ability for future profitability, suggesting that items excluded from the calculation of non-GAAP earnings are largely transitory and help improve the ability of current period earnings to predict future performance.")
 Heflin, F., C. Hsu, and Q. Jin, Accounting Conservatism and Street Earnings, Review of Accounting Studies 20 (4): 674-709 (2015).
 See J. Robert Brown, Jr., "Grading the PCAOB: Transparency, Accountability, and Investor Protection," Remarks at the Fall Conference of the Council of Institutional Investors, Sept. 17, 2019, available at https://pcaobus.org/News/Speech/Pages/Brown-Grading-the-PCAOB-Transparency,-Accountability-and-Investor-Protection.aspx.
 Oliver Mehring, Jens Mueller, Soenke Sievers & Christian Sofilkanitsch, Non-GAAP Reporting and Investor Attention: Are Investors Misled by Exclusions of Recurring Expenses from Non-GAAP Earnings before Restatement Announcements?, Jul. 10, 2019 (making empirical findings consistent with other research proposing "that investors are misled by inappropriate non-GAAP adjustments").
 ASC 606 requires issuer's to disclose information about the transaction price allocated to remaining performance obligations, which some term as "backlog".
 Business and Financial Disclosure Required by Regulation S-K, Exchange Act Release No. 77599 (Apr. 13, 2016) ("Recent academic studies find that the industry-specific key factors disclosed by retailers and manufacturers provide incremental information that can help to predict registrants' future performance beyond traditional financial statement variables.").
 Dan Givoly, et al, Key Performance Indicators as Supplements to Earnings: Incremental informativeness, Demand Factors, Measurement Issuers, and Properties of Their Forecasts, Mar. 8, 2019 ("The lack of standards and regulation make KPI measurement also susceptible to manipulation.").
 XBRL has also facilitated academic research. See Nerissa C. Brown, Shira Cohen & Adrienna A Huffman, Accounting Reporting Complexity and Non-GAAP Earnings Disclosure, at n. 5, Jan. 2019 ("We also contribute to prior work on the usefulness of XBRL data in capital markets" with research that exploits "an XBRL-based measure of accounting complexity to better understand non-GAAP reporting practices.").
 See Tieshih Hsieh & Jean C. Bededard, Impact of XBRL on Voluntary Adopters' Financial Reporting Quality and Cost of Equity Capital, 15 Journal of Emerging Technologies in Accounting 45, 60 (2018) ("[o]ur findings imply that during the period of the Voluntary Filing Program, XBRL adopters with superior corporate governance utilized XBRL to improve reporting efficiency and internal decision-making processes, thus improving financial reporting quality and decreasing the cost of equity capital.").
 Exchange Act Release No. 83551 (Jan. 28, 2018). The requirement became effective for large accelerated filers in June 2019.
 Russell G. Golden, Chair, FASB, Why the FASB Cares about Non-GAAP Performance Measures, available at https://www.fasb.org/jsp/FASB/Page/SectionPage&cid=1176168752402 ("GAAP, or Generally Accepted Accounting Principles, is considered the 'gold standard' of financial reporting. For many decades now, it has been developed through a comprehensive and transparent standard-setting process—one through which the FASB solicits and considers views from a broad range of diverse stakeholders.")
 See AS 2710, available at https://pcaobus.org/Standards/Auditing/Pages/AS2710.aspx.
 The characterization of these metrics depends upon whether they are required under GAAP. Because they are required by GAAP, they are not treated as Non-GAAP when appearing in the footnotes to the financial statements. See ASC 280. To the extent they appear outside of the financial statements and footnotes, however, the metrics may be treated as Non-GAAP. See Compliance & Disclosure Interpretations of the SEC on Non-GAAP Financial Measures, last updated as of Apr. 4, 2018, available at https://www.sec.gov/divisions/corpfin/guidance/nongaapinterp.htm.
 See State of Sustainability and Integrated Reporting 2018, available at
https://www.weinberg.udel.edu/IIRCiResearchDocuments/2018/11/2018-SP-500-Integrated-Reporting-FINAL-November-2018-1.pdf ("Companies representing about 40 percent of the S&P 500 now include the concept of sustainability in annual reports or Forms 10-K. A total of 191 companies (38 percent) include discussions of corporate responsibility or sustainability in their proxy statements, beyond the traditional discussion of board governance and executive compensation.").
 See https://www.sec.gov/structureddata/osd-inline-xbrl.html ("Inline XBRL is a format that allows filers to embed XBRL data directly into a HyperText Markup Language (HTML) document so that filers need only prepare one Inline XBRL document rather than generate an HTML document of their financial statement information or risk/return summary information and then tag a copy of the data to create a separate XBRL exhibit.").
 See Exchange Act Release No. 83551 (Jan. 28, 2018) ("Several commenters recommended clarifying that financial statement information XBRL data under the new Inline XBRL requirement would not be subject to auditor assurance in order to address a potential 'expectations gap' that might arise if XBRL data is embedded in a document containing HTML financial statements subject to auditor assurance.").
 Jean C. Bedard, Steve G. Sutton, Vicky Arnold & Jillian R. Phillips, Another Piece of the "Expectations Gap": What Do Investors Know About Auditor Involvement with Information in the Annual Report, 6 Current Issues in Auditing A17, A28 (2012) ("Even among professional investors in this study, a considerable percentage of respondents either assume that unaudited information is audited, or are unsure of the correct answer.").
 See AS 2710, available at https://pcaobus.org/Standards/Auditing/Pages/AS2710.aspx.
 Report, Conclusions and Recommendations, An Independent Commission established by the American Institute of Certified Public Accountants (1978) (Cohen Commission), at 128, available at http://3197d6d14b5f19f2f440-5e13d29c4c016cf96cbbfd197c579b45.r81.cf1.rackcdn.com/collection/papers/1970/1978_0101_CohenAuditors.pdf ("For example, in January 1974, the chief accountant of the SEC requested consideration of the auditor's responsibility for other information in documents containing audited financial statements. The committee issued SAS No.8, Other Information in Documents Containing Audited Financial Statements, in December 1975. It provides guidance on matters such as the auditor's responsibility when data appearing in both the audited financial statements and other portions of an annual report are not consistent.").
 See Item 2.02 of Form 8-K.
 See Exchange Act Release No. 69279 (Apr. 2, 2013).
 See https://www.fsb-tcfd.org/publications/final-recommendations-report/.
 Shortly after adoption, the standard was described as "too limited." Report, Conclusions and Recommendations, An Independent Commission established by the American Institute of Certified Public Accountants, at xii (1978) (Cohen Commission), at 69, available at http://3197d6d14b5f19f2f440-5e13d29c4c016cf96cbbfd197c579b45.r81.cf1.rackcdn.com/collection/papers/1970/1978_0101_CohenAuditors.pdf ("The auditor now has a responsibility to read the other information in an annual report, but the extent of his work and his responsibility for reporting on the information are too limited.").
 Docket 034: Auditing Standards on the Auditor's Report and the Auditor's Responsibilities Regarding Other Information and Related Amendments, available at https://pcaobus.org/Rulemaking/Docket034/Release_2013-005_ARM.pdf.
 AS 3101.
 See Mark DeFond & Jieying Zhang, A review of archival auditing research, 58 J. of Accounting and Economics 275, 278 (2014) (expansion of assurance "raises many unanswered questions, such as whether assurance of non-financial information adds value, whether auditors' incentives and competence transfer to non-financial settings, and what audit means in these settings.")