--- title: How to Write a Sustainability Report Investors Actually Read description: Learn how scope, materiality, governance and one consistent dataset help you write a sustainability report investors can use to assess financial value and risk. image: https://pages.thirdeconomy.com/hubfs/activism%20defence%20link%20graphic%20with%20logo.jpg --- [![Third-Economy-logo-horizontal-1](https://pages.thirdeconomy.com/hs-fs/hubfs/Third-Economy-logo-horizontal-1.png?width=1500&height=381&name=Third-Economy-logo-horizontal-1.png "Third-Economy-logo-horizontal-1")](https://www.thirdeconomy.com/) [SUSTAINABILITY SERVICES](https://www.thirdeconomy.com/corporate-services/) [INVESTOR SERVICES](https://www.thirdeconomy.com/investor-services/) [VIA3](https://www.thirdeconomy.com/ratings/) [ABOUT](https://www.thirdeconomy.com/about/) [NEWS & EVENTS](https://www.thirdeconomy.com/news-events/) [CONTACT](https://www.thirdeconomy.com/contact/) ![Thought Leadership Webpage Graphic-1](https://pages.thirdeconomy.com/hubfs/Thought%20Leadership%20Webpage%20Graphic-1.png "Thought Leadership Webpage Graphic-1") # How to Write a Sustainability Report Investors Actually Read ***By Third Economy, October 2026*** The revised European Sustainability Reporting Standards landed on September 21, 2026, California’s first SB 253 reports are due this November and the SEC climate rule is still tied up in court. The reporting calendar has never been busier. Yet publication is no longer the milestone it used to be. [G&A Institute’s 2026 study](https://ga-institute.com/research/reporting-trends/2026-sustainability-reporting-in-focus/) found that 94% of S&P 500 companies and 86% of Russell 1000 companies published a sustainability report for the 2025 reporting year, which means nearly every large US public company already files one. Publishing proves little on its own. What matters now is whether investors can rely on what you publish, and the evidence says many are not. In [Morgan Stanley’s 2026 survey](https://www.morganstanley.com/insights/articles/sustainable-signals-institutional-investors-2026) of more than 900 institutional investors, 64% named data availability and consistency a very significant issue, up from 47% the year before. Concern about disclosure burden fell while concern about data quality rose. For companies, that means the risk is no longer underreporting. It is publishing a report investors cannot use, and losing the lower cost of capital and investor support that a useful report earns. There is a clear financial benefit in closing that gap. After 15 years at BlackRock, helping build Investment Stewardship and Sustainable Investing, and years at PJT CamberView advising companies on investor engagement, we have seen what gets read, what gets skipped and what happens when the numbers do not hold. ## What Investors Overlook Four omissions show up repeatedly. A reader can spot each of them in minutes. **Commitments with no number attached.** A pledge or a target with no metric to measure it against. **Process with no outcome.** A description of how the company manages an issue, with no evidence of what changed. **Metrics with no context.** A figure disclosed without a boundary, a method or a prior year to compare it to. **No accountable owner.** No named individual, no committee with oversight and no escalation route when a question arises about something the company disclosed. The fourth does the most damage. It tells the reader that nobody is watching, and it colors everything else in the document. All four have the same root cause: they come from deciding what to disclose before deciding what a reader needs to do with it. Three decisions, made early, can mitigate these random acts of disclosure. ## How to Write a Sustainability Report: Three Decisions That Determine Whether It Gets Read Reporting requirements tell you what you must publish. They are a starting point, not a roadmap for the reader. Each of the decisions below gets harder to change once drafting is underway, which is why they are worth settling early and in order. ### 1. Settle Scope Before Anyone Drafts Before anyone writes a sentence, agree on what the report covers. That means settling which entities are in, how you treat the value chain and whether this is a voluntary report or a response to a named requirement. The usual failure is scope by consensus. A document that covers everything a little covers nothing well. A narrow boundary you can defend is worth more than a broad one you cannot. ### 2. Treat Materiality as a Risk Exercise Double materiality asks two questions. Where does the company affect people and the environment? Where could sustainability factors affect financial position, cash flows or cost of capital? Investors are trying to answer the second one. So build it with the people who own enterprise risk, not with communications alone. Reuse what you already have, whether that is risk registers, climate scenario work or last year's investor questions. And disclose the decision rule, not only the matrix. Readers want to know why something was left out as much as why it made the list. Then describe the governance around it, because the committee that owns each issue, the cadence at which it reviews progress and the person who signs off before publication are all part of the answer. Analysts and stewardship teams read that as evidence of who would notice if a number were wrong. ### 3. Build One Dataset and Use It Everywhere A target with a baseline, a trajectory and a stated cost is something investors can hold you to. Without all three it is an aspiration. Most reports stop a step short and leave out the mechanism, which happens to be the part an analyst can test. Where you can support it, show how the issue reaches the financials. A physical risk lands in facilities, insurance and downtime. A workforce issue lands in retention and operating cost. State the assumption and its limits, because overstated precision is worse than an honest range. Compensation is the clearest evidence of whether management takes any of this seriously. If a target sits behind executive pay, say so. If it does not, do not imply that it does. Then get more from the same work. The same sustainability dataset that fills the report can inform the proxy, the earnings commentary and the investor deck. Build once, deploy everywhere, and the marginal cost of each additional disclosure falls toward zero. A third economy is one where making money and making the world better are aligned, and disclosure is where that alignment becomes visible to the market. The report is not the goal. It is the evidence. ## Meanwhile, the Rules Are Getting Lighter The counterintuitive part is that the burden is falling while expectations rise. The EU has cut required datapoints in the ESRS by roughly 61%, and the revised standards apply to financial years beginning on or after January 1, 2027. Read that as a reduction in paperwork, not in scrutiny. If an issue is material to your business, a framework no longer mandating a datapoint does not stop investors asking about it. Our summary of the [revised ESRS](https://pages.thirdeconomy.com/eu-finalized-revised-esrs?hsLang=en) covers what changed. Our [California update](https://pages.thirdeconomy.com/carb2026reportingguide?hsLang=en) tracks the state-level picture for US companies. A lighter framework puts more weight on judgment. Judgment is what a reader is assessing. ## Questions We Hear Most About Sustainability Reporting **What is a double materiality assessment?** It identifies sustainability issues that are material either because of the company's impact on people and the environment, or because of their effect on financial position, cash flows or cost of capital. Under ESRS, both perspectives are required. **Why does governance matter in a sustainability report?** Because it explains who is accountable. Investors want to know which committee owns each material issue, how performance reaches the board and whether pay is tied to the targets reported. **When should a company start work on its report?** Scope, materiality and metric ownership should be settled before drafting begins. Each is hard to reverse late, and each shapes the figures a reader will compare year over year. ## The Bottom Line In short, a sustainability report that satisfies every requirement and answers no investor question is an expense, and you are leaving profit on the table. One that answers the questions before they are asked is an asset, and in a year when the rules are getting lighter rather than heavier, that is where the difference in valuation sits. If we can be helpful as you navigate your next reporting cycle, please don't hesitate to reach out and [contact our team](https://www.thirdeconomy.com/contact/). *Disclaimer: The information provided does not, and is not intended to, constitute legal advice; instead, all information, content, and materials available are for general informational purposes only.* [Contact our team](https://www.thirdeconomy.com/contact/) ### Want to receive our latest news and events? [Sign up here](https://www.thirdeconomy.com/contact/) --- ![Logo-1](https://pages.thirdeconomy.com/hs-fs/hubfs/Logo-1.png?width=200&height=47&name=Logo-1.png "Logo-1") #### CONTACT ## Third Economy is a sustainable investment research and consulting firm. We work with corporations and institutional investors to understand how sustainability factors impact financial value. Our clients leverage this understanding to enhance and promote their own capabilities, thus building a more sustainable economy, a third economy.   370 7th St Suite 9, San Francisco, CA 94103   +1 415 935-0030   [Click here for business inquiries](https://www.thirdeconomy.com/contact/)   [info@thirdeconomy.com (all other inquiries)](mailto:info@thirdeconomy.com) --- 2024 Third Economy, Inc. All rights Reserved. [SUSTAINABILITY POLICY](https://www.thirdeconomy.com/wp-content/uploads/2023/09/3ECON-sustainability-policy.pdf) [DIVERSITY POLICY](https://www.thirdeconomy.com/wp-content/uploads/2023/09/3ECON-diversity-policy.pdf) [TERMS AND CONDITIONS](https://www.thirdeconomy.com/terms-and-conditions/) [PRIVACY POLICY](https://www.thirdeconomy.com/privacy-policy/) [COPYRIGHT POLICY](https://www.thirdeconomy.com/copyright-policy/) [SITEMAP](https://www.thirdeconomy.com/sitemap/)