AUGUST 28, 2026

Legal ESG — 2026-08-28

The defining ESG legal theme of this week is regulatory fragmentation — the simultaneous divergence of US and EU frameworks across disclosure, due diligence, and enforcement. The SEC has formally proposed rescinding its 2024 climate disclosure rule, reverting the US to principles-based obligations under existing materiality rules; meanwhile, the EU has finalized its revised CSRD and ESRS Delegated Act, narrowed in scope but hardening in substance, with the revised standards entering into force in November 2026. At the same time, the EU's Empowering Consumers for the Green Transition Directive goes live September 27 — bringing real penalties for unsubstantiated green marketing claims — while climate litigation globally set a new filing record in 2025, with courts across 62 countries increasingly treating climate risk as a boardroom legal obligation rather than a voluntary disclosure exercise. Law firms and corporate counsel advising multinational clients face a genuinely bifurcated compliance environment: less mandatory federal disclosure in the US, more stringent mandatory disclosure and due diligence in the EU, and accelerating greenwashing litigation on both sides of the Atlantic.

Regulation & Disclosure

SEC Formally Proposes Climate Disclosure Rescission — State Rules Fill the Vacuum

The SEC voted on May 29, 2026 to propose full rescission of its March 2024 Climate-Related Disclosure Rules, published in the Federal Register on June 3 with a public comment period that closed August 3. The proposal would eliminate all mandatory climate risk, GHG emissions, and financial statement climate metrics requirements for public companies — reverting issuers to existing, principles-based obligations under Regulation S-K and S-X, where material climate risks still must be disclosed. Importantly, Debevoise flagged that anti-fraud provisions continue to apply to any voluntary sustainability claim in SEC filings or sustainability reports, so the rescission does not remove legal risk for companies making affirmative climate statements. The practical compliance consequence is now state-level: California's SB 253 Scope 1 and 2 emissions reporting deadline has been shifted by CARB from August 10 to November 10, 2026, following withdrawal of the current rulemaking text — but the underlying law and obligation remain active, and multi-jurisdictional coordination is now the primary compliance challenge for US-listed companies operating across multiple state frameworks.

Source: SEC: Rescission of Climate-Related Disclosure Rules SEC Formally Proposes Climate Disclosure Rescission — Regulation & Disclosure SEC: Climate Disclosure Rescission Proposal ↗ · article: articles/2026-06-03-sec-climate-rescission.md · tags: Legal ESG, Legal Risk, Legal Operations

EU Revised ESRS Delegated Act Finalised — CSRD Scope Narrowed to 1,000+ Employees and €450M Turnover

The European Commission adopted the final revised European Sustainability Reporting Standards (ESRS) Delegated Act on July 3, 2026, following the Omnibus I Directive that entered into force in March 2026. The revised CSRD framework raises mandatory reporting thresholds dramatically: companies are now in scope only if they exceed 1,000 employees AND €450 million net annual turnover — a dual-criteria requirement that is expected to remove approximately 90% of the roughly 50,000 companies originally covered. Listed SMEs have been removed from scope entirely; Wave 2 companies first report in 2028 on fiscal year 2027; non-EU parent companies first report in 2029. However, the revised ESRS standards are substantively more rigorous within the narrowed scope — materiality-based disclosure, double materiality assessment, and limited assurance requirements remain mandatory. For US companies with EU subsidiaries or EU turnover exceeding €450 million, the new standards become effective November 20, 2026, and apply to financial years beginning January 1, 2027. Cooley's analysis confirms the revised ESRS are now effectively final and cannot be amended — preparation must begin now.

Source: Cooley: European Commission Adopts Revised EU CSRD Reporting Standards EU Revised ESRS Delegated Act Finalised — CSRD Scope Narrowed — Regulation & Disclosure Cooley: EU CSRD Revised Standards ↗ · article: articles/2026-07-21-eu-csrd-revised-esrs.md · tags: Legal ESG, Legal Risk, Legal Operations

Bloomberg: Korea and EU Advance ESG Disclosure Frameworks — Global Fragmentation Deepens

Bloomberg's August 2026 Global Regulatory Brief documents the accelerating global divergence in ESG disclosure mandates. South Korea's Financial Services Commission finalised a phased sustainability disclosure roadmap requiring statutory ESG reporting for large KOSPI-listed companies from 2028 (fiscal year 2027), with a civil/administrative/criminal liability safe harbor for the first three years. The EU finalised RTS under its ESG Ratings Regulation requiring providers to disclose methodology, data sources, governance structures, and conflict-of-interest management. These developments add to an already complex multi-jurisdictional disclosure environment: law firms advising multinational clients now need to coordinate US state-level climate rules (California SB 253, SB 261), EU CSRD obligations, ISSB-aligned disclosures in the UK and Singapore, and nascent Korean frameworks — with each jurisdiction's timing, scope, assurance, and liability rules varying materially. The practical implication: multi-jurisdictional ESG disclosure programs are now a standing coordination requirement rather than a project-based exercise.

Source: Bloomberg: August 2026 Global Regulatory Brief: ESG ratings, climate risk and sustainability disclosures Korea and EU Advance ESG Disclosure — Global Fragmentation Deepens — Regulation & Disclosure Bloomberg: August 2026 ESG Regulatory Brief ↗ · article: articles/2026-08-24-bloomberg-esg-regulatory-brief.md · tags: Legal ESG, Legal Risk, Legal Operations

Climate & Litigation

US Supreme Court to Hear Exxon-Suncor Appeal — Boulder Climate Suit Could Shape Dozens of Cases

The US Supreme Court agreed to hear ExxonMobil and Suncor Energy's bid to dismiss a climate lawsuit brought by Boulder, Colorado, seeking to hold the companies liable for climate-related disaster costs. Time's August 11 analysis described the forthcoming ruling as "landmark" — the court will determine whether local and state governments can sue fossil fuel companies for climate-related costs under state tort law, or whether such suits are preempted by federal law. The outcome will directly affect dozens of similar municipal climate lawsuits filed across the US, including cases brought by Baltimore, Honolulu, and multiple California counties. Exxon and Suncor's August 26 brief argued that allowing the case to proceed would set a precedent for juries to decide energy policy — a framing that signals the constitutional dimension of the litigation. For law firms with energy and environmental practices, the Boulder case is the most consequential pending climate liability ruling in the US, with implications for both downstream litigation exposure and the defensibility of fossil fuel company disclosures.

Source: Reuters: US Supreme Court to hear Exxon and Suncor bid to toss Boulder's climate suit Supreme Court to Hear Boulder Climate Suit — Dozens of Cases Hang on Ruling — Climate & Litigation Reuters: Supreme Court Boulder Climate Suit ↗ · article: articles/2026-08-26-boulder-climate-suit-scotus.md · tags: Legal ESG, Legal Risk, Legal Operations

Law Society England & Wales: Climate Is a Mainstream Legal Risk for In-House Counsel

The Law Society of England and Wales published new guidance on August 3, 2026 for in-house legal counsel on managing climate change risks, explicitly framing climate as a mainstream legal risk embedded in solicitors' existing professional duties — including the duty of care, duty to warn, duty to disclose, and duty to maintain professional competence. The guidance directs in-house lawyers to integrate climate risk into governance, transactions, procurement, reporting, and corporate communications, rather than treating it as a standalone ESG matter. Baker McKenzie and the World Economic Forum's April 2026 climate litigation report reinforces this message: litigation risk most often arises from "incoherence or gaps" between public climate commitments and operational reality, transition plans and capital allocation, or stated value chain expectations and actual oversight mechanisms. For GCs and in-house teams, the Law Society guidance creates a professional competence benchmark — failure to understand and manage material climate risk is now potentially a breach of professional duty, not merely a reputational or governance lapse.

Source: Linklaters Sustainable Futures: UK Law Society publishes new guidance for in-house lawyers on managing climate risks Law Society: Climate Is a Mainstream Legal Risk for In-House Counsel — Climate & Litigation Linklaters: UK Law Society Climate Guidance ↗ · article: articles/2026-08-03-law-society-climate-guidance.md · tags: Legal ESG, Legal Risk, Legal Operations

Supply Chain & Human Rights

CSDDD Implementation Guidelines Close for Comment — US Seeks Carveout for American Firms

The European Commission's public consultation on implementation guidelines for the Corporate Sustainability Due Diligence Directive (CSDDD) closed August 14, 2026, with submissions from civil society, unions, and business groups including IHRB and multiple international NGOs. The core debate: whether the guidelines anchor due diligence to the UN Guiding Principles on Business and Human Rights (requiring companies to focus on risks to people, not merely risks to the business) or tilt toward a lighter-touch risk-management framing. Reuters and Yahoo Finance reported that the US has formally sought a carveout exempting American firms from the CSDDD's supply chain obligations — a request that has generated significant pushback from civil society. The CSDDD's transposition deadline for EU Member States was July 26, 2026, and mandatory obligations for in-scope companies (>1,000 employees, >€450M turnover) are staggered from 2027 onward. Law firms advising multinational clients need to monitor both the guidelines content — which will operationalize the Directive's due diligence requirements — and the US government's negotiating position, which may affect how the Directive applies to American companies with EU operations.

Source: Business and Human Rights Resource Centre: EU/Global CSO partners contribute to CSDDD guidelines consultation CSDDD Guidelines Consultation Closes — US Seeks American Firm Carveout — Supply Chain & Human Rights BHRRC: CSDDD Guidelines Consultation ↗ · article: articles/2026-08-14-csddd-guidelines-consultation.md · tags: Legal ESG, Legal Risk, Legal Operations

South Korea Pushes Mandatory HRDD Law — Australia Adds Criminal Liability for Modern Slavery

Two significant jurisdictional developments in human rights due diligence this week signal that HRDD legislation is spreading beyond Europe. South Korea's National Human Rights Commission called for fast-tracking a mandatory corporate HRDD law, with two bills before parliament covering companies with 500+ full-time employees or 200 billion won ($144M) in sales. Australia's modern slavery law reform proposals go further: Allens' August 6 analysis documents a proposed civil penalty regime for non-compliance with existing modern slavery reporting obligations and a new criminal offence for companies with >$100M consolidated revenue that fail to prevent modern slavery in their operations and supply chains — with a "reasonable steps" defence available. These moves, combined with the UK House of Lords Private Members' Bill introduced June 17 imposing mandatory HRDD on organisations with £36M+ annual turnover, show that HRDD obligations are now a multi-jurisdictional compliance imperative. Global supply chain legal programmes that currently focus exclusively on EU CSDDD risk underestimating the cumulative obligations being built across APAC and Commonwealth markets.

Source: Allens: Keeping up with human rights due diligence in 2026 South Korea and Australia Advance HRDD — Criminal Liability Emerges — Supply Chain & Human Rights Allens: HRDD in 2026 ↗ · article: articles/2026-08-06-hrdd-korea-australia.md · tags: Legal ESG, Legal Risk, Legal Operations

Governance

Baker McKenzie/WEF: Climate Litigation Liability Now Extends to Entire Value Chain

Baker McKenzie and the World Economic Forum's April 2026 report, "Climate Litigation: From Compliance to Strategic Imperative," identified three governance trends now shaping how courts and regulators treat corporate climate obligations: expansion of liability beyond a company's own operations to its entire value chain; growing court scrutiny of whether climate transition plans are reflected in project approvals and capital investment decisions; and the rise of rights-based and duty-of-care claims that challenge how boards consider foreseeable climate risks. The report is explicit that climate litigation has "matured into being viewed as a systemic business risk" with direct implications for corporate strategy, governance, capital allocation, and market access — and that litigation risk most often arises from incoherence between public statements and operational or capital-allocation reality. Law firm governance practices advising boards and risk committees should now be incorporating climate litigation exposure into standard D&O risk assessments, transition plan review, and capital allocation governance frameworks.

Source: Baker McKenzie: Climate Litigation — From Compliance to Strategic Imperative Climate Litigation Liability Now Extends to Entire Value Chain — Baker McKenzie/WEF — Governance Baker McKenzie: Climate Litigation Report ↗ · article: articles/2026-04-23-bakermckenzie-climate-litigation-report.md · tags: Legal ESG, Legal Risk, Legal Operations

Enforcement & Greenwashing

EU Empowering Consumers Directive Applies from September 27 — 400+ Enforcement Actions Already in 2026

The EU's Empowering Consumers for the Green Transition Directive enters force across all 27 EU Member States on September 27, 2026 — just 30 days away — prohibiting generic environmental claims ("sustainable," "eco," "natural") without substantiation, restricting self-certified sustainability badges, and banning claims based solely on carbon offsetting. EU consumer protection authorities agreed a common enforcement approach in July, prioritising guidance and preventive steps before penalties, but making clear the rules apply from September 27 without a formal transition period. Against this backdrop, EcoAppraise's Global Greenwashing Enforcement Tracker documents more than 400 greenwashing-related enforcement actions globally in 2026 to date — with penalties, class actions, and criminal investigations all active across the EU, US, UK, Canada, and Australia. For law firms, the September 27 date creates an immediate client advisory obligation: environmental marketing claim inventories, removal of unsupported generic language, and documented evidence files for every material claim must be in place before the directive takes effect.

Source: EcoAppraise: Global Greenwashing Enforcement Tracker EU Greenwashing Directive Applies Sept 27 — 400+ Enforcement Actions in 2026 — Enforcement & Greenwashing EcoAppraise: Global Greenwashing Enforcement Tracker ↗ · article: articles/2026-08-27-eu-greenwashing-directive-enforcement.md · tags: Legal ESG, Legal Risk, Legal Operations

Delta Carbon-Neutrality Suit Survives Dismissal — Greenwashing Liability Expands to Offsets

A California federal judge rejected Delta Air Lines' bid to dismiss a class action lawsuit challenging its carbon neutrality advertising claims on August 17, allowing the suit to proceed on the grounds that Delta's marketing statements may violate California's advertising statutes. The case, originally filed in 2023, turns on whether Delta's reliance on carbon offset credits to claim carbon neutrality constitutes a false or misleading representation. The ruling matters beyond aviation: it establishes that carbon-offset-backed sustainability claims are subject to the same consumer protection scrutiny as direct product claims, and that "carbon neutral" is not a safe harbour statement. The ESG Litigation Weekly tracker also noted that ACCR withdrew its appeal in the Santos greenwashing case in Australia this week, suggesting strategic recalibration in shareholder-led ESG litigation. Taken together, the Delta ruling and the incoming EU ban on offset-based green claims signal that carbon offset communications require immediate legal review across all marketing and investor-facing materials.

Source: Skift: Lawsuit Against Delta Raises a Bigger Question: How Airlines Use Carbon Offsets Delta Carbon-Neutrality Suit Survives — Offset-Based Claims Under Legal Scrutiny — Enforcement & Greenwashing Skift: Delta Greenwashing Carbon Offsets ↗ · article: articles/2026-08-17-delta-greenwashing-carbon-neutral.md · tags: Legal ESG, Legal Risk, Legal Operations

Law Firm ESG Practice

Hogan Lovells Appoints New Global Head of Sustainability — ESG Practice Leadership Investment Continues

Hogan Lovells appointed Dr. Marion Palmer as its new Head of Global Sustainability, Policy and Strategy, announced August 13. The hire reflects a sustained investment across major law firms in dedicated ESG practice leadership: Kirkland & Ellis has built a global Sustainability Practice Group focused specifically on reducing litigation and enforcement exposure; Morgan Lewis launched a Summer 2026 ESG Investing Update practice alert series; and Legal 500's 2026 ESG Awards shortlisted A&O Shearman as Best Law Firm Advisory Team in ESG Regulatory and Compliance. The ESG litigation tracking environment — with Alston & Bird, Morgan Lewis, and Kirkland all maintaining dedicated enforcement trackers — signals that firms view ESG as a standing litigation and regulatory risk category requiring specialist infrastructure, not a transient advisory practice. Law firms without dedicated ESG practice leadership and litigation tracking capability are increasingly at a competitive disadvantage in the GC and in-house market, where climate and ESG risk management is now embedded in standard retainer work.

Source: Hogan Lovells: Climate, Sustainability & ESG Lawyers Hogan Lovells Appoints New Global Sustainability Head — ESG Practice Investment Continues — Law Firm ESG Practice Hogan Lovells: ESG Practice ↗ · article: articles/2026-08-13-hogan-lovells-sustainability-head.md · tags: Legal ESG, Legal Risk, Legal Operations

Upcoming Events

EU Empowering Consumers for the Green Transition Directive — Applies September 27, 2026. Immediate client advisory deadline for environmental marketing claim review.
California SB 253 Scope 1 & 2 Reporting — Deadline shifted to November 10, 2026. CARB rulemaking text withdrawn; revised regulation pending.
EU CSRD Revised ESRS — Enter into force November 20, 2026, applying to financial years beginning January 1, 2027.
CSDDD Transposition — EU Member State transposition deadline was July 26, 2026; staggered company obligations begin 2027.
US Supreme Court — Boulder Climate Suit — Oral argument expected fall 2026; ruling will determine scope of municipal climate liability actions.
Inside Legal ESG — London/New York — Inside Practice events on ESG practice development and regulatory fragmentation strategy. insidepractice.com

Inside Practice · Legal ESG · Week of 2026-08-21 to 2026-08-28