ExxonMobil Sues California Over Climate Disclosure Regulations

ExxonMobil Challenges California's Climate Laws in Federal Court

ExxonMobil has initiated legal action against the state of California, filing a lawsuit in the U.S. District Court for the Eastern District of California on Friday, October 24, 2025. The lawsuit targets two recently enacted climate disclosure regulations, Senate Bill 253 and Senate Bill 261, arguing they infringe upon the company's constitutional rights.

The oil and gas corporation contends that these laws compel speech and force it to 'trumpet California's preferred message' even when ExxonMobil believes the information is 'misleading and misguided.' This legal challenge comes as California continues to assert a leading role in climate policy within the United States.

Details of the Challenged Regulations

The two state Senate bills at the center of the dispute were enacted in 2023 and are designed to increase corporate transparency regarding climate impact and financial risks.

• Senate Bill 253 (Climate Corporate Data Accountability Act): This law mandates that public and private companies with annual revenues exceeding $1 billion, and operating in California, publicly disclose their greenhouse gas emissions across three 'scopes.' Reporting for Scope 1 (direct emissions) and Scope 2 (indirect emissions from purchased energy) is set to begin in 2026, while Scope 3 (emissions from the supply chain, including product use and employee travel) reporting will start in 2027.
• Senate Bill 261 (Climate-Related Financial Risk Act): This regulation requires companies with annual revenues over $500 million to disclose climate-related financial risks and outline their strategies for mitigation. The first reports under SB 261 are due by January 1, 2026.

ExxonMobil's complaint, a 30-page document, names California Attorney General Rob Bonta, Air Resources Board chair Lauren Sanchez, and executive officer Steven S. Cliff, among others, as defendants.

ExxonMobil's Legal Arguments and California's Stance

ExxonMobil's primary argument centers on the First Amendment, asserting that the laws compel the company to engage in speech it disagrees with and to speculate about 'unknowable future developments.' The company also claims that the regulations unfairly target large corporations and disproportionately assign blame for climate change. Furthermore, ExxonMobil suggests that SB 261 may conflict with existing federal securities laws enforced by the U.S. Securities and Exchange Commission (SEC), which already govern environmental and financial risk disclosures for publicly listed firms.

In response, a spokesperson for California Governor Gavin Newsom stated that the laws have been upheld in court and expressed continued confidence in them. The spokesperson also remarked that it was 'truly shocking that one of the biggest polluters on the planet would be opposed to transparency.' California officials maintain that these disclosure laws are crucial for public transparency and investor protection, enabling stakeholders to better assess the financial and environmental impacts of climate change.

Broader Implications

The lawsuit reflects a growing tension between corporate entities and states implementing stringent climate regulations. While some major corporations, including Apple, Ikea, and Microsoft, have supported California's disclosure laws, other significant groups like the American Farm Bureau Federation and the U.S. Chamber of Commerce have opposed them, labeling them 'onerous.' The outcome of this legal challenge could establish a significant precedent for climate transparency regulations across the United States and potentially influence similar frameworks globally.