California climate disclosure law updates—June 2026 - JD Supra
California's climate disclosure laws (SB 253 and SB 261) have been updated as of June 2026, with new requirements for scope 3 emissions reporting and assurance deadlines. The updates align with SEC climate rule and CSRD, affecting public and large private companies operating in California.
Aforeworn detected this change in the ESG & Climate Disclosure space on July 6, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated High urgency. Public companies, large private filers (revenue >$1B), sustainability consultants, EU-market exporters should confirm how it applies to their specific situation before acting. There is a time constraint attached: Reporting for FY 2026 due by 2027; assurance deadlines vary by entity size.. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors ESG & Climate Disclosure continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.
What changed
Updated scope 3 emissions reporting requirements and assurance deadlines under SB 253 and SB 261, with alignment to SEC and CSRD standards.
Who it affects
Public companies, large private filers (revenue >$1B), sustainability consultants, EU-market exporters
What you must do
Review and update GHG inventory to include scope 3 emissions, engage assurance providers, and ensure compliance with new reporting timelines.
Deadline
Reporting for FY 2026 due by 2027; assurance deadlines vary by entity size.
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- Climate Disclosure Update: Six Weeks to Go Before California’s First GHG Emissions Reporting Deadline Approaches - JD Supra
- California Pushes Back Deadline for First Corporate Climate Reports to November - ESG Today
- Datamaran Launches New Tools to Support CSRD, ISSB Compliance, Governance - ESG Today
- California Sets August 2026 Deadline for First Corporate Climate Reports - ESG Today
- California Climate Disclosure Rules, ESG Compliance and Scope 3 Reporting Risks [Podcast] - The National Law Review