SB 253 Update: CARB Delays Reporting Deadline to November 2026 and Proposes to Clarify Requirements - Sidley Austin
California Air Resources Board (CARB) delays SB 253 reporting deadline to November 2026 and proposes clarifications, giving businesses more time but requiring continued preparation.
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 Medium urgency. Public companies and large private filers subject to SB 253 (Climate Corporate Data Accountability Act) in California. should confirm how it applies to their specific situation before acting. There is a time constraint attached: November 2026 (new reporting deadline).. 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
Reporting deadline extended from 2025 to November 2026; CARB proposes clarifications on scope 3 emissions and assurance requirements.
Who it affects
Public companies and large private filers subject to SB 253 (Climate Corporate Data Accountability Act) in California.
What you must do
Adjust compliance timelines and continue preparing GHG inventories and assurance processes.
Deadline
November 2026 (new reporting deadline).
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