The Harvard Law School Forum on Corporate Governance https://corpgov.law.harvard.edu The leading online blog in the fields of corporate governance and financial regulation. Sun, 26 Apr 2026 11:30:51 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.8 https://corpgov.law.harvard.edu/wp-content/uploads/2024/02/cropped-photography-4-e1706898544564-1-32x32.png California Climate Disclosure Law SB 261 Implementation Halted: Ninth Circuit Grants Injunction Pending Appeal – The Harvard Law School Forum on Corporate Governance https://corpgov.law.harvard.edu 32 32 California Climate Disclosure Law SB 261 Implementation Halted: Ninth Circuit Grants Injunction Pending Appeal https://corpgov.law.harvard.edu/2025/12/03/california-climate-disclosure-law-sb-261-implementation-halted-ninth-circuit-grants-injunction-pending-appeal/?utm_source=rss&utm_medium=rss&utm_campaign=california-climate-disclosure-law-sb-261-implementation-halted-ninth-circuit-grants-injunction-pending-appeal https://corpgov.law.harvard.edu/2025/12/03/california-climate-disclosure-law-sb-261-implementation-halted-ninth-circuit-grants-injunction-pending-appeal/#respond Wed, 03 Dec 2025 12:30:43 +0000 https://corpgov.law.harvard.edu/?p=177965?d=20251202161959EST Posted by Stephanie Hurst, Paul de Bernier, and Dario Frommer, Mayer Brown, on Wednesday, December 3, 2025
Editor's Note:

Stephanie Hurst, Paul de Bernier, and Dario Frommer are Partners at Mayer Brown LLP. This post is based on a Mayer Brown memorandum by Ms. Hurst, Mr. de Bernier, Mr. Frommer, and McKaela Broitman.

We know our clients have been following California’s climate-disclosure laws closely – including the timing of effectiveness and the various legal challenges. This update relates to a new Ninth Circuit ruling that has effectively hit “pause” on one key pillar of California’s climate-disclosure package.

On November 18, 2025, the Ninth Circuit Court granted a partial injunction blocking enforcement of California’s climate-related financial risk disclosure law – SB 261. Notably, the green house gas emissions reporting law under SB 253 remains in effect, with CARB, in its most recent presentations to the public, proposing August 10, 2026 as the deadline for initial SB 253 disclosures.

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