On December 9, 2025, the California Air Resources Board (CARB) released a rulemaking package for its proposed “initial regulation” to implement California’s landmark climate disclosure laws: Senate Bill (SB) 253, requiring annual reporting of Scope 1, Scope 2, and Scope 3 greenhouse gas (GHG) emissions, and SB 261, requiring the disclosure of climate-related financial risks. CARB also announced an in-person and virtual public hearing on the proposed rule to be held during the board’s regularly scheduled meeting on February 26, 2026.