California Enacts “Mini-HSR” Law, Joining Washington and Colorado

On February 10, California became the latest state to enact a “mini-HSR” law when Governor Newsom signed Senate Bill No. 25 (SB 25)—the California Uniform Antitrust Premerger Notification Act—into law. This legislation, which will go into effect on January 1, 2027, requires certain parties filing premerger notifications under the federal Hart-Scott-Rodino (HSR) Act to additionally … Continued