CA SB25

Requires persons filing federal Hart-Scott-Rodino premerger notifications to also file copies with the California Attorney General within one business day if they have their principal place of business in California or have California net sales of at least 20% of the federal filing threshold

Imposes filing fees of $1,000 for companies headquartered in California and $500 for companies meeting the sales threshold, with fees adjustable every five years for inflation

Authorizes civil penalties of up to $25,000 per day for noncompliance after written notice and a three-business-day cure period

Prohibits the Attorney General from publicly disclosing filed materials, which are exempt from the California Public Records Act, though information may be shared with federal antitrust agencies or other states with equivalent confidentiality protections

Applies only to premerger notifications filed on or after January 1, 2027