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ARTICLE · 31 JULY 2025

New State Notification Requirements For Mergers And Acquisitions

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Starting next week, certain mergers and acquisitions will have to be notified not only to federal antitrust authorities, but to some state enforcers, as well.

United StatesAntitrust/Competition Law
Gail F. Levine
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Lauren E. Knudson
Lauren E. Knudson
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Jacob Rose
Samuel Tope-Ojo
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Starting next week, certain mergers and acquisitions will have to be notified not only to federal antitrust authorities, but to some state enforcers, as well.

This year, Washington and Colorado became the first states to pass legislation requiring parties filing a Hart Scott Rodino ("HSR") Form with the federal government to submit a copy to the state attorney general, regardless of the industry at issue, if the filing party has a certain connection to the state. On July 27, the Washington law will become the first of such laws to go into effect. The Colorado law will go into effect on August 6. State attorneys general may seek a penalty of up to $10,000 per day for noncompliance.

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