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ARTICLE · 11 SEPTEMBER 2025

Colorado And Washington State Antitrust Premerger Notification Filing Requirements Are In Effect

Hogan Lovells Cadwalader
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Broad state-level premerger notification requirements are now in effect in Colorado (as of August 6, 2025) and Washington State (as of July 27, 2025). Any person that files a Hart-Scott-Rodino...

United StatesAntitrust/Competition Law
Bilal Sayyed
Bilal Sayyed
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Broad state-level premerger notification requirements are now in effect in Colorado (as of August 6, 2025) and Washington State (as of July 27, 2025). Any person that files a Hart-Scott-Rodino (“HSR”) Act Notification and Report Form (“HSR Form”) with the Federal Trade Commission (“FTC”) and the Department of Justice (“DOJ”) must also submit an electronic copy of their HSR Form to the Colorado or Washington State Attorney General (as applicable) if the person filing an HSR Form meets certain state-specific jurisdictional tests.

Colorado State Premerger Notification Act's Jurisdictional Requirements

Colorado's Antitrust Premerger Notification Act sets forth two (2) alternative jurisdictional tests that trigger the state notice requirement for persons subject to the HSR Act's filing requirements:

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