News & Analysis as of

Reporting Requirements Premerger Notifications State Attorneys General

Skadden, Arps, Slate, Meagher & Flom LLP

Pre-Merger Notification Proliferation

What is new: Some U.S. states have enacted pre-merger notification regimes of general applicability, requiring parties making HSR filings to also notify state attorneys general, with similar legislation pending in other...more

Miles & Stockbridge P.C.

Colorado Becomes Second State to Enact Uniform Antitrust Premerger Notification Act

On Aug. 6, Colorado became the second state to enact the Uniform Antitrust Premerger Notification Act (APNA), following Washington earlier this year. ...more

Clark Hill PLC

Colorado and Washington’s new UAPNA reporting requirements: What M&A dealmakers need to know about these groundbreaking laws

Clark Hill PLC on

Colorado and Washington have enacted groundbreaking laws modeled after the Uniform Law Commission’s Uniform Antitrust Pre-Merger Notification Act (UAPNA), requiring parties to certain Hart-Scott-Rodino Act (HSR) reportable...more

Cozen O'Connor

Washington and Colorado Enact Uniform Premerger Notification Laws: What Businesses Need to Know About The New Era in State AG...

Cozen O'Connor on

As of July 27, Washington State is now the first state to enact a uniform antitrust premerger notification law, and as of August 6, 2025, Colorado will be the second. Both new notification laws are similar, as they are...more

Fenwick & West LLP

Washington Becomes First State to Enact ‘Mini HSR’ Notification Requirement

Fenwick & West LLP on

As of July 27, 2025, federal Hart-Scott-Rodino (HSR) Act filings will also need to be submitted to the Washington Attorney General (WA OAG) under Washington State’s Antitrust Premerger Notification Act (APNA) if the parties...more

McDermott Will & Schulte

Washington State Enacts Merger Review Regime

Washington is the first state to enact the Uniform Antitrust Premerger Notification Act, which requires merging parties that submit a federal filing under the Hart-Scott-Rodino (HSR) Act (15 U.S.C. Sec. 18(a)) to also submit...more

Goodwin

Washington Becomes First State to Adopt Filing Requirements for HSR-Reportable Transactions Outside of Healthcare

Goodwin on

On April 4, 2025, Washington became the first state to enact a law requiring a general pre-merger notification of HSR-reportable deals to state enforcers, regardless of industry....more

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