News & Analysis as of

New Legislation Mergers Hart-Scott-Rodino Act

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

Vinson & Elkins LLP

“Mini-HSR Acts” Multiply in the States; Merger Enforcement Developments in Washington, Colorado and More

Vinson & Elkins LLP on

Parties to transactions should be aware of new requirements for state-level merger reporting – so-called “mini-HSR Acts” – modeled on the Uniform Antitrust Pre-Merger Notification Act (“UAPNA”). Washington and Colorado have...more

Paul Hastings LLP

New Mini-HSR Laws Take Effect This Summer

Paul Hastings LLP on

Starting Sunday, July 27, 2025, any party to an M&A transaction that triggers a federal Hart-Scott-Rodino (HSR) Act filing must also submit a copy to the Washington attorney general if the filing party (1) maintains a...more

Miles & Stockbridge P.C.

Washington State Enacts First Uniform Antitrust Premerger Notification Act

On April 4, Washington became the first state to enact the Uniform Antitrust Premerger Notification Act (APNA). Under the APNA, a person making a Hart-Scott-Rodino (HSR) filing on or after July 27, 2025 must provide a copy of...more

Stinson LLP

Colorado Joins the "Baby" HSR Trend

Stinson LLP on

State attorneys general (AGs) have a legal right to challenge anticompetitive mergers, both under the federal Clayton Act and their own state antitrust laws. And in recent years, state AGs have played increasingly larger...more

Bass, Berry & Sims PLC

Colorado Enacts "Mini-HSR" Law, Joining Growing State-Level Premerger Filing Trend

On June 4, Colorado became the second state to adopt the Uniform Antitrust Premerger Notification Act (Act) when Governor Jared Polis signed SB25-126 into law. Like Washington’s version of the Act, Colorado’s new law imposes...more

Axinn, Veltrop & Harkrider LLP

State by State, Pre-Merger Notifications Expand

In the wake of the recent major revisions to the federal merger review form, states are also getting into the act, creating broad new transaction notification requirements. Such notification requirements are not completely...more

Latham & Watkins LLP

Washington Introduces State-Level Merger Notification Rules

Latham & Watkins LLP on

States’ merger review and enforcement initiatives continue to expand as Washington adopts the nation’s first “mini-HSR” rule. On April 4, 2025, the State of Washington passed the Antitrust Premerger Notification Act...more

Bass, Berry & Sims PLC

Washington Enacts “Mini-HSR” Law, Expanding State-Level Premerger Filing Requirements

Bass, Berry & Sims PLC on

On April 4, Washington became the first state to adopt the Uniform Premerger Notification Act (Act) when Washington Governor Jay Inslee signed the bill into law. The new statute imposes state-level premerger filing...more

White & Case LLP

Washington Becomes First State to Enact “Uniform Antitrust Pre-Merger Notification Act”

White & Case LLP on

On April 4, 2025, Gov. Bob Ferguson of Washington state signed S.B. 5122, making Washington the first state to enact the Uniform Law Commission’s “Uniform Antitrust Pre-Merger Notification Act.” Overview of the New...more

WilmerHale

Washington Enacts Broad Premerger Notification Law: The Cutting Edge of State Merger Review

WilmerHale on

On April 4, 2025, Washington became the first state to enact the Uniform Antitrust Premerger Notification Act (Model Act), requiring parties to certain notifiable transactions under the Hart-Scott-Rodino Antitrust...more

Stinson LLP

Washington State First to Adopt "Baby HSR" Act

Stinson LLP on

Legislatures in several states have recently introduced bills that would require certain parties who submit Hart-Scott-Rodino (HSR) premerger filings to the federal government to provide that same information to the state. On...more

Holland & Knight LLP

Baby HSRs: States Are Modeling Laws After Federal Act to Investigate More Transactions

Holland & Knight LLP on

In a growing trend, states are enacting laws modeled after the federal Hart-Scott-Rodino (HSR) Act, which requires parties to proposed transactions that satisfy certain reporting thresholds to first provide information to the...more

Smith Anderson

New Legislation Will Lead to Increased HSR Merger Filing Fees for Larger Deals in 2023

Smith Anderson on

On December 29, 2022, President Biden signed into law the Merger Filing Fee Modernization Act of 2022 (the MFFMA), which will modify the current structure of merger filing fees payable under the Hart-Scott-Rodino (HSR) Act...more

Sheppard Mullin Richter & Hampton LLP

New Law Substantially Increases HSR Filing Fees for Large Transactions

On Dec. 29, 2022, President Biden signed into law H.R. 2617, the “Consolidated Appropriations Act, 2023.” Included within H.R. 2617 is The Merger Filing Fee...more

Latham & Watkins LLP

US Legislation Implements New Filing Fees, Adds Foreign Subsidy Disclosure Requirements to HSR Rules

Latham & Watkins LLP on

Congress passes the Merger Filing Fee Modernization Act of 2022, changing Hart-ScottRodino Act filing fees and adding disclosure requirements for certain foreign subsidies. On December 23, 2022, as part of a broader...more

A&O Shearman

Significant US HSR Filing Fee Changes Under The Merger Filing Fee Modernization Act

A&O Shearman on

On December 29, 2022, President Biden signed into law The Consolidated Appropriations Act of 2023 also known as The Omnibus Funding Bill (the “Bill”). The Bill includes the Merger Filing Fee Modernization Act which provides...more

Fenwick & West LLP

Congress’s Year-end Spending Bill Significantly Increases US Merger Control Filing Fees for Large M&A Transactions

Fenwick & West LLP on

On December 23, 2022, Congress passed the Consolidated Appropriations Act of 2023 (the “Act”) with bipartisan support. In addition to numerous spending provisions totaling $1.7 trillion, the Act includes antitrust-related...more

McDermott Will & Schulte

The Latest: Health Care Transactions Will Require Advance Notice to Washington State AG

What Happened: • On May 7, 2019, Governor Jay Inslee of Washington State signed House Bill 1607 into law. The law goes into effect for transactions closing after January 1, 2020, and requires advance notice to the...more

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