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Antitrust Provisions Filing Requirements

Snell & Wilmer

Washington and Colorado Enact Groundbreaking State-Level Merger Notification Requirements, With Other States Likely To Follow

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Washington was the first state to adopt the Uniform Antitrust Pre-Merger Notification Act. Signed into law in April 2025 and effective as of July 27, 2025, the Washington law establishes new premerger filing requirements for...more

Paul Hastings LLP

New Mini-HSR Laws Take Effect This Summer

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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

BakerHostetler

State-Level Merger Scrutiny Grows: Washington, Colorado Lead Expansion of State Premerger Notification Laws

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Earlier this year, Washington state enacted a version of the nascent Uniform Antitrust Pre-Merger Notification Act (the Uniform Act), which is slated to take effect on July 27....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

White & Case LLP

The transition to mandatory merger control in Australia – key parameters of the new regime

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Australia's transition from a voluntary to a mandatory merger regime has formally commenced. Mandatory approval of transactions that meet notification thresholds is required from 1 January 2026. To facilitate the transition,...more

Ballard Spahr LLP

Washington State Merger Notification Requirements Start This Month

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Are you contemplating a merger or acquisition with a connection to Washington State? Effective July 27, 2025, any transaction requiring pre-notification under the federal Hart-Scott-Rodino Antitrust Improvements Act of 1976...more

Baker Botts L.L.P.

Referrals under Article 22 EUMR — Levels of information required to kick off the statutory deadline for referral by an NCA

Baker Botts L.L.P. on

On 2 July 2025, the Court of Justice of the European Union (General Court) clarified that simply "informing" the authorities of a proposed concentration isn’t enough to kick off the 15-working-days time limit under which a...more

Stinson LLP

Colorado Joins the "Baby" HSR Trend

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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

K&L Gates LLP

Colorado Enacts Uniform Antitrust Pre-Merger Notification Law

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On 4 June 2025, Colorado became the second state—following the state of Washington—to enact a broad, state-level, industry-agnostic premerger notification regime. Under Colorado’s new law, any party that submits a filing...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

McGuireWoods LLP

Washington, Colorado First States to Enact Uniform Antitrust Pre-Merger Notification Act

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Washington and Colorado are the first two states to pass laws requiring certain parties to affirmatively submit their Hart-Scott-Rodino (HSR) filings to their states’ attorneys general. Both states passed laws modeled on the...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

Akin Gump Strauss Hauer & Feld LLP

The First 100 Days of the New HSR Rules: Assessing the Impact

The new Hart-Scott-Rodino (HSR) requirements went into effect on February 10, 2025, meaning that May 21, 2025 marked their 100th day in effect. Here are just a few of our observations from the first 100 days of the new HSR...more

Vinson & Elkins LLP

First 100 Days of the New HSR Rules

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One hundred days ago, sweeping revisions to the Hart-Scott-Rodino Act Premerger Notification Form took effect. The revisions have significantly increased the time and effort to prepare HSR filings and have led filing parties...more

King & Spalding

UAE Implements Sweeping Competition Law Reforms with Mandatory Pre-Merger Notifications

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The United Arab Emirates (UAE) has implemented a significant reform of its competition law framework through Federal Decree-Law No. 36 of 2023, with key implementing provisions brought into effect by Cabinet Ministerial...more

Akerman LLP

Preparing for an HSR Filing in the Ordinary Course of Business

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Earlier this year, the Federal Trade Commission (FTC), with concurrence from the Antitrust Division of the Department of Justice (DOJ), issued a Final Rule implementing substantial changes to the pre-merger notification...more

Cadwalader, Wickersham & Taft LLP

Washington State Adopts First Broad State Antitrust Premerger Notification Act and Filing Requirement

Effective 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...more

McDermott Will & Emery

Washington State Enacts Merger Review Regime

McDermott Will & Emery on

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

White & Case LLP

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

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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

Stinson LLP

Washington State First to Adopt "Baby HSR" Act

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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

Proskauer Rose LLP

Proskauer Hedge Fund Trading Guide Chapter 4: Stock Acquisitions: Key Requirements and Timing Considerations of Hart-Scott-Rodino

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Proskauer’s Practical Guide to the Regulation of Hedge Fund Trading Activities offers a concise, easy-to-read overview of the trading issues and questions we commonly encounter when advising hedge funds and their managers. It...more

Herbert Smith Freehills Kramer

Strategies for Preparing the New Hart-Scott-Rodino Forms

On Feb. 10, 2025, the new premerger notification and report forms under the Hart-Scott-Rodino (HSR) Act became effective. The new HSR forms make significant changes to the reporting obligations of both acquiring and acquired...more

Epstein Becker & Green

Revised HSR Thresholds Now in Effect

Each year, the minimum jurisdictional thresholds associated with the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (HSR) are adjusted by the Federal Trade Commission (FTC). The 2025 adjustments went into effect on...more

Amundsen Davis LLC

New Merger Review Process: How to Prepare for Your Next Filing

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The Hart-Scott-Rodino (HSR) Act is a federal law that requires parties to a future business sale transaction to disclose certain information to determine that the transaction does not violate antitrust laws and harm...more

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