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New Legislation › Filing Requirements › Colorado

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

Snell & Wilmer

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

Snell & Wilmer on

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

Hogan Lovells

State premerger notification requirements take effect this summer

Hogan Lovells on

Washington and Colorado recently passed laws that require parties that file premerger filings pursuant to the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (HSR Act) and meet certain state-specific thresholds to...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

Brownstein Hyatt Farber Schreck

Colorado Makes Consequential Changes to the Ballot Measure Process

Brownstein Hyatt Farber Schreck on

This past legislative session, Colorado legislators passed a bill making changes to the state’s citizen ballot initiative process. House Bill 25-1327 (Modify Statewide Ballot Measure Process), sponsored by Reps. Emily...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

K&L Gates LLP

Colorado Enacts Uniform Antitrust Pre-Merger Notification Law

K&L Gates LLP on

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

Clark Hill PLC

Colorado’s new registered agent requirements takes effect July 1, 2025: What your business needs to know

Clark Hill PLC on

If your business operates in Colorado, significant changes to the State’s registered agent requirements are now in effect that could impact your company’s compliance status. Colorado House Bill 24-1137, which became law in...more

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