# Hart-Scott-Rodino (HSR) Act

Type: regulation

Source: Legal & RegTech Intelligence Brief — https://getlegalbrief.com/entity/hart-scott-rodino-hsr-act
Canonical HTML page: https://getlegalbrief.com/entity/hart-scott-rodino-hsr-act

## Timeline

- **2026-03-20**: FTC Guidance Issued — The FTC announces it will accept old forms but allow voluntary submission of new forms.
- **2026-03-19**: Fifth Circuit Denies Stay — The appellate court refuses to pause the vacatur, reinstating the pre-2025 filing forms immediately.
- **2026-03-10**: District Court Vacatur — A lower court rules the 2025 HSR requirements are invalid and vacates the rule.
- **2025-02-10**: New HSR Rules Effective — The FTC's expanded premerger notification requirements go into effect, increasing disclosure burdens.

## Recent coverage (1 stories)

### Fifth Circuit Reinstates Pre-2025 HSR Rules, Handing Blow to FTC Antitrust Agenda
2026-03-20 23:48:36 · Sentiment: Neutral · Impact: 7/10 · Sources: 2

The U.S. Court of Appeals for the Fifth Circuit has denied the FTC's request to stay a lower court ruling, effectively vacating the 2025 HSR filing requirements. This decision reinstates the less burdensome pre-February 2025 framework, providing immediate relief to dealmakers while the agency's broader appeal proceeds.
Full story: https://getlegalbrief.com/story/fifth-circuit-reinstates-pre-2025-hsr-rules-ftc-setback

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