Fifth Circuit grants temporary stay preserving 2024 HSR rules

On February 19, 2026, the US Court of Appeals for the Fifth Circuit granted the Federal Trade Commission’s (FTC) motion to temporarily stay the US District Court for the Eastern District of Texas’s order vacating the 2024 Hart-Scott-Rodino (HSR) Premerger Notification Rules “until further order” while the parties brief the FTC’s motion to stay the district court’s order pending appeal. In the order granting the temporary stay, the Fifth Circuit set an accelerated briefing schedule as to whether the stay will apply for the pendency of the appeal on the merits. The FTC filed its brief on February 18, 2026; business association plaintiffs/appellees’ response to the motion for stay pending appeal is due February 23; and the FTC’s reply is due February 26. The temporary stay keeps the 2024 rules and HSR form in effect as of now.

We will continue to provide updates as this matter progresses.

Royce Brosseau
Royce E. Brosseau focuses his practice on antitrust, regulatory, and litigation matters. Read Royce Brosseau's full bio. 


Jon B. Dubrow
Jon Dubrow is the US head of McDermott’s Antitrust Group and a strategic advisor to clients across a host of interrelated antitrust issues, including mergers and acquisitions (M&A) transactions and merger clearance, counseling, and litigation. He leads the defense of mergers, acquisitions and joint ventures before the Department of Justice, the Federal Trade Commission and other international competition authorities. Jon also regularly assists third parties whose interests are adversely affected by proposed transactions. Jon also is experienced in antitrust litigation. He provides counseling on distribution issues, contracting arrangements and a wide variety of other competition-related matters. Read Jon Dubrow's full bio.


Noah Feldman Greene
Noah Feldman Greene focuses his practice on antitrust matters. He assists clients on mergers and acquisitions, including defending transactions before the Federal Trade Commission, Department of Justice, state antitrust authorities and foreign competition authorities. He also assists clients with premerger analysis and notifications under the Hart-Scott-Rodino Act. Additionally, Noah advises on antitrust compliance matters, antitrust litigation and government investigations. Read Noah Feldman Greene's full bio.


Gregory E. Heltzer
Gregory (Greg) E. Heltzer focuses his practice on defending mergers and acquisitions before the US Federal Trade Commission, US Department of Justice, state antitrust authorities and foreign competition authorities. Greg has extensive experience in evaluating whether potential transactions will be cleared by antitrust enforcers and developing a viable path for clearance. In addition, he handles complex antitrust litigation, government investigations and antitrust counseling. Read Greg Heltzer's full bio.


Elai Katz
Elai Katz is a strategic antitrust lawyer with over two decades of experience handling mergers and acquisitions, litigation, counseling and government investigations. He represents buyers and sellers across a range of industries, including financial services, insurance, healthcare, life sciences, online retail, beverage, airline, and media and telecommunications. Read Elai Katz's full bio. 


Ryan Tisch
Ryan Tisch provides strategic antitrust counsel for boards of directors, chief executive officers and key business stakeholders as they maneuver government regulations around the world. He is known for securing approvals for significant mergers facing review in multiple jurisdictions, including some of the largest mergers in the communications, manufacturing, technology, and food and beverage industries. As the digital economy exposes traditional businesses to new competition, clients also turn to Ryan to advise on their evolving business platforms and go-to-market strategies. Read Ryan Tisch's full bio. 

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