Lantheus Withdraws and Refiles HSR Filing for $8B Curium Acquisition

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Summary · why it matters

Lantheus Holdings said it has withdrawn and refiled its Hart-Scott-Rodino Act pre-merger notification regarding its $8B acquisition of Curium. The withdrawal, done on Sept. 17, was made to provide the Federal Trade Commission with additional time to review the merger, according to an SEC filing. The resubmission was filed on Monday, meaning the standard HSR 30-day waiting period will end on Oct. 21 at 11:59 p.m. Lantheus said a refiling is routine procedure for antitrust review and still expects the merger to close in H1 2027.

Impact on assets 1

Biotech & Genomic Medicine▲ · 1 stocks
Lantheus Holdings Inc
LNTH
± MixedRegulationrelevance

Lantheus withdrew and refiled its HSR pre-merger notification for the $8B Curium acquisition to give the FTC more review time, a routine antitrust step that delays but does not block the deal.

Off-coverage companies 1

CuriumPrivate± Mixed
Regulationrelevance

Curium is the target of Lantheus's $8B acquisition, whose HSR filing was withdrawn and refiled for extended FTC antitrust review, still expected to close in H1 2027.

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