Monitor FTC second request compliance timeline and any subsequent clearance or litigation. The first half of 2027 closing expectation provides a multi-quarter horizon; any FTC challenge or consent decree negotiation would be the next material catalyst.
Price Chart
Executive Summary
Lantheus disclosed that it and acquirer Curium US Holdings each received a Second Request from the FTC on October 21, 2026, in connection with the pending merger. This extends the HSR Act waiting period until 30 days after substantial compliance, pushing the expected closing to the first half of 2027. The Second Request signals heightened antitrust scrutiny but is a standard procedural step in large transactions, not a rejection.
Key Facts
- Lantheus and Curium US Holdings each received a Second Request from the FTC on October 21, 2026.
- The Second Request extends the HSR waiting period until 30 days after both parties substantially comply, unless terminated earlier by the FTC.
- Parties expect to respond promptly and continue cooperating with the FTC.
- Merger completion remains subject to HSR waiting period expiration or termination and other closing conditions.
- Parties continue to expect to consummate the merger in the first half of 2027.
Financial Impact
No financial figures disclosed in the filing. The Second Request delays but does not block the merger; deal value not stated in this filing.
Risk Factors
- FTC could challenge the merger or impose conditions, potentially delaying or blocking the deal.
- Extended HSR review increases uncertainty and may divert management attention.
- If the merger fails, Lantheus stock could re-rate lower without the acquisition premium.
Investment Themes
Documents Analyzed
This report is based on 4 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 8-K Filing (Primary) | 0001193125-26-428324 |
| Document: 0001193125-26-428324-index-headers.html | 0001193125-26-428324 |
| Document: 0001193125-26-428324-index.html | 0001193125-26-428324 |
| Document: 0001193125-26-428324.txt | 0001193125-26-428324 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 22, 2026 5d ago | 8-K | $100.10 $99.80 | ▼ −0.30% | ▲ +0.22% | $100.10 (−0.00%) |
Oct 2, 2026 24d ago | DEFA14A | $100.19 $99.95 | ▼ −0.24% | ▼ −0.79% | $100.10 (−0.09%) |
Oct 2, 2026 24d ago | 8-K | $100.19 $99.95 | ▼ −0.24% | ▼ −0.79% | $100.10 (−0.09%) |
Sep 16, 2026 5w ago | DEFA14A | $100.80 $100.55 | ▼ −0.25% | ▼ −0.38% | $100.10 (−0.69%) |
Aug 26, 2026 8w ago | PREM14A | $100.82 $100.47 | ▼ −0.35% | ▼ −1.00% | $100.10 (−0.71%) |
Aug 14, 2026 10w ago | Press Release | $100.95 $100.91 | ▼ −0.04% | ▲ +0.43% | $100.10 (−0.84%) |
Aug 6, 2026 11w ago | 8-K | $101.07 $100.95 | ▼ −0.12% | ▼ −0.73% | $100.10 (−0.96%) |
Aug 3, 2026 12w ago | 8-K / DEFA14A | $101.11 $101.50 | ▲ +0.39% | ▲ +0.59% | $100.10 (−1.00%) |
Aug 3, 2026 12w ago | DEFA14A / 8-K | $101.19 $101.11 | ▼ −0.08% | ▼ −1.88% | $100.10 (−1.08%) |
Aug 3, 2026 12w ago | Press Release | $101.19 $101.11 | ▼ −0.08% | ▼ −1.88% | $100.10 (−1.08%) |
US Market Status
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