Key facts
- JANUS HENDERSON GROUP PLC filed SCHEDULE 13G/A for LANTHEUS HOLDINGS, INC. Common Stock (LNTH).
- Disclosed ownership: 7.4%.
- Date of event: 31 Mar 2026.
JANUS HENDERSON GROUP PLC - 31 Mar 2026 SCHEDULE 13G/A Report for LANTHEUS HOLDINGS, INC. Common Stock (LNTH)
- Filing Manager
- JANUS HENDERSON GROUP PLC
- Reporting Manager
- JANUS HENDERSON GROUP PLC
- Security
- LANTHEUS HOLDINGS, INC. Common Stock
- Symbol
- LNTH
- Shares outstanding
- 64,524,878 shares
- Disclosed Ownership
- 4,774,841 shares
- Ownership
- 7.4%
- Form type
- SCHEDULE 13G/A
- Filing time
- 15 May 2026, 12:38:41 UTC
- Date of event
- 31 Mar 2026
- Previous filing
- 17 Feb 2026
- SEC
- View on sec.gov
Key filing fact
JANUS HENDERSON GROUP PLC disclosed 7.4% ownership in LANTHEUS HOLDINGS, INC. Common Stock (LNTH) on 31 Mar 2026.
Change
- Previous schedule filing date: 17 Feb 2026.
- Current filing was accepted on 15 May 2026, 12:38.
Research use
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Reporting managers (1)
Names, ownership, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| JANUS HENDERSON GROUP PLC | 7.4% | 4,774,841 | 0 | 4,774,841 | Kristin Mariani | Head of North America Compliance |
CIK / CUSIP context first