Key facts
- MASSACHUSETTS MUTUAL LIFE INSURANCE CO filed SCHEDULE 13D for JANUS HENDERSON GROUP PLC Ordinary Shares, $1.50 per share par value (JHG).
- Disclosed ownership: 0.1%.
- Date of event: 21 Dec 2025.
MASSACHUSETTS MUTUAL LIFE INSURANCE CO - 21 Dec 2025 SCHEDULE 13D Report for JANUS HENDERSON GROUP PLC Ordinary Shares, $1.50 per share par value (JHG)
- Filing manager
- MASSACHUSETTS MUTUAL LIFE INSURANCE CO
- Reporting owner
- MASSACHUSETTS MUTUAL LIFE INSURANCE CO
- Symbol
- JHG
- Disclosed shares
- 9,283 shares
- Ownership percentage
- 0.1%
- Form type
- SCHEDULE 13D
- Filing time
- 23 Dec 2025, 18:06:45 UTC
- Event date
- 21 Dec 2025
- SEC filing
- View on sec.gov
Reporting parties
Subject security
Ownership signal
SEC evidence
Key filing fact
MASSACHUSETTS MUTUAL LIFE INSURANCE CO disclosed 0.1% ownership in JANUS HENDERSON GROUP PLC Ordinary Shares, $1.50 per share par value (JHG) on 21 Dec 2025.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 23 Dec 2025, 18:06.
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 |
|---|---|---|---|---|---|---|---|
| MASSACHUSETTS MUTUAL LIFE INSURANCE CO | 0.1% | 9,283 | 9,283 | 0 | /s/ Jaime Genua | Jaime Genua, Assistant Secretary | 0000225602 |
CIK / CUSIP context first