Key facts
- ADAGE CAPITAL PARTNERS GP, L.L.C. filed SCHEDULE 13G/A for Mereo BioPharma Group plc Ordinary Shares, nominal value 0.003 GBP per share (MREO).
- Disclosed ownership: 5.6%.
- Date of event: 31 Dec 2024.
ADAGE CAPITAL PARTNERS GP, L.L.C. - 31 Dec 2024 SCHEDULE 13G/A Report for Mereo BioPharma Group plc Ordinary Shares, nominal value 0.003 GBP per share (MREO)
- Filing Manager
- ADAGE CAPITAL PARTNERS GP, L.L.C.
- Reporting Manager
- Adage Capital Management, L.P.
- Symbol
- MREO
- Shares outstanding
- 775,357,028 shares
- Disclosed Ownership
- 43,575,065 shares
- Ownership
- 5.6%
- Form type
- SCHEDULE 13G/A
- Filing time
- 12 Feb 2025, 09:34:55 UTC
- Date of event
- 31 Dec 2024
- SEC
- View on sec.gov
Key filing fact
ADAGE CAPITAL PARTNERS GP, L.L.C. disclosed 5.6% ownership in Mereo BioPharma Group plc Ordinary Shares, nominal value 0.003 GBP per share (MREO) on 31 Dec 2024.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 12 Feb 2025, 09:34.
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 (4)
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 |
|---|---|---|---|---|---|---|---|
| Adage Capital Management, L.P. | 5.6% | 43,575,065 | 0 | 43,575,065 | /s/ Robert Atchinson | By: Adage Capital Partners LLC, its General Partner, By: Robert Atchinson, its Managing Member | |
| Adage Capital Partners GP, L.L.C. | 0% | 0 | 0 | 0 | /s/ Robert Atchinson | By: Adage Capital Advisors, L.L.C., its Managing Member, By: Robert Atchinson, its Managing Member | |
| Robert Atchinson | 5.6% | 43,575,065 | 0 | 43,575,065 | /s/ Robert Atchinson | Robert Atchinson, individually | |
| Phillip Gross | 5.6% | 43,575,065 | 0 | 43,575,065 | /s/ Phillip Gross | Phillip Gross, individually |
CIK / CUSIP context first