Institutional Ownership
Mereo Biopharma Group PLC
CUSIP 589492107SPON ADSMREOQ1 2026
13D / 13G Filings
77
Schedule 13D/13G on record
Beneficial Filers
20
Distinct reporting persons
Largest Stake
14.4%
Max % of class reported
Institutional Holders
63
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
77 filings · latest Feb 17, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 17, 2026 | Northpond Ventures, LP | 13G/A | — | — | SEC |
| 2 | Feb 17, 2026 | Janus Henderson Group PLC | 13G/A | — | — | SEC |
| 3 | Feb 13, 2026 | Frazier Life Sciences Public Fund, L.P. | 13G/A | — | — | SEC |
| 4 | Jan 9, 2026 | Ecor1 Capital, LLC | 13G | 9.4% | — | SEC |
| 5 | Jan 6, 2026 | 683 Capital Management, LLC | 13G | 8.2% | 65.08M | SEC |
| 6 | Nov 14, 2025 | Janus Henderson Group PLC | 13G/A | 10.2% | 16.29M | SEC |
| 7 | Nov 14, 2025 | Mangrove Partners Im, LLC | 13G/A | 4.9% | 389.53T | SEC |
| 8 | Aug 14, 2025 | Frazier Life Sciences Public Fund, L.P. | 13G/A | 4.1% | 32.43M | SEC |
| 9 | Aug 14, 2025 | Janus Henderson Group PLC | 13G/A | 11.1% | 17.69M | SEC |
| 10 | Jun 11, 2025 | Northpond Ventures, LP | 13G | 6.9% | 54.52M | SEC |
67 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Mereo Biopharma Group PLC.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Rubric Capital Management LP | 15.31M | $5.05M |
| 2 | Ecor1 Capital, LLC | 13.37M | $4.41M |
| 3 | 683 Capital Management, LLC | 12.00M | $3.96M |
| 4 | Bank Of America Corp /De/ | 8.20M | $2.70M |
| 5 | Defilade Capital Management, L.P. | 7.56M | $2.49M |
| 6 | Newtyn Management, LLC | 7.08M | $2.34M |
| 7 | Millennium Management LLC | 3.56M | $1.17M |
| 8 | Tejara Capital Ltd | 2.04M | $672.4K |
| 9 | Ubs Group AG | 1.49M | $491.7K |
| 10 | Wealthspire Advisors, LLC | 796.0K | $262.7K |