Mereo BioPharma Group plc
Total Trades
9
Buys
0
Sells
7
Largest Trade
$100K–$500K
Insiders
6
Institutional Funds
53
Inst. Value
$1M+
Activist Filings
50
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| PAKIANATHAN DEEPIKA | Director | EXERCISE | $100K–$500K | 105K | $1.44 | Aug 23, 2024 |
| PAKIANATHAN DEEPIKA | Director | SELL | $100K–$500K | 105K | $4.43 | Aug 23, 2024 |
| Sermon Charles | General Counsel | SELL | $100K–$500K | 46K | $3.49 | Jun 27, 2024 |
| Lewicki John A. | Chief Scientific O… | SELL | $50K–$100K | 24K | $3.49 | Jun 27, 2024 |
| Fox Christine Ann | CFO | SELL | $100K–$500K | 42K | $3.49 | Jun 27, 2024 |
| Scots-Knight Denise | CEO | SELL | $100K–$500K | 133K | $3.49 | Jun 27, 2024 |
| Hughes-Wilson Alexandra | See Remarks | SELL | $100K–$500K | 33K | $3.49 | Jun 27, 2024 |
| Hughes-Wilson Alexandra | See Remarks | EXERCISE | $100K–$500K | 168K | $1.23 | May 24, 2024 |
| Hughes-Wilson Alexandra | See Remarks | SELL | $100K–$500K | 100K | $2.97 | May 24, 2024 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 53 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Rubric Capital Management LP | 15.3M | $1M+ | SH |
| Schonfeld Strategic Advisors LLC | 6.1M | $1M+ | SH |
| Tejara Capital Ltd | 2.2M | $500K+ | SH |
| Logos Global Management LP | 1.9M | $500K+ | SH |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 1.8M | $500K+ | SH |
| Monaco Asset Management SAM | 1.6M | $500K+ | SH |
| BALYASNY ASSET MANAGEMENT L.P. | 1.3M | $500K+ | SH |
| DLD Asset Management, LP | 746K | $100K–$500K | SH (Call) |
| GROUP ONE TRADING LLC | 442K | $100K–$500K | SH |
| SIMPLEX TRADING, LLC | 419K | $100K–$500K | SH |
| EntryPoint Capital, LLC | 401K | $100K–$500K | SH |
| LUMINUS MANAGEMENT LLC | 395K | $100K–$500K | SH |
| Knott David M Jr | 300K | $100K–$500K | SH |
| SPHERA FUNDS MANAGEMENT LTD. | 255K | $100K–$500K | SH |
| CITIGROUP INC | 196K | $50K–$100K | SH |
| RENAISSANCE TECHNOLOGIES LLC | 194K | $50K–$100K | SH |
| ADAR1 Capital Management, LLC | 150K | $50K–$100K | SH |
| ADAR1 Capital Management, LLC | 150K | $50K–$100K | SH |
| STATE STREET CORP | 131K | $50K–$100K | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 93K | $15K–$50K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 17, 2026
0.0%
0 shares
SC 13G/A · Feb 17, 2026
0.0%
0 shares
Frazier Life Sciences Public Fund, L.P.
SC 13G/A · Feb 13, 2026
0.0%
0 shares
SC 13G · Jan 9, 2026
9.4%
74.5M shares
SC 13G · Jan 6, 2026
8.2%
65.1M shares
SC 13G/A · Nov 14, 2025
10.2%
16.3M shares
SC 13G/A · Nov 14, 2025
4.9%
39.0M shares
Frazier Life Sciences Public Fund, L.P.
SC 13G/A · Aug 14, 2025
4.1%
32.4M shares
SC 13G/A · Aug 14, 2025
11.1%
17.7M shares
SC 13G · Jun 11, 2025
4.4%
35.2M shares
Rock Springs Capital Management LP
SC 13G/A · May 15, 2025
4.2%
33.4M shares
SC 13G/A · May 14, 2025
14.3%
22.7M shares
SC 13G/A · May 14, 2025
14.3%
22.7M shares
Adage Capital Management, L.P.
SC 13G/A · May 12, 2025
1.1%
8.5M shares
Frazier Life Sciences Public Fund, L.P.
SC 13G · Apr 4, 2025
3.5%
27.6M shares
SC 13G/A · Feb 14, 2025
11.0%
17.1M shares
Adage Capital Management, L.P.
SC 13G/A · Feb 12, 2025
5.6%
43.6M shares
SC 13G/A · Dec 6, 2024
10.3%
15.9M shares
Suvretta Capital Management, LLC
SC 13G/A · Nov 14, 2024
0.0%
0 shares
Soleus Private Equity Fund III, L.P.
SC 13G/A · Nov 14, 2024
0.2%
1.2M shares
Janus Henderson Group plc EIN #00-0000000
SC 13G/A · Nov 14, 2024
8.0%
12.3M shares
Rock Springs Capital Management LP
SC 13G/A · Nov 12, 2024
6.2%
47.7M shares
Janus Henderson Group plc EIN #00-0000000
SC 13G · Jul 11, 2024
5.2%
7.9M shares
SC 13D/A · Jun 17, 2024
14.2%
108.5M shares
SC 13D/A · Apr 16, 2024
14.2%
99.7M shares
SC 13G/A · Feb 14, 2024
0.0%
0 shares
Rock Springs Capital Management LP
SC 13G/A · Feb 14, 2024
5.7%
39.9M shares
Rock Springs Capital Management LP
SC 13G/A · Feb 14, 2024
6.4%
39.9M shares
SC 13G · Feb 14, 2024
6.2%
43.8M shares
Suvretta Capital Management, LLC
SC 13G/A · Feb 13, 2024
5.3%
36.9M shares
SC 13D/A · Nov 20, 2023
14.2%
99.7M shares
SC 13D/A · Nov 15, 2023
13.9%
97.3M shares
SC 13D/A · Nov 13, 2023
13.9%
97.3M shares
SC 13D/A · Nov 8, 2023
13.6%
95.6M shares
SC 13D/A · Nov 6, 2023
13.3%
93.4M shares
SC 13D/A · Nov 2, 2023
13.3%
92.3M shares
SC 13D/A · Oct 30, 2023
13.2%
92.2M shares
SC 13G/A · Aug 10, 2023
2.2%
14.6M shares
Soleus Private Equity Fund III, L.P.
SC 13G · Jul 26, 2023
2.8%
18.1M shares
SC 13D/A · Jun 16, 2023
14.4%
90.0M shares
SC 13G/A · Feb 14, 2023
4.7%
8.3M shares
SC 13G/A · Feb 14, 2023
10.0%
69.4M shares
Rock Springs Capital Management LP
SC 13G/A · Feb 14, 2023
5.3%
31.2M shares
SC 13G/A · Feb 13, 2023
0.7%
839K shares
Suvretta Capital Management, LLC
SC 13G/A · Feb 13, 2023
5.9%
36.8M shares
SC 13D/A · Oct 28, 2022
13.4%
83.8M shares
SC 13D/A · Sep 23, 2022
13.4%
83.8M shares
SC 13D/A · Aug 23, 2022
14.3%
83.8M shares
SC 13D/A · Jun 14, 2022
14.1%
82.3M shares
SC 13D/A · Jun 9, 2022
13.1%
76.8M shares