Security key
589492107
Mereo BioPharma Group plc - Ordinary Shares (MREO)
CUSIP: 589492107
Q3 2020 13F Holders as of 30 Sep 2020
- Security type / class
- Equity / Ordinary Shares
- Total 13F shares
- 14,275,529
- Total 13F value
- $38,070,000
- Share change
- +7,000,458
- SEC-reported price per share
- $2.62
- Number of holders
- 22
- Value change
- +$18,635,267
- Number of buys
- 14
- Number of sells
- 9
- Shares outstanding
- 833,333,333
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2020
Institutions
22
Top holders
10
MREO full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2026
Mereo BioPharma Group plc SEC filings
Mereo BioPharma Group plc company facts
Broader feeds
Reporting periods
Holder history for CUSIP 589492107
Recent filing periods:
Ownership snapshot
Top reported holders of MREO - Mereo BioPharma Group plc - Ordinary Shares (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Boxer Capital, LLC
Disclosed value leader
Boxer Capital, LLC
Comparable rows
0/15
Latest evidence
30 Jun 2020
13F
Highest disclosed value: $12,331,000
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
Boxer Capital, LLC has the largest disclosed position value at $12.33M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Boxer Capital, LLC's linked filing trail.
Disclosed position value
Top 5
Boxer Capital, LLC
$12.33M
Vivo Capital, LLC
$2.38M
PRIMECAP MANAGEMENT CO/CA/
$1.5M
Verition Fund Management LLC
$1.21M
Point72 Asset Management, L.P.
$1.15M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Boxer Capital, LLC |
13F
Company
|
—
denominator unverified
|
$12,331,000
4,029,649 shares
|
— | 30 Jun 2020 |
| Vivo Capital, LLC |
13F
Company
|
—
denominator unverified
|
$2,381,000
778,000 shares
|
— | 30 Jun 2020 |
| PRIMECAP MANAGEMENT CO/CA/ |
13F
Company
|
—
denominator unverified
|
$1,497,000
489,100 shares
|
— | 30 Jun 2020 |
| Verition Fund Management LLC |
13F
Company
|
—
denominator unverified
|
$1,210,000
395,290 shares
|
— | 30 Jun 2020 |
| Point72 Asset Management, L.P. |
13F
Company
|
—
denominator unverified
|
$1,148,000
375,000 shares
|
— | 30 Jun 2020 |
| Marshall Wace North America L.P. |
13F
Company
|
—
denominator unverified
|
$818,000
267,180 shares
|
— | 30 Jun 2020 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2020
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
22
Shares
14,275,529
Rows available
22
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2020 vs Q2 2020 Across Filers
Q2 2020 holders
20
Q3 2020 holders
22
Holder diff
2
| Investor | Q2 2020 Shares | Q3 2020 Shares | Share Diff | Share Chg % | Q2 2020 value | Q3 2020 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend