Mereo BioPharma Group plc

NasdaqCM:MREO Stock Report

Market Cap: US$51.4m

Mereo BioPharma Group Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of MREO?
Owner TypeNumber of SharesOwnership Percentage
Individual Insiders1,782,6671.12%
Institutions26,439,47116.6%
Hedge Funds40,676,20225.5%
General Public90,720,26856.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 42.68% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
9.59%
Rubric Capital Management LP
15,307,347US$4.9m0%0.05%
8.38%
EcoR1 Capital, LLC
13,368,855US$4.3m70.2%0.14%
7.52%
683 Capital Management, LLC
12,000,000US$3.9m-20.1%0.32%
4.74%
Defilade Capital Management, L.P.
7,558,756US$2.4m0%0.32%
4.43%
Newtyn Management, LLC
7,079,056US$2.3m3,050%0.18%
2.23%
Millennium Management LLC
3,559,103US$1.1m4,150%no data
1.28%
Tejara Capital Limited
2,037,520US$656.3k-5.66%0.18%
0.93%
UBS Asset Management AG
1,490,128US$480.0k-55.2%no data
0.51%
Denise Scots-Knight
808,921US$260.6k0%no data
0.51%
Charles Sermon
808,921US$260.6k0%no data
0.5%
Wealthspire Advisors LLC
796,036US$256.4k0%no data
0.43%
Marshall Wace LLP
686,987US$221.3k0%no data
0.21%
Group One Trading LLC
335,827US$108.2k-24%no data
0.21%
Rangeley Capital, LLC
329,200US$106.0k-9.56%0.09%
0.19%
BlackRock, Inc.
302,991US$97.6k-3.08%no data
0.19%
Knott Partners Management, LLC
300,337US$96.7k0%0.05%
0.13%
Acadian Asset Management LLC
209,084US$67.3k240%no data
0.12%
Susquehanna International Group, LLP
195,920US$63.1k0%no data
0.12%
Two Sigma Investments, LP
187,839US$60.5k-64.2%no data
0.094%
ADAR1 Capital Management, LLC
150,000US$48.3k0%no data
0.088%
Jane Street Group, LLC
139,973US$45.1k-60.7%no data
0.084%
State Street Investment Management
133,379US$43.0k2.09%no data
0.08%
Forefront Analytics, LLC
127,778US$41.2k302%0.03%
0.079%
Virtus Investment Advisers, LLC
125,662US$40.5k2.5%no data
0.058%
Geode Capital Management, LLC
92,534US$29.8k0%no data

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/08/05 11:12
End of Day Share Price 2026/08/05 00:00
Earnings2026/03/31
Annual Earnings2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Mereo BioPharma Group plc is covered by 11 analysts. 6 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Jack AllenBaird
Yun ZhongBTIG
Julian HarrisonBTIG