Mereo BioPharma Group plc

MREONASDAQ

$0.38+0.01 (+3.54%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

Mereo BioPharma Group plc price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-81.5%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Rubric Capital Management LP	1.92%	$4.86M	0.04%	Not reported
683 Capital Management, LLC	1.48%	$3.74M	0.18%	Reduce 1.85%
Bank of America Corp	1.03%	$2.6M	0.00%	Not reported
Defilade Capital Management, L.P.	0.95%	$2.4M	0.32%	Not reported
Newtyn Management, LLC	0.38%	$953K	0.12%	Reduce 57.62%
Tejara Capital Ltd	0.26%	$647K	0.27%	Not reported
UBS Group AG	0.18%	$460K	0.00%	Not reported
Two Sigma Investments, LP	0.17%	$419K	0.00%	Not reported
EcoR1 Capital, LLC	0.13%	$318K	0.02%	Reduce 92.52%
Jane Street Group, LLC	0.10%	$246K	0.00%	Not reported
Ishara Investments LP	0.10%	$244K	0.18%	New Not reported
Wealthspire Advisors, LLC	0.10%	$243K	0.00%	Not reported
Citadel Advisors LLC	0.06%	$141K	0.00%	Not reported
Rangeley Capital, LLC	0.04%	$105K	0.10%	Not reported
Susquehanna International Group, LLP	0.03%	$67.8K	0.00%	Not reported
Marshall Wace, LLP	0.02%	$57.6K	0.00%	Not reported
XTX Topco Ltd	0.02%	$55.4K	0.00%	Not reported
State Street Corp	0.02%	$42.8K	0.00%	Not reported
Nomura Holdings Inc	0.01%	$33.2K	0.00%	Not reported
James J. Burns & Company, LLC	0.01%	$30.3K	0.00%	New Not reported
Quarry LP	0.01%	$29.8K	0.00%	New Not reported
Goldman Sachs Group Inc	0.01%	$27.1K	0.00%	Not reported
JMN Financial LLC	0.01%	$24.4K	0.02%	New Not reported
BlackRock, Inc.	0.01%	$22.1K	0.00%	Not reported
Virtu Financial LLC	0.01%	$19K	0.00%	Not reported
JPMorgan Chase & Co	0.01%	$19.4K	0.00%	Not reported
Renaissance Technologies LLC	0.01%	$16.6K	0.00%	Not reported
Significant Wealth Partners LLC	0.00%	$10.4K	0.01%	Add 27.48%
Clear Harbor Asset Management, LLC	0.00%	$10.1K	0.00%	Reduce 8.57%
Rhumbline Advisers	0.00%	$8.51K	0.00%	Not reported
Centiva Capital, LP	0.00%	$7.94K	0.00%	Not reported
Engineers Gate Manager LP	0.00%	$7.61K	0.00%	Not reported
Simplex Trading, LLC	0.00%	$5.97K	0.00%	Not reported
NFSG Corp	0.00%	$5.96K	0.00%	Not reported
OneDigital Investment Advisors LLC	0.00%	$5.81K	0.00%	Not reported
Morgan Stanley	0.00%	$5.32K	0.00%	Not reported
IHT Wealth Management, LLC	0.00%	$4.77K	0.00%	Not reported
Two Sigma Securities, LLC	0.00%	$4.1K	0.00%	Not reported
J. Safra Sarasin Holding AG	0.00%	$4.08K	0.00%	Not reported
SG Americas Securities, LLC	0.00%	$4K	0.00%	Not reported
MML Investors Services, LLC	0.00%	$3.88K	0.00%	Not reported
World Investment Advisors	0.00%	$3.3K	0.00%	Not reported
Astoria Portfolio Advisors LLC.	0.00%	$3.18K	0.00%	Not reported
GAMMA Investing LLC	0.00%	$2.96K	0.00%	Not reported
Rockefeller Capital Management L.P.	0.00%	$635	0.00%	Not reported
Allworth Financial LP	0.00%	$477	0.00%	Not reported
Osaic Holdings, Inc.	0.00%	$479	0.00%	Not reported
Markowski Investments	0.00%	$477	0.00%	Not reported
Sit Investment Associates Inc	0.00%	$0	0.00%	Not reported
New England Capital Financial Advisors LLC	0.00%	$96	0.00%	Not reported

50 of 59 holders

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