NASDAQ · MREO

Mereo BioPharma Group PLC

Closing price · Nov 13, 2026 $0.3075

Latest quarter · ended Sep 30, 2026

Sales slipped and cash got weaker

descriptionFiled Nov 9, 2026
Revenue growthShrinking
−100.0%
Quarter ended Dec 31, 2024: −100.0% sales vs. a year beforeQuarter ended Jun 30, 2026: −100.0% sales vs. a year before
Dec '24Jun '26
$800K vs. $0 a year ago
Cash from operationsBetter
−$4.05M
Quarter ended Dec 31, 2024: −$9.42M cash from operationsQuarter ended Mar 31, 2025: −$8.33M cash from operationsQuarter ended Jun 30, 2025: −$7.65M cash from operationsQuarter ended Sep 30, 2025: −$7.31M cash from operationsQuarter ended Dec 31, 2025: −$7.68M cash from operationsQuarter ended Mar 31, 2026: −$4.31M cash from operationsQuarter ended Jun 30, 2026: −$6.04M cash from operationsQuarter ended Sep 30, 2026: −$4.05M cash from operations
Dec '24Sep '26
vs. −$7.31M a year ago
Share countSteady
+0.4%
Quarter ended Dec 31, 2024: 795M sharesQuarter ended Mar 31, 2025: 795M sharesQuarter ended Jun 30, 2025: 795.48M sharesQuarter ended Sep 30, 2025: 795.66M sharesQuarter ended Dec 31, 2025: 798.08M sharesQuarter ended Mar 31, 2026: 798.09M sharesQuarter ended Jun 30, 2026: 798.45M sharesQuarter ended Sep 30, 2026: 798.5M shares
Dec '24Sep '26
798.5M shares vs. 795.66M a year ago

Numbers come from the company's own 10-Q and 10-K reports filed with the SEC. Each bar is one quarter, oldest on the left. The colored bar is the latest. Hover over or tap a bar to see its number.

Smart money pulse

What insiders and funds are doing

Selling Insiders: as of Nov 13 Funds: as of Jun 30, 2026
−1000+100 −50
  • account_balance
    0 funds bought, 2 sold in the quarter ended Jun 30, 2026, counting funds that hold 500 stocks or fewer and $1M+ of this one. Index funds and banks are left out.
  • info
    No real insider sales in 12 months. Planned 10b5-1 sales and tax withholding are left out.

−100 means everyone selling, +100 everyone buying. This is data, not advice.

How the Pulse works

Pulse runs from −100 (everyone selling) to +100 (everyone buying). Half comes from insiders: real buyers vs. real sellers in the last 90 days (Form 4). Half comes from funds: funds that bought vs. funds that sold last quarter (13F). 13F is a snapshot of long positions on the last day of the quarter, filed up to 45 days later. It does not show short positions or trades since then.

Who owns it

62 funds report owning MREO, same as the quarter before

Holdings as of Jun 30, 2026
New17
Added10
Held26
Trimmed9
Sold out17

Last quarter

Who bought and who sold

Apr–Jun 2026
EcoR1 Capital, LLC
−93%
Newtyn Management, LLC
−58%

Change in shares held from Mar 31 to Jun 30, 2026, biggest holdings first. Only funds that hold 500 stocks or fewer and $1M+ of this one: index funds and banks own almost everything, so their changes say little. Bars stop at ±100%.

Insider trades · last 12 months

Real buys and sales

No insider filings loaded for the last 12 months.

Top holders

Biggest funds in MREO

As of Jun 30, 2026
FundOwnsValueChange
Rubric Capital Management LP1.9%$4.86MSame
683 Capital Management, LLC1.5%$3.74M−2%
Bank of America Corp1.0%$2.6MSame
Defilade Capital Management, L.P.0.9%$2.4MSame
Newtyn Management, LLC0.4%$953K−58%

"Owns" is shares reported divided by shares outstanding.

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

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