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Disclosery

GHRS GH RESEARCH PLC

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Stock (common), issuer CIK 1855129

53 managers (53 13F filers) reported a position in GHRS shares at 2025-12-31, 46,564,278 shares in all. 14 filers opened a position and 8 filers sold out during the quarter.

Managers
53
13F filers
53
New
14
Added
18
Reduced
14
Sold out
8
Shares held by filers
46,564,278

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Lynx1 Capital Management LPin group Lynx1 Capital Management LP10,406,575$132M26.75%+1,805,38613F-HRTimelineGroup
BVF INC/ILin group BVF INC/IL8,827,712$112M3.77%013F-HRTimelineGroup
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.7,676,697$97.5M1%013F-HRTimelineGroup
RTW INVESTMENTS, LP5,933,815$75.4M0.75%+364,25113F-HRTimeline
FMR LLCin group FMR LLC5,136,045$65.2M<0.01%-191,00013F-HRTimelineGroup
Avoro Capital Advisors LLC1,800,000$22.9M0.22%new13F-HR/ATimeline
Cormorant Asset Management, LP1,300,000$16.5M0.94%-616,43913F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.712,300$9.05M0.07%+2,98813F-HRTimelineGroup
Verition Fund Management LLC673,735$8.56M0.05%-4,75413F-HRTimeline
5AM Venture Management, LLC572,665$7.27M2.29%013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.434,401$5.52M<0.01%+376,54213F-HRTimelineGroup
Troluce Capital Advisors LLC373,212$4.74M3.5%+326,49013F-HRTimeline
UBS Group AGin group UBS Group AG363,381$4.61M<0.01%-148,08313F-HRTimelineGroup
Squadron Capital Management LLC315,000$4M1.79%13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC295,926$3.76M<0.01%-567,67613F-HRTimelineGroup
CenterBook Partners LP283,441$3.6M0.18%+117,28813F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP240,764$3.06M<0.01%+71,26413F-HRTimelineGroup
HighVista Strategies LLC240,524$3.05M0.79%-1,37013F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.204,975$2.6M0.01%013F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC112,184$1.42M0.04%+28,63413F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC80,986$1.03M<0.01%+69,91113F-HR/ATimelineGroup
AdvisorShares Investments LLC67,112$852K0.14%+13,12113F-HRTimeline
Trexquant Investment LP54,776$696K0.01%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY51,404$653K<0.01%+47,16213F-HR/ATimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC50,005$635K<0.01%+27,00113F-HRTimelineGroup
BIT Capital GmbH50,000$635K0.03%new13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd44,446$564K0.01%new13F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC35,645$453K<0.01%013F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP32,828$417K<0.01%-14513F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC26,258$333K<0.01%-68,14413F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…20,408$259K0.07%+11,53913F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO18,881$240K<0.01%+4,98113F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP18,565$236K0.02%new13F-HRTimeline
HRT FINANCIAL LP15,936$202K<0.01%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…15,877$202K<0.01%new13F-HRTimelineGroup
HighTower Advisors, LLC15,600$198K<0.01%-50013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP10,821$137K<0.01%-17113F-HRTimelineGroup
Lion Point Capital, LP10,200$130K0.67%new13F-HRTimeline
China Universal Asset Management Co., L…10,107$128K0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.10,025$127K<0.01%-10013F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/4,450$56.5K<0.01%+4,17513F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC4,404$55.9K<0.01%+4,37313F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.in group Mirae Asset Global Investment…3,014$38.3K<0.01%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC2,118$26.9K<0.01%+82213F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA1,810$23K<0.01%+5213F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS1,337$17K<0.01%-4,86513F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,250$15.9K<0.01%013F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.1,218$15.5K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…770$9.78K<0.01%new13F-HRTimelineGroup
Global Retirement Partners, LLC400$5.08K<0.01%-40013F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.207$3K<0.01%new13F-HRTimelineGroup
SIMPLEX TRADING, LLC48$609<0.01%-4,16113F-HRTimeline
SBI Securities Co., Ltd.20$254<0.01%new13F-HRTimeline