Vault-13

GH RESEARCH PLC GHRS

ORDINARY SHARES · Common Stock · CUSIP G3855L106

35 institutional holders +5 vs Q1 2023
29,634,29429.6m shares reported held*
$351.6mreported value*
5 new 8 added 8 reduced 0 sold out net sold ≈ $51.4m (-4.3m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $11.87.

Trends to Q2 2023

Institutional holders

Managers reporting a position, each quarter

02040Q3 22: 34Q4 22: 33Q1 23: 30Q2 23: 3535Q3 22Q4 22Q1 23Q2 23
Numbers
QuarterHolders
Q3 202234
Q4 202233
Q1 202330
Q2 202335

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
20020Q4 22: 11 bought or addedQ4 22: 11 cut or sold outQ4 22Q1 23: 10 bought or addedQ1 23: 13 cut or sold outQ1 23Q2 23: 13 bought or addedQ2 23: 8 cut or sold outQ2 23
Numbers
QuarterBought or addedCut or sold out
Q4 20221111
Q1 20231013
Q2 2023138

Biggest buyers

Lynx1 Capital Management LP New +969,374+969.4k
5AM Venture Management, LLC New +152,022+152.0k
RENAISSANCE TECHNOLOGIES LLC Added +14,700+14.7k
Corton Capital Inc. New +12,135+12.1k
BANK OF MONTREAL /CAN/ New +10,641+10.6k
BlackRock Inc. Added +9,833+9.8k
RA CAPITAL MANAGEMENT, L.P. Added +6,172+6.2k
PEAK6 Investments LLC Added +2,357+2.4k
LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP/MA New +2,000+2.0k
MORGAN STANLEY Added +1,883+1.9k

Biggest sellers

FMR LLC Reduced -4,424,577-4.4m
ORBIMED ADVISORS LLC Reduced -922,700-922.7k
Verition Fund Management LLC Reduced -144,501-144.5k
Mirae Asset Global Investments Co., Ltd. Reduced -18,000-18.0k
Tower Research Capital LLC (TRC) Reduced -4,014-4.0k
MILLENNIUM MANAGEMENT LLC Reduced -2,305-2.3k
AdvisorShares Investments LLC Reduced -1,231-1.2k
STATE STREET CORP Reduced -192-192

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Lynx1 Capital Management LP 13G · passive investor +1.9 pts · filed 2026-08-14 19.3% +1.9 pts 13.3m≈ $354.0m 2026-08-14
BIOTECHNOLOGY VALUE FUND L P 13G · exempt (held before listing) filed 2025-05-15 14.2% 8.8m≈ $237.3m 2025-05-15
RTW INVESTMENTS, LP 13G · institution filed 2025-05-15 8.9% 5.5m≈ $147.8m 2025-05-15
FMR LLC 13G · institution +1.3 pts · filed 2025-08-06 8.2% +1.3 pts 5.1m≈ $136.9m 2025-08-06
RA CAPITAL MANAGEMENT, L.P. 13G · passive investor -5.3 pts · filed 2026-08-14 7.1% -5.3 pts 4.9m≈ $130.2m 2026-08-14

Fell to 5% or below in the last year: Terwey Theis H (2.9%, 2025-11-14)

Insider purchases and sales in Q2 2023

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported in Q2 2023.

Holders, Q2 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BVF INC/IL 3.07% of their portfolio San Francisco, CA 9,275,1589.3m $110.0m $110.0m 3.07% Unchanged
2 RA CAPITAL MANAGEMENT, L.P. 1.25% of their portfolio BOSTON, MA 5,587,3335.6m $66.3m $66.3m 1.25% Added +6.2k +6,172
3 FMR LLC 0.00% of their portfolio BOSTON, MA 4,126,4654.1m $49.0m $49.0m 0.00% Reduced -4.4m -4,424,577
4 Venrock Adviser, LLC 6.67% of their portfolio NEW YORK, NY 3,517,1253.5m $41.7m $41.7m 6.67% Unchanged
5 RTW INVESTMENTS, LP 0.49% of their portfolio NEW YORK, NY 2,168,9572.2m $25.7m $25.7m 0.49% Unchanged
6 Lynx1 Capital Management LP 7.54% of their portfolio DORADO, PR 969,374969.4k $11.5m $11.5m 7.54% New
7 Verition Fund Management LLC 0.15% of their portfolio GREENWICH, CT 796,172796.2k $9.4m $9.4m 0.15% Reduced -144.5k -144,501
8 ORBIMED ADVISORS LLC 0.16% of their portfolio New York, NY 736,315736.3k $8.7m $8.7m 0.16% Reduced -922.7k -922,700
9 Cormorant Asset Management, LP 0.40% of their portfolio BOSTON, MA 593,043593.0k $7.0m $7.0m 0.40% Unchanged
10 Deep Track Capital, LP 0.28% of their portfolio GREENWICH, CT 499,400499.4k $5.9m $5.9m 0.28% Unchanged
11 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 393,738393.7k $4.7m $4.7m 0.00% Added +1.9k +1,883
12 ACUTA CAPITAL PARTNERS, LLC 1.97% of their portfolio REDWOOD CITY, CA 244,828244.8k $2.9m $2.9m 1.97% Added +1.6k +1,578
13 5AM Venture Management, LLC 0.45% of their portfolio SAN FRANCISCO, CA 152,022152.0k $1.8m $1.8m 0.45% New
14 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 144,571144.6k $1.7m $1.7m 0.00% Added +13 +13
15 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 79,87379.9k $947.7k $947.7k 0.00% Reduced -18.0k -18,000
16 Laurion Capital Management LP 0.03% of their portfolio NEW YORK, NY 64,93064.9k $770.4k $770.4k 0.03% Unchanged
17 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 50,02950.0k $593.6k $593.6k 0.00% Added +209 +209
18 AdvisorShares Investments LLC 0.15% of their portfolio BETHESDA, MD 45,12945.1k $535.5k $535.5k 0.15% Reduced -1.2k -1,231
19 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 32,09032.1k $380.7k $380.7k 0.00% Unchanged
20 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 26,39526.4k $313.2k $313.2k 0.00% Reduced -2.3k -2,305
21 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 25,50025.5k $303.0k $303.0k 0.00% Added +14.7k +14,700
22 PURA VIDA INVESTMENTS, LLC 0.12% of their portfolio NEW YORK, NY 25,00025.0k $296.6k $296.6k 0.12% Unchanged
23 PEAK6 Investments LLC 0.02% of their portfolio CHICAGO, IL 23,31723.3k $276.7k $276.7k 0.02% Added +2.4k +2,357
24 BlackRock Inc. 0.00% of their portfolio New York, NY 14,81614.8k $175.8k $175.8k 0.00% Added +9.8k +9,833
25 Corton Capital Inc. 0.07% of their portfolio Carrying Place, A6 12,13512.1k $144.0k $144.0k 0.07% New
26 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 10,70410.7k $127.0k $127.0k 0.00% Reduced -192 -192
27 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 10,64110.6k $133.3k $133.3k 0.00% New
28 Tortoise Investment Management, LLC 0.01% of their portfolio WHITE PLAINS, NY 3,0813.1k $36.6k $36.6k 0.01% Unchanged
29 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 2,7722.8k $32.9k $32.9k 0.00% Unchanged
30 LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP/MA 0.00% of their portfolio BOSTON, MA 2,0002.0k $23.7k $23.7k 0.00% New
31 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 1,0001.0k $12.0k $12.0k 0.00% Unchanged
32 Global Retirement Partners, LLC 0.00% of their portfolio San Rafael, CA 220220 $2.6k $2.6k 0.00% Unchanged
33 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 100100 $1.2k $1.2k 0.00% Unchanged
34 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 6161 $724 $724 0.00% Reduced -4.0k -4,014
35 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged