GH Research PLC - Ordinary shares, nominal value $0.025 per share (GHRS) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2021 to Q3 2025

Type / Class
Equity / Ordinary shares, nominal value $0.025 per share
Symbol
GHRS on Nasdaq
Shares outstanding
61,526,414
Price per share
$12.50
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
44,533,428
Total reported value
$618,134,274
% of total 13F portfolios
0%
Share change
+990,085
Value change
+$14,411,815
Number of holders
47
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of GH Research PLC - Ordinary shares, nominal value $0.025 per share (GHRS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BIOTECHNOLOGY VALUE FUND L P 14% $79,449,408 8,827,712 BVF PARTNERS L P/IL 31 Mar 2025
Lynx1 Capital Management LP 14% +37% $122,997,003 +$32,148,116 8,601,189 +35% LYNX1 CAPITAL MANAGEMENT LP 30 Sep 2025
RA CAPITAL MANAGEMENT, L.P. 12% +11% $106,245,486 +$10,131,558 7,676,697 +11% RA Capital Management, L.P. 30 Jun 2025
RTW INVESTMENTS, LP 8.9% $49,497,921 5,499,769 RTW Investments, LP 31 Mar 2025
FMR LLC 8.2% +19% $51,226,979 +$8,476,204 5,092,145 +20% FMR LLC 30 Jun 2025
Terwey Theis H 2.9% -59% $25,515,004 -$41,593,509 1,784,266 -62% Terwey Theis H 30 Sep 2025

As of 30 Sep 2025, 47 institutional investors reported holding 44,533,428 shares of GH Research PLC - Ordinary shares, nominal value $0.025 per share (GHRS). This represents 72% of the company’s total 61,526,414 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of GH Research PLC - Ordinary shares, nominal value $0.025 per share (GHRS) together control 72% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BVF INC/IL 14% 8,827,712 0% 5.1% $126,236,282
Lynx1 Capital Management LP 14% 8,601,189 +27% 21% $104,311,679
RA CAPITAL MANAGEMENT, L.P. 12% 7,676,697 0% 1.4% $109,776,767
RTW INVESTMENTS, LP 9.1% 5,569,564 +0.53% 0.98% $79,644,765
FMR LLC 8.7% 5,327,045 +4.6% 0% $76,176,744
Cormorant Asset Management, LP 3.1% 1,916,439 -4.6% 1.9% $27,405,078
Deep Track Capital, LP 2% 1,250,000 -38% 0.5% $17,875,000
MILLENNIUM MANAGEMENT LLC 1.4% 863,602 +324% 0.01% $12,349,509
Jefferies Financial Group Inc. 1.2% 709,312 0% 0.09% $10,143,162
Verition Fund Management LLC 1.1% 678,489 +3.2% 0.06% $9,702,393
5AM Venture Management, LLC 0.93% 572,665 0% 3% $8,189,110
STEMPOINT CAPITAL LP 0.89% 545,275 +441% 1.6% $7,797,433
UBS Group AG 0.83% 511,464 +12% 0% $7,313,935
HighVista Strategies LLC 0.39% 241,894 +363% 0.85% $3,459,085
Alyeska Investment Group, L.P. 0.33% 204,975 -20% 0.01% $2,931,143
MARSHALL WACE, LLP 0.28% 169,500 0% $2,423,850
CenterBook Partners LP 0.27% 166,153 0.12% $2,375,988
CITADEL ADVISORS LLC 0.15% 94,402 0% $1,349,949
BOOTHBAY FUND MANAGEMENT, LLC 0.14% 83,550 +504% 0.03% $1,194,765
Point72 Asset Management, L.P. 0.13% 76,958 0% $1,100,499
BlackRock, Inc. 0.09% 57,859 -11% 0% $827,384
AdvisorShares Investments LLC 0.09% 53,991 +41% 0.13% $772,071
Troluce Capital Advisors LLC 0.08% 46,722 -46% 0.24% $668,125
Squarepoint Ops LLC 0.06% 36,103 0% $516,273
GEODE CAPITAL MANAGEMENT, LLC 0.06% 35,645 +2.9% 0% $509,723

Institutional Holders of GH Research PLC - Ordinary shares, nominal value $0.025 per share (GHRS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q3 44,533,428 $618,134,274 +$14,411,815 $14.30 47
2025 Q2 43,554,151 $530,925,463 +$12,435,266 $12.19 37
2025 Q1 42,619,365 $470,078,472 +$132,646,471 $11.03 35
2024 Q4 30,697,472 $214,886,003 +$667,797 $7.00 30
2024 Q3 30,520,551 $204,184,484 +$470,359 $6.69 28
2024 Q2 30,425,860 $354,768,061 +$9,911,656 $11.66 29
2024 Q1 29,598,383 $315,521,410 +$10,749,556 $10.66 32
2023 Q4 29,599,182 $171,675,543 +$1,669,586 $5.80 33
2023 Q3 29,002,299 $291,473,643 -$8,205,763 $10.05 28
2023 Q2 29,634,294 $351,618,806 -$693,692 $11.86 34
2023 Q1 29,693,376 $237,250,217 -$9,782,816 $7.99 29
2022 Q4 30,892,511 $299,454,602 -$7,759,389 $9.72 32
2022 Q3 31,598,812 $367,177,200 -$9,454,362 $11.62 32
2022 Q2 32,559,951 $324,989,656 +$3,718,413 $9.98 33
2022 Q1 32,084,312 $586,822,000 +$37,199,225 $18.29 30
2021 Q4 30,046,921 $700,993,000 +$26,953,752 $23.33 29
2021 Q3 28,509,902 $625,158,000 +$21,272,290 $22.06 29
2021 Q2 27,592,126 $593,693,000 +$593,693,239 $21.73 34