As of November 6, 2026, 3 holders' latest Schedule 13D or 13G filings report owning 5% or more of Gh Research Plc. The largest reported stake is Lynx1 Capital Management LP's, at 19.3%. 11 filings are on record since August 6, 2025 (Schedule 13G/A, August 14, 2026).
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Key facts
- · Reporting person: Fmr LLC · Sole voting: 6,482,945 · Shared voting: 0 · Sole dispositive: 6,482,945 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-11-05
- · Reporting person: Lynx1 Capital Management LP · Sole voting: 0 · Shared voting: 13,263,288 · Sole dispositive: 0 · Shared dispositive: 13,263,288 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: RA Capital Management, L.P. · Sole voting: 0 · Shared voting: 4,897,182 · Sole dispositive: 0 · Shared dispositive: 4,897,182 · SCHEDULE 13G/A, 2026-08-14
- · Holder: Lynx1 Capital Management LP · Percent: 17.4% · SCHEDULE 13G/A
- · Holder: Lynx1 Capital Management LP · Percent: 15.2% · SCHEDULE 13G/A
Gh Research Plc has 11 Schedule 13D or 13G filings on record since 2025-08-06. 3 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Lynx1 Capital Management LP | 19.3% | 13,263,288 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Fmr LLC | 9.4% | 6,482,945 | SCHEDULE 13G/A, 2026-11-05 | 2026-09-30 |
| RA Capital Management, L.P. | 7.1% | 4,897,182 | SCHEDULE 13G/A, 2026-08-14 | 2026-08-12 |
| 2.9% | 1,784,266 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
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More on Gh Research Plc and the records around it.
Gh Research Plc elsewhere on the record
Companies that share a holder
- Lynx1 Capital Management LP also filed stake reports on 11 other companies: C4 Therapeutics, Inc. (Aug 2026), iBio, Inc. (Aug 2026), Stoke Therapeutics, Inc. (Aug 2026)
- RA Capital Management, L.P. also filed stake reports on 100 other companies: Climb Bio, Inc. (Nov 2026), Bambusa Therapeutics, Inc. (Nov 2026), SOLID BIOSCIENCES INC. (Nov 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
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What the Full Report on Gh Research Plc covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
11 cited sources found
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Lynx1 Capital Management LP | 0 | 13,263,288 | 0 | 13,263,288 | SCHEDULE 13G/A, 2026-08-14 |
| Weston Nichols | 0 | 13,263,288 | 0 | 13,263,288 | SCHEDULE 13G/A, 2026-08-14 |
| Fmr LLC | 6,482,945 | 0 | 6,482,945 | 0 | SCHEDULE 13G/A, 2026-11-05 |
| Abigail P. Johnson | 0 | 0 | 6,482,945 | 0 | SCHEDULE 13G/A, 2026-11-05 |
| RA Capital Management, L.P. | 0 | 4,897,182 | 0 | 4,897,182 | SCHEDULE 13G/A, 2026-08-14 |
| Peter Kolchinsky | 0 | 4,897,182 | 0 | 4,897,182 | SCHEDULE 13G/A, 2026-08-14 |
| Rajeev Shah | 0 | 4,897,182 | 0 | 4,897,182 | SCHEDULE 13G/A, 2026-08-14 |
| RA Capital Healthcare Fund, L.P. | 0 | 4,768,564 | 0 | 4,768,564 | SCHEDULE 13G/A, 2026-08-14 |
The latest filing identifies Gh Research Plc by CUSIP G3855L106 and gives its principal executive office as JOSHUA DAWSON HOUSE, DAWSON STREET, DUBLIN 2 (SCHEDULE 13G/A, 2026-11-05).
What the percentages are based on
Row 11 of each Reporting Person's cover page to this Schedule 13G/A sets forth the percentage of the ordinary shares of the Issuer beneficially owned by such Reporting Person and is incorporated by reference.RA Capital Management, L.P., SCHEDULE 13G/A, 2026-08-14
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-06 | Fmr LLC | 8.2% | SCHEDULE 13G/A |
| 2025-08-14 | RA Capital Management, L.P. | 12.4% | SCHEDULE 13G/A |
| 2025-08-14 | Terwey Theis H | 7.6% | SCHEDULE 13G/A |
| 2025-11-14 | Lynx1 Capital Management LP | 13.9% | SCHEDULE 13G/A |
| 2025-11-14 | Terwey Theis H | 2.9% | SCHEDULE 13G/A |
| 2026-02-17 | Lynx1 Capital Management LP | 16.8% | SCHEDULE 13G/A |
| 2026-05-15 | Lynx1 Capital Management LP | 15.2% | SCHEDULE 13G/A |
| 2026-05-18 | Lynx1 Capital Management LP | 17.4% | SCHEDULE 13G/A |
| 2026-08-14 | Lynx1 Capital Management LP | 19.3% | SCHEDULE 13G/A |
| 2026-08-14 | RA Capital Management, L.P. | 7.1% | SCHEDULE 13G/A |
| 2026-11-05 | Fmr LLC | 9.4% | SCHEDULE 13G/A |
Questions about who owns Gh Research Plc
Who owns Gh Research Plc?
On this page, 3 holders' latest ownership filings report 5% or more of Gh Research Plc: Lynx1 Capital Management LP (19.3%, Schedule 13G/A, filed 2026-08-14), Fmr LLC (9.4%, Schedule 13G/A, filed 2026-11-05) and RA Capital Management, L.P. (7.1%, Schedule 13G/A, filed 2026-08-14).
Who are the largest shareholders of Gh Research Plc?
By the share each holder's latest filing reports, the largest holders of Gh Research Plc on this page are Lynx1 Capital Management LP (19.3%), Fmr LLC (9.4%) and RA Capital Management, L.P. (7.1%).
When did Lynx1 Capital Management LP buy into Gh Research Plc?
The filings give report dates, not purchase dates. The earliest filing from Lynx1 Capital Management LP on this page is the Schedule 13G/A, filed 2025-11-14, reporting 13.9%; its latest, Schedule 13G/A filed 2026-08-14, reports 19.3%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 11 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.