As of November 6, 2026, 3 holders' latest Schedule 13D or 13G filings report owning 5% or more of Nyxoah SA. The largest reported stake is Orin Hirschman's, at 14.5%. 7 filings are on record since August 14, 2025 (Schedule 13G, June 22, 2026).
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Key facts
- · Reporting person: CVI Investments, Inc. · Sole voting: 0 · Shared voting: 11,014,861 · Sole dispositive: 0 · Shared dispositive: 11,014,861 · SCHEDULE 13G/A, 2026-08-14
- · Reporting person: ResMed Inc. · Sole voting: 1,943,828 · Shared voting: 0 · Sole dispositive: 1,943,828 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-07-01
- · Reporting person: Orin Hirschman · Sole voting: 14,534,880 · Shared voting: 0 · Sole dispositive: 14,534,880 · Shared dispositive: 0 · SCHEDULE 13G, 2026-06-22
- · Reporting person: Cochlear Investments Pty Ltd · Sole voting: 0 · Shared voting: 5,847,283 · Sole dispositive: 0 · Shared dispositive: 5,847,283 · SCHEDULE 13D/A, 2026-06-11
- · Holder: CVI Investments, Inc. · Percent: 9.9% · SCHEDULE 13G
Nyxoah SA has 7 Schedule 13D or 13G filings on record since 2025-08-14. 3 holders' latest filing reports 5% or more of ordinary shares, no par value. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| 14.5% | 14,534,880 | SCHEDULE 13G, 2026-06-22 | 2026-06-10 | |
| CVI Investments, Inc. | 9.9% | 11,014,861 | SCHEDULE 13G/A, 2026-08-14 | 2026-06-30 |
| Cochlear Limited | 5.91% | 5,847,283 | SCHEDULE 13D/A, 2026-06-11 | 2026-06-10 |
| Vestal Point Capital, LP | 3.7% | 1,402,002 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| ResMed Inc. | 1.95% | 1,943,828 | SCHEDULE 13G/A, 2026-07-01 | 2026-06-30 |
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More on Nyxoah SA and the records around it.
Nyxoah SA elsewhere on the record
Companies that share a holder
- Vestal Point Capital, LP also filed stake reports on 27 other companies: Alto Neuroscience, Inc. (Aug 2026), iBio, Inc. (Aug 2026), Immunocore Holdings plc (Aug 2026)
- Orin Hirschman also filed stake reports on 46 other companies: ASPEN AEROGELS, INC. (Oct 2026), Bionano Genomics, Inc. (Oct 2026), FENNEC PHARMACEUTICALS INC. (Oct 2026)
- CVI Investments, Inc. also filed stake reports on 48 other companies: Pine Tree Acquisition Corp. (Oct 2026), Sunshine Biopharma Inc. (Oct 2026), Outlook Therapeutics, Inc. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Orin Hirschman | 14,534,880 | 0 | 14,534,880 | 0 | SCHEDULE 13G, 2026-06-22 |
| AIGH Capital Management LLC | 14,534,880 | 0 | 14,534,880 | 0 | SCHEDULE 13G, 2026-06-22 |
| CVI Investments, Inc. | 0 | 11,014,861 | 0 | 11,014,861 | SCHEDULE 13G/A, 2026-08-14 |
| Heights Capital Management, Inc. | 0 | 11,014,861 | 0 | 11,014,861 | SCHEDULE 13G/A, 2026-08-14 |
| Cochlear Investments Pty Ltd | 0 | 5,847,283 | 0 | 5,847,283 | SCHEDULE 13D/A, 2026-06-11 |
| Cochlear Limited | 0 | 5,847,283 | 0 | 5,847,283 | SCHEDULE 13D/A, 2026-06-11 |
| ResMed Inc. | 1,943,828 | 0 | 1,943,828 | 0 | SCHEDULE 13G/A, 2026-07-01 |
The latest filing identifies Nyxoah SA by CUSIP B6S7WD106 and gives its principal executive office as Rue Edouard Belin 12, Mont-Saint-Guibert (SCHEDULE 13G/A, 2026-08-14).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-14 | Vestal Point Capital, LP | 3.7% | SCHEDULE 13G/A |
| 2025-11-24 | Cochlear Ltd | 13.59% | SCHEDULE 13D/A |
| 2025-12-29 | CVI Investments, Inc. | 9.9% | SCHEDULE 13G |
| 2026-06-11 | Cochlear Limited | 5.91% | SCHEDULE 13D/A |
| 2026-06-22 | Orin Hirschman | 14.5% | SCHEDULE 13G |
| 2026-07-01 | ResMed Inc. | 1.95% | SCHEDULE 13G/A |
| 2026-08-14 | CVI Investments, Inc. | 9.9% | SCHEDULE 13G/A |
Questions about who owns Nyxoah SA
Who owns Nyxoah SA?
On this page, 3 holders' latest ownership filings report 5% or more of Nyxoah SA: Orin Hirschman (14.5%, Schedule 13G, filed 2026-06-22), CVI Investments, Inc. (9.9%, Schedule 13G/A, filed 2026-08-14) and Cochlear Limited (5.91%, Schedule 13D/A, filed 2026-06-11).
Who are the largest shareholders of Nyxoah SA?
By the share each holder's latest filing reports, the largest holders of Nyxoah SA on this page are Orin Hirschman (14.5%), CVI Investments, Inc. (9.9%) and Cochlear Limited (5.91%).
When did Orin Hirschman buy into Nyxoah SA?
The filings give report dates, not purchase dates. The earliest filing from Orin Hirschman on this page is the Schedule 13G, filed 2026-06-22, reporting 14.5%.
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%); 7 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.