# EDGAR Filing Document

**Accession Number:** 0001870044
**File Stem:** 0001104659-25-115397
**Filing Date:** 2025-11
**Character Count:** 8751
**Document Hash:** 7fa2a7d6cd82a68e83868fba689ffea3
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-115397.hdr.sgml**: 20251124

**ACCESSION NUMBER**: 0001104659-25-115397

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251124

**DATE AS OF CHANGE**: 20251124

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Nyxoah SA
- **CENTRAL INDEX KEY:** 0001857190
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** C9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-92681
- **FILM NUMBER:** 251512736

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** RUE EDOUARD BELIN 12
- **CITY:** MONT-SAINT-GUIBERT
- **PROVINCE COUNTRY:** C9
- **ZIP:** 1435
- **BUSINESS PHONE:** 3210222355

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** RUE EDOUARD BELIN 12
- **CITY:** MONT-SAINT-GUIBERT
- **PROVINCE COUNTRY:** C9
- **ZIP:** 1435
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cochlear Ltd
- **CENTRAL INDEX KEY:** 0001870044

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** C3
- **FISCAL YEAR END:** 0630

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 1 UNIVERSITY AVENUE
- **STREET 2:** MACQUARIE UNIVERSITY
- **CITY:** NEW SOUTH WALES
- **STATE:** C3
- **ZIP:** 2109
- **BUSINESS PHONE:** 6(129)425-5239

**MAIL ADDRESS:**
- **STREET 1:** 1 UNIVERSITY AVENUE
- **STREET 2:** MACQUARIE UNIVERSITY
- **CITY:** NEW SOUTH WALES
- **STATE:** C3
- **ZIP:** 2109

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 4)**

**Nyxoah SA**

*(Name of Issuer)*

**Ordinary Shares**

*(Title of Class of Securities)*

**B6S7WD106**

*(CUSIP Number)*

**Rob McGrory, General Counsel**<br>Cochlear Limited<br>1 University Ave., Macquarie University<br>New South Wales C3 2109<br>61-2-9425-5239

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**11/20/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **B6S7WD106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Cochlear Investments Pty Ltd** | Name of reporting person<br>**Cochlear Investments Pty Ltd** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**C3** | Citizenship or place of organization<br>**C3** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**5847283.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**5847283.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5847283.00** | Aggregate amount beneficially owned by each reporting person<br>**5847283.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**13.59%** | Percent of class represented by amount in Row (11)<br>**13.59%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** Based on 43,026,460 ordinary shares ("Ordinary Shares") of Nyxoah S.A. (the "Issuer") outstanding, as stated in the Issuer's press release issued on November 20, 2025.

| **CUSIP No.** | **B6S7WD106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Cochlear Ltd** | Name of reporting person<br>**Cochlear Ltd** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**C3** | Citizenship or place of organization<br>**C3** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**5847283.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**5847283.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5847283.00** | Aggregate amount beneficially owned by each reporting person<br>**5847283.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**13.59%** | Percent of class represented by amount in Row (11)<br>**13.59%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

**Comment for Reporting Person:** Based on 43,026,460 Ordinary Shares of the Issuer outstanding, as stated in the Issuer's press release issued on November 20, 2025.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Ordinary Shares

**(b) Name of Issuer:**
Nyxoah SA

**(c) Address of Issuer's Principal Executive Offices:**
Rue Edouard Belin 12, Mont-Saint-Guibert, C9, 1435

**Item 5. Interest in Securities of the Issuer**

**(a)**
As of the date hereof, Cochlear Investments directly owns 5,847,283 Ordinary Shares, representing 13.59% of the outstanding Ordinary Shares.

**(b)**
Cochlear Limited is the parent company of Cochlear Investments. As a result, Cochlear Limited may be deemed to indirectly beneficially own the Ordinary Shares directly held by Cochlear Investments.

The percentage of outstanding Ordinary Shares that may be deemed to be beneficially owned by each Reporting Person is set forth on line 13 of the cover sheet hereof. Such percentage was calculated based on 43,026,460 Ordinary Shares outstanding, as stated in the Issuer's press release issued on November 20, 2025.

The Reporting Persons do not have the right to acquire any additional Ordinary Shares.

**(c)**
The reported share amounts for the Reporting Persons reflect amounts as of the date hereof. Other than the purchase by Cochlear Investments Pty Limited of 215,964 Ordinary Shares pursuant to the Issuer's public offering of Ordinary Shares pursuant to the Issuer's prospectus supplement filed with the Securities and Exchange Commission on November 13, 2025, the Reporting Persons have not effected any transactions in the Ordinary Shares during the past 60 days.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Cochlear Investments Pty Ltd

**Signature:** /s/ Kristy Jo

**Name/Title:** Kristy Jo/Company Secretary

**Date:** 11/24/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Cochlear Ltd

**Signature:** /s/ Rob McGrory

**Name/Title:** Rob McGrory/Company Secretary

**Date:** 11/24/2025