Cochlear updates 5.91% stake in Nyxoah

Cochlear Investments Pty Ltd and Cochlear Limited have updated their ownership disclosure for Nyxoah SA.

Rhea-AI Filing Summary

Cochlear Investments Pty Ltd and Cochlear Limited have updated their ownership disclosure for Nyxoah SA. Cochlear Investments directly holds 5,847,283 Ordinary Shares, which represents 5.91% of Nyxoah’s outstanding Ordinary Shares, based on 98,894,961 shares outstanding as stated in a recent prospectus supplement.

Cochlear Limited, as the parent of Cochlear Investments, may be deemed to indirectly beneficially own the same 5,847,283 shares, with shared voting and dispositive power reported and no sole voting or dispositive power. The filing states that the reporting persons have not conducted any transactions in Nyxoah shares during the past 60 days and do not have rights to acquire additional Ordinary Shares.

Insights

Equity ownership analyst

Cochlear restates a 5.91% Nyxoah stake with no recent trades.

The filing shows Cochlear Investments directly owns 5,847,283 Nyxoah Ordinary Shares, and Cochlear Limited may be deemed to beneficially own them indirectly. This equates to 5.91% of Nyxoah’s 98,894,961 Ordinary Shares outstanding.

All voting and dispositive power over these shares is reported as shared, with no sole control. The amendment notes no Nyxoah share transactions by the reporting persons in the last 60 days and no rights to acquire additional shares, suggesting a stable position until further disclosures.

Key Figures

Nyxoah shares held: 5,847,283 shares Ownership percentage: 5.91% Shares outstanding baseline: 98,894,961 shares +2 more

5 metrics

Nyxoah shares held 5,847,283 shares Ordinary Shares directly owned by Cochlear Investments as of filing date

Ownership percentage 5.91% Percent of Nyxoah Ordinary Shares beneficially owned by reporting persons

Shares outstanding baseline 98,894,961 shares Nyxoah Ordinary Shares outstanding per June 5, 2026 prospectus supplement

Shared voting power 5,847,283 shares Shares over which reporting persons have shared voting power

Shared dispositive power 5,847,283 shares Shares over which reporting persons have shared dispositive power

Key Terms

beneficially own, Ordinary Shares, shared voting power, shared dispositive power, +2 more

6 terms

beneficially own financial

"Cochlear Limited may be deemed to indirectly beneficially own the Ordinary Shares directly held by Cochlear Investments."

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

Ordinary Shares financial

"As of the date hereof, Cochlear Investments directly owns 5,847,283 Ordinary Shares, representing 5.91% of the outstanding Ordinary Shares."

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

shared voting power financial

"Shared Voting Power 5,847,283.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"Shared Dispositive Power 5,847,283.00"

percent of class financial

"Percent of class represented by amount in Row (11) 5.91 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

Schedule 13D regulatory

"If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this"

A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What percentage of Nyxoah (NYXH) does Cochlear currently report owning?

Cochlear reports beneficial ownership of 5.91% of Nyxoah’s Ordinary Shares. This comes from 5,847,283 shares, calculated against 98,894,961 Ordinary Shares outstanding as disclosed in Nyxoah’s June 5, 2026 prospectus supplement.

How many Nyxoah (NYXH) shares does Cochlear Investments Pty Ltd hold?

Cochlear Investments Pty Ltd directly holds 5,847,283 Nyxoah Ordinary Shares. This entire position is reported with shared voting and dispositive power and represents 5.91% of Nyxoah’s outstanding Ordinary Shares based on 98,894,961 shares outstanding.

Does Cochlear Limited indirectly own Nyxoah (NYXH) shares?

Yes. Cochlear Limited is the parent of Cochlear Investments and may be deemed to indirectly beneficially own 5,847,283 Nyxoah Ordinary Shares. The filing attributes shared voting and dispositive power over this entire block to the reporting persons.

Has Cochlear traded Nyxoah (NYXH) shares in the last 60 days?

The filing states that the reporting persons have not effected any transactions in Nyxoah Ordinary Shares during the past 60 days. The disclosed 5,847,283-share position therefore reflects holdings as of the filing date without recent trading activity.

Can Cochlear acquire additional Nyxoah (NYXH) Ordinary Shares under existing rights?

According to the disclosure, the reporting persons do not have the right to acquire any additional Nyxoah Ordinary Shares. The reported 5,847,283 shares therefore represent their entire beneficial ownership position as of the date of the amendment.

What share count did Cochlear use to calculate its 5.91% Nyxoah (NYXH) stake?

The 5.91% ownership figure is based on 98,894,961 Nyxoah Ordinary Shares outstanding. This outstanding share number comes from Nyxoah’s prospectus supplement filed with the SEC on June 5, 2026, as referenced in the filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/11/2026 - 04:15 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 5)

Nyxoah SA

(Name of Issuer)

Ordinary Shares

(Title of Class of Securities)

B6S7WD106

(CUSIP Number)

Rob McGrory
1 University Avenue,
Macquarie University, C3, 2109
61294255239

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

06/10/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): B6S7WD106

1

Name of reporting person

Cochlear Investments Pty Ltd

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

AUSTRALIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 5,847,283.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 5,847,283.00

11

Aggregate amount beneficially owned by each reporting person

5,847,283.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

5.91 %

14

Type of Reporting Person (See Instructions)

CO

Comment for Type of Reporting Person:

Based on 98,894,961 ordinary shares ("Ordinary Shares") of Nyxoah S.A. (the "Issuer") outstanding, as stated in the Issuer's prospectus supplement filed with the U.S. Securities and Exchange Commission (the "SEC") on June 5, 2026.

SCHEDULE 13D

CUSIP Number(s): B6S7WD106

1

Name of reporting person

Cochlear Limited

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

AUSTRALIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 5,847,283.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 5,847,283.00

11

Aggregate amount beneficially owned by each reporting person

5,847,283.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

5.91 %

14

Type of Reporting Person (See Instructions)

CO

Comment for Type of Reporting Person:

Based on 98,894,961 Ordinary Shares outstanding, as stated in the Issuer's prospectus supplement filed with the SEC on June 5, 2026.

SCHEDULE 13D

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, BELGIUM , 1435.
Item 1 Comment: This Amendment No. 5 (this "Amendment") amends and supplements the Schedule 13D filed by the Reporting Persons on July 16, 2021 (the "Original Schedule 13D") as amended by Amendment No. 4 to the Original Schedule 13D filed by the Reporting Persons dated November 24, 2025 ("Amendment No. 4"), Amendment No. 3 to the Original Schedule 13D filed by the Reporting Persons dated October 10, 2024 ("Amendment No. 3"), Amendment No. 2 to the Original Schedule 13D filed by the Reporting Persons on May 30, 2024 ("Amendment No. 2") and Amendment No. 1 to the Original Schedule 13D filed by the Reporting Persons on March 29, 2023 (together with Amendment No. 4, Amendment No. 3, Amendment No. 2and the Original Schedule 13D, the "Schedule 13D"). Except as specifically provided herein, this Amendment does not modify any of the information previously reported in the Schedule 13D. Capitalized terms used but not otherwise defined in this Amendment shall have the same meanings ascribed to them in the Schedule 13D.
Item 5.	Interest in Securities of the Issuer
(a)	As of the date hereof, Cochlear Investments directly owns 5,847,283 Ordinary Shares, representing 5.91% 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 98,894,961 Ordinary Shares outstanding, as stated in the Issuer's prospectus supplement filed with the SEC on June 5, 2026. 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. 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.

Cochlear Investments Pty Ltd

Signature:	/s/ Kristy Jo
Name/Title:	Kristy Jo / Company Secretary
Date:	06/11/2026

Cochlear Limited

Signature:	/s/ Rob McGrory
Name/Title:	Rob McGrory / Company Secretary
Date:	06/11/2026