Publication relating to transparency notification

Rhea-AI Summary

Nyxoah (Nasdaq: NYXH) received a transparency notification from BNP Paribas Asset Management on January 8, 2026, reporting that BNP Paribas Asset Management Europe SAS holds 1,409,791 voting rights, representing 3.28% of total voting rights as of December 31, 2025 (denominator: 43,026,460).

The crossing of the 3% threshold follows a merger on December 31, 2025 between BNP Paribas Asset Management Europe SAS and AXA Investment Managers SA; the parent holding chain includes BNP Paribas Asset Management Holding and BNP Paribas SA, with an exemption noted under the Royal Decree on disclosure of major shareholdings.

Argus Jan 12 session

-0.39% close to close Open Argus

Details

News Market Reaction – NYXH

In the Jan 12 session, NYXH declined 0.39%, reflecting a mild negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement details a transparency notification showing BNP Paribas Asset Management Europe SA...

Analysis

This announcement details a transparency notification showing BNP Paribas Asset Management Europe SAS holding 1,409,791 voting rights, or 3.28% of Nyxoah’s 43,026,460 total voting rights, crossing the 3% disclosure threshold. It follows earlier notifications about other large shareholders in late 2025. Investors tracking the story have watched how the shareholder base evolves alongside recent financings, commercial progress for the Genio system, and future regulatory or capital-markets developments.

Key Figures

BNP voting rights: 1,409,791 voting rights Ownership percentage: 3.28% Total voting rights: 43,026,460 voting rights +3 more

BNP voting rights

1,409,791 voting rights

Held by BNP Paribas Asset Management Europe SAS as of Dec 31, 2025

Ownership percentage

3.28%

Share of total voting rights (43,026,460) on Dec 31, 2025

Total voting rights

43,026,460 voting rights

Denominator used for transparency threshold calculation

Threshold crossed

3%

Legal disclosure threshold under Belgian transparency rules

Crossing date

December 31, 2025

Date on which the 3% threshold was crossed

Notification date

January 8, 2026

Date Nyxoah received transparency notification from BNP Paribas Asset Management SA

Historical Context

5 past events · Latest: Dec 29

5 events

1. Dec 29

   Conference participation

   24h Move

   +6.3%

   Management presentation at J.P. Morgan Healthcare Conference with strategy update.

2. Dec 19

   Debt financing

   24h Move

   -2.1%

   Issuance of first tranche of convertible bonds raising €22.5 million.

3. Dec 17

   Product launch

   24h Move

   +0.0%

   Commercial launch of Genio neurostimulation system in the Netherlands.

4. Dec 02

   Transparency filing

   24h Move

   -0.7%

   Transparency notifications on changes in major shareholder voting rights.

5. Nov 27

   Conference participation

   24h Move

   +2.8%

   Participation in Piper Sandler healthcare conference fireside chat.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

transparency notification, voting rights, parent undertaking, controlling person

4 terms

transparency notification regulatory

"Nyxoah SA ... announces that it received a transparency notification as detailed below."

A transparency notification is a public alert required by market rules when a shareholder’s stake in a listed company rises above or falls below specified levels of ownership. It tells investors who is gaining or losing influence — like seeing someone start to buy or sell large slices of a cake — and matters because such moves can signal changes in control, voting power, potential alliances or takeover interest, which can affect share value and investor decisions.

voting rights financial

"BNP Paribas Asset Management Europe SAS holds 1,409,791 voting rights, representing 3.28%..."

Voting rights are the ability of shareholders to have a say in important company decisions, like choosing leaders or approving big changes. They matter because they give owners a voice in how the company is run, similar to how voters influence elections, ensuring the company acts in shareholders’ interests.

parent undertaking regulatory

"Reason for the notification: acquisition or disposal of voting securities or voting rightsNotification by: a parent undertaking or a controlling person"

A parent undertaking is a company that owns or controls one or more other companies, like the head of a household that calls the shots for smaller family members. Investors care because the parent’s decisions, financial health and liabilities often affect the smaller companies’ profits and risks, and its results are usually shown together in group financial reports, helping assess the true size and stability of an investment.

controlling person regulatory

"Notification by: a parent undertaking or a controlling person Person subject to the notification requirement..."

A controlling person is an individual or entity that can direct a company’s decisions and strategy through ownership, voting power, board control, or other influence — like the captain of a ship who sets course. For investors, who holds that control matters because it shapes management choices, risk tolerance, potential conflicts of interest, and the likelihood of major actions such as mergers, dividend changes, or management shifts.

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

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REGULATED INFORMATION

Publication relating to transparency notification

Mont-Saint-Guibert (Belgium), January 12, 2026, 7:00 am CET / 1:00 am ET – In accordance with article 14 of the Law of May 2, 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels/Nasdaq: NYXH) announces that it received a transparency notification as detailed below.

BNP Paribas Asset Management

On January 8, 2026, Nyxoah received a transparency notification from BNP Paribas Asset Management SA. Based on the notification, BNP Paribas Asset Management Europe SAS holds 1,409,791 voting rights, representing 3.28% of the total number of voting rights on December 31, 2025 (43,026,460).

The notification dated January 7, 2026 contains the following information:

• Reason for the notification: acquisition or disposal of voting securities or voting rights
• Notification by: a parent undertaking or a controlling person
• Person subject to the notification requirement: BNP Paribas Asset Management SA (with address at SA 47000-75318 Paris cedex 09-France)
• Date on which the threshold was crossed: December 31, 2025
• Threshold that is crossed: 3%
• Denominator: 43,026,460
• Notified details:
  
  

A) Voting rights	Previous notification	After the transaction
	# of voting rights	# of voting rights		% of voting rights
Holders of voting rights		Linked to securities	Not linked to the securities	Linked to securities	Not linked to the securities
BNP Paribas Asset Management Holding	0	0		0.00%
BNP Paribas Asset Management Europe SAS	696,562	1,409,791		3.28%
Subtotal	696,562	1,409,791		3.28%
	TOTAL	1,409,791	0	3.28%	0.00%

• Full chain of controlled undertakings through which the holding is effectively held: The subsidiary BNP Paribas Asset Management Europe SAS is controlled by the parent company BNP Paribas Asset Management Holding. This parent company is itself controlled by the parent company BNP Paribas SA, which benefits from an exemption from aggregating its shareholdings with those of its subsidiaries investment companies, in accordance with article 21, paragraph 2 of the Royal Decree of February 14, 2008 on the disclosure of major shareholdings.
  • Additional information: The subsidiary BNP Paribas Asset Management Europe SAS is an investment company that exercises voting rights on a discretionary basis in the absence of specific instructions. Following the merger between BNP Paribas Asset Management Europe SAS and AXA Investment Managers SA on December 31, 2025, the combined positions of the two entities resulted in the crossing of the 3% threshold.

*

* *

Contact:
Nyxoah
John Landry, CFO
IR@nyxoah.com

Attachment

• 2026 01 12 PR Transparency notification (BNP Paribas) (ENG)

FAQ

What stake did BNP Paribas Asset Management report in Nyxoah (NYXH) on January 8, 2026?

BNP Paribas Asset Management Europe SAS reported 1,409,791 voting rights, equal to 3.28% of Nyxoah's voting rights as of December 31, 2025.

Why did BNP Paribas Asset Management cross the 3% threshold in Nyxoah (NYXH)?

The 3% threshold was crossed after the December 31, 2025 merger between BNP Paribas Asset Management Europe SAS and AXA Investment Managers SA, which combined positions.

What is the voting rights denominator used for the Nyxoah (NYXH) notification?

The notification uses a denominator of 43,026,460 total voting rights on December 31, 2025.

Does BNP Paribas SA aggregate the shareholdings of its subsidiaries for the Nyxoah (NYXH) notification?

BNP Paribas SA benefits from an exemption under the Royal Decree, so it does not aggregate its subsidiaries' shareholdings in this disclosure.

When was the Nyxoah transparency notification published and where is the company listed?

The notification was published on January 12, 2026; Nyxoah is listed on Euronext Brussels and Nasdaq (NYXH).