Publication relating to transparency notifications

Rhea-AI Summary

Nyxoah (NASDAQ/Euronext: NYXH) received two transparency notifications from Robert Taub and related BMI Estate disclosing changes in voting rights on November 27 and December 2, 2025.

As of November 20, 2025 the holding totaled 4,290,800 voting rights (9.97%). As of December 1, 2025 the holding rose to 4,360,800 voting rights (10.14%), consisting of 4,310,800 linked securities and 50,000 warrants. The notifications identify controlled undertakings including Robelga SRL and describe ownership chains.

Positive

• Stake increased to 10.14% of voting rights on Dec 1, 2025
• Total voting rights held: 4,360,800, including 4,310,800 linked securities

Negative

• Holder concentration rose above 10% threshold, increasing influence risk
• Equivalent instruments equal 50,000 warrants (0.12%), potential future dilution

Insights

Shareholder disclosure analyst

Major shareholder Robert Taub increased control to just over 10.14%, crossing the 10% notification threshold.

Nyxoah received two transparency notifications showing that Robert Taub together with related person BMI Estate held 9.97% on 2025-11-20 and reported an increase to 10.14% as of 2025-12-01. The change reflects additional voting securities held through controlled undertakings, including an increase in Robelga SRL holdings.

The implication is procedural: crossing the 10% threshold triggers disclosure duties and signals a larger concentrated ownership stake in the company. Key dependencies include the exact nature of the acquired securities and whether further acquisitions or exercises of the listed warrants (totaling 50,000 voting rights) change influence. This raises governance considerations but does not, by itself, state any change in strategy or control.

Watch for follow-up notifications, any shareholder agreements, or filings that specify voting intentions or board changes. Relevant near-term dates to monitor are the notification dates 2025-11-27 and 2025-12-02, plus the warrant expiries on 08/06/2027 and 14/06/2028.

                

REGULATED INFORMATION

Publication relating to transparency notifications

Mont-Saint-Guibert (Belgium), December 2, 2025, 10:30 pm CET / 4:30 pm ET – In accordance with article 14 of the Act of 2 May 2007 on the disclosure of large shareholdings, Nyxoah SA (Euronext Brussels/Nasdaq: NYXH) announces that it received two transparency notifications as detailed below.

Robert Taub / BMI Estate

On November 27, 2025, Nyxoah received a transparency notification from Robert Taub and related person BMI Estate. Based on the notification, Robert Taub (together with his controlled undertakings) holds 4,290,800 voting rights, consisting of 4,240,800 voting rights linked to securities and 50,000 equivalent financial instruments, representing 9.97% of the total number of voting rights on November 20, 2025 (43,026,460).

The notification dated November 27, 2025 contains the following information:

• Reason for the notification: passive crossing of a threshold
• Notification by: a parent undertaking or a controlling person
• Persons subject to the notification requirement:
  • Robert Taub
  • BMI Estate (with address at Avenue des Croix de Guerre 149 / 13, 1120 Brussels)
• Date on which the threshold was crossed: November 20, 2025
• Threshold that is crossed: 10%
• 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
Robert Taub	2,121,470	2,712,510		6.30%
BMI Estate	0	567,484		1.32%
Robelga SRL	696,000	960,806		2,23%
Subtotal	2,817,470	4,240,800		9.86%
	TOTAL	4,240,800	0	9.86%	0.00%

B) Equivalent financial instruments	After the transaction
Holders of equivalent financial instruments	Type of financial instrument	Expiration date	Exercise period or date	# of voting rights that may be acquired if the instrument is exercised	% of voting rights	Settlement
Robert Taub	Warrants	08/06/2027		25,000	0.06%	cash
Robert Taub	Warrants	14/06/2028		25,000	0.06%	cash
	TOTAL			50,000	0.12%

	TOTAL (A & B)			# of voting rights	% of voting rights
				4,290,800	9.97%

• Full chain of controlled undertakings through which the holding is effectively held: Robelga SRL is 100% owned by BMI Estate (a partnership (société simple) without legal personality). Robert Taub has 100% usufruct and Robert Taub’s children have 100% bare ownership of BMI Estate.
  
  

Robert Taub / BMI Estate

On December 2, 2025, Nyxoah received a transparency notification from Robert Taub and related entity BMI Estate. Based on the notification, Robert Taub (together with his controlled undertakings) holds 4,360,800 voting rights, consisting of 4,310,800 voting rights linked to securities and 50,000 equivalent financial instruments, representing 10.14% of the total number of voting rights on December 1, 2025 (43,026,460).

The notification dated December 2, 2025 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
• Persons subject to the notification requirement:
  • Robert Taub
  • BMI Estate (with address at Avenue des Croix de Guerre 149 / 13, 1120 Brussels)
• Date on which the threshold was crossed: December 1, 2025
• Threshold that is crossed: 10%
• 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
Robert Taub	2,712,510	2,712,510		6.30%
BMI Estate	567,484	567,484		1.32%
Robelga SRL	960,806	1,030,806		2.40%
Subtotal	4,240,800	4,310,800		10.02%
	TOTAL	4,310,800	0	10.02%	0.00%

B) Equivalent financial instruments	After the transaction
Holders of equivalent financial instruments	Type of financial instrument	Expiration date	Exercise period or date	# of voting rights that may be acquired if the instrument is exercised	% of voting rights	Settlement
Robert Taub	Warrants	08/06/2027		25,000	0.06%	cash
Robert Taub	Warrants	14/06/2028		25,000	0.06%	cash
	TOTAL			50,000	0.12%

	TOTAL (A & B)			# of voting rights	% of voting rights
				4,360,800	10.14%

• Full chain of controlled undertakings through which the holding is effectively held: Robelga SRL is 100% owned by BMI Estate (a partnership (société simple) without legal personality). Robert Taub has 100% usufruct and Robert Taub’s children have 100% bare ownership of BMI Estate.
  
  

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

Attachment

• 2025 12 02 PR Transparency notification (Robert Taub) (ENG)

FAQ

What did Nyxoah (NYXH) report on December 2, 2025 about Robert Taub's stake?

Nyxoah reported Robert Taub and BMI Estate held 4,360,800 voting rights (10.14%) as of Dec 1, 2025.

When did Robert Taub cross the 10% voting-rights threshold in NYXH?

The threshold was crossed on Dec 1, 2025, per the transparency notification dated December 2, 2025.

How many voting rights and warrants does Robert Taub hold in NYXH?

He holds 4,310,800 linked securities and 50,000 warrants, totaling 4,360,800 voting rights.

What percentage of Nyxoah voting rights did Taub hold on November 20, 2025?

On November 20, 2025 his holding was 4,290,800 voting rights (9.97%).

Which controlled entity is part of Robert Taub's ownership chain for NYXH shares?

The chain includes Robelga SRL, fully owned by BMI Estate, with BMI Estate linked to Robert Taub.