Publication relating to transparency notifications

Rhea-AI Summary

Nyxoah (NASDAQ/EBR: NYXH) received a transparency notification dated February 26, 2026, reporting that Robert Taub and related person BMI Estate now hold 4,360,800 voting rights (9.99%) of total voting rights (43,662,403) as of February 20, 2026.

The holding comprises 4,310,800 linked securities and 50,000 warrants exercisable through 2028. Ownership passes via BMI Estate and Robelga SRL with described usufruct and bare ownership arrangements.

Positive

• Holding reported: 4,360,800 voting rights (9.99%)
• Linked securities: 4,310,800 voting rights reported
• Warrants outstanding: 50,000 instruments through 2028

Negative

• Near-threshold position: passive cross of 10% threshold reported
• Concentration risk: single owner group holds 9.99% of votes

News Market Reaction – NYXH

-1.47% 2.2x vol

15 alerts

-1.47% News Effect

-10.6% Trough in 5 hr 26 min

-$3M Valuation Impact

$202.22M Market Cap

2.2x Rel. Volume

On the day this news was published, NYXH declined 1.47%, reflecting a mild negative market reaction. Argus tracked a trough of -10.6% from its starting point during tracking. Our momentum scanner triggered 15 alerts that day, indicating notable trading interest and price volatility. This price movement removed approximately $3M from the company's valuation, bringing the market cap to $202.22M at that time. Trading volume was elevated at 2.2x the daily average, suggesting increased selling activity.

Data tracked by StockTitan Argus on the day of publication.

Key Figures

Total voting rights held: 4,360,800 voting rights Voting rights in securities: 4,310,800 voting rights Equivalent financial instruments: 50,000 voting rights +5 more

8 metrics

Total voting rights held 4,360,800 voting rights Robert Taub and related persons, as of Feb 20, 2026

Voting rights in securities 4,310,800 voting rights Linked to securities held by Robert Taub group

Equivalent financial instruments 50,000 voting rights Warrants held by Robert Taub

Ownership percentage 9.99% of voting rights Share of total voting rights on denominator 43,662,403

Total voting rights denominator 43,662,403 voting rights Total number of voting rights as of Feb 20, 2026

Threshold crossed 10% threshold Passive crossing under Belgian transparency rules

Warrants 2027 25,000 warrants, expiration 08/06/2027 Robert Taub equivalent financial instruments

Warrants 2028 25,000 warrants, expiration 14/06/2028 Robert Taub equivalent financial instruments

Market Reality Check

Price: $3.30 Vol: Volume 132,546 vs. 20-day...

high vol

$3.30 Last Close

Volume Volume 132,546 vs. 20-day average 50,822 (relative volume 2.61). high

Technical Price $4.08, trading below 200-day MA at $5.91 and near the 52-week low of $4.1001.

Peers on Argus

NYXH gained 5.62% while peers were mixed: AVR up 5%, OSUR up 2.94%, INFU and KRM...

1 Up

NYXH gained 5.62% while peers were mixed: AVR up 5%, OSUR up 2.94%, INFU and KRMD down around 3%, STSS down 1.7%. Only one scanner peer (ZTEK) appeared, up ~2.02%, suggesting stock-specific dynamics rather than a sector-wide move.

Historical Context

5 past events · Latest: Feb 25 (Neutral)

Pattern 5 events

Date	Event	Sentiment	Move	Catalyst
Feb 25	Capital structure update	Neutral	+5.6%	Updated total share capital and voting-rights figures after new share issuance.
Feb 18	Commercial partnership	Positive	-4.5%	MoU to expand Genio therapy access and training in the Middle East.
Jan 21	Capacity expansion	Positive	+1.1%	Investment in new Belgian manufacturing facility to support global demand.
Jan 12	Prelim earnings/guidance	Positive	+3.0%	Strong Q4 and FY2025 revenue growth and Q1 2026 guidance update.
Jan 12	Transparency notification	Neutral	-0.4%	BNP Paribas Asset Management disclosed a 3.28% holding crossing the 3% threshold.

Pattern Detected

Recent positive and neutral news often saw modest price moves, with some divergences between news tone and reaction.

Recent Company History

Over the past months, Nyxoah reported several capital-structure and growth updates. On Feb 25, 2026, it published updated share and voting-rights figures, tied to 43,662,403 ordinary shares. Earlier, it signed a Middle East MoU to expand Genio access, and invested in a ~2,000 m² Belgian facility to support worldwide growth. Preliminary Q4/FY2025 results showed strong revenue growth. Prior transparency notifications, such as the BNP Paribas filing, mirror today’s focus on major shareholdings.

Market Pulse Summary

This announcement details a transparency notification under Belgian large-shareholding rules, confir...

Analysis

This announcement details a transparency notification under Belgian large-shareholding rules, confirming that Robert Taub and related entities held 4,360,800 voting rights, or 9.99% of the 43,662,403 total as of February 20, 2026, including 50,000 rights via warrants. It adds to recent disclosures on Nyxoah’s capital base and major holders.

Key Terms

transparency notification, voting rights, equivalent financial instruments, warrants, +2 more

6 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

"holds 4,360,800 voting rights, consisting of 4,310,800 voting rights linked..."

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.

equivalent financial instruments financial

"4,310,800 voting rights linked to securities and 50,000 equivalent financial instruments..."

Financial assets or contracts that provide the same or very similar economic exposure, risks, and returns as one another, such as two ways to gain the same market exposure through different products. For investors this matters because choosing between equivalents is often about cost, convenience, tax treatment or counterparty risk—like picking between two routes that get you to the same destination but differ in tolls, travel time and safety. Recognizing equivalents helps compare options and manage portfolio risk efficiently.

warrants financial

"Robert Taub | Warrants | 08/06/2027 | | 25,000 | 0.06% | cash"

Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.

usufruct regulatory

"Robert Taub has 100% usufruct and Robert Taub’s children have 100% bare ownership..."

Usufruct is a legal right that lets one party use and collect income from someone else’s asset—like collecting rent, crops or dividends—without owning it, while the underlying property remains with the owner. It matters to investors because it changes who gets cash flow, who can make decisions about the asset, and how the asset is valued or transferred; think of it as a long-term rental with the duty to keep the property intact.

bare ownership regulatory

"Robert Taub has 100% usufruct and Robert Taub’s children have 100% bare ownership..."

Bare ownership is the legal right to own an asset while someone else has the right to use it and collect any income from it for a period of time. Think of it like owning a house on paper while another person lives there and receives rent; you hold the title but not the practical benefits until their use ends. For investors, bare ownership affects current value, control, taxes, and future cash flow timing because the asset’s full economic benefit is delayed.

AI-generated analysis. Not financial advice.

REGULATED INFORMATION

Publication relating to transparency notifications

Mont-Saint-Guibert (Belgium), February 27, 2026, 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 a transparency notification as detailed below.

Robert Taub / BMI Estate

On February 26, 2026, Nyxoah received a transparency notification from Robert Taub and related person BMI Estate, following the passive crossing of a threshold. 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 9.99% of the total number of voting rights on February 20, 2026 (43,662,403).

The notification dated February 26, 2026 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: February 20, 2026
• Threshold that is crossed: 10%
• Denominator: 43,662,403
• 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		6.21%
BMI Estate	567,484	567,484		1.30%
Robelga SRL	1,030,806	1,030,806		2.36%
Subtotal	4,310,800	4,310,800		9.87%
	TOTAL	4,310,800	0	9.87%	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	0.11%

	TOTAL (A & B)			# of voting rights	% of voting rights
				4,360,800	9.99%

• 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.
  
  

*

* *

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

Attachment

• 2026 02 27 PR Transparency notification (Robert Taub) (ENG)

FAQ

What stake did Robert Taub disclose in Nyxoah (NYXH) on February 26, 2026?

Robert Taub and related BMI Estate disclosed 4,360,800 voting rights (9.99%) as of February 20, 2026. According to Nyxoah, the total denominator was 43,662,403 voting rights, comprised of 4,310,800 linked securities plus 50,000 warrants.

How many of the disclosed Nyxoah (NYXH) voting rights are linked to securities vs warrants?

4,310,800 voting rights are linked to securities and 50,000 come from warrants. According to Nyxoah, the warrants are cash-settled and expire in June 2027 and June 2028, representing 0.11% combined.

Did the Nyxoah (NYXH) notification cross a legal threshold on February 20, 2026?

The notification reports a passive crossing of the 10% threshold on February 20, 2026. According to Nyxoah, the reported position reached 9.99% of voting rights based on the stated denominator of 43,662,403.

Through which entities is the Nyxoah (NYXH) holding of Robert Taub structured?

The holding is held via BMI Estate and Robelga SRL, with Robelga SRL 100% owned by BMI Estate. According to Nyxoah, Robert Taub holds 100% usufruct while his children hold bare ownership of BMI Estate.

What is the investor impact of the Nyxoah (NYXH) transparency notification for shareholders?

The disclosure increases transparency about ownership concentration but does not change shares outstanding. According to Nyxoah, the notice simply reports 9.99% voting rights and related warrant exposures as of February 20, 2026.