Exhibit 99.3
Publication relating to transparency notifications
February 27, 2026
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 | After the transaction | ||||||||||||||||||
| notification | ||||||||||||||||||||
| # of voting rights | # of voting rights | % of voting rights | ||||||||||||||||||
| Linked to | Not linked to the | Linked to | Not linked to | |||||||||||||||||
| Holders of voting rights | securities | securities | securities | 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 | |||||||||||||||
| # of voting | ||||||||||||||||
| rights that may | ||||||||||||||||
| be acquired if | ||||||||||||||||
| Type of financial | the instrument | % of voting | ||||||||||||||
| Holders of equivalent financial instruments | instrument | Expiration date | is exercised | 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. |
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Contact:
Nyxoah
John Landry, CFO
IR@nyxoah.com
Attachment
| · | 2026 02 27 PR Transparency notification (Robert Taub) (ENG) |