AIGH entities and Orin Hirschman report 14.5% stake in NYXOAH (NASDAQ: NYXH)

Rhea-AI Filing Summary

NYXOAH Schedules beneficial ownership disclosure: AIGH entities and Orin Hirschman report 14,534,880 shares, representing 14.5% of Common Stock. The filing states sole voting and dispositive power over 14,534,880 shares. The filing is jointly made by AIGH Capital Management LLC, AIGH Investment Partners LLC and Mr. Orin Hirschman and is signed with dates shown.

Insights

Regulatory Compliance Analyst

Joint Schedule 13G reports a 14.5% beneficial stake held with sole voting and dispositive power.

The filing lists 14,534,880 shares of Common Stock (CUSIP B6S7WD106) and attributes sole voting and dispositive authority to the reporting persons. The disclosure names AIGH Capital Management LLC, AIGH Investment Partners LLC and Orin Hirschman as reporting persons, with a Baltimore address provided.

Because this is a passive-investor Schedule 13G style disclosure, the filing is a regulatory ownership snapshot; subsequent filings could update holdings if circumstances change.

Key Figures

Beneficial ownership: 14,534,880 shares Percent of class: 14.5% Sole voting power: 14,534,880 shares +3 more

6 metrics

Beneficial ownership 14,534,880 shares Amount beneficially owned as stated in Item 4(a)

Percent of class 14.5% Percent of Common Stock as stated in Item 4(b)

Sole voting power 14,534,880 shares Sole power to vote as stated in Item 4(c)(i)

Sole dispositive power 14,534,880 shares Sole power to dispose as stated in Item 4(c)(iii)

CUSIP B6S7WD106 CUSIP Number reported in Item 2(d)/(e)

Filing signature date 06/22/2026 Signature date shown under Signed section

Key Terms

Schedule 13G, Beneficially owned, Sole dispositive power, CUSIP

4 terms

Schedule 13G regulatory

"This is being jointly filed by each of the following persons pursuant to Rule 13d-1"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Beneficially owned regulatory

"Item 4. | Ownership (a) | Amount beneficially owned: 14,534,880"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole dispositive power regulatory

"(iii) Sole power to dispose or to direct the disposition of: 14,534,880"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

CUSIP financial

"CUSIP Number(s): B6S7WD106"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

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

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Available on EDGAR 06/22/2026 - 06:17 AM Accepted by SEC EDGAR 06/22/2026 - 06:16 AM Learn about SEC filing dates

FAQ

Who filed the Schedule 13G for NYXOAH (NYXH)?

The Schedule 13G was jointly filed by AIGH Capital Management LLC, AIGH Investment Partners LLC and Orin Hirschman. It states the reporting persons collectively hold 14,534,880 shares of Common Stock registered under CUSIP B6S7WD106.

How large is the disclosed stake in NYXOAH (NYXH)?

The filing discloses ownership of 14,534,880 shares, equal to 14.5% of the Common Stock. The filing also reports sole voting and sole dispositive power over the same 14,534,880 shares.

What voting or dispositive powers are reported in the filing?

The Schedule 13G states the reporting persons have sole voting power of 14,534,880 shares and sole dispositive power of 14,534,880 shares. Shared voting and dispositive powers are reported as 0.

What identifying details appear in the NYXOAH filing?

The disclosure lists CUSIP B6S7WD106, the issuer address at Rue Edouard Belin 12, Mont-Saint-Guibert, and the reporting persons' principal business address at 6006 Berkeley Avenue, Baltimore MD. The filing is signed and dated in June 2026.

Does the Schedule 13G indicate active trading or a change in ownership method?

The Schedule 13G presents a beneficial ownership snapshot and does not describe trading activity or method. It lists current beneficial ownership and powers; no transaction details or sale/purchase actions are included in the provided excerpt.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

NYXOAH SA

(Name of Issuer)

Common Stock

(Title of Class of Securities)

B6S7WD106

(CUSIP Number)

06/10/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): B6S7WD106

1

Names of Reporting Persons

Orin Hirschman

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 14,534,880.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 14,534,880.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

14,534,880.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

14.5 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

CUSIP Number(s): B6S7WD106

1

Names of Reporting Persons

AIGH Capital Management LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 14,534,880.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 14,534,880.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

14,534,880.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

14.5 %

12

Type of Reporting Person (See Instructions)

IA, OO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: NYXOAH SA
(b)	Address of issuer's principal executive offices: Rue Edouard Belin 12, Mont-Saint-Guibert, C9, 1435.
Item 2.
(a)	Name of person filing: This Schedule 13G is being jointly filed by each of the following persons pursuant to Rule 13d-1 promulgated by the Securities and Exchange Commission pursuant to Section 13 of the Securities Exchange Act of 1934, as amended (the "Act"): (i) AIGH Capital Management, LLC, a Maryland limited liability company ("AIGH CM"), as an Advisor or Sub-Advisor with respect to shares of Common Stock (as defined in Item 2(d) below) held by AIGH Investment Partners, L.P., and WVP Emerging Manger Onshore Fund, LLC - AIGH Series. (ii) AIGH Investment Partners, L.L.C., a Delaware limited liability company ("AIGH LLC";), with respect to shares of Common Stock (as defined in Item 2(d) below) directly held by it; (iii) Mr. Orin Hirschman ("Mr. Hirschman"), who is the Managing Member of AIGH Capital Management, LLC and president of AIGH LLC, with respect to shares of Common Stock (as defined in Item 2(d) below) indirectly held through AIGH CM, directly by AIGH LLC and Mr. Hirschman and his family directly. AIGH Capital Management LLC., AIGH Investment Partners LLC, and Mr. Hirschman are hereinafter sometimes collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party.
(b)	Address or principal business office or, if none, residence: The principal office and business address of AIGH Capital Management LLC, AIGH Investment Partners LLC, and Mr.Hirschman is: 6006 Berkeley Avenue, Baltimore MD 21209
(c)	Citizenship: See Item 2(a) above and Item 4 of each cover page.
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): B6S7WD106
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 14,534,880
(b)	Percent of class: 14.5 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 14,534,880
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 14,534,880
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

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.

Orin Hirschman

Signature:	/s/ Orin Hirschman
Name/Title:	Orin Hirschman
Date:	06/22/2026

AIGH Capital Management LLC

Signature:	/s/ Orin Hirschman
Name/Title:	Orin Hirschman, Managing Member
Date:	06/22/2026