| Item 1. | |
| (a) | Name of issuer:
Tenax Therapeutics, Inc. |
| (b) | Address of issuer's principal executive offices:
101 Glen Lennox Drive, Suite 300, Chapel Hill, North Carolina 27517, USA |
| Item 2. | |
| (a) | Name of person filing:
ING Groep, N.V.
ING Capital Markets LLC |
| (b) | Address or principal business office or, if none, residence:
ING Groep N.V.
PO Box 1800
Amsterdam, P7
1000 BV Amsterdam
ING Capital Markets LLC
1133 Avenue of the Americas
New York, NY 10036
USA |
| (c) | Citizenship:
ING Groep N.V. - The Netherlands
ING Capital Markets LLC - Delaware |
| (d) | Title of class of securities:
Common Stock, $0.0001 par value per share |
| (e) | CUSIP No.:
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| 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);
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| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
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| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
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| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
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| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
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| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
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| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
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| (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);
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| (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:
As of September 11, 2026, none of the Reporting Persons beneficially owned any Common Stock. |
| (b) | Percent of class:
As of September 11, 2026, none of the Reporting Persons beneficially owned any percentage of the Common Stock issued and outstanding as of July 28, 2026, as reported in the issuer's Quarterly Report on Form 10-Q for the period ended in June 30, 2026, filed with the Securities and Exchange Commission on July 31, 2026. |
| (c) | Number of shares as to which the person has:
|
| | (i) Sole power to vote or to direct the vote:
0
|
| | (ii) Shared power to vote or to direct the vote:
0
|
| | (iii) Sole power to dispose or to direct the disposition of:
0
|
| | (iv) Shared power to dispose or to direct the disposition of:
0
|
| Item 5. | Ownership of 5 Percent or Less of a Class. |
| | 
Ownership of 5 percent or less of a class
|
| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. |
| |
Not Applicable
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| 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
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| Item 8. | Identification and Classification of Members of the Group. |
| |
Not Applicable
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| Item 9. | Notice of Dissolution of Group. |
| |
Not Applicable
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