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ATHE 6-K

Alterity Therapeutics Ltd (ATHE)

6-K 2025-09-23 For: 2025-09-23
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Added on April 09, 2026

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-163

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of September 2025

Alterity Therapeutics Limited

(Name of Registrant)

Level 14, 350 Collins Street, Melbourne, Victoria 3000 Australia

(Address of Principal Executive Office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

This Form 6-K is being incorporated by reference into our Registration Statement on Form S-8 (Files No. 333-251073, 333-248980 and 333-228671) and our Registration Statements on Form F-3 (Files No. 333-274816, 333-251647, 333-231417 and 333-250076)

ALTERITY THERAPEUTICS LIMITED

(a development stage enterprise)

The following exhibits are submitted:

99.1 Date of AGM and Closing Date for Director Nominations

1

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Alterity Therapeutics Limited
By: /s/ Geoffrey P. Kempler
Geoffrey P. Kempler
Chairman

Date: September 23, 2025

2

Exhibit 99.1

23 September 2025

ASX Announcement

DATE OF AGM AND CLOSING DATE FOR DIRECTOR NOMINATIONS

Alterity Therapeutics Limited (ASX:ATH, NASDAQ:ATHE) (Alterity or the Company) advises that, in accordance with ASX Listing Rule 3.13.1, its next Annual General Meeting (AGM) will be held at 11.00am (AEDT) on Friday 21 November 2025.

In addition, the closing date for the receipt of nominations from persons wishing to be considered for election as a director is Wednesday 1 October 2025. Any nominations must be received in writing no later than 5.00pm (AEST) on Wednesday 1 October 2025 at the Company’s registered office.

Shareholders will be advised of further details regarding the AGM in a separate Notice of Meeting, which will be provided to shareholders shortly. The Notice of Meeting will also be available on the ASX Company Announcements Platform and the Company’s website at www.alteritytherapeutics.com.

For further information, please contact:

/s/ Abby Macnish Niven
Abby Macnish Niven
CFO & Company Secretary

T: +61 3 9349 4906

E: [email protected]

Alterity Therapeutics Limited

Suite 4, Level 14, 350 Collins Street, Melbourne, VIC 3000 Australia

T: +61 (0)3 9349 4906 | www.alteritytherapeutics.com