Company: ATHE
Filing Date: 2025-07-31
Form Type: 6-K
Source: 0001213900-25-069557
Chunk: 0

Company: ALTERITY THERAPEUTICS LTD
Filing Date: 2025-07-31
Form: 6-K
Chunk 0
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<div align='center'>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 July 2025

Alterity Therapeutics Limited

(Name of Registrant)

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

(Address of Principal Executive Office)</div>

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

<div align='center'>Form 20-F ☒ Form 40-F ☐</div>

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

<div align='center'>ALTERITY THERAPEUTICS LIMITED

(a development stage enterprise)</div>

The following exhibits are submitted:

| 99.1 |     | Updated Corporate Presentation |

<div align='center'>1

SIGNATURE</div>

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: July 31, 2025

<div align='center'>2</div>