Alterity Therapeutics Ltd 6-K, filed Sep 4, 2025
Alterity Therapeutics Ltd (ATHE)
About this 6-K
Alterity Therapeutics Ltd filed this 6-K on September 4, 2025.
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 |
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 4, 2025
2
Exhibit 99.1

Market Announcement
4 September 2025
Alterity Therapeutics Limited (ASX: ATH) – Trading Halt
Trading in the securities of Alterity Therapeutics Limited (‘ATH’) will be halted at the request of ATH, pending the release of an announcement by ATH.
Unless ASX decides otherwise, the securities will remain in trading halt until the earlier of:
| ● | the commencement of normal trading on Monday, 8 September 2025; or |
| ● | the release of the announcement to the market. |
ATH’s request for a trading halt is attached below for the information of the market.
Issued by
ASX Compliance
| 4 September 2025 | Market Announcement 1/1 | |
| ASX Limited | ASX Customer Service Centre 131 279 | asx.com.au |

4 September 2025
By email: melissa.kostopoulos@asx.com.au
Melissa Kostopoulos
Adviser, Listings Compliance (Melbourne) ASX Limited
Dear Melissa
Request for a trading halt
Alterity Therapeutics Limited (ASX: ATH, NASDAQ: ATHE) (the Company), requests that the Company’s securities be placed into a trading halt with immediate effect.
For the purposes of Listing Rule 17.1, the Company provides the following information:
| 1. | the Company is seeking the trading halt pending an announcement in relation to a capital raising; |
| 2. | the Company requests that the trading halt continues until the earlier of it making an announcement regarding the capital raising or until the commencement of trading on Monday 8 September 2025; and |
| 3. | the Company is not aware of any reason why the trading halt should not be granted or of any other information necessary to inform the market about the trading halt. |
Please contact us should you have any questions.
Yours sincerely
| /s/ Abby Macnish Niven | |
| Abby Macnish Niven | |
| Company Secretary |
For and on behalf of the Board of Alterity Therapeutics Limited
Alterity Therapeutics Limited
Suite 4, Level 14, 350 Collins Street, Melbourne, VIC 3000 Australia
T: +61 (0)3 9349 4906 | www.alteritytherapeutics.com