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

Alterity Therapeutics Limited (ASX: ATH) - Trading

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:

ATH's request for a trading halt is attached below

for the information of the market.

By email: melissa.kostopoulos@asx.com.au

Adviser, Listings Compliance (Melbourne) ASX Limited

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:

Please contact us should you have any questions.

For and on behalf of the Board of Alterity Therapeutics

Alterity Therapeutics Limited

Suite 4, Level 14, 350 Collins Street, Melbourne,

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