# EDGAR Filing Document

**Accession Number:** 0001131343
**File Stem:** 0001213900-25-084256
**Filing Date:** 2025-9
**Character Count:** 5396
**Document Hash:** 22eff3e000deb969cfa88987448d86d3
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-084256.hdr.sgml**: 20250904

**ACCESSION NUMBER**: 0001213900-25-084256

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20250904

**FILED AS OF DATE**: 20250904

**DATE AS OF CHANGE**: 20250904

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ALTERITY THERAPEUTICS LTD
- **CENTRAL INDEX KEY:** 0001131343
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** C3
- **FISCAL YEAR END:** 0630

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-49843
- **FILM NUMBER:** 251291843

**BUSINESS ADDRESS:**
- **STREET 1:** LEVEL 3, 460 BOURKE STREET
- **CITY:** MELBOURNE
- **STATE:** C3
- **ZIP:** VIC 3000
- **BUSINESS PHONE:** 61 3 9349 4906

**MAIL ADDRESS:**
- **STREET 1:** LEVEL 3, 460 BOURKE STREET
- **CITY:** MELBOURNE
- **STATE:** C3
- **ZIP:** VIC 3000

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PRANA BIOTECHNOLOGY LTD
- **DATE OF NAME CHANGE:** 20010105

**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](http://www.sec.gov/Archives/edgar/data/1131343/000121390020040485/ea130838-s8_alteritytherape.htm), [333-248980](http://www.sec.gov/Archives/edgar/data/1131343/000121390020027969/ea127207-s8_alteritytherap.htm) and [333-228671](http://www.sec.gov/Archives/edgar/data/1131343/000114420418063081/tv508429_s-8.htm)) and our Registration Statements on Form F-3 (Files No. [333-274816](http://www.sec.gov/Archives/edgar/data/1131343/000101376223000033/ea185947-f3_alteritytherape.htm), [333-251647](http://www.sec.gov/Archives/edgar/data/1131343/000121390020044324/ea132148-f3_alteritytherape.htm), [333-231417](http://www.sec.gov/Archives/edgar/data/1131343/000114420419025615/tv521271_f3.htm) and [333-250076](http://www.sec.gov/Archives/edgar/data/1131343/000121390020036934/ea129831-f3_alteritytherap.htm))**

**ALTERITY THERAPEUTICS LIMITED**

**(a development stage enterprise)**

The following exhibits are submitted:

99.1 [Trading Halt](ea025597301ex99-1_alterity.htm)

**<u>SIGNATURE</u>**

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

---

Date: September 4, 2025

## Exhibit 99.1

**Exhibit 99.1**

![](ex99-1_001.jpg)

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 |

---

![](ex99-1_002.jpg)

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:

&nbsp;&nbsp;&nbsp;&nbsp;1. the Company is seeking the trading halt pending an announcement
in relation to a capital raising;

&nbsp;&nbsp;&nbsp;&nbsp;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

&nbsp;&nbsp;&nbsp;&nbsp;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**