# EDGAR Filing Document

**Accession Number:** 0001131343
**File Stem:** 0001213900-25-059226
**Filing Date:** 2025-6
**Character Count:** 9775
**Document Hash:** 6f32b79a9a8ab72680627185d963128d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-059226.hdr.sgml**: 20250630

**ACCESSION NUMBER**: 0001213900-25-059226

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 3

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250630

**DATE AS OF CHANGE**: 20250630

**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:** 251088693

**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 June 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 [Notification of cessation of securities - ATH](ea024748501ex99-1_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: June 30, 2025

## Exhibit 99.1

**Exhibit 99.1**

---

| | |
|:---|:---|
| ![](ex99-1_001.jpg) | Appendix 3H - Notification of cessation of securities |

---

**Announcement Summary**

**Entity name**

ALTERITY THERAPEUTICS LIMITED

**Announcement Type**

**New announcement**

**Date of this announcement**

Monday June 30, 2025

**Details of +securities that have ceased**

---

| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**ASX +security<br> code** | &nbsp;&nbsp;**Security description** | **Number of<br> +securities that<br> have ceased** | &nbsp;&nbsp;**The +securities have<br> ceased due to** | &nbsp;&nbsp;**Date of<br> cessation** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAAE | &nbsp;&nbsp;OPTION EXPIRING<br> 29-NOV-2026 EX $0.0375 | 4250000 | &nbsp;&nbsp;Lapse of conditional right to securities because the conditions have not been, or have become incapable of being, satisfied | &nbsp;&nbsp;30/06/2025 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAAG | &nbsp;&nbsp;OPTION EXPIRING<br> 29-NOV-2026 EX $0.0238 | 400000 | &nbsp;&nbsp;Lapse of conditional right to securities because the conditions have not been, or have become incapable of being, satisfied  | &nbsp;&nbsp;30/06/2025 |

---

Refer to next page for full details of the announcement

Appendix 3H - Notification of cessation of securities 1 / 4

---

| | |
|:---|:---|
| ![](ex99-1_001.jpg) | Appendix 3H - Notification of cessation of securities |

---

Part 1 - Announcement Details

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1.1 Name of +Entity**

ALTERITY THERAPEUTICS LIMITED

We (the entity named above) provide the following information about our issued capital.

---

| | |
|:---|:---|
| **1.2 Registered number type** | **Registration number** |
| ABN | 37080699065 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1.3 ASX issuer code**

ATH

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1.4 The announcement is**

New announcement

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1.5 Date of this announcement**

30/6/2025

Appendix 3H - Notification of cessation of securities 2 / 4

---

| | |
|:---|:---|
| ![](ex99-1_001.jpg) | Appendix 3H - Notification of cessation of securities |

---

Part 2 - Details of +equity securities or +debt securities that have ceased

**ASX +Security Code and Description**

ATHAAE : OPTION EXPIRING 29-NOV-2026 EX $0.0375

**Unquoted +equity securities that have ceased**

**Number of securities that have ceased**

4,250,000

**Reason for cessation**

Lapse of conditional right to securities because the conditions have not been, or have become incapable of being, satisfied

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Date of cessation** | **Is the entity paying any consideration for the cessation?** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30/6/2025 | No |

---

**Any other information the entity wishes to notify to ASX about the cessation?**

<u>Lapse due to employee resignation.</u>  

**ASX +Security Code and Description**

ATHAAG : OPTION EXPIRING 29-NOV-2026 EX $0.0238

**Unquoted +equity securities that have ceased**

**Number of securities that have ceased**

400,000

**Reason for cessation**

Lapse of conditional right to securities because the conditions have not been, or have become incapable of being, satisfied

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Date of cessation** | **Is the entity paying any consideration for the cessation?** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30/6/2025 | No |

---

**Any other information the entity wishes to notify to ASX about the cessation?**

<u>Lapse due to contractor cessation.</u>  

Appendix 3H - Notification of cessation of securities 3 / 4

---

| | |
|:---|:---|
| ![](ex99-1_001.jpg) | Appendix 3H - Notification of cessation of securities |

---

Part 3 - Issued capital following changes

**Following the cessation of the +securities the subject of this notification, the issued capital of the entity will comprise:**

The figures in parts 3.1 and 3.2 below are automatically generated and may not reflect the entity's current issued capital if other Appendix 2A, Appendix 3G or Appendix 3H forms are currently with ASX for processing.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**3.1 Quoted +equity securities and +debt securities (total number of each +class of +securities quoted on ASX)**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**ASX +security code and description** | **Total number of** <br> **+securities on issue** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATH : ORDINARY FULLY PAID | 9127370686 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHO : OPTION EXPIRING 31-AUG-2026 | 932611269 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHOA : OPTION EXPIRING 26-FEB-2027 | 1222300911 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**3.2 Unquoted +equity securities (total number of each +class of +equity securities issued but not quoted on ASX)**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**ASX +security code and description** | **Total number of<br> +securities on issue** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAAE : OPTION EXPIRING 29-NOV-2026 EX $0.0375 | 10000000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAAG : OPTION EXPIRING 29-NOV-2026 EX $0.0238 | 11500000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAAB : OPTION EXPIRING 17-SEP-2025 EX $0.09 | 35000000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAAK : OPTION EXPIRING 30-DEC-2027 EX $0.01 | 170000000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAAH : OPTION EXPIRING 19-DEC-2026 EX $0.0105 | 8000000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAB : OPTION EXPIRING 13-MAR-2029 EX US$0.0031 | 62500000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAA : OPTION EXPIRING 13-MAR-2029 EX $0.004 | 20166667 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAC : OPTION EXPIRING 21-MAR-2029 EX US$0.003 | 120000000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ATHAAD : OPTION EXPIRING 06-JAN-2026 EX $0.032 | 91392720 |

---

Note: the figures stated in the tables above are used to calculate the total market capitalisation of the entity published by ASX from time to time. The table will not include those classes of +securities that have ceased or lapsed in their entirety in ASX records before the announcement date described in Q1.5, even if the entity has advised ASX of a change to that class of +security in Part 2 of this form.

Appendix 3H - Notification of cessation of securities 4 / 4