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6-K

Alterity Therapeutics Ltd (ATHE)

6-K 2025-07-17 For: 2025-07-17
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Added on April 09, 2026

SECURITIESAND EXCHANGE COMMISSION

Washington,D.C. 20549

FORM6-K

REPORTOF FOREIGN PRIVATE ISSUER

PURSUANTTO RULE 13a-16 OR 15d-163

UNDERTHE SECURITIES EXCHANGE ACT OF 1934


Forthe month of July 2025

AlterityTherapeutics Limited

(Name of Registrant)

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

(Address of Principal Executive Office)

Indicateby 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 ☐


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

ALTERITYTHERAPEUTICS LIMITED

(adevelopment stage enterprise)

The following exhibits are submitted:

99.1 Application for quotation of securities - ATH
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: July 17, 2025

2

Exhibit 99.1

Appendix<br> 2A - Application for quotation of securities

Announcement Summary

Entity name

ALTERITY THERAPEUTICS LIMITED

Announcement Type

New announcement

Date of this announcement

Thursday July 17, 2025

The +securities to be quoted are:

+Securities issued, transferred or re-classified as a result of options being exercised or other +convertible securities being converted

Total number of +securities to be quoted

ASX +security code Security description Number of +securities to be quoted Issue date
ATH ORDINARY<br> FULLY PAID 79,999,800 17/07/2025

Refer to next page for full details of the announcement

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Part 1 - Entity and announcement details

1.1Name of entity

ALTERITY THERAPEUTICS LIMITED

We (the entity named above) apply for +quotation of the following +securities and agree to the matters set out in Appendix 2A of the ASX Listing Rules.

1.2 Registered number type Registration number
ABN 37080699065

1.3ASX issuer code


ATH

1.4The announcement is


New announcement

1.5Date of this announcement


17/7/2025

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Part 2 - Type of Issue

2.1The +securities to be quoted are:

+Securities issued, transferred or re-classified as a result of options being exercised or other +convertible securities being converted

2.2 The +class of +securities to be quoted is:

Additional +securities in a class that is already quoted on ASX (“existing class”)

| Appendix 2A - Application for quotation of securities | 3 / 6 |

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Part 3B - number and type of +securities to be quoted (existing class) where issue has not previously been notified to ASX in an

Appendix 3B

Existing +securities converting into additional +securities in an existing class

FROM (Existing Class)

ASX +security code and description

ATHAC : OPTION EXPIRING 21-MAR-2029 EX US$0.003

TO (Existing Class)

ASX +security code and description


ATH : ORDINARY FULLY PAID

Please state the number of options that were exercised or other +convertible securities that were converted The first date the options were exercised or other +convertible securities were converted The last date the options were exercised or other +convertible securities were converted
79,999,800 17/7/2025

Is this all of the options or other +convertible securities on issue of that type (ie have all of those options now been exercised or have all of those convertible securities now been converted)?

No

Theright of the holder of the options or other +convertible securities to receive the +underlying securities is being satisfied by:


An issue of new +securities


Theunderlying +securities being received by the holder are:


Intended to be, but are not yet, quoted by ASX ****

Were the options being exercised or other +convertible securities being converted issued under an +employee incentive scheme?

Yes

Are any of the options being exercised or other +convertible securities being converted held by +key management personnel (KMP) or an +associate?

Yes

Provide details of the KMP or +associates who are exercising options or converting convertible securities

Name of KMP Name of registered holder Number of options being exercised or other +convertible securities being converted
David Stamler David Stamler 79,999,800

Issue date

17/7/2025

Will the +securities to be quoted rank equally in all respects from their issue date with the existing issued +securities in that class?

Yes

| Appendix 2A - Application for quotation of securities | 4 / 6 |

| --- | --- | | Appendix<br> 2A - Application for quotation of securities | | --- |

Issue details


Numberof +securities to be quoted


79,999,800

Arethe +securities being issued for a cash consideration?

Yes

In what currency is the cash consideration being paid? What is the issue price per +security?
USD - US Dollar USD 0.00300000

Anyother information the entity wishes to provide about the +securities to be quoted

| Appendix 2A - Application for quotation of securities | 5 / 6 |

| --- | --- | | Appendix<br> 2A - Application for quotation of securities | | --- |

Part 4 - Issued capital following quotation

Followingthe quotation of the +securities the subject of this application, the issued capital of the entity will comprise:

The figures in parts 4.1 and 4.2 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.

4.1Quoted +securities (total number of each +class of +securities quoted on ASX following the +quotation of the +securities subject of thisapplication)

ASX +security code and description Total<br> number of<br><br> +securities on issue
ATH : ORDINARY FULLY PAID 9,207,370,486
ATHO : OPTION EXPIRING 31-AUG-2026 932,611,269
ATHOA : OPTION EXPIRING 26-FEB-2027 1,222,300,911

4.2Unquoted +securities (total number of each +class of +securities issued but not quoted on ASX)

ASX +security code and description Total number of +securities on issue
ATHAAE : OPTION EXPIRING 29-NOV-2026 EX $0.0375 10,000,000
ATHAAG : OPTION EXPIRING 29-NOV-2026 EX $0.0238 11,500,000
ATHAD : OPTION EXPIRING 01-JUL-2030 EX $0.01 15,000,000
ATHAAB : OPTION EXPIRING 17-SEP-2025 EX $0.09 35,000,000
ATHAAK : OPTION EXPIRING 30-DEC-2027 EX $0.01 170,000,000
ATHAAH : OPTION EXPIRING 19-DEC-2026 EX $0.0105 8,000,000
ATHAB : OPTION EXPIRING 13-MAR-2029 EX US$0.0031 62,500,000
ATHAA : OPTION EXPIRING 13-MAR-2029 EX $0.004 20,166,667
ATHAC : OPTION EXPIRING 21-MAR-2029 EX US$0.003 40,000,200
ATHAAD : OPTION EXPIRING 06-JAN-2026 EX $0.032 91,392,720
| Appendix 2A - Application for quotation of securities | 6 / 6 |

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