Alterity Therapeutics (NASDAQ: ATHE) reports expiry of 91M options

Rhea-AI Filing Summary

Alterity Therapeutics Limited reports that 91,392,720 unquoted options with ASX code ATHAAD, exercisable at $0.032 and expiring on 6 January 2026, have lapsed without being exercised or converted. No consideration was paid in connection with this expiry.

Following this change, the company’s issued capital on ASX comprises 10,875,416,329 ordinary fully paid shares (ATH), along with quoted options ATHO (option expiring 31 August 2026) totaling 931,232,089 and ATHOA (option expiring 26 February 2027) totaling 1,222,300,911. Various classes of unquoted options remain on issue, while the ATHAAD class now has zero securities outstanding.

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Form 6-K: How Foreign Companies Report to the SEC →

Accepted by SEC EDGAR 01/07/2026 - 07:59 AM Learn about SEC filing dates

FAQ

What did Alterity Therapeutics (ATHE) disclose in this Form 6-K?

Alterity Therapeutics disclosed that a series of unquoted options with ASX code ATHAAD, expiring on 6 January 2026 with a $0.032 exercise price, have ceased due to expiry without exercise or conversion, and updated its issued capital figures.

How many Alterity Therapeutics ATHAAD options expired?

A total of 91,392,720 unquoted ATHAAD options, expiring on 6 January 2026 with an exercise price of $0.032, have expired without being exercised or converted.

Did Alterity Therapeutics pay any consideration for the cessation of these options?

No. The disclosure states that the entity is not paying any consideration for the cessation of the 91,392,720 ATHAAD options.

What is Alterity Therapeutics’ ordinary share capital after the option expiry?

After the ATHAAD option expiry, Alterity Therapeutics has 10,875,416,329 ordinary fully paid shares on issue under ASX code ATH.

What other quoted options does Alterity Therapeutics have on issue?

The company has quoted options including ATHO (option expiring 31 August 2026) with 931,232,089 on issue and ATHOA (option expiring 26 February 2027) with 1,222,300,911 on issue.

Does Alterity Therapeutics still have any ATHAAD options outstanding?

No. Following the reported expiry, the ATHAAD option class now has zero securities on issue.

What unquoted options remain outstanding for Alterity Therapeutics?

Unquoted options on issue include various series such as ATHAAE (10,000,000), ATHAAG (11,500,000), ATHAE (11,500,000), ATHAF (312,400,200), ATHAD (15,000,000), ATHAAK (170,000,000), ATHAAH (8,000,000), ATHAB (62,500,000), ATHAA (20,166,667), and ATHAC (40,000,200).

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 January 7, 2026

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 Notification of cessation 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/ Julian Babarczy
		Julian Babarczy
		Chairman

Date: January 7, 2026

2

Exhibit 99.1

Appendix 3H - Notification of cessation of securities

Announcement Summary

Entity name

ALTERITY THERAPEUTICS LIMITED

Announcement Type

New announcement

Date of this announcement

Wednesday January 07, 2026

Details of +securities that have ceased

ASX +security code		Security description		Number of +securities that have ceased		The +securities have ceased due to		Date of cessation
ATHAAD		OPTION EXPIRING 06-JAN-2026 EX $0.032		91,392,720		Expiry of option or other convertible security without exercise or conversion		06/01/2026

Refer to next page for full details of the announcement

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

Appendix 3H - Notification of cessation of securities

Part 1 - Announcement Details

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

1.3 ASX issuer code

ATH

1.4 The announcement is

New announcement

1.5 Date of this announcement

7/1/2026

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

Appendix 3H - Notification of cessation of securities

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

ASX +Security Code and Description

ATHAAD : OPTION EXPIRING 06-JAN-2026 EX $0.032

Unquoted +equity securities that have ceased

Number of securities that have ceased

91,392,720

Reason for cessation

Expiry of option or other convertible security without exercise or conversion

	Date of cessation		Is the entity paying any consideration for the cessation?
	6/1/2026		No

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

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

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.

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

		Total number of
ASX +security code and description		+securities on issue
ATH : ORDINARY FULLY PAID			10,875,416,329
ATHO : OPTION EXPIRING 31-AUG-2026			931,232,089
ATHOA : OPTION EXPIRING 26-FEB-2027			1,222,300,911

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

		Total number of
ASX +security code and description			+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
ATHAE : OPTION EXPIRING 08-AUG-2030 EX $0.013			11,500,000
ATHAF : OPTION EXPIRING 08-AUG-2030 EX USD 0.0086			312,400,200
ATHAD : OPTION EXPIRING 01-JUL-2030 EX $0.01			15,000,000
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			0

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