FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person *
Stamler David Allen

(Last) (First) (Middle)
39899 BALENTINE DRIVE

(Street)
NEWARK CA 94560

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
04/15/2026
3. Issuer Name and Ticker or Trading Symbol
ALTERITY THERAPEUTICS LTD [ ATHE ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Executive Officer
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Ordinary shares 11,688,312
D
 
American Depositary Shares (1:600 ordinary shares) 139,258
I
HSBC Custody Nominees (Australia) Limited
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Listed option exp 26 Feb 2027 04/15/2026 02/26/2027 Ordinary shares 1,515,152 0.028 D  
Listed option exp 31 August 2026 04/15/2026 08/31/2026 Ordinary shares 2,380,952 0.01 D  
Unlisted option exp 21 March 2029 04/15/2026 03/21/2029 Ordinary shares 40,000,200 0.003 D  
Unlisted option exp 8 August 2030 04/15/2026 08/08/2030 Ordinary shares 290,400,000 0.0086 D  
Explanation of Responses:
David Allen Stamler 04/15/2026
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.