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    SEC Form 3 filed by new insider Stamler David Allen

    4/15/26 7:49:37 PM ET
    $ATHE
    Biotechnology: Pharmaceutical Preparations
    Health Care
    Get the next $ATHE alert in real time by email
    SEC FORM 3SEC Form 3
    FORM 3UNITED 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
    OMB APPROVAL
    OMB Number:3235-0104
    Estimated average burden
    hours per response:0.5
    1. Name and Address of Reporting Person*
    Stamler David Allen

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

    (Street)
    NEWARK CALIFORNIA 94560

    (City)(State)(Zip)

    UNITED STATES

    (Country)
    2. Date of Event Requiring Statement (Month/Day/Year)
    04/15/2026
    3. Issuer Name and Ticker or Trading Symbol
    ALTERITY THERAPEUTICS LTD [ ATHE ]
    3a. Foreign Trading Symbol
    [ATH.ASX]
    5. If Amendment, Date of Original Filed (Month/Day/Year)
    4. Relationship of Reporting Person(s) to Issuer
    (Check all applicable)
    XDirector10% Owner
    XOfficer (give title below)Other (specify below)
    Chief Executive Officer
    6. Individual or Joint/Group Filing (Check Applicable Line)
    XForm 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 shares11,688,312D
    American Depositary Shares (1:600 ordinary shares)139,258IHSBC 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 ExercisableExpiration DateTitleAmount or Number of Shares
    Listed option exp 26 Feb 202704/15/202602/26/2027Ordinary shares1,515,152$0.028D
    Listed option exp 31 August 202604/15/202608/31/2026Ordinary shares2,380,952$0.01D
    Unlisted option exp 21 March 202904/15/202603/21/2029Ordinary shares40,000,200$0.003D
    Unlisted option exp 8 August 203004/15/202608/08/2030Ordinary shares290,400,000$0.0086D
    Explanation of Responses:
    David Allen Stamler04/15/2026
    ** Signature of Reporting PersonDate
    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 5 (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.
    * Form 3: SEC 1473 (03-26)
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