Alterity director buys 47K shares, sheds options

A director-linked entity increased its indirect stake in ATHE ordinary shares while simultaneously disposing of an equal number of listed options.

Rhea-AI Filing Summary

ALTERITY THERAPEUTICS LTD (ATHE) director Peter Ashley Marks reported related transactions on August 31, 2026 through Lampam Pty Ltd. An entity associated with him bought 47,620 ordinary shares at $0.50 per share, bringing its indirect holdings to 191,340 ordinary shares, and disposed of 47,620 listed options with a $0.50 exercise price expiring August 31, 2026.

Insider Trade Summary

Net Buyer: 95,240 shares

Net Buy 2 txns

Insider Marks Peter Ashley

Role Director

Bought 95,240 shs ($48K)

Type	Security	Shares	Price	Value
Purchase	Listed option exp 31 Aug 2026	47,620	$0.50	$24K
Purchase	Ordinary shares	47,620	$0.50	$24K

Holdings After Transaction: Listed option exp 31 Aug 2026 — 0 contracts (Indirect, Lampam Pty Ltd); Ordinary shares — 191,340 shares (Indirect, Lampam Pty Ltd)

Key Figures

Ordinary shares purchased: 47,620 shares Purchase price per ordinary share: $0.50 per share Indirect ordinary share holdings after transaction: 191,340 shares +2 more

5 metrics

Ordinary shares purchased 47,620 shares Indirect purchase by Lampam Pty Ltd on August 31, 2026

Purchase price per ordinary share $0.50 per share Price paid for 47,620 ordinary shares on August 31, 2026

Indirect ordinary share holdings after transaction 191,340 shares Ordinary shares held indirectly through Lampam Pty Ltd after August 31, 2026

Listed options disposed 47,620 options Listed options tied to ordinary shares disposed on August 31, 2026

Listed option exercise price $0.50 per share Exercise price for listed options expiring August 31, 2026

FAQ

What insider trading activity did ATHE report for director Peter Ashley Marks?

On August 31, 2026, an entity associated with director Peter Ashley Marks bought 47,620 ATHE ordinary shares at $0.50 per share and disposed of 47,620 listed options with a $0.50 exercise price expiring August 31, 2026.

How many ATHE ordinary shares does the related entity hold after this Form 4?

Following the August 31, 2026 transactions, Lampam Pty Ltd, an entity associated with director Peter Ashley Marks, holds 191,340 ATHE ordinary shares indirectly.

What price was paid for the ATHE ordinary shares purchased on August 31, 2026?

The ordinary shares were purchased at a price of $0.50 per share on August 31, 2026, for a total of 47,620 shares acquired indirectly through Lampam Pty Ltd.

What happened to the listed options reported in this ATHE Form 4?

An entity associated with the director disposed of 47,620 listed options with a $0.50 exercise price and an expiration date of August 31, 2026, leaving no such options reported as held after the transaction.

Were the ATHE insider transactions made under a Rule 10b5-1 trading plan?

The filing indicates that no Rule 10b5-1 trading plan is reported for these August 31, 2026 transactions by the entity associated with director Peter Ashley Marks.

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Available on EDGAR 09/08/2026 - 07:02 PM Accepted by SEC EDGAR 09/08/2026 - 07:01 PM Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Marks Peter Ashley

(Last) (First) (Middle)

LEVEL 15

500 COLLINS STREET

(Street)

MELBOURNE VICTORIA 3000

(City) (State) (Zip)

AUSTRALIA

(Country)

2. Issuer Name and Ticker or Trading Symbol
ALTERITY THERAPEUTICS LTD [ ATHE ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol
[ATH.ASX]

3. Date of Earliest Transaction (Month/Day/Year)
08/31/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary shares	08/31/2026	08/31/2026	P		47,620	A	$0.5	191,340	I	Lampam Pty Ltd

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Listed option exp 31 Aug 2026	$0.5	08/31/2026	08/31/2026	P			47,620	04/15/2026	08/31/2026	Ordinary shares	47,620	$0.5	0	I	Lampam Pty Ltd

Explanation of Responses:

	Peter Ashley Marks	09/08/2026
	** 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.
* Form 4: SEC 1474 (03-26)