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Related Party Disclosures (Tables)

12 Months Ended

Jun. 30, 2025

Related party transactions [abstract]

Summary of Consolidated Financial Statements Include Financial Statements of Opthea Limited and Subsidiaries

The consolidated financial statements include the financial statements of Opthea Limited and its subsidiaries in the following table:


		Parent entity % equity interest
		June 30, 2025		June 30, 2024				June 30, 2023
				%				%
Vegenics Pty Ltd1		100			100				100
Opthea US Inc2		100			100				100

(1) Opthea Limited is the ultimate parent entity. Vegenics Pty Ltd is incorporated in Australia and has the same financial year as Opthea Limited.

(2) Opthea Limited is the ultimate parent entity. Opthea US Inc was incorporated in the United States in May 2021 and has the same financial year as Opthea Limited.

Summary of Trading Transactions with Related Parties

During the year, group entities entered into the following transactions with related parties who are not members of the Group.


		Consolidated
		Purchase of Service
		2025				2024				2023
		US$(000's)				US$(000's)				US$(000's)
Ocelot			32,793				24,699				—
Launch Tx			9,900				2,700				900
Mr Lawrence Gozlan			275				—				—
Saama Technologies			121				343				—

Transaction with Launch Tx relate to the popinion of the Directors, these duties are outside the scope of the ordinary duties of a Non-Executive Director.


		Consolidated
		Amounts owed to related parties
		2025				2024				2023
		US$(000's)				US$(000's)				US$(000's)
Ocelot			—				141,554				85,660
Launch Tx			2,250				—				900
Lawrence Gozlan			—				—				—
Saama Technologies			—				—				—


		Consolidated
		Amounts owed by related parties*
		2025				2024				2023
		US$(000's)				US$(000's)				US$(000's)
Ocelot			—				—				—
Launch Tx			—				3,150				—
Mr. Lawrence Gozlan			—				—				—
Saama Technologies			—				24				—