# EDGAR Filing Document

**Accession Number:** 0001815620
**File Stem:** 0001193125-25-191693
**Filing Date:** 2025-8
**Character Count:** 2635
**Document Hash:** 4a0b9148d3aee309e887116b2dbeb964
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-191693.hdr.sgml**: 20250829

**ACCESSION NUMBER**: 0001193125-25-191693

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250829

**FILED AS OF DATE**: 20250829

**DATE AS OF CHANGE**: 20250829

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Opthea Ltd
- **CENTRAL INDEX KEY:** 0001815620
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** C3
- **FISCAL YEAR END:** 0630

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39621
- **FILM NUMBER:** 251275768

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** LEVEL 4
- **STREET 2:** 650 CHAPEL STREET
- **CITY:** SOUTH YARRA
- **NON US STATE TERRITORY:** VICTORIA
- **PROVINCE COUNTRY:** C3
- **ZIP:** 3141
- **BUSINESS PHONE:** 61 3 9826 0399

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** LEVEL 4
- **STREET 2:** 650 CHAPEL STREET
- **CITY:** SOUTH YARRA
- **NON US STATE TERRITORY:** VICTORIA
- **PROVINCE COUNTRY:** C3
- **ZIP:** 3141

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

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**FORM 6-K** 

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**REPORT OF FOREIGN ISSUER** 

**PURSUANT TO RULE 13a-16 OR 15d-16** 

**OF THE SECURITIES EXCHANGE ACT OF 1934** 

**For the month of August 2025** 

**Commission File No. 001-39621** 

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**OPTHEA LIMITED**

**(Translation of registrant's name into English)** 

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**Level 4**

**650 Chapel Street**

**South Yarra, Victoria, 3141**

**Australia**

**(Address of registrant's principal executive office)** 

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Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

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**EXHIBIT INDEX** 

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| | |
|:---|:---|
| **Exhibit** | **Description** |
| 99.1 | [**<u>Appendix 4E Preliminary Final Report</u>**](opt-ex99_1.pdf) |

---

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**<u>SIGNATURES</u>** 

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, thereto duly authorized.

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| | |
|:---|:---|
| **OPTHEA LIMITED** | **OPTHEA LIMITED** |
| (Registrant) | (Registrant) |
| By: | /s/ Frederic Guerard |
| Name: | Frederic Guerard |
| Title: | Chief Executive Officer  |

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Date: 8/29/2025

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### Attached PDF Documents

**Attachment 1:** `opt-ex99_1.pdf`

_No text found in this document._