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CKDXF on OTC

OPTHEA LIMITED

OPTHEA LIMITED is an Australian public company.1 It is headquartered in Melbourne, Australia.1 Its shares trade on OTC under the symbol CKDXF.1

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Last updated Oct 21, 2026.

Overview

$25.0KRevenue, fiscal 20254
-$162.8MNet income, fiscal 20254

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  • TickerCKDXF on OTC1
  • IndustryBiological Products, (No Diagnostic Substances)1
  • HeadquartersMelbourne, Australia1
  • Legal formpublic company limited by shares1
  • Incorporated inAustralia5
  • Business addressLevel 4, 650 Chapel Street, South Yarra, 31415
  • Filer categoryNon-accelerated filer, Emerging growth company5
  • LEI549300Q5FMFDLP46SF833
  • StatusActive3
  • LEI statusIssued and current3
  • Registered address'Prime Company Compliance' Level 9, 3000 Melbourne, Australia3
  • Registered withThe Australian Securities and Investment Commission, 006 340 5673

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We were incorporated under the laws of Australia in 1984 under the name Circadian Technologies Limited. In 1985, we completed an initial public offering of our ordinary shares and the listing of our ordinary shares on the Australian Securities Exchange, or the ASX. In December 2015, we changed the name of our company to Opthea Limited. In October 2020, we dual listed onto the NASDAQ. Our registered offices are located at C/- Prime Company Compliance, Level 9 505 Little Collins Street, Melbourne, VIC 3000, Australia. Our telephone number is +61 3 9826 0399. Our agent for service of process in the United States is Corporation Service Company, located at 1180 Avenue of the Americas, Suite 210, New York, NY 10036. Our website address is www.opthea.com. The reference to our website is an inactive textual reference only and information contained in, or that can be assessed through, our website…6 From its latest annual report

Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2025

-623048.0%Operating margin4
-651164.0%Net margin4
-80.0%Revenue growth, 20254
-$158.7MFree cash flow4

Where the money goes

Where each dollar of revenue went, fiscal 2025

  • Research and development70¢$126.8M
  • Interest26¢$46.5M
  • Income tax4¢$6.9M

Out of $25.0K in revenue.4 The company lost money this year.

Financial statements

Revenue789104$25.0K in 2025−78% since 2019
0$50.0K$100.0K$150.0K2019: $112.5K$112.5K20192020: $59.1K$59.1K2020−47%2021: $68.6K$68.6K2021+16%2022: $90.7K$90.7K2022+32%2023: $108.0K$108.0K2023+19%2024: $125.0K$125.0K2024+16%2025: $25.0K$25.0K2025−80%
Operating income104-$155.8M in 2025+61% since 2022
-$200.0M-$150.0M-$100.0M-$50.0M02022: -$96.5M-$96.5M20222023: -$150.0M-$150.0M2023+55%2024: -$191.8M-$191.8M2024+28%2025: -$155.8M-$155.8M2025−19%
Net income789104-$162.8M in 2025+989% since 2019
-$300.0M-$200.0M-$100.0M02019: -$15.0M-$15.0M20192020: -$11.1M-$11.1M2020−26%2021: -$45.3M-$45.3M2021+308%2022: -$92.8M-$92.8M2022+105%2023: -$142.5M-$142.5M2023+54%2024: -$220.2M-$220.2M2024+55%2025: -$162.8M-$162.8M2025−26%
Fiscal year20182019202020212022202320242025
Revenue$112.5K7$59.1K8$68.6K9$90.7K10$108.0K4$125.0K4$25.0K4
Research and development$81.4M10$128.8M4$176.3M4$126.8M4
Operating income-$96.5M10-$150.0M4-$191.8M4-$155.8M4
Interest$010$13.5M9$30.3M4$46.5M4
Income before tax-$99.1M10-$148.4M4-$229.7M4-$169.7M4
Income tax-$6.3M10-$5.9M4-$9.4M4-$6.9M4
Net income-$15.0M7-$11.1M8-$45.3M9-$92.8M10-$142.5M4-$220.2M4-$162.8M4
Earnings per share-$0.149-$0.2610-$0.324-$0.354-$0.134
Earnings per share (diluted)-$0.149-$0.2610-$0.324-$0.354-$0.134
Shares (weighted, basic)351.6M shares10442.6M shares4638.2M shares41.2B shares4
Shares (weighted, diluted)351.6M shares10442.6M shares4638.2M shares41.2B shares4

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Corporate structure

OPTHEA LIMITED sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of OPTHEA LIMITED

  • OPTHEA LIMITED Melbourne, Australia

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What OPTHEA LIMITED reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Property and equipment

ItemLatestA year beforeChange
Property and equipment, net$04 Jun 30, 2025$48.0K4 Jun 30, 2024−100.0%
Operating-lease assets (leased space)$04 Jun 30, 2025$84.0K4 Jun 30, 2024−100.0%

Investments

ItemLatestA year beforeChange
Cash and cash equivalents$48.4M4 Jun 30, 2025$172.5M4 Jun 30, 2024−71.9%

Timeline

  1. Apr 18, 1991Went public Listed on Australian Securities Exchange1
  2. Oct 17, 1984Founded OPTHEA LIMITED is founded3

Filings

159 filings to the SEC since October 2021: 6 annual reports, 9 large holders, 144 other. The latest 20:

  1. Jul 7, 2026SCHEDULE 13G/A EDGAR
  2. Nov 20, 202515F-12B EDGAR
  3. Nov 20, 20256-K EDGAR
  4. Nov 12, 20256-K EDGAR
  5. Nov 10, 2025S-8 POS EDGAR
  6. Nov 10, 202525 EDGAR
  7. Oct 31, 20256-K EDGAR
  8. Oct 30, 20256-K EDGAR
  9. Oct 27, 20256-K EDGAR
  10. Oct 10, 20256-K EDGAR
  11. Oct 6, 20256-K EDGAR
  12. Sep 15, 202520-F EDGAR
  13. Sep 15, 20256-K EDGAR
  14. Aug 29, 20256-K EDGAR
  15. Aug 20, 20256-K EDGAR
  16. Aug 19, 20256-K EDGAR
  17. Aug 19, 20256-K EDGAR
  18. Jun 2, 20256-K EDGAR
  19. Apr 10, 20256-K EDGAR
  20. Mar 31, 20256-K EDGAR

The 159 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

SEC filer profile

How OPTHEA LIMITED is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGAROpthea Ltd2
  • CIK0001815620
  • Filer statusNon-accelerated filer an emerging growth company; not a shell company6
  • Incorporated inC36
  • Fiscal year endsJune 302
  • Industry code (SIC)2836 Biological Products, (No Diagnostic Substances)2
  • SEC reviewing officeOffice of Life Sciences, Division of Corporation Finance2
  • Business addressLevel 4, 650 Chapel Street, South Yarra, Victoria 3141, Australia2
  • Phone61 3 9826 03992
  • Shares outstanding1,231,817,008 Ordinary Shares shares; 12,430,322 American Depository Shares shares as of Jun 30, 20256
  • AuditorDeloitte Touche Tohmatsu, Melbourne, Australia PCAOB ID 1070; no auditor attestation of internal control over financial reporting6
  • On EDGAR sinceJul 17, 20202
  • Filings204 in all: 6-K (160), SC 13G/A (9), 20-F (5), CORRESP (4), UPLOAD (3), EFFECT (2), F-1/A (2), SC 13G (2)2
    All 24 form types

    SEC STAFF LETTER (2), 15F-12B (1), 20-F/A (1), 25 (1), 424B3 (1), 424B4 (1), 8-A12B (1), CERT (1), DRS (1), DRS/A (1), DRSLTR (1), F-1 (1), F-3 (1), S-8 (1), S-8 POS (1), SCHEDULE 13G/A (1)

  • Latest filingsAnnual report (20-F) Sep 15, 2025

Securities registered for trading

ClassSymbolExchange
American Depositary Shares, each representing eight ordinary sharesOPTThe Nasdaq Global Select Market
Ordinary shares, no par valueThe Nasdaq Global Select Market

From the cover page of the 20-F filed Sep 15, 2025 (Section 12(b) of the Exchange Act).6

Sources

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