# EDGAR Filing Document

**Accession Number:** 0001949257
**File Stem:** 0001213900-25-119835
**Filing Date:** 2025-12
**Character Count:** 30494
**Document Hash:** ebd0aa35d0fc92401c9e6679d5fd9846
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-119835.hdr.sgml**: 20251210

**ACCESSION NUMBER**: 0001213900-25-119835

**CONFORMED SUBMISSION TYPE**: 20-F/A

**PUBLIC DOCUMENT COUNT**: 17

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20251210

**DATE AS OF CHANGE**: 20251210

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Radiopharm Theranostics Ltd
- **CENTRAL INDEX KEY:** 0001949257
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** C3
- **FISCAL YEAR END:** 0630

**FILING VALUES:**
- **FORM TYPE:** 20-F/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41621
- **FILM NUMBER:** 251560779

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** LEVEL 3, 62 LYGON STREET
- **CITY:** CARLTON VIC
- **PROVINCE COUNTRY:** C3
- **ZIP:** 3053
- **BUSINESS PHONE:** 61 3 9824 5254

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** LEVEL 3, 62 LYGON STREET
- **CITY:** CARLTON VIC
- **PROVINCE COUNTRY:** C3
- **ZIP:** 3053

?xml version='1.0' encoding='ASCII'?

**As filed with the Securities and Exchange Commission on December 10, 2025**

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**Form 20-F/A**

**(Amendment No. 1)**

**(Mark One)**

☐ **REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934**

**OR**

☒ **ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934** 

**For the fiscal year ended June 30, 2025**

**OR**

☐ **TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**OR**

☐ **SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**Date of event requiring this shell company report <u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u>**

**For the transition period from <u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u> to <u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u>**

**Commission file number 001-41621**

**RADIOPHARM THERANOSTICS LIMITED**

(Exact name of Registrant as specified in its charter)

**Not Applicable**

(Translation of Registrant's name into English)

**Australia**

(Jurisdiction of incorporation or organization)

**Level 3, 62 Lygon Street**

**Carlton VIC 3053 Australia**

(Address of principal executive offices)

**Riccardo Canevari, Chief Executive Officer**

**Level 3, 62 Lygon Street Carlton VIC 3053 Australia** 

**Phone: +61 3 9824 5254 E-mail: rc@radiopharmtheranostics.com**

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered, pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol(s)** | **Name of each exchange on which registered** |
| Ordinary Shares, as represented by American Depositary Shares | RADX | The Nasdaq Stock Market LLC |

---

Securities registered or to be registered pursuant to Section 12(g) of the Act: None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None

The number of ordinary shares outstanding as of June 30, 2025 was 2,364,949,502 ordinary shares.

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☒

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. Yes ☐ No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

☐ Large accelerated filer ☐ Accelerated filer ☒ Non-accelerated filer ☒ Emerging growth company

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

☐ U.S. GAAP ☒ International Financial Reporting Standards as issued by the International Accounting Standards Board ☐ Other

If "Other" has been checked in response to the previous question indicate by check mark which financial statement item the registrant has elected to follow. Item 17 ☐ Item 18 ☐

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

**EXPLANATORY NOTE**

This Amendment No. 1 to Form 20-F (the "Amendment") amends our annual report on Form 20-F for the year ended June 30, 2025 (the "Annual Report"), which was originally filed with the U.S. Securities and Exchange Commission on September 18, 2025. The purpose of this Amendment is (i) to amend Item 4 – B. Business Overview – Intellectual Property and Patent Portfolio by replacing such sections with the information presented below and (ii) to amend Item 6 – C. Board Practices by adding the information presented below.

This Amendment does not reflect events occurring after the filing of the Annual Report and does not modify or update the disclosure therein in any way except as described above or herein. No other changes have been made to the Annual Report. The filing of this Amendment should not be understood to mean that any statements contained in the Annual Report, as amended by this Amendment, are true or complete as of any date subsequent to the original filing date of the Annual Report. Accordingly, this Amendment should be read in conjunction with the Annual Report.

As required by Rule 12b-15 of the Securities and Exchange Act of 1934, as amended, the Company is also filing or furnishing the certifications required under Section 302 and Section 906 of the Sarbanes-Oxley Act of 2002 as exhibits to this Amendment.

Except for the matters described above, this Amendment does not modify or update any other disclosures in, or exhibits to, the Annual Report, and does not reflect any events occurring after the date of the Annual Report.

i

**Item 4. History and Development of the Company**

**B. Business Overview** 

**Intellectual Property**

We have implemented a patent acquisition and licensing strategy as we develop our products and therapies in conjunction with our scientific advisory board. Currently, we own, or have licensed rights under, 34 granted patents. A summary of the number of patents and patent applications, patent types and jurisdictions is listed in the table below. Once converted to the complete stage as a PCT application, the provisional patent applications will also be applicable to all PCT contracting states. Various patents have been granted. For earlier stage applications where a PCT application has been filed but no related patents have yet reached the grant stage, international search reports and written opinions of the International Search Authority or the International Preliminary Examining Authority have considered that the Patent Cooperation Treaty applications contain at least some claims which are novel and inventive over the cited prior art and which meet the requirements of industrial applicability. The preparation of the International Search Report (ISR) and International Search Opinion (ISO) for PCT applications is one of the main procedural steps of the international phase of the Patent Cooperation Treaty (PCT). The purpose of conducting the searches at the international phase is to identify the relevant prior art and for the International Searching Authority to establish a preliminary, non-binding opinion as to whether the search and examined claims are novel, involve an inventive step and are industrially applicable.

In addition to pursing patent protection for all of our assets, we rely on unpatented trade secrets, know-how and other confidential information as well as proprietary technological innovation and expertise that are protected in part by confidentiality and invention assignment agreements with our employees, advisors and consultants.

Patent matters in biotechnology are highly uncertain and involve complex legal and factual questions. The availability and breadth of claims allowed in biotechnology and pharmaceutical patents cannot be predicted. Statutory differences in patentable subject matter may limit the scope of protection we can obtain on some or all of our licensed inventions or prevent us from obtaining patent protection either of which could harm our business, financial condition and results of operations. Since patent applications are not typically published until at least 18 months from their first filing date and the publication of discoveries in the scientific literature often lags behind actual discoveries, we cannot be certain that we, or any of our licensors, were the first creator of inventions covered by pending patent applications, or that we or our licensors, were the first to file patent applications for such inventions. Additionally, the grant and enforceability of a patent is dependent on a number of factors that may vary between jurisdictions. These factors may include the novelty of the invention, the requirement that the invention not be obvious in the light of prior art (including prior use or publication of the invention), the utility of the invention and the extent to which the patent clearly describes the best method of working the invention. In short, this means that claims granted in various territories may vary and thereby influence commercial outcomes.

While we have acquired and licensed, and will continue to acquire or licence protection as appropriate for our therapeutic products and technologies, we cannot be certain that any future patent applications we file, or are licensed or assigned to us, will be granted, or that we will develop additional proprietary products or processes that are patentable or that we will be able to license any other patentable products or processes. We cannot be certain that others will not independently develop similar products or processes, duplicate any of the products or processes developed or being developed by the company or licensed or assigned to us, or design around the patents owned or licensed by us, or that any patents owned or licensed by us will provide us with competitive advantages.

Furthermore, we cannot be certain that patents held by third parties will not prevent the commercialization of products incorporating the technology developed by us or licensed or assigned to us, or that third parties will not challenge or seek to narrow, invalidate or circumvent any of the issued, pending or future patents owned or licensed by us.

Our commercial success will also depend, in part, on our ability to avoid infringement of patents issued to others. If a court determines that we were infringing any third-party patents, we could be required to pay damages, alter our products or processes, obtain licenses or cease certain activities. We cannot be certain that the licenses required under patents held by third parties would be made available on terms acceptable to us or at all. To the extent that we are unable to obtain such licenses, we could be foreclosed from the development, export, manufacture or commercialization of the product requiring such license or encounter delays in product introductions while we attempt to design around such patents, and any of these circumstances could have a material adverse effect on our business, financial condition and results of operations. We may have to resort to litigation to enforce any patents licensed or assigned to us or to determine the scope and validity of third-party proprietary rights. Such litigation could result in substantial costs and diversion of effort by us. We may have to participate in opposition proceedings before the Australian Patent and Trademark Office or another foreign patent office, or in interference proceedings declared by the United States Patent and Trademark Office, including to determine the priority of invention for patent applications filed by competitors. Any such litigation interference or opposition proceeding, regardless of outcome, could be expensive and time consuming, and adverse determinations in any such proceedings could prevent us from developing, manufacturing or commercializing our products and could have a material adverse effect on our business, financial condition and results of operations.

As of June 30, 2025, the Company also owns pending Australian trademark applications.

**Patent Portfolio**

The following table presents our portfolio of patents and patent applications, including their current status and title. We currently own, or have licensed rights under, 34 granted patents.

---

| | | |
|:---|:---|:---|
| **PATENT** | **DETAILS** | **EXPIRY** |
| **RAD PD-L1, HER-2, TROP-2, PTK7** | **RAD PD-L1, HER-2, TROP-2, PTK7** | **RAD PD-L1, HER-2, TROP-2, PTK7** |
| PCT/CN2017/077122 (PD-L1 - a)<br> (# patents 3)<br> CN201610158493.0 (PD-L1 - a)<br> PCT/CN2018/105524 (PD-L1 - b)<br> (# patents 4)<br> CN201710822409.5 (PD-L1 – b)<br> PCT/CN2018/091953 (HER-2) <br> (# patents 4)<br> PCT/CN2022/113106 (PTK7)<br> CN 202110950740.1 (PTK7) | **PD-L1- a Status:** Int. Publication 2017; Granted 2 x US (composition of matter), China (composition of matter, use, process); Pending Europe | **2036** (China)<br> **2037** (US, Europe) |
| PCT/CN2017/077122 (PD-L1 - a)<br> (# patents 3)<br> CN201610158493.0 (PD-L1 - a)<br> PCT/CN2018/105524 (PD-L1 - b)<br> (# patents 4)<br> CN201710822409.5 (PD-L1 – b)<br> PCT/CN2018/091953 (HER-2) <br> (# patents 4)<br> PCT/CN2022/113106 (PTK7)<br> CN 202110950740.1 (PTK7) | **PD-L1-b Status:** Int. Publication 2019; Granted China (composition of matter, use), US (composition of matter, use), Japan (composition of matter, use), Europe\*<br> (Composition of matter, use).<br> \* Validated in Austria, Belgium, Germany, Finland, Greece, Spain, France, UK, Ireland, Italy, Netherlands, Portugal, Sweden, Switzerland, Denmark and Norway. | **2037** (China)<br> **2038** (Europe, Japan)<br> **2039** (US) |
| PCT/CN2017/077122 (PD-L1 - a)<br> (# patents 3)<br> CN201610158493.0 (PD-L1 - a)<br> PCT/CN2018/105524 (PD-L1 - b)<br> (# patents 4)<br> CN201710822409.5 (PD-L1 – b)<br> PCT/CN2018/091953 (HER-2) <br> (# patents 4)<br> PCT/CN2022/113106 (PTK7)<br> CN 202110950740.1 (PTK7) | **HER-2 Status:** Int. Publication 2018; Granted China (composition of matter, use, process), Japan (composition of matter, use, process), US (composition of matter), US continuation (composition of matter, use); Pending Europe | **2038** |
| PCT/CN2017/077122 (PD-L1 - a)<br> (# patents 3)<br> CN201610158493.0 (PD-L1 - a)<br> PCT/CN2018/105524 (PD-L1 - b)<br> (# patents 4)<br> CN201710822409.5 (PD-L1 – b)<br> PCT/CN2018/091953 (HER-2) <br> (# patents 4)<br> PCT/CN2022/113106 (PTK7)<br> CN 202110950740.1 (PTK7) | **PTK7 Status**: Int. Publication 2023; Pending Australia, China, Europe, Japan, US, Hong Kong | **2041** (earliest) |
| **RAD αVβ6 Integrin** | **RAD αVβ6 Integrin** | **RAD αVβ6 Integrin** |
| EP20162699.1<br> PCT/EP2021/056424 <br> (# patents 1) | Status: Intl. Publication 2021; Granted China (composition of matter, use); Pending Australia, Japan, US, Hong Kong | **2041** |
| **RAD Pivalate** | **RAD Pivalate** | **RAD Pivalate** |
| EP2994169 <br> (# patents 1)<br> US10,821,194<br> (# patents 1)<br> US10,213,516<br> (# patents. 1) | **Status:** Granted Europe (composition of matter, use, process)<br>| **2034** |
| EP2994169 <br> (# patents 1)<br> US10,821,194<br> (# patents 1)<br> US10,213,516<br> (# patents. 1) | **Status:** Granted US (composition of matter, use)<br>| **2034** |
| EP2994169 <br> (# patents 1)<br> US10,821,194<br> (# patents 1)<br> US10,213,516<br> (# patents. 1) | **Status:** Granted US (composition of matter, use)<br>| **2035** |
| **RAD PSA-mAb** | **RAD PSA-mAb** | **RAD PSA-mAb** |
| PCT/EP2016/073684 PSA<br> (# patents 13)<br> PCT/US2012/061982 PSA mAb<br> (# patents 6) | **Status:** Int. Publication 2017; Granted US (use), Europe\* (composition of matter, use), Japan (composition of matter, use), Russia (composition of matter, use), Mexico (composition of matter, use), Hong Kong (composition of matter, use), South Africa (composition of matter, use), Israel (composition of matter, process, use), Australia (composition of matter, process, use), China (composition of matter, process, use), Republic of Korea (composition of matter, use), US continuation (composition of matter, use), Brazil (composition of matter, use); Pending Canada.<br> \* Validated in Austria, Belgium, Czech Republic, Germany, Finland, Denmark, Estonia, Greece, Italy, France, Ireland, Lithuania, Latvia, Netherlands, Switzerland, Norway, Portugal, Spain, UK, Poland, Sweden, Slovakia, Turkey | **2037** |
| PCT/EP2016/073684 PSA<br> (# patents 13)<br> PCT/US2012/061982 PSA mAb<br> (# patents 6) | **Status:** Int. Publication 2013; Granted Australia (use), China (use), Europe\* (use), Japan (use), Canada (use), US (use); Pending US continuation.<br> \* Validated in Germany, France, UK | **2032** |
| **B7-H3** | **B7-H3** | **B7-H3** |
| PCT/US2020/061050<br> PCT/US2024/013584 | **Status:** Pending Australia, Brazil, Canada, China, Europe, Hong Kong, Japan (allowed), Korea, US<br> **Status:** Pending Australia, Brazil, Canada, China, Japan, Europe, Korea, US | **2040**<br> **2044** |

---

**Item 6: Directors, Senior Management and Employees**

**C. Board Practices**

The Board meets to discuss business regularly throughout the year, with additional meetings being held when circumstances warrant. Included in the table below are details of the meetings of the Board and the sub-committees of the Board that were held during the fiscal year ending June 30, 2025.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Directors' meetings** | **Directors' meetings** | **Audit Committee<br> meetings** | **Audit Committee<br> meetings** | **Remuneration<br> Committee meetings** | **Remuneration<br> Committee meetings** |
|  | **Attended** | **Eligible** | **Attended** | **Eligible** | **Attended** | **Eligible** |
| Mr. Paul Hopper | 7 | 7 |  |  |  |  |
| Mr. Riccardo Canevari | 7 | 7 |  |  |  |  |
| Mr. Ian Turner | 7 | 7 | 3 | 3 |  |  |
| Ms. Hester Larkin | 6 | 7 | 3 | 3 | 3 | 3 |
| Dr. Leila Alland | 7 | 7 |  | 1 | 3 | 3 |
| Mr. Phillip Hains | 7 | 7 |  |  |  |  |
| Mr. Noel Donnelly | 5 | 5 | 2 | 2 | 1 | 1 |

---

 **Item 19. Exhibits**

---

| | |
|:---|:---|
| 12.1\* | [Certification of the Chief Executive Officer pursuant to rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to section 302 of the Sarbanes-Oxley Act of 2002.](ea026880201ex12-1_radio.htm) |
| 12.2\* | [Certification of the Chief Financial Officer pursuant to rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to section 302 of the Sarbanes-Oxley Act of 2002.](ea026880201ex12-2_radio.htm) |
| 13.1\* | [Certification of the Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002](ea026880201ex13-1_radio.htm) |
| 13.2\* | [Certification of the Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002](ea026880201ex13-2_radio.htm) |

---

\* Filed herewith.

**SIGNATURES**

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F/A and that it has duly caused and authorized the undersigned to sign this annual report on its behalf.

---

| | |
|:---|:---|
| **RADIOPHARM THERANOSTICS LIMITED** | **RADIOPHARM THERANOSTICS LIMITED** |
| Date: | December 10, 2025 |
| By: | /s/ Riccardo Canevari |
| Name: | Riccardo Canevari |
| Title: | Chief Executive Officer and Managing Director |

---

## Exhibit 12.1

**Exhibit 12.1**

**Certification pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act <br> of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002**

I, Riccardo Canevari, certify that:

1. I have reviewed this annual report on Form 20–F/A of Radiopharm Theranostics Limited (the "Company");

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this report;

4. The Company's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and have:

&nbsp;&nbsp;&nbsp;&nbsp;a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. [ *paragraph omitted in accordance with Exchange Act Rule 13a-14(a)* ];

c. Evaluated the effectiveness of the Company's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the Company's internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting; and

---

| | | |
|:---|:---|:---|
| 5. | The Company's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company's auditors and the audit committee of the Company's board of directors (or persons performing the equivalent functions): | The Company's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company's auditors and the audit committee of the Company's board of directors (or persons performing the equivalent functions): |
|  | a. | All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company's ability to record, process, summarize and report financial information; and |
|  | b. | Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company's internal control over financial reporting. |

---

---

| | |
|:---|:---|
| Date: December 10, 2025 | /s/ *Riccardo Canevari* |
|  | Riccardo Canevari |
|  | Chief Executive Officer |

---

## Exhibit 12.2

**Exhibit 12.2**

**Certification pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act <br> of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002**

I, Phillip Hains, certify that:

1. I have reviewed this annual report on Form 20–F/A of Radiopharm Theranostics Limited (the "Company");

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this report;

4. The Company's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and have:

&nbsp;&nbsp;&nbsp;&nbsp;a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. [ *paragraph omitted in accordance with Exchange Act Rule 13a-14(a)* ];

c. Evaluated the effectiveness of the Company's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the Company's internal control over financial reporting that occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting; and

5. The Company's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company's auditors and the audit committee of the Company's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company's internal control over financial reporting.

---

| | |
|:---|:---|
| Date: December 10, 2025 | /s/ *Phillip Hains* |
|  | Phillip Hains |
|  | Chief Financial Officer |

---

## Exhibit 13.1

**Exhibit 13.1**

**Certification pursuant to 18 U.S.C.** § **1350,<br> as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002**

In connection with the filing of the Annual Report on Form 20-F/A for the year ended June 30, 2025 (the "Report") by Radiopharm Theranostics Limited (the "Company"), the undersigned, as the Chief Executive Officer of the Company, hereby certifies pursuant to 18 U.S.C. Section 1350, that, to my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

---

| | |
|:---|:---|
| Date: December 10, 2025 | /s/ *Riccardo Canevari* |
|  | Riccardo Canevari |
|  | Chief Executive Officer |

---

## Exhibit 13.2

**Exhibit 13.2**

**Certification pursuant to 18 U.S.C.** § **1350,<br> as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002**

In connection with the filing of the Annual Report on Form 20-F/A for the year ended June 30, 2025 (the "Report") by Radiopharm Theranostics Limited (the "Company"), the undersigned, as the Chief Financial Officer of the Company, hereby certifies pursuant to 18 U.S.C. Section 1350, that, to my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

---

| | |
|:---|:---|
| Date: December 10, 2025 | */s/ Phillip Hains* |
|  | Phillip Hains |
|  | Chief Financial Officer |

---