Radiopharm: Regal Partners reports 3.34% stake

The reported position spans ordinary shares and American Depositary Shares, with shared voting and dispositive power listed.

Rhea-AI Filing Summary

Radiopharm Theranostics Ltd (RADX) is identified as the issuer in a Schedule 13G reporting that Regal Partners Funds Management Pty Limited and Regal Partners Limited each list beneficial ownership of 157,139,443 shares, or 3.34% of the class. The reported position includes 145,146,643 Ordinary Shares and 39,976 American Depositary Shares, each representing 300 Ordinary Shares.

The reporting persons list shared voting and dispositive power over 157,139,443 shares, with sole voting and dispositive power of 0. The signature block identifies Alexandra Rose and Kathleen Liu as Company Secretary.

Key Figures

Beneficial ownership: 157,139,443 shares Percent of class: 3.34% Ordinary Shares: 145,146,643 shares +4 more

7 metrics

Beneficial ownership 157,139,443 shares Amount listed by each reporting person

Percent of class 3.34% Beneficial ownership reported by each reporting person

Ordinary Shares 145,146,643 shares Included in reported beneficial ownership

American Depositary Shares 39,976 shares Included in reported beneficial ownership

ADS representation 300 Ordinary Shares per American Depositary Share Share ratio stated for the class

Shared voting power 157,139,443 shares Listed by each reporting person

Shared dispositive power 157,139,443 shares Listed by each reporting person

Key Terms

beneficial ownership, Shared Voting Power, Shared Dispositive Power, American Depositary Shares

4 terms

beneficial ownership financial

"Amount beneficially owned: 157,139,443"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Shared Voting Power financial

"Shared Voting Power 157,139,443.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

Shared Dispositive Power financial

"Shared Dispositive Power 157,139,443.00"

American Depositary Shares technical

"American Depositary Shares, each representing three hundred Ordinary Shares"

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RADX shares do the Regal Partners reporting persons beneficially own?

Regal Partners Funds Management Pty Limited and Regal Partners Limited each list beneficial ownership of 157,139,443 shares, or 3.34% of the class.

What voting and dispositive power do the Regal Partners entities report over RADX shares?

They list shared voting power and shared dispositive power of 157,139,443 shares. Sole voting power and sole dispositive power are each listed as 0.

How many RADX ADSs are included in the reported ownership?

The reported position includes 39,976 American Depositary Shares and 145,146,643 Ordinary Shares. Each American Depositary Share represents 300 Ordinary Shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/14/2026 - 09:16 PM EDT Accepted by SEC EDGAR 10/14/2026 - 09:16 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Radiopharm Theranostics Limited

(Name of Issuer)

Ordinary Shares, no par value and American Depositary Shares, each representing three hundred Ordinary Shares, no par value

(Title of Class of Securities)

75041J101

(CUSIP Number)

09/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 75041J101

1

Names of Reporting Persons

Regal Partners Funds Management Pty Limited

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

AUSTRALIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 157,139,443.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 157,139,443.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

157,139,443.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.34 %

12

Type of Reporting Person (See Instructions)

FI

Comment for Type of Reporting Person: The number of shares beneficially owned includes: (i) 145,146,643 Ordinary Shares, no par value ("Ordinary Shares") and (ii) 39,976 American Depositary Shares, each representing three hundred Ordinary Shares.

SCHEDULE 13G

CUSIP Number(s): 75041J101

1

Names of Reporting Persons

Regal Partners Limited

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

AUSTRALIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 157,139,443.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 157,139,443.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

157,139,443.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.34 %

12

Type of Reporting Person (See Instructions)

FI

Comment for Type of Reporting Person: The number of shares beneficially owned includes: (i) 145,146,643 Ordinary Shares, no par value ("Ordinary Shares") and (ii) 39,976 American Depositary Shares, each representing three hundred Ordinary Shares.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Radiopharm Theranostics Limited
(b)	Address of issuer's principal executive offices: Level 3, 62 Lygon Street, Carlton Vic, Australia, 3053
Item 2.
(a)	Name of person filing: Regal Partners Funds Management Pty Limited and Regal Partners Limited
(b)	Address or principal business office or, if none, residence: Level 46, Gateway, 1 Macquarie Place, Sydney NSW 2000
(c)	Citizenship: Australian
(d)	Title of class of securities: Ordinary Shares, no par value and American Depositary Shares, each representing three hundred Ordinary Shares, no par value
(e)	CUSIP Number(s): 75041J101
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
	FI
Item 4.	Ownership
(a)	Amount beneficially owned: 157,139,443
(b)	Percent of class: 3.34 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 157,139,443
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 157,139,443
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Regal Partners Funds Management Pty Limited

Signature:	/s/ Alexandra Rose
Name/Title:	Company Secretary
Date:	10/15/2026

Regal Partners Limited

Signature:	/s/ Kathleen Liu
Name/Title:	Company Secretary
Date:	10/15/2026