Key facts
- This page summarizes Hester Denise Larkin's Form 3 filing for Radiopharm Theranostics Ltd (RADX).
- 0 reported transactions and 5 derivative rows are listed below.
- Accepted by SEC: 31 Mar 2026, 06:10.
Hester Denise Larkin - 18 Mar 2026 Form 3 Insider Report for Radiopharm Theranostics Ltd (RADX)
- Reporting relationship
- Director
- Issuer ticker
- RADX
- Reported as of
- 18 Mar 2026
- Net transaction value
- $0
- Reporting owner signature
- /s/ Hester Larkin
Source evidence
Original filing metadata and source links for verification.
3 source fields
Reporting owner
1 detail
Key filing fact
Hester Denise Larkin filed Form 3 for Radiopharm Theranostics Ltd (RADX) on 31 Mar 2026.
Change
- No earlier filing in this sequence is available for direct comparison.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Official SEC source
View source filing
Ownership activity is grounded in SEC Form 3 disclosures.
Reporting Owners (1)
CIK 0002123383
Primary reporting owner
Larkin Hester Denise
- Relationship
- Director
- Address
- SUITE 1 LEVEL 3, 62 LYGON STREET, CARLTON SOUTH, VICTORIA, AUSTRALIA
- Signature
- /s/ Hester Larkin
- Signature date
- 31 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
RADX
holding
Ordinary Shares
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 644,247
- Date
- 18 Mar 2026
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
RADX
holding
Derivative
Option (right to buy)
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 275,000
- Exercise price
- $0.0600
RADX
holding
Derivative
Option (right to buy)
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 2,666,667
- Exercise price
- $0.0600
RADX
holding
Derivative
Option (right to buy)
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 5,333,333
- Exercise price
- $0.0600
- Footnotes
- F1
RADX
holding
Derivative
Option (right to buy)
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 627,001
- Exercise price
- $0.6000
RADX
holding
Derivative
Option (right to buy)
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- Date
- 18 Mar 2026
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 627,000
- Exercise price
- $0.6000
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
Granted on December 16, 2024. 2,666,667 options will vest on September 30, 2026 and 2,666,666 options will vest on September 30, 2027 provided Ms. Larkin is still a Director on such dates.
SEC remarks
All exercise prices are in Australian dollars.