Radiopharm Theranostics Ltd
RADX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001949257
No open-market purchases or sales by Radiopharm Theranostics Ltd insiders were filed in the last 90 days; 6 institutions reported holding it in 13F filings for Q2 2026, worth $1.18M in total; no superinvestor holds it.
Other share classesRDPTF
Holders of 5% or more of RADX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Radiopharm Theranostics Ltd, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Regal Partners Holdings Pty Ltd | 13G | 9.05%320.7M shares | +1.75 ppfrom 7.30% | Jan 29, 20254 filings | Jan 8, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
7 Schedule 13D and 13G filings on Radiopharm Theranostics Ltd, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jan 16, 202611:31 AM ET | JPMorgan Chase & Co | 13G/A | 4.00%145.7M shares | −5.00 ppfrom 9.00%Below 5% | Dec 31, 2025 | SEC |
| Jan 8, 20266:06 AM ET | Regal Partners Holdings Pty Ltdand 2 others | 13G | 9.05%320.7M shares | +1.75 ppfrom 7.30% | Dec 31, 2025 | SEC |
| Jul 23, 20256:02 AM ET | Regal Funds Management Pty Ltd | 13G | 7.30%172.6M shares | −1.73 ppfrom 9.03% | Jun 30, 2025 | SEC |
| Jul 16, 20259:34 AM ET | JPMorgan Chase & Co | 13G/A | 9.00%220.5M shares | −1.20 ppfrom 10.20% | Jun 30, 2025 | SEC |
| May 12, 20256:03 AM ET | Regal Funds Management Pty Ltd | 13G | 9.03%210.7M shares | +1.07 ppfrom 7.96% | Mar 31, 2025 | SEC |
| Feb 11, 202512:16 PM ET | JPMorgan Chase & Co | 13G | 10.20%230.9M shares | New | Dec 31, 2024 | SEC |
| Jan 29, 20256:08 AM ET | Regal Funds Management Pty Ltd | 13G | 7.96%175.1M shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Radiopharm Theranostics Ltd shares.
No Form 144 notices for Radiopharm Theranostics Ltd are on file.