Feeds › Ownership stakes (13D / 13G)
Ownership stakes (13D / 13G)
Investors who own more than 5% of a company, from activists (13D) to passive holders (13G).
About this data
- What it is
- An investor who owns more than 5% of a public company must say so. Investors who may try to influence the company, such as activists, file the longer Schedule 13D; passive holders file the shorter Schedule 13G.
- Who files it
- The investor, within days of crossing 5%, and again whenever the stake changes materially.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- 13G filings are far more common than 13D. A 13D usually means the investor intends to push for changes, so it tends to get more attention.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Filings per day, last 30 days
13D (activist) 13G (passive)
Latest ownership filings
Showing: ticker CATX
| Filed | ScheduleBoth report a stake of more than 5%. A 13D is filed by investors who may try to influence the company, such as activists; a 13G by passive holders. | Company | Investor | Shares | % of shares | Filing |
|---|---|---|---|---|---|---|
| Nov 12, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Alpha Therapy, LLC | 4.74M | 3.9% | SCHEDULE 13D/A ↗ |
| Nov 12, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Medical Imaging, Inc. | 4.74M | 3.9% | SCHEDULE 13D/A ↗ |
| Nov 12, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Holdings, Inc. | 4.74M | 3.9% | SCHEDULE 13D/A ↗ |
| Nov 10, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | State Street Corporation | 2.03M | 1.8% | SCHEDULE 13G ↗ |
| Sep 23, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Alpha Therapy, LLC | 8.74M | 7.7% | SCHEDULE 13D/A ↗ |
| Sep 23, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Medical Imaging, Inc. | 8.74M | 7.7% | SCHEDULE 13D/A ↗ |
| Sep 23, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Holdings, Inc. | 8.74M | 7.7% | SCHEDULE 13D/A ↗ |
| Sep 4, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Alpha Therapy, LLC | 11.44M | 10.0% | SCHEDULE 13D/A ↗ |
| Sep 4, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Medical Imaging, Inc. | 11.44M | 10.0% | SCHEDULE 13D/A ↗ |
| Sep 4, 2026 | SCHEDULE 13D/A (amended) | CATX Perspective Therapeutics, Inc. | Lantheus Holdings, Inc. | 11.44M | 10.0% | SCHEDULE 13D/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Israel A. Englander | 6.32M | 5.5% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Millennium Group Management LLC | 6.32M | 5.5% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Millennium Management LLC | 6.32M | 5.5% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Integrated Core Strategies (US) LLC | 5.89M | 5.2% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | State Street Corporation | 6.05M | 5.3% | SCHEDULE 13G ↗ |
| Jul 29, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | BlackRock, Inc. | 7.78M | 6.8% | SCHEDULE 13G ↗ |
| Jul 20, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Israel A. Englander | 6.04M | 5.3% | SCHEDULE 13G ↗ |
| Jul 20, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Millennium Group Management LLC | 6.04M | 5.3% | SCHEDULE 13G ↗ |
| Jul 20, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Millennium Management LLC | 6.04M | 5.3% | SCHEDULE 13G ↗ |
| Jun 30, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Israel A. Englander | 4.89M | 4.3% | SCHEDULE 13G ↗ |
| Jun 30, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Millennium Group Management LLC | 4.89M | 4.3% | SCHEDULE 13G ↗ |
| Jun 30, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Millennium Management LLC | 4.89M | 4.3% | SCHEDULE 13G ↗ |
| May 12, 2026 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Morgan Stanley | 2.96M | 2.6% | SCHEDULE 13G/A ↗ |
| Apr 27, 2026 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | BlackRock, Inc. | 5.25M | 4.6% | SCHEDULE 13G/A ↗ |
| Mar 10, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Michael Gregory | 6.05M | 5.3% | SCHEDULE 13G ↗ |
| Mar 10, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Avidity Private Master Fund I LP | 5.85M | 5.1% | SCHEDULE 13G ↗ |
| Mar 10, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Avidity Capital Partners (GP) LLC | 6.05M | 5.3% | SCHEDULE 13G ↗ |
| Mar 10, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Avidity Capital Partners Fund (GP) LP | 6.05M | 5.3% | SCHEDULE 13G ↗ |
| Mar 10, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Avidity Partners Management (GP) LLC | 6.05M | 5.3% | SCHEDULE 13G ↗ |
| Mar 10, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Avidity Partners Management LP | 6.05M | 5.3% | SCHEDULE 13G ↗ |
| Feb 12, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Morgan Stanley | 4.46M | 6.0% | SCHEDULE 13G ↗ |
| Feb 9, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Michael Kramarz | 11.94M | 9.9% | SCHEDULE 13G ↗ |
| Feb 9, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Robert Egen Atkinson | 11.94M | 9.9% | SCHEDULE 13G ↗ |
| Feb 9, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Commodore Capital Master LP | 11.94M | 9.9% | SCHEDULE 13G ↗ |
| Feb 9, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Commodore Capital LP | 11.94M | 9.9% | SCHEDULE 13G ↗ |
| Feb 6, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Chen Yu | 7.92M | 6.9% | SCHEDULE 13G ↗ |
| Feb 6, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | TCG Crossover Fund III, L.P. | 3.96M | 3.5% | SCHEDULE 13G ↗ |
| Feb 6, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | TCG Crossover GP III, LLC | 3.96M | 3.5% | SCHEDULE 13G ↗ |
| Feb 6, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | TCG Crossover Fund II, L.P. | 3.96M | 3.5% | SCHEDULE 13G ↗ |
| Feb 6, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | TCG Crossover GP II, LLC | 3.96M | 3.5% | SCHEDULE 13G ↗ |
| Feb 5, 2026 | SCHEDULE 13G | CATX Perspective Therapeutics, Inc. | Qatar Investment Authority | 7.07M | 6.2% | SCHEDULE 13G ↗ |
| Dec 5, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Abigail P. Johnson | 312,164 | 0.4% | SCHEDULE 13G/A ↗ |
| Dec 5, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | FMR LLC | 312,164 | 0.4% | SCHEDULE 13G/A ↗ |
| Nov 7, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Abigail P. Johnson | 6.06M | 8.2% | SCHEDULE 13G/A ↗ |
| Nov 7, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | FMR LLC | 6.06M | 8.2% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Janus Henderson Group PLC | 17,839 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Michael Gregory | 2.84M | 4.2% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | David Witzke | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Avidity Capital Partners (GP) LLC | 2.84M | 4.2% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | CATX Perspective Therapeutics, Inc. | Avidity Capital Partners Fund (GP) LP | 2.84M | 4.2% | SCHEDULE 13G/A ↗ |
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