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 MLTX
| 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 |
|---|---|---|---|---|---|---|
| Aug 14, 2026 | SCHEDULE 13G | MLTX MoonLake Immunotherapeutics | T. Rowe Price Investment Management, Inc. | 4.28M | 5.3% | SCHEDULE 13G ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Bihua Chen | 3.21M | 4.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Cormorant Asset Management, LP | 3.21M | 4.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | David Kroin | 8.00M | 9.7% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Deep Track Biotechnology Master Fund, Ltd. | 8.00M | 9.7% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Deep Track Capital, LP | 8.00M | 9.7% | SCHEDULE 13G/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Loy Spike | 25,667 | 0.0% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Mark N. Lampert | 16.00M | 19.7% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Inc/Il | 16.00M | 19.7% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Partners L P/Il | 16.00M | 19.7% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF GP Holdings LLC | 14.90M | 18.4% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Partners OS Ltd. | 1.04M | 1.3% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Trading Fund OS LP | 1.04M | 1.3% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF II GP LLC | 6.60M | 8.1% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Fund II LP | 6.60M | 8.1% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF I GP LLC | 8.30M | 10.2% | SCHEDULE 13D/A ↗ |
| Jun 29, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Fund L P | 8.30M | 10.2% | SCHEDULE 13D/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Bihua Chen | 4.48M | 6.3% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Cormorant Asset Management, LP | 4.48M | 6.3% | SCHEDULE 13G/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Loy Spike | 18,985 | 0.0% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Mark N. Lampert | 16.00M | 22.3% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Inc/Il | 16.00M | 22.3% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Partners L P/Il | 16.00M | 22.3% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF GP Holdings LLC | 14.90M | 20.8% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Partners OS Ltd. | 1.04M | 1.4% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Trading Fund OS LP | 1.04M | 1.4% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF II GP LLC | 6.60M | 9.2% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Fund II LP | 6.60M | 9.2% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF I GP LLC | 8.30M | 11.6% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Fund L P | 8.30M | 11.6% | SCHEDULE 13D/A ↗ |
| Feb 17, 2026 | SCHEDULE 13G | MLTX MoonLake Immunotherapeutics | Bihua Chen | 4.36M | 6.1% | SCHEDULE 13G ↗ |
| Feb 17, 2026 | SCHEDULE 13G | MLTX MoonLake Immunotherapeutics | Cormorant Asset Management, LP | 4.36M | 6.1% | SCHEDULE 13G ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Behzad Aghazadeh | 2.00M | 3.1% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Avoro Capital Advisors LLC | 2.00M | 3.1% | SCHEDULE 13G/A ↗ |
| Nov 12, 2025 | SCHEDULE 13G | MLTX MoonLake Immunotherapeutics | David Kroin | 4.61M | 6.5% | SCHEDULE 13G ↗ |
| Nov 12, 2025 | SCHEDULE 13G | MLTX MoonLake Immunotherapeutics | Deep Track Biotechnology Master Fund, Ltd. | 4.61M | 6.5% | SCHEDULE 13G ↗ |
| Nov 12, 2025 | SCHEDULE 13G | MLTX MoonLake Immunotherapeutics | Deep Track Capital, LP | 4.61M | 6.5% | SCHEDULE 13G ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Loy Spike | 18,985 | 0.0% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Mark N. Lampert | 19.75M | 27.7% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Inc/Il | 19.75M | 27.7% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Partners L P/Il | 19.75M | 27.7% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF GP Holdings LLC | 18.40M | 25.8% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF Partners OS Ltd. | 1.29M | 1.8% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Trading Fund OS LP | 1.29M | 1.8% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF II GP LLC | 8.17M | 11.4% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Fund II LP | 8.17M | 11.4% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | BVF I GP LLC | 10.24M | 14.3% | SCHEDULE 13D/A ↗ |
| Nov 10, 2025 | SCHEDULE 13D/A (amended) | MLTX MoonLake Immunotherapeutics | Biotechnology Value Fund L P | 10.24M | 14.3% | SCHEDULE 13D/A ↗ |
| Nov 5, 2025 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | Abigail P. Johnson | 726,931 | 1.1% | SCHEDULE 13G/A ↗ |
| Nov 5, 2025 | SCHEDULE 13G/A (amended) | MLTX MoonLake Immunotherapeutics | FMR LLC | 726,931 | 1.1% | SCHEDULE 13G/A ↗ |
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