Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-01-20 2:01 pm Purchase | 2026-01-12 | 13D | Aktis Oncology, Inc. AKTS | EcoR1 Capital, LLC | 4,862,335 9.100% | 4,862,335 (New Position) | Filing History |
| 2026-01-09 5:24 pm Purchase | 2026-01-02 | 13G | Mereo BioPharma Group plc MREO | EcoR1 Capital, LLC | 74,500,000 9.400% | 74,500,000 (New Position) | Filing History |
| 2025-12-17 5:42 pm Purchase | 2025-12-10 | 13G | iBio, Inc. IBIO | EcoR1 Capital, LLC | 2,228,000 9.900% | 2,228,000 (New Position) | Filing History |
| 2025-11-19 5:39 pm Unchanged | 2025-11-16 | 13D | Zymeworks Inc. ZYME | EcoR1 Capital, LLC | 22,970,388 30.700% | 0 (Unchanged) | Filing History |
| 2025-11-14 4:19 pm Sale | 2025-09-30 | 13G | HilleVax, Inc. HLVX | EcoR1 Capital, LLC | 0 0.000% | -2,892,000 (Position Closed) | Filing History |
| 2025-11-14 4:17 pm Sale | 2025-09-30 | 13G | Tectonic Therapeutic, Inc. TECX | EcoR1 Capital, LLC | 0 0.000% | -935,121 (Position Closed) | Filing History |
| 2025-11-14 4:05 pm Purchase | 2025-09-30 | 13G | Atara Biotherapeutics, Inc. ATRA | EcoR1 Capital, LLC | 715,853 9.900% | 222,390 (+45.07%) | Filing History |
| 2025-11-14 3:47 pm Sale | 2025-09-30 | 13G | Voyager Therapeutics, Inc. VYGR | EcoR1 Capital, LLC | 4,003,636 6.800% | -1,614,083 (-28.73%) | Filing History |
| 2025-11-14 3:46 pm Purchase | 2025-09-30 | 13G | Neurogene Inc. NGNE | EcoR1 Capital, LLC | 1,442,902 9.900% | 160,734 (+12.54%) | Filing History |
| 2025-11-14 3:45 pm Sale | 2025-09-30 | 13G | Apellis Pharmaceuticals, Inc. APLS | EcoR1 Capital, LLC | 3,447,156 2.700% | -7,725,912 (-69.15%) | Filing History |
| 2025-08-19 6:32 pm Sale | 2025-08-15 | 13G | Adaptimmune Therapeutics plc ADAPY | EcoR1 Capital, LLC | 66,000,000 4.200% | -98,424,420 (-59.86%) | Filing History |
| 2025-08-14 1:26 pm Sale | 2025-06-30 | 13G | Kura Oncology, Inc. KURA | EcoR1 Capital, LLC | 4,200,000 4.800% | -3,398,797 (-44.73%) | Filing History |
| 2025-08-05 6:36 pm Purchase | 2025-07-29 | 13G | ORIC Pharmaceuticals, Inc. ORIC | EcoR1 Capital, LLC | 6,728,116 6.900% | 3,310,048 (+96.84%) | Filing History |
| 2025-07-28 8:37 pm Purchase | 2025-07-24 | 13D | Galapagos N.V. GLPG | EcoR1 Capital, LLC | 8,714,522 13.220% | 911,320 (+11.68%) | Filing History |
| 2025-07-24 5:30 pm Purchase | 2025-07-17 | 13G | HilleVax, Inc. HLVX | EcoR1 Capital, LLC | 2,892,000 5.800% | 2,892,000 (New Position) | Filing History |
| 2025-06-27 6:14 pm Purchase | 2025-06-26 | 13D | Zymeworks Inc. ZYME | EcoR1 Capital, LLC | 22,970,388 30.700% | 5,270,614 (+29.78%) | Filing History |
| 2025-05-29 9:08 pm Sale | 2025-05-27 | 13D | Prothena Corporation plc PRTA | EcoR1 Capital, LLC | 0 0.000% | -5,304,596 (Position Closed) | Filing History |
| 2025-05-19 6:33 pm Purchase | 2025-05-15 | 13D | Galapagos N.V. GLPG | EcoR1 Capital, LLC | 7,803,202 11.840% | 709,153 (+10.00%) | Filing History |
| 2025-05-16 7:22 pm Purchase | 2025-05-15 | 13D | iTeos Therapeutics, Inc. ITOS | EcoR1 Capital, LLC | 10,688,978 27.900% | 4,958,978 (+86.54%) | Filing History |
| 2025-05-15 2:28 pm Sale | 2025-03-31 | 13G | Third Harmonic Bio, Inc. THRD | EcoR1 Capital, LLC | 0 0.000% | -3,182,444 (Position Closed) | Filing History |