Insiders / EcoR1 Capital, LLC
EcoR1 Capital, LLC
CIK 1587114personinsiderbeneficial ownerfund
Companies
1
First seen
Jan 8, 2026
Last activity
Jun 16, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Aktis Oncology, Inc. · AKTS | 347,305 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Aktis Oncology, Inc. | Common Stock | 347,305 |
| Aktis Oncology, Inc. | Class A Common StockDerivative | 1,051,412 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Jan 12, 2026 | Buy | AKTS Aktis Oncology, Inc. Common Stock | $37.40M | +2.1M +91.50% | 4,348,658 7.87% of shares | high |
| Jan 12, 2026 | Buy | AKTS Aktis Oncology, Inc. Common Stock | $2.60M | +144K +71.20% | 347,305 0.63% of shares | high |
| Jan 12, 2026 | Other | AKTS Aktis Oncology, Inc. Class A Common Stock | — | +86K | 86,222 0.16% of shares | low |
| Jan 12, 2026 | Other | AKTS Aktis Oncology, Inc. Class A Common Stock | — | +965K | 965,190 1.75% of shares | low |
| Jan 12, 2026 | Other | AKTS Aktis Oncology, Inc. Series B Redeemable Convertible Preferred Stock | — | -103K -100.00% | 0 0.00% of shares | low |
| Jan 12, 2026 | Other | AKTS Aktis Oncology, Inc. Series B Redeemable Convertible Preferred Stock | — | -2.4M -100.00% | 0 0.00% of shares | low |
| Jan 12, 2026 | Other | AKTS Aktis Oncology, Inc. Series A Redeemable Convertible Preferred Stock | — | -489K -100.00% | 0 0.00% of shares | low |
| Jan 12, 2026 | Other | AKTS Aktis Oncology, Inc. Series A Redeemable Convertible Preferred Stock | — | -997K -100.00% | 0 0.00% of shares | low |
| Jan 12, 2026 | Other | AKTS Aktis Oncology, Inc. Series A Redeemable Convertible Preferred Stock | — | -9.9M -100.00% | 0 0.00% of shares | low |
| Jan 12, 2026 | Other | AKTS Aktis Oncology, Inc. Common Stock | — | +129K | 128,506 0.23% of shares | low |