Insiders / Boess Carsten
Boess Carsten
CIK 1277495personinsider
Companies
2
First seen
Feb 26, 2026
Last activity
Mar 2, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Avidity Biosciences, Inc. · RNA | 0 | — |
| Atrium Therapeutics, Inc. · RNA | — | — |
All securities held
1 position · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Atrium Therapeutics, Inc. | Stock Option (Right to Buy)Derivative | 20,000 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Feb 27, 2026 | Other | RNA Avidity Biosciences, Inc. Stock Option (Right to Buy) | — | -21K -100.00% | 0 0.00% of shares | low |
| Feb 27, 2026 | Other | RNA Avidity Biosciences, Inc. Stock Option (Right to Buy) | — | -15K -100.00% | 0 0.00% of shares | low |
| Feb 27, 2026 | Other | RNA Avidity Biosciences, Inc. Stock Option (Right to Buy) | — | -22K -100.00% | 0 0.00% of shares | low |
| Feb 27, 2026 | Other | RNA Avidity Biosciences, Inc. Stock Option (Right to Buy) | — | -22K -100.00% | 0 0.00% of shares | low |
| Feb 27, 2026 | Other | RNA Avidity Biosciences, Inc. Stock Option (Right to Buy) | — | -13K -100.00% | 0 0.00% of shares | low |
| Feb 27, 2026 | Other | RNA Avidity Biosciences, Inc. Stock Option (Right to Buy) | — | -10K -100.00% | 0 0.00% of shares | low |
| Feb 27, 2026 | Other | RNA Avidity Biosciences, Inc. Common Stock | — | -7K -100.00% | 0 0.00% of shares | low |
| Feb 27, 2026 | Grant | RNA Atrium Therapeutics, Inc. Stock Option (Right to Buy) | — | +20K | 20,000 0.12% of shares | low |