Insiders / Springer Timothy a
Springer Timothy a
CIK 1055624personinsider
Companies
2
First seen
Jan 6, 2026
Last activity
Jun 10, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Cartesian Therapeutics, Inc. · RNAC | 8,646,285 | — |
| Tectonic Therapeutic, Inc. · TECX | — | — |
All securities held
3 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Cartesian Therapeutics, Inc. | Common Stock | 8,646,285 |
| Cartesian Therapeutics, Inc. | Stock Option (Right to Buy)Derivative | 7,800 |
| Tectonic Therapeutic, Inc. | Stock Option (Right to Buy)Derivative | 10,200 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Jan 2, 2026 | Grant | RNAC Cartesian Therapeutics, Inc. Common Stock | $0 | +3K +0.03% | 8,646,285 28.58% of shares | low |
| Jun 9, 2026 | Grant | TECX Tectonic Therapeutic, Inc. Stock Option (Right to Buy) | — | +10K | 10,200 0.05% of shares | low |
| Jan 2, 2026 | Grant | RNAC Cartesian Therapeutics, Inc. Stock Option (Right to Buy) | — | +8K | 7,800 0.03% of shares | low |