| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Singer Michael | Director | C/O CARTESIAN THERAPEUTICS, INC., 7495 NEW HORIZON WAY, FREDERICK | /s/ Matthew Bartholomae, Attorney-in-Fact for Michael Singer | 19 Nov 2025 | 0002000122 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | RNAC | Common Stock | Gift | $0 | -20,000 | -27% | $0.000000 | 53,533 | 18 Nov 2025 | Direct | |
| holding | RNAC | Common Stock | 383,796 | 18 Nov 2025 | by trust | F1 | |||||
| holding | RNAC | Common Stock | 56,719 | 18 Nov 2025 | by trust | F2 | |||||
| holding | RNAC | Common Stock | 7,127 | 18 Nov 2025 | by trust | F3 | |||||
| holding | RNAC | Common Stock | 14,788 | 18 Nov 2025 | by spouse | F4 | |||||
| holding | RNAC | Common Stock | 96,219 | 18 Nov 2025 | as custodian | F5 | |||||
| holding | RNAC | Common Stock | 96,219 | 18 Nov 2025 | as custodian | F6 |
| Id | Content |
|---|---|
| F1 | Shares are held in a trust for the benefit of the reporting person's spouse and children. The reporting person's spouse is a trustee of the trust. |
| F2 | Shares are held in a trust for which the reporting person is a beneficiary. The reporting person is a trustee of the trust. |
| F3 | Shares are held in a trust for which the reporting person is a beneficiary. The reporting person's spouse is a trustee of the trust. |
| F4 | Shares are held by the reporting person's spouse. |
| F5 | The shares are held for LS, the child of the reporting person, through a custodial account established pursuant to the Uniform Transfer to Minors Act ("UTMA") for which the reporting person serves as custodian. |
| F6 | The shares are held for SS, the child of the reporting person, through a custodial account established pursuant to the UTMA for which the reporting person serves as custodian. |