Quick Takeaways
- Murat Kalayoglu filed SCHEDULE 13D/A for Cartesian Therapeutics, Inc. Common Stock (RNAC).
- Disclosed ownership: 20%.
- Date of event: 31 Mar 2026.
Murat Kalayoglu - 31 Mar 2026 SCHEDULE 13D/A Report for Cartesian Therapeutics, Inc. Common Stock (RNAC)
- Filing Manager
- Murat Kalayoglu
- Reporting Manager
- Murat Kalayoglu
- Symbol
- RNAC
- Shares outstanding
- 29,316,437 shares
- Disclosed Ownership
- 5,833,971 shares
- Ownership
- 20%
- Form type
- SCHEDULE 13D/A
- Filing time
- 02 Apr 2026, 17:37:40 UTC
- Date of event
- 31 Mar 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"Murat Kalayoglu disclosed 20% ownership in Cartesian Therapeutics, Inc. Common Stock (RNAC) on 31 Mar 2026."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 02 Apr 2026, 17:37.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (4)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Murat Kalayoglu | 20% | 5,833,971 | 5,833,971 | 0 | /s/ Murat Kalayoglu | Murat Kalayoglu | 0002000002 |
| Seven One Eight Three Four Irrevocable Trust | 18% | 5,313,261 | 5,313,261 | 0 | /s/ Murat Kalayoglu | Murat Kalayoglu, Authorized Person | 0002000959 |
| Elizabeth Hoge | 18% | 5,313,261 | 0 | 5,313,261 | /s/ Murat Kalayoglu | Murat Kalayoglu, Authorized Person | 0002000987 |
| Sinan Kalayoglu | 18% | 5,313,261 | 0 | 5,313,261 | /s/ Murat Kalayoglu | Murat Kalayoglu, Authorized Person |