Over the 90-day window ending December 12, 2025, Cartesian Therapeutics's three dominant insider ownership positions are held by Director Murat Kalayoglu (5.06Mn shares), TenPercentOwner Elizabeth Hoge (4.56Mn shares), Director Michael Singer (149.75K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Timothy A Springer | 9,300,198 | 11 Apr, 2025 | |
| Murat Kalayoglu | 5,064,237 | 06 Jan, 2025 | |
| Elizabeth Hoge | 4,555,260 | 15 Oct, 2024 | |
| Peter G Traber | Chief Medical Officer | 15,059 | 26 Sep, 2023 |
| Lloyd P. Johnston | Chief Operations Officer | 8,850 | 06 Jan, 2023 |
| Takashi Kei Kishimoto | Chief Scientific Officer | 7,510 | 01 Jun, 2023 |
| Carsten Brunn | President And CEO | 204,096 | 07 Jan, 2025 |
| Aymeric Sallin | 5,933 | 04 Jan, 2024 | |
| Michael Singer | 149,752 | 19 Nov, 2025 | |
| Blaine Davis | Chief Financial Officer | 94,811 | 07 Jan, 2025 |
| Kevin Tan | Chief Financial Officer | 2,566 | 05 Jan, 2022 |
| Emily English | Chief Operations Officer | 62,726 | 02 Dec, 2025 |
| Christopher M Jewell | Chief Scientific Officer | 62,490 | 13 Jan, 2025 |
| Metin Kurtoglu | Chief Technology Officer | 62,258 | 07 Jan, 2025 |
| Timothy C Barabe | 54,366 | 08 Dec, 2025 | |
| Bradford D. Dahms | Chief Financial Officer | 1,267 | 06 Jan, 2021 |
| Milos Miljkovic | Chief Medical Officer | 35,393 | 07 Jan, 2025 |
| Carrie Smith Cox | 15,629 | 06 Jan, 2025 | |
| Patrick J Zenner | 10,374 | 06 Jan, 2025 | |
| Nishan M Desilva | 8,766 | 06 Jan, 2025 | |
| Kemal Malik | 8,533 | 06 Jan, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 04 Dec, 2025 | Timothy C Barabe | Common Stock | A | 30,000 | $6.86 | 54,366 | D | P |
| 28 Nov, 2025 | Emily English | Common Stock | A | 7,500 | $3.30 | 62,726 | D | M |
| 18 Nov, 2025 | Michael Singer | Common Stock | D | 20,000 | $0.00 | 53,533 | D | G |
| 12 May, 2025 | Emily English | Common Stock | A | 7,500 | $3.30 | 55,226 | D | M |
| 15 Apr, 2025 | Emily English | Common Stock | A | 7,500 | $3.30 | 47,726 | D | M |
| 09 Apr, 2025 | Timothy A Springer | Common Stock | A | 7,342 | $9.43 | 8,628,667 | D | P |
| 09 Apr, 2025 | Timothy A Springer | - | - | 8,628,667 | D | |||
| 09 Apr, 2025 | Timothy A Springer | - | - | 8,628,698 | D | |||
| 09 Apr, 2025 | Timothy A Springer | Common Stock | A | 31 | $9.95 | 8,628,698 | D | P |
| 09 Apr, 2025 | Timothy A Springer | - | - | 571,402 | I | |||
| 09 Apr, 2025 | Timothy A Springer | Common Stock | A | 41,604 | $9.43 | 571,402 | I | P |
| 09 Apr, 2025 | Timothy A Springer | - | - | 571,580 | I | |||
| 09 Apr, 2025 | Timothy A Springer | Common Stock | A | 178 | $9.95 | 571,580 | I | P |
| 10 Apr, 2025 | Timothy A Springer | - | - | 8,636,664 | D | |||
| 10 Apr, 2025 | Timothy A Springer | Common Stock | A | 7,966 | $10.43 | 8,636,664 | D | P |
| 10 Apr, 2025 | Timothy A Springer | Common Stock | A | 609 | $10.92 | 8,637,273 | D | P |
| 10 Apr, 2025 | Timothy A Springer | - | - | 8,637,273 | D | |||
| 10 Apr, 2025 | Timothy A Springer | - | - | 616,724 | I | |||
| 10 Apr, 2025 | Timothy A Springer | Common Stock | A | 45,144 | $10.43 | 616,724 | I | P |
| 10 Apr, 2025 | Timothy A Springer | - | - | 620,175 | I |