List of insiders holdings for Cartesian Therapeutics Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | SPRINGER TIMOTHY A Director 10% Owner | 2026-01-06 16:18:13 | 8,654,085 987,208 | 9,641,293 | Form 4 |
| 2 | TAS Partners LLC Leukon Investments LP SPRINGER TIMOTHY A Director | 2025-01-15 16:25:12 | 9,555,394 0 | 9,555,394 | Form 13D |
| 3 | Hoge Elizabeth Seven One Eight Three Four Irrevocable Trust 10% Owner | 2024-10-15 16:43:23 | 0 5,118,039 | 5,118,039 | Form 4 |
| 4 | Kalayoglu Murat Director 10% Owner | 2026-01-06 16:18:07 | 519,377 4,555,260 | 5,074,637 | Form 4 |
| 5 | GORDON CARL L Director 10% Owner | 2016-06-29 16:49:20 | 0 1,825,415 | 1,825,415 | Form 4 |
| 6 | Flagship Ventures Fund 2007 L.P. Flagship Ventures 2007 General Partner LLC AFEYAN NOUBAR 10% Owner | 2016-06-29 16:44:05 | 0 1,651,862 | 1,651,862 | Form 4 |
| 7 | Osage University Partners II L.P. Osage University GP II L.P. Osage Partners LLC 10% Owner | 2016-06-29 16:47:05 | 0 862,543 | 862,543 | Form 4 |
| 8 | Singer Michael Director | 2026-03-13 16:14:52 | 49,578 654,868 | 704,446 | Form 4 |
| 9 | von Andrian Ulrich 10% Owner | 2016-06-21 18:22:23 | 513,944 100,642 | 614,586 | Form 3 |
| 10 | KANIA EDWIN M JR Director | 2017-05-16 17:28:58 | 26,528 560,067 | 586,595 | Form 4 |
| 11 | LANGER ROBERT 10% Owner | 2016-06-21 18:30:23 | 556,695 0 | 556,695 | Form 3 |
| 12 | TRABER PETER G Chief Medical Officer | 2023-09-26 18:00:28 | 451,826 0 | 451,826 | Form 4 |
| 13 | Tan Kevin Chief Financial Officer | 2022-01-05 16:36:06 | 417,000 0 | 417,000 | Form 4 |
| 14 | Farokhzad Omid Director | 2019-08-16 16:16:57 | 188,004 227,677 | 415,681 | Form 4/A |
| 15 | Sallin Aymeric Director | 2024-01-04 17:07:20 | 406,000 0 | 406,000 | Form 4 |
| 16 | Brunn Carsten President and CEO | 2026-01-08 16:20:02 | 323,530 0 | 323,530 | Form 4 |
| 17 | CAUTREELS WERNER President and CEO | 2017-11-14 21:57:55 | 321,203 0 | 321,203 | Form 4 |
| 18 | Dahms Bradford D. Chief Financial Officer | 2021-01-06 16:49:34 | 268,000 0 | 268,000 | Form 4 |
| 19 | Johnston Lloyd P. Chief Operations Officer | 2023-01-06 17:16:11 | 265,515 0 | 265,515 | Form 4 |
| 20 | Kishimoto Takashi Kei Chief Scientific Officer | 2023-06-01 16:27:18 | 225,316 0 | 225,316 | Form 4 |
| 21 | VTB Capital I2BF Netherlands B.V. Selecta RKFN Ltd. 10% Owner | 2016-06-29 16:47:35 | 0 178,890 | 178,890 | Form 4 |
| 22 | English Emily Chief Operations Officer | 2026-01-06 16:18:28 | 165,226 0 | 165,226 | Form 4 |
| 23 | Kogan Elona Esq. General Counsel | 2020-01-06 20:08:14 | 140,000 0 | 140,000 | Form 4 |
| 24 | Donohue Ann K. VP Finance | 2021-06-03 16:31:48 | 135,645 0 | 135,645 | Form 3 |
| 25 | Jewell Christopher M Chief Scientific Officer | 2025-01-13 16:09:06 | 129,922 0 | 129,922 | Form 4 |
| 26 | Davis Blaine Chief Financial Officer | 2026-01-08 16:19:50 | 121,220 0 | 121,220 | Form 4 |
| 27 | Schecter Alison D. Chief Medical Officer | 2020-01-06 20:08:37 | 100,000 0 | 100,000 | Form 4 |
| 28 | Smolinski Stephen Chief Commercial Officer | 2020-01-06 20:08:56 | 100,000 0 | 100,000 | Form 4 |
| 29 | ANDO GORAN Director | 2023-01-04 17:04:42 | 75,000 0 | 75,000 | Form 4 |
| 30 | BARABE TIMOTHY C Director | 2026-01-06 16:18:38 | 64,766 0 | 64,766 | Form 4 |
| 31 | Kurtoglu Metin Chief Technology Officer | 2025-01-07 20:05:42 | 62,258 0 | 62,258 | Form 4 |
| 32 | Miljkovic Milos Chief Medical Officer | 2026-01-08 16:19:56 | 58,820 0 | 58,820 | Form 4 |
| 33 | Leaman John Harold CFO, Treas. & Hd Corp Strategy | 2018-06-19 19:05:26 | 50,000 0 | 50,000 | Form 4 |
| 34 | Keller Peter Chief Business Officer | 2017-07-11 16:43:50 | 32,000 0 | 32,000 | Form 4 |
| 35 | COX CARRIE SMITH Director | 2025-01-06 16:19:16 | 31,895 0 | 31,895 | Form 4 |
| 36 | Seymour June Ann Chief Accounting Officer | 2026-01-06 16:18:53 | 25,500 0 | 25,500 | Form 4 |
| 37 | Abraham David GC, CCO & Corporate Secretary | 2018-06-19 19:06:25 | 25,000 0 | 25,000 | Form 4 |
| 38 | Bot Adrian Ion Director | 2025-12-18 17:05:19 | 23,000 0 | 23,000 | Form 4 |
| 39 | ZENNER PATRICK J Director | 2026-01-06 16:18:59 | 20,774 0 | 20,774 | Form 4 |
| 40 | DeSilva Nishan M Director | 2026-01-06 16:19:28 | 19,166 0 | 19,166 | Form 4 |
| 41 | Malik Kemal Director | 2026-01-06 16:19:14 | 18,933 0 | 18,933 | Form 4 |
| 42 | HUTT PETER BARTON Director | 2018-06-19 19:03:52 | 10,000 0 | 10,000 | Form 4 |
| 43 | Nashat Amir Director | 2019-06-18 16:21:42 | 10,000 0 | 10,000 | Form 4 |
| 44 | Sands Earl Chief Medical Officer | 2017-11-21 16:08:37 | 7,500 0 | 7,500 | Form 4 |
| 45 | Siewers David CFO and Treasurer | 2017-09-22 17:30:29 | 5,000 0 | 5,000 | Form 4 |
| 46 | RUSNANO 10% Owner | 2018-02-06 15:57:02 | 0 0 | 0 | Form 13G |
| 47 | Nanodimension Management Ltd Nanodimension Limited Partnership 10% Owner | 2018-02-14 15:59:06 | 0 0 | 0 | Form 13G |
| 48 | Polaris Venture Management Co. V L.L.C. Polaris Venture Partners V L.P. Polaris Venture Partners Entrepreneurs' Fund V L.P. Polaris Venture Partners Founders' Fund V L.P. Polaris Venture Partners Special Founders' Fund V L.P. 10% Owner | 2020-02-12 16:42:33 | 0 0 | 0 | Form 13D |
| 49 | Myers Scott Dunseth Director | 2023-11-15 17:16:10 | 0 0 | 0 | Form 4 |
| 50 | ORBIMED ADVISORS LLC OrbiMed Capital GP III LLC ISALY SAMUEL D Director 10% Owner | 2020-02-05 16:36:54 | 0 0 | 0 | Form 13D |
| 51 | Shaydullina Leysan Director | 2016-06-21 18:29:24 | 0 0 | 0 | Form 3 |