Cartesian Therapeutics, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Bot Adrian Ion | — | Award / Grant | 5,800 | — | — | 5,800 | Dec 16, 2025 |
| BARABE TIMOTHY C | — | Purchase | 30,000 | $6.86 | $205,800 | 54,366 | Dec 4, 2025 |
| English Emily | Chief Operations Officer | Option Exercise | 7,500 | $3.30 | $24,750 | 62,726 | Nov 28, 2025 |
| Singer Michael | — | Gift | 20,000 | — | — | 53,533 | Nov 18, 2025 |
| English Emily | Chief Operations Officer | Option Exercise | 7,500 | $3.30 | $24,750 | 55,226 | May 12, 2025 |
| English Emily | Chief Operations Officer | Option Exercise | 7,500 | $3.30 | $24,750 | 47,726 | Apr 15, 2025 |
| SPRINGER TIMOTHY A | — | Purchase | 7,342 | $9.43 | $69,235 | 8,628,667 | Apr 10, 2025 |
| SPRINGER TIMOTHY A | — | Purchase | 20,234 | $14.97 | $302,903 | 8,566,436 | Mar 20, 2025 |
| SPRINGER TIMOTHY A | — | Purchase | 8,983 | $17.78 | $159,718 | 8,527,440 | Jan 13, 2025 |
| Jewell Christopher M | Chief Scientific Officer | Option Exercise | 9,000 | $3.23 | $29,070 | 62,490 | Jan 10, 2025 |
| English Emily | Chief Operations Officer | Sale | 891 | $16.72 | $14,898 | 41,132 | Jan 6, 2025 |
| Davis Blaine | Chief Financial Officer | Sale | 3,961 | $16.72 | $66,228 | 98,839 | Jan 6, 2025 |
| Kurtoglu Metin | Chief Technology Officer | Sale | 2,458 | $16.83 | $41,368 | 62,258 | Jan 3, 2025 |
| Miljkovic Milos | Chief Medical Officer | Sale | 948 | $16.83 | $15,955 | 35,393 | Jan 3, 2025 |
| Jewell Christopher M | Chief Scientific Officer | Sale | 1,286 | $16.83 | $21,643 | 53,490 | Jan 3, 2025 |
| Brunn Carsten | President and CEO | Sale | 8,708 | $16.83 | $146,556 | 204,096 | Jan 3, 2025 |
| Brunn Carsten | President and CEO | Award / Grant | 57,500 | — | — | 221,367 | Jan 2, 2025 |
| Jewell Christopher M | Chief Scientific Officer | Award / Grant | 16,100 | — | — | 56,040 | Jan 2, 2025 |
| English Emily | Chief Operations Officer | Award / Grant | 16,100 | — | — | 42,023 | Jan 2, 2025 |
| Davis Blaine | Chief Financial Officer | Award / Grant | 22,000 | — | — | 102,800 | Jan 2, 2025 |
| ZENNER PATRICK J | — | Award / Grant | 2,600 | — | — | 10,374 | Jan 2, 2025 |
| Miljkovic Milos | Chief Medical Officer | Award / Grant | 19,000 | — | — | 37,273 | Jan 2, 2025 |
| Kalayoglu Murat | — | Award / Grant | 2,600 | — | — | 508,977 | Jan 2, 2025 |
| BARABE TIMOTHY C | — | Award / Grant | 2,600 | — | — | 24,366 | Jan 2, 2025 |
| SPRINGER TIMOTHY A | — | Award / Grant | 2,600 | — | — | 8,510,495 | Jan 2, 2025 |
| Malik Kemal | — | Award / Grant | 2,600 | — | — | 8,533 | Jan 2, 2025 |
| Kurtoglu Metin | Chief Technology Officer | Award / Grant | 16,100 | — | — | 67,133 | Jan 2, 2025 |
| Singer Michael | — | Award / Grant | 2,600 | — | — | 73,533 | Jan 2, 2025 |
| COX CARRIE SMITH | — | Award / Grant | 2,600 | — | — | 15,629 | Jan 2, 2025 |
| DeSilva Nishan M | — | Award / Grant | 2,600 | — | — | 8,766 | Jan 2, 2025 |
| Singer Michael | — | Gift | 20,000 | — | — | 70,933 | Dec 26, 2024 |
| English Emily | SVP, Head of Manufacturing | Option Exercise | 7,650 | $3.30 | $25,245 | 25,923 | Dec 26, 2024 |
| SPRINGER TIMOTHY A | — | Purchase | 5,181 | $19.00 | $98,439 | 8,507,895 | Dec 19, 2024 |
| Kurtoglu Metin | Chief Technology Officer | Sale | 2,901 | $24.35 | $70,639 | 51,033 | Dec 9, 2024 |
| Kurtoglu Metin | Chief Technology Officer | Option Exercise | 200 | $1.41 | $282 | 51,233 | Nov 21, 2024 |
| Jewell Christopher M | Chief Scientific Officer | Option Exercise | 14,000 | $3.23 | $45,220 | 39,940 | Nov 20, 2024 |
| Singer Michael | — | Gift | 28,821 | — | — | 90,933 | Nov 19, 2024 |
| SPRINGER TIMOTHY A | — | Purchase | 20,181 | $18.42 | $371,734 | 8,455,706 | Nov 15, 2024 |
| Kurtoglu Metin | Chief Technology Officer | Sale | 22,068 | $17.20 | $379,570 | 51,033 | Nov 14, 2024 |
| Miljkovic Milos | Chief Medical Officer | Option Exercise | 20,000 | $3.23 | $64,600 | 38,273 | Nov 14, 2024 |
| Jewell Christopher M | Chief Scientific Officer | Sale | 17,500 | $17.02 | $297,850 | 25,940 | Nov 14, 2024 |
| Kalayoglu Murat | — | Option Exercise | 1,518,373 | — | — | 4,555,260 | Oct 11, 2024 |
| Seven One Eight Three Four Irrevocable Trust | — | Option Exercise | 1,518,373 | — | — | 4,555,260 | Oct 11, 2024 |
| SPRINGER TIMOTHY A | — | Purchase | 10,249 | $19.01 | $194,833 | 7,863,655 | Oct 3, 2024 |
| SPRINGER TIMOTHY A | — | Option Exercise | 1,307 | — | — | 12,816 | Sep 25, 2024 |
| SPRINGER TIMOTHY A | — | Purchase | 8,016 | $12.72 | $101,964 | 11,509 | Aug 12, 2024 |
| BARABE TIMOTHY C | — | Purchase | 7,500 | $12.70 | $95,250 | 21,766 | Aug 12, 2024 |
| SPRINGER TIMOTHY A | — | Award / Grant | 1,307 | $20.00 | $26,140 | 1,307 | Jul 2, 2024 |
| Malik Kemal | — | Award / Grant | 5,933 | — | — | 5,933 | Jul 1, 2024 |
| Singer Michael | — | Option Exercise | 377,208 | — | — | 383,796 | Apr 8, 2024 |