Brunn Carsten, President and CEO of Cartesian Therapeutics, Inc. ($RNAC), made one open market sale of company shares in the last year, totaling $162 thousand. His most recent sale occurred on January 6, 2026. This activity ranks him 8,845th among 11,678 insiders by sale value in our database, well below the average of $8.6 million per seller across 6.4 transactions. Brunn Carsten recorded no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 6, 2026 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | S | Common Stock | 23766 | $6.82 | 323,530.0000 | 26,003,606 | 6.84% | 0.09% |
| Jan. 2, 2026 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | A | Employee Stock Option (right to buy) | 415700 | $0.00 | 415,700.0000 | 26,003,606 | 9999.99% | 1.60% |
| Jan. 2, 2026 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | A | Common Stock | 143200 | $0.00 | 347,296.0000 | 26,003,606 | 70.16% | 0.55% |
| Jan. 3, 2025 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | S | Common Stock | 8563 | $16.72 | 212,804.0000 | 25,767,369 | 3.87% | 0.03% |
| Jan. 6, 2025 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | S | Common Stock | 8708 | $16.83 | 204,096.0000 | 25,767,369 | 4.09% | 0.03% |
| Jan. 2, 2025 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | A | Employee Stock Option (right to buy) | 169100 | $0.00 | 368,133.0000 | 25,767,369 | 84.96% | 0.66% |
| Jan. 2, 2025 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | A | Common Stock | 57500 | $0.00 | 221,367.0000 | 25,767,369 | 35.09% | 0.22% |
| Jan. 2, 2024 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | A | Employee Stock Option (right to buy) | 5971000 | $0.00 | 5,971,000.0000 | 5,397,597 | 9999.99% | 100.00% |
| Jan. 2, 2024 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | A | Common Stock | 4654100 | $0.00 | 4,916,056.0000 | 5,397,597 | 1776.67% | 86.23% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Common Stock | 282800 | $2.06 | 261,956.0000 | 5,101,459 | 51.91% | 5.54% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 1000000 | $0.00 | 0.0000 | 5,101,459 | 100.00% | 19.60% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 330000 | $0.00 | 0.0000 | 5,101,459 | 100.00% | 6.47% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 400000 | $0.31 | 0.0000 | 5,101,459 | 100.00% | 7.84% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 600000 | $0.00 | 0.0000 | 5,101,459 | 100.00% | 11.76% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 75000 | $0.00 | 0.0000 | 5,101,459 | 100.00% | 1.47% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 670000 | $0.00 | 0.0000 | 5,101,459 | 100.00% | 13.13% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 163000 | $0.00 | 0.0000 | 5,101,459 | 100.00% | 3.20% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 1056100 | $0.00 | 0.0000 | 5,101,459 | 100.00% | 20.70% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Employee Stock Option (right to buy) | 1275000 | $0.93 | 0.0000 | 5,101,459 | 100.00% | 24.99% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Common Stock | 55000 | $2.06 | 728,081.0000 | 5,101,459 | 7.02% | 1.08% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Common Stock | 13600 | $2.06 | 714,481.0000 | 5,101,459 | 1.87% | 0.27% |
| Nov. 13, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | D | Common Stock | 169725 | $2.06 | 544,756.0000 | 5,101,459 | 23.76% | 3.33% |
| Sept. 25, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | S | Common Stock | 2932 | $1.06 | 783,081.0000 | 5,101,459 | 0.37% | 0.06% |
| Jan. 4, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | S | Common Stock | 27549 | $1.13 | 799,534.0000 | 5,101,459 | 3.33% | 0.54% |
| Jan. 4, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | S | Common Stock | 48 | $1.15 | 799,486.0000 | 5,101,459 | 0.01% | 0.00% |
| Jan. 5, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | S | Common Stock | 77 | $1.12 | 786,013.0000 | 5,101,459 | 0.01% | 0.00% |
| Jan. 5, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | S | Common Stock | 13396 | $1.13 | 786,090.0000 | 5,101,459 | 1.68% | 0.26% |
| Jan. 2, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | A | Employee Stock Option (right to buy) | 1275000 | $0.00 | 1,275,000.0000 | 5,101,459 | 9999.99% | 24.99% |
| Jan. 2, 2023 | Cartesian Therapeutics, Inc. | $RNAC | Brunn Carsten | President and CEO | A | Common Stock | 282800 | $0.00 | 827,083.0000 | 5,101,459 | 51.96% | 5.54% |