Carsten Brunn
CIK 1760229 · President and CEO · last filed 2026-01-08
Carsten Brunn is a President and CEO who has filed 39 SEC Form 4 insider transactions across 3 companies since 2018. The most recent filing shows the insider sold $162.1K of RNAC on Jan 8, 2026. Across all open-market trades the lifetime net is −$836.5K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.1M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$3.08M
3
39
-$836.5K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RNAC | President and CEO | 323,530 | $9.51 | $3.08M | -$451.8K | 6 | 2026-01-08 |
| Cartesian Therapeutics, Inc. (SELB) Delisted | President and CEO | 783,081 | $0.88 | $690.1K | -$384.6K | 32 | 2023-09-26 |
| Surface Oncology, Inc. (SURF) Delisted | Director | — | $1.07 | — | $0 | 1 | 2022-06-30 |
Recent Filings
39 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-01-08 | RNAC | Sell (S) | −23,766 | -$162.1K | EDGAR |
| 2026-01-06 | RNAC | Grant (A) | +143,200 | $0 | EDGAR |
| 2025-01-07 | RNAC | Sell (S) | −17,271 | -$289.8K | EDGAR |
| 2025-01-06 | RNAC | Grant (A) | +57,500 | $0 | EDGAR |
| 2024-01-04 | RNAC | Grant (A) | +4,654,100 | $0 | EDGAR |
| 2023-11-15 | RNAC | Disp (D) | −521,125 | -$1.07M | EDGAR |
| 2023-09-26 | Cartesian Therapeutics, Inc. (SELB) Delisted | Sell (S) | −2,932 | -$3.1K | EDGAR |
| 2023-01-06 | Cartesian Therapeutics, Inc. (SELB) Delisted | Sell (S) | −41,070 | -$46.5K | EDGAR |
| 2023-01-04 | Cartesian Therapeutics, Inc. (SELB) Delisted | Grant (A) | +282,800 | $0 | EDGAR |
| 2022-12-07 | Cartesian Therapeutics, Inc. (SELB) Delisted | Sell (S) | −4,522 | -$6.0K | EDGAR |