RNAC insider buying – Cartesian Therapeutics, Inc.
12 insider purchases since 2016 worth $17.0M by 2 different insiders. Last 12 months: 1 purchases, $205,800. Most recent filing: 2025-12-08.
Small company Public float $109M (latest 10-K, SEC). Share prices of small companies usually swing much more than those of large ones, in both directions, and are easier to move with little trading.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| SPRINGER TIMOTHY A Director | $16.7M 10× · 2,181,087 sh | 2024-01-17 2025-04-09 | – | 9,633,493 shares as of 2026-01-06 | Holds - never sold |
| BARABE TIMOTHY C Director | $301,050 2× · 37,500 sh | 2024-08-12 2025-12-04 | – | 56,966 shares as of 2026-01-06 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 0 | – | – | 2 | $234,315 |
| 2025 | 4 | $3.5M | 2 | 3 | $505,528 |
| 2024 | 8 | $13.5M | 2 | 5 | $4.2M |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2025-12-08 | BARABE TIMOTHY C | Director | 30,000 | $6.86 | $205,800 | +123.1% | SEC |
| 2025-04-11 | SPRINGER TIMOTHY A | Director | 149,075 | $10.21 | $1.5M | +1.8% | SEC |
| 2025-03-20 | SPRINGER TIMOTHY A | Director | 89,863 | $15.26 | $1.4M | +1.1% | SEC |
| 2025-01-15 | SPRINGER TIMOTHY A | Director | 20,967 | $17.47 | $366,353 | +0.2% | SEC |
| 2024-12-23 | SPRINGER TIMOTHY A | Director | 52,189 | $18.49 | $965,005 | +0.6% | SEC |
| 2024-11-18 | SPRINGER TIMOTHY A | Director | 431,940 | $17.07 | $7.4M | +5.4% | SEC |
| 2024-10-04 | SPRINGER TIMOTHY A | Director | 205,721 | $20.87 | $4.3M | +2.6% | SEC |
| 2024-08-14 | SPRINGER TIMOTHY A | Director | 8,016 | $12.72 | $101,964 | +229.5% | SEC |
| 2024-08-14 | BARABE TIMOTHY C | Director | 7,500 | $12.70 | $95,250 | +52.6% | SEC |
| 2024-03-28 | SPRINGER TIMOTHY A | Director | 18,400 | $0.62 | $11,412 | +21.3% | SEC |
| 2024-03-20 | SPRINGER TIMOTHY A | Director | 19,044 | $0.60 | $11,426 | +0.1% | SEC |
| 2024-03-18 | SPRINGER TIMOTHY A | Director | 1,185,872 | $0.56 | $667,246 | +4.0% | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-01-08 | Davis Blaine | CFO | 10,591 | $6.82 | $72,231 | Sale | SEC |
| 2026-01-08 | Brunn Carsten | CEO | 23,766 | $6.82 | $162,084 | Sale | SEC |
| 2025-01-07 | Kurtoglu Metin | Officer | 4,875 | $16.78 | $81,780 | Sale | SEC |
| 2025-01-07 | Davis Blaine | CFO | 7,989 | $16.78 | $134,019 | Sale | SEC |
| 2025-01-07 | Brunn Carsten | CEO | 17,271 | $16.78 | $289,729 | Sale | SEC |
| 2024-12-11 | Kurtoglu Metin | Officer | 13,664 | $25.26 | $345,100 | Sale | SEC |
| 2024-11-21 | Kurtoglu Metin | Officer | 38,689 | $16.78 | $649,070 | Sale | SEC |
| 2024-11-18 | Miljkovic Milos | Officer | 55,000 | $16.50 | $907,350 | Sale | SEC |
| 2024-11-18 | Kurtoglu Metin | Officer | 82,368 | $17.46 | $1.4M | Sale | SEC |
| 2024-11-18 | Jewell Christopher M | Officer | 52,115 | $16.79 | $875,026 | Sale | SEC |
Recent company events (SEC 8-K)
- 2026-11-05 - Quarterly results released (SEC)
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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