SELB Insider Trading
Cartesian Therapeutics, Inc. | Pharmaceutical Preparations
Comprehensive Trading Performance Summary
The investment history of corporate insiders at Cartesian Therapeutics, Inc. provides a unique lens into the internal conviction of the company's leadership. By analyzing SEC Form 4 filings, investors can track how directors and officers are allocating their own capital. High-conviction buying often signals that management believes the current market price significantly undervalues future growth prospects, while strategic selling might occur for personal liquidity or portfolio diversification. Monitoring these shifts in ownership is essential for understanding the alignment between management and shareholders in the Pharmaceutical Preparations sector.
Transactions on Chart
Open Full Chart| Filing Date | Trade Date | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After | Change, % |
|---|---|---|---|---|---|---|---|---|---|
| 2020-06-03 23:42 | 2020-06-02 | Brunn Carsten | Director, Officer - President and CEO | OPT+S | $3.86 | 3,253 | $12,557 | 86,162 | 0.0% |
| 2020-03-20 00:16 | 2020-03-17 | BARABE TIMOTHY C | Director | BUY | $2.00 | 5,000 | $10,000 | 88,173 | +6.0% |
| 2020-03-04 00:25 | 2020-03-03 | Brunn Carsten | Director, Officer - President and CEO | OPT+S | $3.86 | 3,374 | $13,011 | 78,477 | 0.0% |
| 2019-12-04 00:20 | 2019-12-02 | Brunn Carsten | Director, Officer - President and CEO | OPT+S | $1.53 | 14,272 | $21,809 | 70,914 | 0.0% |
| 2019-08-16 23:18 | 2019-08-14 | SPRINGER TIMOTHY A | Director, 10% owner | BUY | $1.74 | 10,000 | $17,415 | 86,418 | +13.1% |
| 2019-08-15 23:19 | 2019-08-13 | BARABE TIMOTHY C | Director | BUY | $1.72 | 10,000 | $17,200 | 17,492 | +133.5% |
| 2019-03-29 23:17 | 2019-01-25 | Farokhzad Omid | Director | BUY | $1.50 | 83,333 | $125,000 | 83,333 | +100.0% |
| 2019-03-29 23:15 | 2017-11-10 | SPRINGER TIMOTHY A | Director | BUY | $1.51 | 4,071,418 | $6,142,955 | 76,418 | +100.0% |
| 2019-01-30 00:37 | 2019-01-25 | Nashat Amir | Director | BUY | $1.50 | 1,166,666 | $1,749,999 | 2,676,234 | +77.3% |
| 2017-11-22 00:08 | 2017-11-17 | Sands Earl | Officer - Chief Medical Officer | BUY | $10.26 | 7,500 | $76,967 | 7,500 | +100.0% |
| 2017-11-17 01:14 | 2017-11-14 | SPRINGER TIMOTHY A | Director | BUY | $9.27 | 57,598 | $534,095 | 461,349 | +14.3% |
| 2017-11-15 05:58 | 2017-11-14 | Abraham David | Officer - GC, CCO & Corporate Secretary | BUY | $9.25 | 5,405 | $49,996 | 5,405 | +100.0% |
| 2017-11-15 05:57 | 2017-11-13 | CAUTREELS WERNER | Director, Officer - President and CEO | BUY | $9.31 | 20,000 | $186,250 | 321,203 | +6.6% |
| 2017-11-14 02:18 | 2017-11-09 | BARABE TIMOTHY C | Director | BUY | $9.37 | 5,000 | $46,840 | 7,492 | +200.6% |
| 2017-11-14 02:19 | 2017-11-09 | SPRINGER TIMOTHY A | Director | BUY | $9.19 | 53,338 | $490,438 | 403,751 | +15.2% |
| 2017-09-29 00:10 | 2017-09-26 | Nashat Amir | Director | SELL | $18.91 | 70,226 | $1,328,079 | 1,550,478 | -4.3% |
| 2017-09-27 00:19 | 2017-09-22 | Nashat Amir | Director | SELL | $19.13 | 79,211 | $1,515,663 | 1,618,242 | -4.7% |
| 2017-09-23 00:30 | 2017-09-20 | Siewers David | Officer - CFO and Treasurer | OPT+S | $20.00 | 16,424 | $328,480 | 0 | 0.0% |
| 2017-09-22 23:09 | 2017-09-20 | Nashat Amir | Director | SELL | $19.91 | 147,187 | $2,930,214 | 1,694,676 | -8.0% |
| 2017-07-10 23:19 | 2017-06-15 | Johnston Lloyd P. | Officer - COO and SVP, R&D | OPT+S | $17.04 | 10,512 | $179,141 | 1,606 | 0.0% |
| 2017-07-06 23:05 | 2017-07-03 | Johnston Lloyd P. | Officer - COO and SVP, R*D | OPT+S | $19.10 | 5,959 | $113,807 | 1,606 | 0.0% |
| 2017-07-05 23:06 | 2017-06-30 | Siewers David | Officer - Chief Financial Officer | OPT+S | $20.00 | 7,420 | $148,405 | 0 | 0.0% |
| 2017-06-30 23:33 | 2017-06-29 | Siewers David | Officer - Chief Financial Officer | OPT+S | $20.00 | 9,652 | $193,042 | 0 | 0.0% |
| 2017-06-28 23:35 | 2017-06-27 | Keller Peter | Officer - Chief Business Officer | OPT+S | $19.30 | 4,595 | $88,681 | 405 | 0.0% |
| 2017-06-28 23:35 | 2017-06-26 | Siewers David | Officer - Chief Financial Officer | SELL | $20.00 | 6,886 | $137,720 | 36 | -99.5% |
| 2017-06-28 23:36 | 2017-06-27 | SPRINGER TIMOTHY A | Director | BUY | $17.71 | 338,791 | $5,999,989 | 355,413 | +2,038.2% |
| 2017-06-19 23:12 | 2017-06-15 | Johnston Lloyd P. | Officer, 10% owner - COO and SVP, R*D | OPT+S | $17.00 | 20,512 | $348,640 | 1,606 | 0.0% |
| 2017-05-19 23:06 | 2017-05-17 | SPRINGER TIMOTHY A | Director | BUY | $14.00 | 16,104 | $225,524 | 16,104 | +100.0% |
| 2017-05-17 00:28 | 2017-05-16 | KANIA EDWIN M JR | Director | SELL | $14.00 | 266,795 | $3,735,130 | 560,067 | -32.3% |
| 2017-04-19 00:18 | 2017-04-17 | Johnston Lloyd P. | Officer - COO AND SVP, R&D | OPT+S | $13.95 | 13,205 | $184,210 | 1,606 | 0.0% |
| 2017-01-31 00:54 | 2017-01-23 | Johnston Lloyd P. | Officer - COO AND SVP, R&D | OPT+S | $14.01 | 15,000 | $210,107 | 1,606 | 0.0% |
| 2016-12-31 02:07 | 2016-12-28 | Kishimoto Takashi Kei | Officer - Chief Scientific Officer | OPT+S | $17.55 | 10,000 | $175,500 | 0 | 0.0% |
| 2016-12-23 22:19 | 2016-12-21 | Abraham David | Officer - CCO, Gen.Counsel, Corp.Sec. | OPT+S | $18.00 | 14,844 | $267,192 | 0 | 0.0% |
| 2016-12-22 03:14 | 2016-12-19 | Keller Peter | Officer - Chief Business Officer | SELL | $18.58 | 4,723 | $87,753 | 405 | -92.1% |
| 2016-06-29 23:47 | 2016-06-27 | Osage University Partners II, L.P. | 10% owner | BUY | $14.00 | 350,000 | $4,900,000 | 862,543 | +68.3% |
| 2016-06-29 23:46 | 2016-06-27 | Nanodimension Management Ltd | 10% owner | BUY | $14.00 | 385,000 | $5,390,000 | 1,045,957 | +58.2% |
| 2016-06-29 23:45 | 2016-06-27 | Nashat Amir | Director, 10% owner | BUY | $14.00 | 150,000 | $2,100,000 | 1,836,703 | +8.9% |
| 2016-06-30 01:14 | 2016-06-27 | RUSNANO | 10% owner | BUY | $14.00 | 107,143 | $1,500,002 | 157,009 | +214.9% |
| 2016-06-29 23:44 | 2016-06-27 | Polaris Venture Management Co. V, L.L.C. | 10% owner | BUY | $14.00 | 150,000 | $2,100,000 | 1,836,703 | +8.9% |
| 2016-06-29 23:49 | 2016-06-27 | GORDON CARL L | Director, 10% owner | BUY | $14.00 | 550,000 | $7,700,000 | 1,825,415 | +43.1% |
| 2016-06-30 03:55 | 2016-06-27 | ORBIMED ADVISORS LLC | Director, 10% owner | BUY | $14.00 | 550,000 | $7,700,000 | 1,825,415 | +43.1% |
| 2016-06-29 23:45 | 2016-06-27 | TAS Partners, LLC | Director | BUY | $14.00 | 710,000 | $9,940,000 | 1,237,028 | +134.7% |
How to Interpret $SELB Trades
Not every insider transaction in Cartesian Therapeutics, Inc. is a signal for immediate action. Professional investors look for "cluster buying"—when multiple executives simultaneously purchase $SELB shares on the open market. It is crucial to distinguish between scheduled sales (under Rule 10b5-1) and voluntary increases in ownership, which demonstrate management’s true conviction that the stock is undervalued.
Data Source & Accuracy for SELB
Insider activity data for Cartesian Therapeutics, Inc. is streamed in real-time directly from the SEC EDGAR system. We analyze raw Form 4 filings, filtering out technical adjustments and complex derivative transactions. This provides a transparent view of how ownership structure is evolving in $SELB, allowing you to follow the capital of those with the most intimate knowledge of the company.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.