Thomas L Kempner - Net Worth and Insider Trading
Thomas L Kempner Net Worth
The estimated net worth of Thomas L Kempner is at least $94 Million dollars as of 2025-04-26. Thomas L Kempner is the Director of Dyax Corp and owns about 1,597,203 shares of Dyax Corp (DYAX) stock worth over $61 Million. Thomas L Kempner is the Director, 10% Owner of Intersections Inc and owns about 8,970,640 shares of Intersections Inc (INTX) stock worth over $33 Million. Thomas L Kempner is also the Director of FuelCell Energy Inc and owns about 239 shares of FuelCell Energy Inc (FCEL) stock worth over $913. Details can be seen in Thomas L Kempner's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Thomas L Kempner has not made any transactions after 2015-11-20 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Thomas L Kempner
Thomas L Kempner Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Thomas L Kempner owns 4 companies in total, including Intersections Inc (INTX) , Dyax Corp (DYAX) , and FuelCell Energy Inc (FCEL) among others .
Click here to see the complete history of Thomas L Kempner’s form 4 insider trades.
Insider Ownership Summary of Thomas L Kempner
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| INTX | Intersections Inc | 2018-05-30 | director & 10 percent owner |
| DYAX | Dyax Corp | 2016-01-22 | other: Former director |
| FCEL | FuelCell Energy Inc | 2010-06-25 | director |
 | | 2008-12-03 | director & 10 percent owner |
Thomas L Kempner Latest Holdings Summary
Thomas L Kempner currently owns a total of 3 stocks. Among these stocks, Thomas L Kempner owns 1,597,203 shares of Dyax Corp (DYAX) as of September 10, 2015, with a value of $61 Million and a weighting of 65.08%. Thomas L Kempner owns 8,970,640 shares of Intersections Inc (INTX) as of November 20, 2015, with a value of $33 Million and a weighting of 34.92%. Thomas L Kempner also owns 239 shares of FuelCell Energy Inc (FCEL) as of June 25, 2010, with a value of $913 and a weighting of 0%.
Latest Holdings of Thomas L Kempner
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| DYAX | Dyax Corp | 2015-09-10 | 1,597,203 | 38.41 | 61,348,567 |
| INTX | Intersections Inc | 2015-11-20 | 8,970,640 | 3.67 | 32,922,249 |
| FCEL | FuelCell Energy Inc | 2010-06-25 | 239 | 3.82 | 913 |
Holding Weightings of Thomas L Kempner
Thomas L Kempner Form 4 Trading Tracker
According to the SEC Form 4 filings, Thomas L Kempner has made a total of 0 transactions in Dyax Corp (DYAX) over the past 5 years. The most-recent trade in Dyax Corp is the sale of 6,000 shares on September 10, 2015, which brought Thomas L Kempner around $134,820.
According to the SEC Form 4 filings, Thomas L Kempner has made a total of 0 transactions in Intersections Inc (INTX) over the past 5 years. The most-recent trade in Intersections Inc is the acquisition of 2,000,000 shares on November 20, 2015, which cost Thomas L Kempner around $5 Million.
According to the SEC Form 4 filings, Thomas L Kempner has made a total of 0 transactions in FuelCell Energy Inc (FCEL) over the past 5 years. The most-recent trade in FuelCell Energy Inc is the acquisition of 116 shares on June 25, 2010, which cost Thomas L Kempner around $625,000.
Insider Trading History of Thomas L Kempner
- 1
Thomas L Kempner Trading Performance
GuruFocus tracks the stock performance after each of Thomas L Kempner's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Thomas L Kempner is 6.59%. GuruFocus also compares Thomas L Kempner's trading performance to market benchmark return within the same time period. The performance of stocks bought by Thomas L Kempner within 3 months outperforms 4 times out of 8 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how Thomas L Kempner's insider trading performs compared to the benchmark.
Performance of Thomas L Kempner
Average Return
Outperforming Transactions
| 1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
|---|---|---|---|---|---|---|
| Return(%) | 18.51 | | | | | |
| Relative Return to S&P 500(%) | 16.16 | | | | | |
Thomas L Kempner Ownership Network
Ownership Network List of Thomas L Kempner
Ownership Network Relation of Thomas L Kempner
Thomas L Kempner Owned Company Details
What does Intersections Inc do?
Who are the key executives at Intersections Inc?
Thomas L Kempner is the director & 10 percent owner of Intersections Inc. Other key executives at Intersections Inc include 10 percent owner General Catalyst Group Management, Llc , 10 percent owner Hemant Taneja , and 10 percent owner Joel E Cutler .
Intersections Inc (INTX) Insider Trades Summary
In summary, during the past 3 months, insiders sold 0 shares of Intersections Inc (INTX) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Intersections Inc (INTX) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.
Intersections Inc (INTX)'s detailed insider trading history can be found in Insider Trading Tracker table.
Intersections Inc Insider Transactions
Thomas L Kempner Mailing Address
Above is the net worth, insider trading, and ownership report for Thomas L Kempner. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Thomas L Kempner's mailing address is: New York Ny 10004.
We'd love to learn more about your experiences on GuruFocus.com and how we can improve!
Take Survey
