David R Walt - Net Worth and Insider Trading
David R Walt Net Worth
The estimated net worth of David R Walt is at least $74 Million dollars as of 2025-07-19. David R Walt is the Director of Illumina Inc and owns about 668,800 shares of Illumina Inc (ILMN) stock worth over $64 Million. David R Walt is the Director of Quanterix Corp and owns about 1,866,933 shares of Quanterix Corp (QTRX) stock worth over $10 Million. David R Walt is also the Director of Exicure Inc and owns about 13,725 shares of Exicure Inc (XCUR) stock worth over $108,771. Details can be seen in David R Walt'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 David R Walt has not made any transactions after 2025-06-13 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of David R Walt
David R Walt Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, David R Walt owns 4 companies in total, including Exicure Inc (XCUR) , Quanterix Corp (QTRX) , and Dare Bioscience Inc (DARE) among others .
Click here to see the complete history of David R Walt’s form 4 insider trades.
Insider Ownership Summary of David R Walt
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| XCUR | Exicure Inc | 2020-03-13 | director |
| QTRX | Quanterix Corp | 2025-06-13 | director |
| DARE | Dare Bioscience Inc | 2015-09-23 | director |
 | | 2016-04-07 | director |
David R Walt Latest Holdings Summary
David R Walt currently owns a total of 3 stocks. Among these stocks, David R Walt owns 668,800 shares of Illumina Inc (ILMN) as of April 7, 2016, with a value of $64 Million and a weighting of 86.38%. David R Walt owns 1,866,933 shares of Quanterix Corp (QTRX) as of June 13, 2025, with a value of $10 Million and a weighting of 13.47%. David R Walt also owns 13,725 shares of Exicure Inc (XCUR) as of March 13, 2020, with a value of $108,771 and a weighting of 0.15%.
Latest Holdings of David R Walt
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| ILMN | Illumina Inc | 2016-04-07 | 668,800 | 96.14 | 64,298,432 |
| QTRX | Quanterix Corp | 2025-06-13 | 1,866,933 | 5.37 | 10,025,430 |
| XCUR | Exicure Inc | 2020-03-13 | 13,725 | 7.93 | 108,771 |
Holding Weightings of David R Walt
David R Walt Form 4 Trading Tracker
According to the SEC Form 4 filings, David R Walt has made a total of 0 transactions in Illumina Inc (ILMN) over the past 5 years. The most-recent trade in Illumina Inc is the sale of 4,000 shares on April 7, 2016, which brought David R Walt around $675,600.
According to the SEC Form 4 filings, David R Walt has made a total of 4 transactions in Quanterix Corp (QTRX) over the past 5 years, including 4 buys and 0 sells. The most-recent trade in Quanterix Corp is the acquisition of 160,000 shares on June 13, 2025, which cost David R Walt around $985,600.
According to the SEC Form 4 filings, David R Walt has made a total of 0 transactions in Exicure Inc (XCUR) over the past 5 years. The most-recent trade in Exicure Inc is the acquisition of 1,940 shares on March 13, 2020, which cost David R Walt around $352,190.
Insider Trading History of David R Walt
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David R Walt Trading Performance
GuruFocus tracks the stock performance after each of David R Walt's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by David R Walt is 31.37%. GuruFocus also compares David R Walt's trading performance to market benchmark return within the same time period. The performance of stocks bought by David R Walt within 3 months outperforms 3 times out of 6 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how David R Walt's insider trading performs compared to the benchmark.
Performance of David R Walt
Average Return
Outperforming Transactions
| 1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
|---|---|---|---|---|---|---|
| Return(%) | 14.45 | | | | | |
| Relative Return to S&P 500(%) | 12.56 | | | | | |
David R Walt Ownership Network
Ownership Network List of David R Walt
Ownership Network Relation of David R Walt
David R Walt Owned Company Details
What does Exicure Inc do?
Who are the key executives at Exicure Inc?
David R Walt is the director of Exicure Inc. Other key executives at Exicure Inc include 10 percent owner Dgp Co., Ltd. , director & Chief Executive Officer & CFO Jung Sang Kim , and director & Chief Executive Officer & CFO Josh Miller .
Exicure Inc (XCUR) Insider Trades Summary
Over the past 18 months, David R Walt made no insider transaction in Exicure Inc (XCUR). Other recent insider transactions involving Exicure Inc (XCUR) include a net sale of 3,162,777 shares made by Dgp Co., Ltd. , and a net purchase of 2,900,000 shares made by .
In summary, during the past 3 months, insiders sold 0 shares of Exicure Inc (XCUR) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 680,000 shares of Exicure Inc (XCUR) were sold and 3,137,223 shares were bought by its insiders, resulting in a net purchase of 2,457,223 shares.
Exicure Inc (XCUR)'s detailed insider trading history can be found in Insider Trading Tracker table.
Exicure Inc Insider Transactions
David R Walt Mailing Address
Above is the net worth, insider trading, and ownership report for David R Walt. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, David R Walt's mailing address is: San Diego Ca 92122.
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