David G Dewalt - Net Worth and Insider Trading
David G Dewalt Net Worth
The estimated net worth of David G Dewalt is at least $162 Million dollars as of 2023-11-30. David G Dewalt is the Executive Chairman of Mandiant Inc and owns about 4,797,447 shares of Mandiant Inc (MNDT) stock worth over $110 Million. David G Dewalt is the EVP & Pres. Cust Ops & CM Soft of EMC Corp and owns about 934,637 shares of EMC Corp (EMC) stock worth over $23 Million. David G Dewalt is also the Director of Five9 Inc and owns about 199,497 shares of Five9 Inc (FIVN) stock worth over $15 Million. Besides these, David G Dewalt also holds ForeScout Technologies Inc (FSCT) , Polycom Inc (PLCM) . Details can be seen in David G Dewalt's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the assumption that David G Dewalt has not made any transactions after 2022-03-04 and currently still holds the listed stock(s).
Transaction Summary of David G Dewalt
David G Dewalt Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, David G Dewalt owns 8 companies in total, including ForeScout Technologies Inc () , Delta Air Lines Inc () , and Five9 Inc () among others .
Click here to see the complete history of David G Dewalt’s form 4 insider trades.
Insider Ownership Summary of David G Dewalt
Ticker | Comapny | Transaction Date | Type of Owner |
---|---|---|---|
ForeScout Technologies Inc | 2020-08-17 | director | |
Delta Air Lines Inc | 2011-11-22 | director | |
Five9 Inc | 2022-03-04 | director | |
Mandiant Inc | 2017-01-03 | director & Chief Executive Officer | |
Polycom Inc | 2013-05-16 | director | |
Jive Software Inc | 2011-12-12 | director | |
EMC Corp | 2007-02-05 | EVP & Pres. Cust Ops & CM Soft | |
NightDragon Acquisition Corp | 2021-03-01 | director & 10 percent owner |
David G Dewalt Latest Holdings Summary
David G Dewalt currently owns a total of 5 stocks. Among these stocks, David G Dewalt owns 4,797,447 shares of Mandiant Inc (MNDT) as of January 3, 2017, with a value of $110 Million and a weighting of 67.91%. David G Dewalt owns 934,637 shares of EMC Corp (EMC) as of January 29, 2007, with a value of $23 Million and a weighting of 14.12%. David G Dewalt also owns 199,497 shares of Five9 Inc (FIVN) as of March 4, 2022, with a value of $15 Million and a weighting of 9.32%. The other 2 stocks ForeScout Technologies Inc (FSCT) , Polycom Inc (PLCM) have a combined weighting of 8.65% among all his current holdings.
Latest Holdings of David G Dewalt
Ticker | Comapny | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
MNDT | Mandiant Inc | 2017-01-03 | 4,797,447 | 22.98 | 110,245,332 |
EMC | EMC Corp | 2007-01-29 | 934,637 | 24.53 | 22,926,646 |
FIVN | Five9 Inc | 2022-03-04 | 199,497 | 75.80 | 15,121,873 |
FSCT | ForeScout Technologies Inc | 2020-02-11 | 442,748 | 28.99 | 12,835,265 |
PLCM | Polycom Inc | 2012-10-31 | 96,420 | 12.47 | 1,202,357 |
Holding Weightings of David G Dewalt
David G Dewalt Form 4 Trading Tracker
According to the SEC Form 4 filings, David G Dewalt has made a total of 0 transactions in Mandiant Inc (MNDT) over the past 5 years. The most-recent trade in Mandiant Inc is the sale of 151,644 shares on January 3, 2017, which brought David G Dewalt around $2 Million.
According to the SEC Form 4 filings, David G Dewalt has made a total of 0 transactions in EMC Corp (EMC) over the past 5 years. The most-recent trade in EMC Corp is the sale of 250,000 shares on January 29, 2007, which brought David G Dewalt around $4 Million.
According to the SEC Form 4 filings, David G Dewalt has made a total of 2 transactions in Five9 Inc (FIVN) over the past 5 years, including 0 buys and 2 sells. The most-recent trade in Five9 Inc is the sale of 40,000 shares on March 4, 2022, which brought David G Dewalt around $4 Million.
More details on David G Dewalt's insider transactions can be found in the Insider Trading History of David G Dewalt table.Insider Trading History of David G Dewalt
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David G Dewalt Trading Performance
GuruFocus tracks the stock performance after each of David G Dewalt's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by David G Dewalt is -44.57%. GuruFocus also compares David G Dewalt's trading performance to market benchmark return within the same time period. The performance of stocks bought by David G Dewalt within 3 months outperforms 0 times out of 1 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how David G Dewalt's insider trading performs compared to the benchmark.
Performance of David G Dewalt
Average Relative Return
Outperforming Transactions
1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
---|---|---|---|---|---|---|
Relative Return(%) | -11.67 | -44.57 | -45.66 | -48.22 | -22 | -7.64 |
Relative Return to S&P 500(%) | -11.31 | -34.13 | -43.66 | -47.55 | -33.08 | -17.12 |
David G Dewalt Ownership Network
Ownership Network List of David G Dewalt
Ownership Network Relation of David G Dewalt
David G Dewalt Owned Company Details

What does ForeScout Technologies Inc do?
Who are the key executives at ForeScout Technologies Inc?
David G Dewalt is the director of ForeScout Technologies Inc. Other key executives at ForeScout Technologies Inc include SVP & GC & Corp Compliance Ofcr Darren J. Milliken , Chief Operating Officer Nicholas R Noviello , and 10 percent owner Arthur C Patterson .
ForeScout Technologies Inc () Insider Trades Summary
In summary, during the past 3 months, insiders sold 0 shares of ForeScout Technologies Inc () in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of ForeScout Technologies Inc () were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.
ForeScout Technologies Inc ()'s detailed insider trading history can be found in Insider Trading Tracker table.
ForeScout Technologies Inc Insider Transactions
David G Dewalt Mailing Address
Above is the net worth, insider trading, and ownership report for David G Dewalt. Currently GuruFocus does not have mailing address information for David G Dewalt.