Mark P Long - Net Worth and Insider Trading

Mark P Long Net Worth

The estimated net worth of Mark P Long is at least $10 Million dollars as of 2025-07-25. Mark P Long is the Pres WD Capital, CSO & CFO of Western Digital Corp and owns about 141,221 shares of Western Digital Corp (WDC) stock worth over $10 Million. Details can be seen in Mark P Long'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 Mark P Long has not made any transactions after 2019-03-12 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

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Transaction Summary of Mark P Long

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Mark P Long Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Mark P Long owns 3 companies in total, including Prime Impact Acquisition I (PRIUF) , Western Digital Corp (WDC) , and Prime Impact Acquisition I (PRIAF) .

Click here to see the complete history of Mark P Long’s form 4 insider trades.

Insider Ownership Summary of Mark P Long

Ticker Company Transaction Date Type of Owner
PRIUF Prime Impact Acquisition I 2020-09-09 director & Co-Chief Exec. Officer and CFO
WDC Western Digital Corp 2019-03-12 EVP & Corporate Development
PRIAF Prime Impact Acquisition I 2020-09-09 director & Co-Chief Exec. Officer and CFO

Mark P Long Latest Holdings Summary

Mark P Long currently owns a total of 1 stock. Mark P Long owns 141,221 shares of Western Digital Corp (WDC) as of March 12, 2019, with a value of $10 Million.

Latest Holdings of Mark P Long

Ticker Company Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
WDC Western Digital Corp 2019-03-12 141,221 69.31 9,787,321

Holding Weightings of Mark P Long


Mark P Long Form 4 Trading Tracker

According to the SEC Form 4 filings, Mark P Long has made a total of 0 transactions in Western Digital Corp (WDC) over the past 5 years. The most-recent trade in Western Digital Corp is the sale of 17,623 shares on March 12, 2019, which brought Mark P Long around $881,150.

Insider Trading History of Mark P Long

No transactions are available. GuruFocus only tracks and displays the purchase and sale of non-derivative security in open market or private transactions from SEC filings with the transaction code of P or S.
Total 0
  • 1
Only the transactions in Open Market or Private Sale at the market prices are included. Other transactions such as conversion of derivative security or exercise of options are not included. Insiders are limited to only officers and/or directors of the company.

Mark P Long Trading Performance

Please note GuruFocus will not track the insiders’ transaction performance if he/she does not have buying transactions.

Mark P Long Ownership Network

Ownership Network List of Mark P Long

No Data

Ownership Network Relation of Mark P Long

Insider Network Chart


Mark P Long Owned Company Details

What does Prime Impact Acquisition I do?

Who are the key executives at Prime Impact Acquisition I?

Mark P Long is the director & Co-Chief Exec. Officer and CFO of Prime Impact Acquisition I. Other key executives at Prime Impact Acquisition I include 10 percent owner Frank Brosens , 10 percent owner Taconic Capital Advisors Uk Llp , and 10 percent owner Taconic Capital Advisors Lp .

Prime Impact Acquisition I (PRIUF) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Prime Impact Acquisition I (PRIUF) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Prime Impact Acquisition I (PRIUF) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Prime Impact Acquisition I (PRIUF)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Prime Impact Acquisition I Insider Transactions

No Available Data

Mark P Long Mailing Address

Above is the net worth, insider trading, and ownership report for Mark P Long. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Mark P Long's mailing address is: San Jose Ca 95119.