Mark A Mccollum - Net Worth and Insider Trading
Mark A Mccollum Net Worth
The estimated net worth of Mark A Mccollum is at least $4 Million dollars as of 2025-04-28. Mark A Mccollum is the EVP - CFO of Halliburton Co and owns about 204,993 shares of Halliburton Co (HAL) stock worth over $4 Million. Details can be seen in Mark A Mccollum'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 A Mccollum has not made any transactions after 2017-02-27 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Mark A Mccollum
Mark A Mccollum Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Mark A Mccollum owns 9 companies in total, including Westlake Corp (WLK) , Weatherford International PLC (WFTLF) , and Archrock Inc (AROC) among others .
Click here to see the complete history of Mark A Mccollum’s form 4 insider trades.
Insider Ownership Summary of Mark A Mccollum
Ticker | Company | Transaction Date | Type of Owner |
---|---|---|---|
WLK | Westlake Corp | 2018-05-18 | director |
WFTLF | Weatherford International PLC | 2019-12-13 | director & President and CEO |
AROC | Archrock Inc | 2009-05-28 | director |
![]() | ![]() | 2017-02-27 | Senior VP & Chief Acctg. Off. |
![]() | ![]() | 2009-05-28 | director |
![]() | ![]() | 2006-11-15 | director |
![]() | ![]() | 2003-08-14 | other: Former officer |
![]() | ![]() | 2017-04-24 | director & President and CEO |
![]() | ![]() | 2022-12-01 | director |
Mark A Mccollum Latest Holdings Summary
Mark A Mccollum currently owns a total of 1 stock. Mark A Mccollum owns 204,993 shares of Halliburton Co (HAL) as of February 27, 2017, with a value of $4 Million.
Latest Holdings of Mark A Mccollum
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
HAL | Halliburton Co | 2017-02-27 | 204,993 | 20.85 | 4,274,104 |
Holding Weightings of Mark A Mccollum
Mark A Mccollum Form 4 Trading Tracker
According to the SEC Form 4 filings, Mark A Mccollum has made a total of 0 transactions in Halliburton Co (HAL) over the past 5 years. The most-recent trade in Halliburton Co is the sale of 89,300 shares on February 27, 2017, which brought Mark A Mccollum around $5 Million.
Insider Trading History of Mark A Mccollum
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Mark A Mccollum Trading Performance
Mark A Mccollum Ownership Network
Ownership Network List of Mark A Mccollum
Ownership Network Relation of Mark A Mccollum

Mark A Mccollum Owned Company Details
What does Westlake Corp do?
Who are the key executives at Westlake Corp?
Mark A Mccollum is the director of Westlake Corp. Other key executives at Westlake Corp include director & 10 percent owner David Tsung-hung Chao , Sr. Vice President & Vinyls Robert F. Buesinger , and Vice President/Treasurer Mark Steven Bender .
Westlake Corp (WLK) Insider Trades Summary
Over the past 18 months, Mark A Mccollum made no insider transaction in Westlake Corp (WLK). Other recent insider transactions involving Westlake Corp (WLK) include a net sale of 11,715 shares made by Robert F. Buesinger , a net sale of 14,608 shares made by Mark Steven Bender , and a net sale of 3,500 shares made by David Tsung-hung Chao .
In summary, during the past 3 months, insiders sold 0 shares of Westlake Corp (WLK) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 29,823 shares of Westlake Corp (WLK) were sold and 0 shares were bought by its insiders, resulting in a net sale of 29,823 shares.
Westlake Corp (WLK)'s detailed insider trading history can be found in Insider Trading Tracker table.
Westlake Corp Insider Transactions
Mark A Mccollum Mailing Address
Above is the net worth, insider trading, and ownership report for Mark A Mccollum. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Mark A Mccollum's mailing address is: Houston Tx 77002.