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Mark Mccollum Insider Profile

4 Followers
Mark Mccollum, EVP & CFO at Halliburton, holds 2.57K shares in Oneok (Ticker: OKE), holds 7.27K shares in Seadrill Limited (Ticker: SDRL), holds 9.66K shares in Westlake Corporation (Ticker: WLK).
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Mark Mccollum

Mark Mccollum
Halliburton (HAL)
EVP & CFO

Not Ranked
Mark Mccollum has not reported sufficient informative transactions and therefore cannot be ranked.
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$12M
64.68%
22.51%
6.81%
2.78%
3.22% Others
A breakdown of Mark Mccollum's holdings
See the Top Stocks by Insiders

Insider Roles

Halliburton
(HAL)
EVP & CFO
Archrock
(AROC)
Director
Westlake Corporation
(WLK)
Director
Seadrill Limited
(SDRL)
Director
+3 other positions
Roles that Mark Mccollum holds in companies
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Most Profitable Insider Trade

Currently, no data available
The most profitable trade made by Mark Mccollum
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Mark Mccollum's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
HAL
Halliburton
Mar 01, 2017
EVP & CFO
Uninformative Buy
3.10M
$7.96M
WLK
Westlake Corporation
Aug 11, 2025
Director
Uninformative Buy
89.11K
$838.43K
WFRD
Weatherford International
Dec 17, 2019
President and CEO, Director
Uninformative Buy
20.57K
$180.44K
MRO
Marathon Oil
Nov 22, 2024
―
Uninformative Sell
―
$0.00
SDRL
Seadrill Limited
May 18, 2026
Director
Uninformative Buy
249.66K
$342.88K
OKE
Oneok
May 22, 2026
Director
Uninformative Buy
170.02K
$215.89K
AROC
Archrock
Apr 27, 2018
Director
Uninformative Buy
―
$2.77M
APLP
Archrock Partners LP
Jan 23, 2009
―
Uninformative Buy
―
$30.60K
KBR
KBR
―
Director
―
$0.00
List of latest transactions for each holding click on a transaction to see Mark Mccollum's performance on stock
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Mark Mccollum insider profile FAQ

What is the percentage of profitable transactions made by Mark Mccollum?
The percentage of profitable transactions made by Mark Mccollum is ―.
    What is the average return per transaction made by Mark Mccollum?
    The average return per transaction made by Mark Mccollum is ―.
      What stocks does Mark Mccollum hold?
      Mark Mccollum holds: HAL, WLK, WFRD, MRO, SDRL, OKE, AROC, APLP, KBR stocks.
        What was Mark Mccollum’s latest transaction?
        Mark Mccollum latest transaction was an Uninformative Buy of $170.02K.
          What was Mark Mccollum's most profitable transaction?
          Mark Mccollum’s most profitable transaction was an Uninformative Buy of stock on ―. The return on the trade was ―.
            What is Mark Mccollum's role in Halliburton?
            Mark Mccollum's role in Halliburton is EVP & CFO.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.