- Corporate Officers - M
- Mccollum Mark A
Insider Trading History of Mccollum Mark A
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Mccollum Mark A since 2017.
This trader's CIK number is 1215888.
At the time of last reporting, Mccollum Mark A was the Officer of Seadrill Ltd. (stock ticker symbol SDRL).
Also see all insider trading activities at Seadrill Ltd.
Note that in the past
MCCOLLUM MARK A also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Seadrill Ltd (SDRL) by Mccollum Mark A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2026 | SDRL | 0 | $0 | 0 | $0 | 4,860 | $0 |
| 2025 | SDRL | 0 | $0 | 0 | $0 | 2,409 | $0 |
Yearly summary of insider trading at Westlake Corp (WLK) by Mccollum Mark A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | WLK | 0 | $0 | 0 | $0 | 1,128 | $0 |
| 2024 | WLK | 0 | $0 | 0 | $0 | 1,136 | $0 |
| 2023 | WLK | 0 | $0 | 0 | $0 | 1,446 | $0 |
| 2022 | WLK | 0 | $0 | 0 | $0 | 1,763 | $0 |
| 2021 | WLK | 0 | $0 | 0 | $0 | 2,400 | $0 |
| 2020 | WLK | 0 | $0 | 0 | $0 | 2,387 | $0 |
| 2019 | WLK | 0 | $0 | 0 | $0 | 2,396 | $0 |
Yearly summary of insider trading at Halliburton Co (HAL) by Mccollum Mark A
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2017 | HAL | 0 | $0 | 89,300 | $4,760,047 | 89,300 | $3,154,343 |
Insider trading activities at 3 companies by Mccollum Mark A:
1. Seadrill Ltd (SDRL)
2. Westlake Corp (WLK)
3. Halliburton Co (HAL)
Table 1. Insider trading of Seadrill Ltd (SDRL) by Mccollum Mark A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2026-05-14 | SDRL | Option Ex | 4,860 | .00 | 0 |
| 2025-04-17 | SDRL | Option Ex | 2,409 | .00 | 0 |
Table 2. Insider trading of Westlake Corp (WLK) by Mccollum Mark A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-08-09 | WLK | Option Ex | 1,128 | .00 | 0 |
| 2024-08-11 | WLK | Option Ex | 1,136 | .00 | 0 |
| 2023-08-12 | WLK | Option Ex | 1,446 | .00 | 0 |
| 2022-08-13 | WLK | Option Ex | 1,763 | .00 | 0 |
| 2021-08-14 | WLK | Option Ex | 2,400 | .00 | 0 |
| 2020-08-16 | WLK | Option Ex | 2,387 | .00 | 0 |
| 2019-08-17 | WLK | Option Ex | 1,409 | .00 | 0 |
| 2019-05-18 | WLK | Option Ex | 987 | .00 | 0 |
Table 3. Insider trading of Halliburton Co (HAL) by Mccollum Mark A
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2017-02-27 | HAL | Option Ex | 89,300 | 35.32 | 3,154,343 |
| 2017-02-27 | HAL | Sale | 89,300 | 53.30 | 4,760,047 |
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above table cannot be completely guaranteed as to their accuracy.
For more information regarding the trades made by Mccollum Mark A
(Officer of Seadrill Ltd at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.