David M. Demshur serves as Executive at CORE LABORATORIES N V, where they oversee executive responsibilities. Since joining the company, David M. Demshur has executed 327 insider transactions totaling $86.3M, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 28, 2008 involved selling 1,192 shares valued at $148.8K.
David M. Demshur currently holds 365,844 shares of CORE LABORATORIES N V (CLB), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, David M. Demshur has been a net seller of CLB stock. They have purchased $0 and sold $86.3M worth of shares.
David M. Demshur's most recent insider trade was on Feb 28, 2008, when they sold 1,192 shares at $124.80 per share.
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| $124.78 |
| Discretionary |
| Feb 28, 2008 | CLB | $149.7K | Sale | 1,200 | $124.77 | Discretionary |
| Feb 28, 2008 | CLB | $25.0K | Sale | 200 | $124.76 | Discretionary |
| Feb 28, 2008 | CLB | $187.1K | Sale | 1,500 | $124.75 | Discretionary |
| Feb 28, 2008 | CLB | $87.3K | Sale | 700 | $124.74 | Discretionary |
| Feb 28, 2008 | CLB | $124.7K | Sale | 1,000 | $124.73 | Discretionary |
| Feb 28, 2008 | CLB | $12.5K | Sale | 100 | $124.72 | Discretionary |
| Feb 28, 2008 | CLB | $62.4K | Sale | 500 | $124.70 | Discretionary |
| Feb 28, 2008 | CLB | $62.3K | Sale | 500 | $124.62 | Discretionary |
| Feb 28, 2008 | CLB | $12.5K | Sale | 100 | $124.61 | Discretionary |
| Feb 28, 2008 | CLB | $12.5K | Sale | 100 | $124.58 | Discretionary |
| Feb 28, 2008 | CLB | $44.8K | Sale | 360 | $124.57 | Discretionary |
| Feb 28, 2008 | CLB | $37.4K | Sale | 300 | $124.53 | Discretionary |
| Feb 28, 2008 | CLB | $62.3K | Sale | 500 | $124.52 | Discretionary |
| Feb 28, 2008 | CLB | $12.5K | Sale | 100 | $124.51 | Discretionary |
| Feb 28, 2008 | CLB | $176.9K | Sale | 1,421 | $124.50 | Discretionary |
| Feb 28, 2008 | CLB | $49.8K | Sale | 400 | $124.42 | Discretionary |
| Feb 28, 2008 | CLB | $62.2K | Sale | 500 | $124.41 | Discretionary |
| Feb 28, 2008 | CLB | $1.2M | Sale | 9,487 | $124.40 | Discretionary |
| Feb 28, 2008 | CLB | $265.6K | Sale | 2,139 | $124.15 | Discretionary |
| Feb 28, 2008 | CLB | $840.6K | Sale | 6,725 | $125.00 | Discretionary |
| Feb 28, 2008 | CLB | $37.5K | Sale | 300 | $124.91 | Discretionary |
| Feb 28, 2008 | CLB | $137.8K | Sale | 1,100 | $125.25 | Discretionary |
| Feb 28, 2008 | CLB | $62.6K | Sale | 500 | $125.23 | Discretionary |
| Feb 28, 2008 | CLB | $12.5K | Sale | 100 | $125.22 | Discretionary |
| Feb 28, 2008 | CLB | $25.0K | Sale | 200 | $125.21 | Discretionary |
| Feb 28, 2008 | CLB | $244.1K | Sale | 1,950 | $125.20 | Discretionary |
| Feb 28, 2008 | CLB | $62.6K | Sale | 500 | $125.19 | Discretionary |
| Feb 28, 2008 | CLB | $25.0K | Sale | 200 | $125.17 | Discretionary |