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 Aug 17, 2007 involved selling 200 shares valued at $20.6K.
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 Aug 17, 2007, when they sold 200 shares at $103.05 per share.
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| $103.04 |
| Discretionary |
| Aug 17, 2007 | CLB | $61.8K | Sale | 600 | $103.03 | Discretionary |
| Aug 17, 2007 | CLB | $72.1K | Sale | 700 | $103.02 | Discretionary |
| Aug 17, 2007 | CLB | $91.0K | Sale | 883 | $103.01 | Discretionary |
| Aug 17, 2007 | CLB | $414.2K | Sale | 4,021 | $103.00 | Discretionary |
| Aug 17, 2007 | CLB | $144.1K | Sale | 1,400 | $102.96 | Discretionary |
| Aug 17, 2007 | CLB | $10.3K | Sale | 100 | $102.95 | Discretionary |
| Aug 17, 2007 | CLB | $20.6K | Sale | 200 | $102.83 | Discretionary |
| Aug 17, 2007 | CLB | $143.9K | Sale | 1,400 | $102.82 | Discretionary |
| Aug 17, 2007 | CLB | $10.3K | Sale | 100 | $102.81 | Discretionary |
| Aug 17, 2007 | CLB | $10.3K | Sale | 100 | $102.80 | Discretionary |
| Aug 17, 2007 | CLB | $51.4K | Sale | 500 | $102.79 | Discretionary |
| Aug 17, 2007 | CLB | $214.8K | Sale | 2,100 | $102.30 | Discretionary |
| Aug 17, 2007 | CLB | $30.7K | Sale | 300 | $102.26 | Discretionary |
| Aug 17, 2007 | CLB | $204.5K | Sale | 2,000 | $102.25 | Discretionary |
| Aug 17, 2007 | CLB | $30.7K | Sale | 300 | $102.23 | Discretionary |
| Aug 17, 2007 | CLB | $51.1K | Sale | 500 | $102.22 | Discretionary |
| Aug 17, 2007 | CLB | $10.2K | Sale | 100 | $102.21 | Discretionary |
| Aug 17, 2007 | CLB | $71.5K | Sale | 700 | $102.20 | Discretionary |
| Aug 17, 2007 | CLB | $10.2K | Sale | 100 | $102.11 | Discretionary |
| Aug 17, 2007 | CLB | $10.2K | Sale | 100 | $102.10 | Discretionary |
| Aug 17, 2007 | CLB | $183.7K | Sale | 1,800 | $102.05 | Discretionary |
| Aug 17, 2007 | CLB | $91.8K | Sale | 900 | $102.04 | Discretionary |
| Aug 17, 2007 | CLB | $10.2K | Sale | 100 | $102.03 | Discretionary |
| Aug 17, 2007 | CLB | $81.6K | Sale | 800 | $102.00 | Discretionary |
| Aug 17, 2007 | CLB | $20.8K | Sale | 200 | $104.21 | Discretionary |
| Aug 17, 2007 | CLB | $103.9K | Sale | 1,000 | $103.90 | Discretionary |
| Aug 17, 2007 | CLB | $20.8K | Sale | 200 | $103.75 | Discretionary |
| Aug 17, 2007 | CLB | $41.5K | Sale | 400 | $103.65 | Discretionary |