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 100 shares valued at $10.3K.
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 100 shares at $103.18 per share.
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| $103.17 |
| Discretionary |
| Aug 17, 2007 | CLB | $82.5K | Sale | 800 | $103.10 | Discretionary |
| Aug 17, 2007 | CLB | $10.4K | Sale | 100 | $104.22 | Discretionary |
| Aug 17, 2007 | CLB | $31.2K | Sale | 300 | $104.15 | Discretionary |
| Aug 17, 2007 | CLB | $62.9K | Sale | 604 | $104.20 | Discretionary |
| Aug 15, 2007 | CLB | $414.4K | Sale | 4,000 | $103.60 | Discretionary |
| Aug 15, 2007 | CLB | $62.1K | Sale | 600 | $103.54 | Discretionary |
| Aug 15, 2007 | CLB | $621.0K | Sale | 6,000 | $103.50 | Discretionary |
| Aug 15, 2007 | CLB | $206.9K | Sale | 2,000 | $103.45 | Discretionary |
| Aug 15, 2007 | CLB | $103.4K | Sale | 1,000 | $103.44 | Discretionary |
| Aug 15, 2007 | CLB | $82.7K | Sale | 800 | $103.41 | Discretionary |
| Aug 15, 2007 | CLB | $20.7K | Sale | 200 | $103.40 | Discretionary |
| Aug 15, 2007 | CLB | $148.1K | Sale | 1,400 | $105.75 | Discretionary |
| Aug 15, 2007 | CLB | $10.6K | Sale | 100 | $105.50 | Discretionary |
| Aug 15, 2007 | CLB | $147.1K | Sale | 1,400 | $105.04 | Discretionary |
| Aug 15, 2007 | CLB | $62.3K | Sale | 600 | $103.75 | Discretionary |
| Aug 15, 2007 | CLB | $103.7K | Sale | 1,000 | $103.65 | Discretionary |
| Aug 15, 2007 | CLB | $621.3K | Sale | 6,000 | $103.55 | Discretionary |
| Aug 15, 2007 | CLB | $41.4K | Sale | 400 | $103.56 | Discretionary |
| Aug 14, 2007 | CLB | $295.6K | Sale | 2,700 | $109.50 | Discretionary |
| Aug 14, 2007 | CLB | $21.9K | Sale | 200 | $109.27 | Discretionary |
| Aug 14, 2007 | CLB | $338.7K | Sale | 3,100 | $109.25 | Discretionary |
| Aug 14, 2007 | CLB | $1.7K | Sale | 16 | $109.23 | Discretionary |
| Aug 14, 2007 | CLB | $10.9K | Sale | 100 | $109.21 | Discretionary |
| Aug 14, 2007 | CLB | $65.5K | Sale | 600 | $109.20 | Discretionary |
| Feb 22, 2007 | CLB | $24.0K | Sale | 300 | $79.87 | Discretionary |
| Feb 22, 2007 | CLB | $151.7K | Sale | 1,900 | $79.86 | Discretionary |
| Feb 22, 2007 | CLB | $39.9K | Sale | 500 | $79.85 | Discretionary |
| Feb 22, 2007 | CLB | $16.0K | Sale | 200 | $79.84 | Discretionary |