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 22, 2007 involved selling 700 shares valued at $55.7K.
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 22, 2007, when they sold 700 shares at $79.55 per share.
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| $79.53 |
| Discretionary |
| Feb 22, 2007 | CLB | $151.1K | Sale | 1,900 | $79.52 | Discretionary |
| Feb 22, 2007 | CLB | $63.6K | Sale | 800 | $79.51 | Discretionary |
| Feb 22, 2007 | CLB | $739.4K | Sale | 9,300 | $79.50 | Discretionary |
| Feb 22, 2007 | CLB | $238.5K | Sale | 3,000 | $79.49 | Discretionary |
| Feb 22, 2007 | CLB | $8.0K | Sale | 100 | $80.47 | Discretionary |
| Feb 22, 2007 | CLB | $8.0K | Sale | 100 | $80.41 | Discretionary |
| Feb 22, 2007 | CLB | $88.1K | Sale | 1,100 | $80.06 | Discretionary |
| Feb 22, 2007 | CLB | $16.1K | Sale | 200 | $80.28 | Discretionary |
| Feb 22, 2007 | CLB | $240.8K | Sale | 3,000 | $80.25 | Discretionary |
| Feb 22, 2007 | CLB | $8.0K | Sale | 100 | $80.22 | Discretionary |
| Feb 22, 2007 | CLB | $40.1K | Sale | 500 | $80.20 | Discretionary |
| Feb 22, 2007 | CLB | $8.0K | Sale | 100 | $80.19 | Discretionary |
| Feb 22, 2007 | CLB | $32.1K | Sale | 400 | $80.13 | Discretionary |
| Feb 22, 2007 | CLB | $8.0K | Sale | 100 | $80.12 | Discretionary |
| Feb 22, 2007 | CLB | $16.0K | Sale | 200 | $80.11 | Discretionary |
| Feb 22, 2007 | CLB | $464.6K | Sale | 5,800 | $80.10 | Discretionary |
| Feb 22, 2007 | CLB | $80.1K | Sale | 1,000 | $80.09 | Discretionary |
| Feb 22, 2007 | CLB | $16.0K | Sale | 200 | $80.08 | Discretionary |
| Feb 22, 2007 | CLB | $64.1K | Sale | 800 | $80.07 | Discretionary |
| Feb 22, 2007 | CLB | $576.4K | Sale | 7,200 | $80.05 | Discretionary |
| Feb 22, 2007 | CLB | $160.1K | Sale | 2,000 | $80.04 | Discretionary |
| Feb 22, 2007 | CLB | $104.0K | Sale | 1,300 | $80.03 | Discretionary |
| Feb 22, 2007 | CLB | $16.0K | Sale | 200 | $80.02 | Discretionary |
| Feb 22, 2007 | CLB | $248.0K | Sale | 3,100 | $80.01 | Discretionary |
| Feb 22, 2007 | CLB | $1.5M | Sale | 18,900 | $80.00 | Discretionary |
| Feb 22, 2007 | CLB | $112.0K | Sale | 1,400 | $79.99 | Discretionary |
| Feb 22, 2007 | CLB | $8.0K | Sale | 100 | $79.98 | Discretionary |
| Feb 22, 2007 | CLB | $40.0K | Sale | 500 | $79.95 | Discretionary |