The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) by Demshur David M since 2006.
The trader's CIK number is 1282547.
At the time of the last reporting, Demshur David M was the President & CEO of Core Laboratories N V. (stock ticker symbol CLB).
Also see all insider trading activities at Core Laboratories N V.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2019 | CLB | 0 | $0 | 0 | $0 | 59,100 | $0 |
| 2018 | CLB | 0 | $0 | 0 | $0 | 52,995 | $0 |
| 2017 | CLB | 0 | $0 | 0 | $0 | 44,085 | $0 |
| 2016 | CLB | 0 | $0 | 0 | $0 | 39,892 | $0 |
| 2015 | CLB | 0 | $0 | 0 | $0 | 29,218 | $0 |
| 2014 | CLB | 0 | $0 | 0 | $0 | 29,835 | $0 |
| 2013 | CLB | 0 | $0 | 0 | $0 | 30,635 | $0 |
| 2012 | CLB | 0 | $0 | 0 | $0 | 27,600 | $0 |
| 2011 | CLB | 0 | $0 | 200,000 | $21,878,804 | 0 | $0 |
| 2010 | CLB | 0 | $0 | 250,000 | $26,138,416 | 0 | $0 |
| 2009 | CLB | 0 | $0 | 100,000 | $10,746,000 | 0 | $0 |
| 2008 | CLB | 0 | $0 | 100,000 | $12,347,849 | 0 | $0 |
| 2007 | CLB | 0 | $0 | 169,634 | $15,217,535 | 595,000 | $7,955,925 |
| 2006 | CLB | 0 | $0 | 0 | $0 | 45,500 | $46,062 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2019-12-31 | CLB | Option Ex | 59,100 | .00 | 0 |
| 2018-12-31 | CLB | Option Ex | 52,995 | .00 | 0 |
| 2017-12-29 | CLB | Option Ex | 44,085 | .00 | 0 |
| 2016-12-30 | CLB | Option Ex | 19,946 | .00 | 0 |
| 2016-12-30 | CLB | Option Ex | 19,946 | .00 | 0 |
| 2015-12-31 | CLB | Option Ex | 29,218 | .00 | 0 |
| 2014-12-31 | CLB | Option Ex | 29,835 | .00 | 0 |
| 2013-12-31 | CLB | Option Ex | 30,635 | .00 | 0 |
| 2012-12-31 | CLB | Option Ex | 27,600 | .00 | 0 |
| 2011-07-25 | CLB | Sale | 29,256 | 110.98 | 3,246,713 |
| 2011-07-26 | CLB | Sale | 127,814 | 109.35 | 13,976,333 |
| 2011-07-27 | CLB | Sale | 42,930 | 108.45 | 4,655,758 |
| 2010-07-29 | CLB | Sale | 63,259 | 76.36 | 4,830,330 |
| 2010-07-30 | CLB | Sale | 36,741 | 75.96 | 2,790,736 |
| 2010-02-16 | CLB | Sale | 150,000 | 123.45 | 18,517,350 |
| 2009-10-29 | CLB | Sale | 100,000 | 107.46 | 10,746,000 |
| 2008-02-29 | CLB | Sale | 26,733 | 122.04 | 3,262,415 |
| 2008-02-29 | CLB | Sale | 14,045 | 122.91 | 1,726,284 |
| 2008-02-28 | CLB | Sale | 33,124 | 124.68 | 4,129,900 |
| 2008-02-28 | CLB | Sale | 16,876 | 125.12 | 2,111,609 |
| 2008-02-29 | CLB | Sale | 9,222 | 121.19 | 1,117,641 |
| 2007-08-17 | CLB | Sale | 23,904 | 102.58 | 2,452,000 |
| 2007-08-17 | CLB | Sale | 13,514 | 103.53 | 1,399,144 |
| 2007-08-15 | CLB | Sale | 25,500 | 103.94 | 2,650,419 |
| 2007-08-14 | CLB | Sale | 6,716 | 109.28 | 733,897 |
| 2007-02-22 | CLB | Sale | 29,400 | 79.66 | 2,342,121 |
| 2007-02-22 | CLB | Sale | 52,600 | 80.08 | 4,212,050 |
| 2007-02-22 | CLB | Sale | 18,000 | 79.33 | 1,427,904 |
| 2007-02-21 | CLB | Option Ex | 555,000 | 14.34 | 7,955,925 |
| 2007-01-31 | CLB | Option Ex | 40,000 | .00 | 0 |
| 2006-05-01 | CLB | Option Ex | 5,500 | 8.38 | 46,062 |
| 2006-01-17 | CLB | Option Ex | 40,000 | .00 | 0 |
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 Demshur David M (President & CEO of Core Laboratories N V at the time of this reporting) see the Securities and Exchange Commission (SEC) website.