| 2018-05-09 | PARKER DRILLING CO /DE/ | M | +62.5K sh | $0.61 | +$38.1K | 267,360 |
| 2018-05-09 | PARKER DRILLING CO /DE/ | F | −4,091 sh | $0.61 | −$2,495.51 | 263,269 |
| 2018-05-09 | PARKER DRILLING CO /DE/ | M | −62.5K sh | — | — | 0 |
| 2017-05-10 | PARKER DRILLING CO /DE/ | M | +39.4K sh | $1.55 | +$61K | 207,391 |
| 2017-05-10 | PARKER DRILLING CO /DE/ | F | −2,531 sh | $1.55 | −$3,923.05 | 204,860 |
| 2017-05-10 | PARKER DRILLING CO /DE/ | M | −39.4K sh | — | — | 62,500 |
| 2017-05-09 | PARKER DRILLING CO /DE/ | A | +62.5K sh | — | — | 101,870 |
| 2017-02-24 | PARKER DRILLING CO /DE/ | P | ▲+160K sh | $1.90 | ▲+$304K | 168,021 |
| 2016-09-01 | PARKER DRILLING CO /DE/ | M | +8,902 sh | $2.15 | +$19.1K | 8,902 |
| 2016-09-01 | PARKER DRILLING CO /DE/ | F | −2,967 sh | $2.15 | −$6,379.05 | 5,935 |
| 2016-09-01 | PARKER DRILLING CO /DE/ | M | −8,902 sh | — | — | 39,370 |
| 2016-09-01 | PARKER DRILLING CO /DE/ | F | −881 sh | $2.15 | −$1,894.15 | 8,021 |
| 2016-05-10 | PARKER DRILLING CO /DE/ | A | +39.4K sh | — | — | 48,272 |
| 2015-09-01 | PARKER DRILLING CO /DE/ | A | +8,902 sh | — | — | 8,902 |
| 2013-10-01 | Weatherford International Ltd./Switzerland | A | +2,585 sh | — | — | 601,337 |
| 2013-07-01 | Weatherford International Ltd./Switzerland | A | +2,801 sh | — | — | 598,752 |
| 2013-04-01 | Weatherford International Ltd./Switzerland | A | +5,175 sh | — | — | 595,951 |
| 2013-03-07 | Weatherford International Ltd./Switzerland | A | +430K sh | — | — | 429,923 |
| 2013-01-02 | Weatherford International Ltd./Switzerland | A | +3,384 sh | — | — | 590,776 |
| 2012-10-01 | Weatherford International Ltd./Switzerland | A | +2,982 sh | — | — | 587,392 |
| 2012-07-02 | Weatherford International Ltd./Switzerland | A | +2,734 sh | — | — | 584,410 |
| 2012-04-02 | Weatherford International Ltd./Switzerland | A | +2,219 sh | — | — | 581,676 |
| 2012-03-23 | Weatherford International Ltd./Switzerland | A | +200K sh | — | — | 550,036 |
| 2012-03-23 | Weatherford International Ltd./Switzerland | A | +100K sh | — | — | 100,211 |
| 2012-03-23 | Weatherford International Ltd./Switzerland | A | +100K sh | — | — | 100,210 |
| 2012-01-03 | Weatherford International Ltd./Switzerland | A | +2,166 sh | — | — | 341,851 |
| 2011-10-03 | Weatherford International Ltd./Switzerland | A | +1,880 sh | — | — | 339,685 |
| 2011-07-01 | Weatherford International Ltd./Switzerland | A | +1,983 sh | — | — | 337,805 |
| 2011-04-01 | Weatherford International Ltd./Switzerland | A | +6,693 sh | — | — | 335,822 |
| 2011-02-15 | Weatherford International Ltd./Switzerland | A | +113K sh | — | — | 329,129 |
| 2011-02-15 | Weatherford International Ltd./Switzerland | A | +113K sh | — | — | 113,064 |
| 2011-01-03 | Weatherford International Ltd./Switzerland | A | +1,215 sh | — | — | 216,065 |
| 2010-10-01 | Weatherford International Ltd./Switzerland | A | +1,436 sh | — | — | 214,850 |
| 2010-07-01 | Weatherford International Ltd./Switzerland | A | +1,336 sh | — | — | 213,414 |
| 2010-05-07 | Weatherford International Ltd./Switzerland | F | −2,645 sh | $16.14 | −$42.7K | 212,078 |
| 2010-04-01 | Weatherford International Ltd./Switzerland | A | +1,219 sh | — | — | 215,046 |
| 2010-04-01 | Weatherford International Ltd./Switzerland | F | −323 sh | $15.86 | −$5,122.78 | 214,723 |
| 2010-03-18 | Weatherford International Ltd./Switzerland | A | 0 sh | — | — | 0 |
| 2010-03-18 | Weatherford International Ltd./Switzerland | A | +147K sh | — | — | 147,232 |
| 2010-01-04 | Weatherford International Ltd./Switzerland | A | +1,146 sh | — | — | 214,202 |
| 2010-01-04 | Weatherford International Ltd./Switzerland | F | −375 sh | $17.91 | −$6,716.25 | 213,827 |
| 2009-10-01 | Weatherford International Ltd./Switzerland | A | +990 sh | — | — | 153,318 |
| 2009-10-01 | Weatherford International Ltd./Switzerland | F | −262 sh | $20.73 | −$5,431.26 | 153,056 |