| 2011-09-30 | Weatherford International Ltd./Switzerland | A | +461 sh | — | — | 20,878 |
| 2011-08-31 | Weatherford International Ltd./Switzerland | A | +417 sh | — | — | 20,417 |
| 2011-07-31 | Weatherford International Ltd./Switzerland | A | +361 sh | — | — | 19,999 |
| 2011-07-09 | Weatherford International Ltd./Switzerland | F | −3,096 sh | $18.73 | −$58K | 197,963 |
| 2011-06-30 | Weatherford International Ltd./Switzerland | A | +394 sh | — | — | 19,638 |
| 2011-05-31 | Weatherford International Ltd./Switzerland | A | +359 sh | — | — | 19,245 |
| 2011-05-07 | Weatherford International Ltd./Switzerland | F | −1,811 sh | $20.19 | −$36.6K | 201,059 |
| 2011-04-30 | Weatherford International Ltd./Switzerland | A | +333 sh | — | — | 18,885 |
| 2011-03-31 | Weatherford International Ltd./Switzerland | A | +336 sh | — | — | 18,552 |
| 2011-02-28 | Weatherford International Ltd./Switzerland | A | +2,719 sh | — | — | 18,216 |
| 2011-02-15 | Weatherford International Ltd./Switzerland | A | +35.9K sh | — | — | 202,870 |
| 2011-02-15 | Weatherford International Ltd./Switzerland | A | +35.9K sh | — | — | 35,870 |
| 2011-01-31 | Weatherford International Ltd./Switzerland | A | +245 sh | — | — | 15,498 |
| 2010-12-31 | Weatherford International Ltd./Switzerland | A | +256 sh | — | — | 15,252 |
| 2010-11-30 | Weatherford International Ltd./Switzerland | A | +295 sh | — | — | 14,996 |
| 2010-10-31 | Weatherford International Ltd./Switzerland | A | +322 sh | — | — | 14,701 |
| 2010-09-30 | Weatherford International Ltd./Switzerland | A | +336 sh | — | — | 14,379 |
| 2010-08-31 | Weatherford International Ltd./Switzerland | A | +356 sh | — | — | 14,043 |
| 2010-07-31 | Weatherford International Ltd./Switzerland | A | +364 sh | — | — | 13,687 |
| 2010-06-30 | Weatherford International Ltd./Switzerland | A | +286 sh | — | — | 13,322 |
| 2010-05-31 | Weatherford International Ltd./Switzerland | A | +261 sh | — | — | 13,037 |
| 2010-04-30 | Weatherford International Ltd./Switzerland | A | +243 sh | — | — | 12,775 |
| 2010-03-31 | Weatherford International Ltd./Switzerland | A | +246 sh | — | — | 12,532 |
| 2010-03-18 | Weatherford International Ltd./Switzerland | A | +103K sh | — | — | 103,062 |
| 2010-02-26 | Weatherford International Ltd./Switzerland | A | +238 sh | — | — | 12,286 |
| 2010-01-29 | Weatherford International Ltd./Switzerland | A | +238 sh | — | — | 12,016 |
| 2009-12-31 | Weatherford International Ltd./Switzerland | A | +262 sh | — | — | 11,778 |
| 2009-11-30 | Weatherford International Ltd./Switzerland | A | +254 sh | — | — | 11,516 |
| 2009-10-30 | Weatherford International Ltd./Switzerland | A | +226 sh | — | — | 11,262 |
| 2009-09-30 | Weatherford International Ltd./Switzerland | A | +1,254 sh | — | — | 11,574 |
| 2009-09-30 | Weatherford International Ltd./Switzerland | A | +208 sh | — | — | 10,527 |
| 2009-08-31 | Weatherford International Ltd./Switzerland | A | +230 sh | — | — | 10,320 |
| 2009-08-28 | Weatherford International Ltd./Switzerland | A | +230 sh | — | — | 10,320 |
| 2009-07-31 | Weatherford International Ltd./Switzerland | A | +238 sh | — | — | 10,090 |
| 2009-06-30 | Weatherford International Ltd./Switzerland | A | +215 sh | — | — | 10,361 |
| 2009-05-29 | Weatherford International Ltd./Switzerland | A | +221 sh | — | — | 10,145 |
| 2009-05-07 | Weatherford International Ltd./Switzerland | F | 0 sh | — | — | 154,730 |
| 2009-05-07 | Weatherford International Ltd./Switzerland | F | 0 sh | — | — | 154,730 |
| 2009-05-07 | Weatherford International Ltd./Switzerland | F | −5,850 sh | $18.95 | −$111K | 149,150 |
| 2009-04-30 | Weatherford International Ltd./Switzerland | A | +278 sh | — | — | 9,924 |
| 2009-04-30 | Weatherford International Ltd./Switzerland | A | +12K sh | — | — | 167,000 |
| 2009-04-30 | Weatherford International Ltd./Switzerland | A | +278 sh | — | — | 9,924 |
| 2009-03-31 | Weatherford International Ltd./Switzerland | A | +340 sh | — | — | 9,647 |
| 2009-02-27 | WEATHERFORD INTERNATIONAL LTD | A | +2,489 sh | — | — | 9,306 |