| 2010-01-19 | PIONEER ENERGY SERVICES LLC | S | ▼−200K sh | $9.78 | ▼−$1.96M | 5,292,108 |
| 2010-01-15 | PIONEER ENERGY SERVICES LLC | S | ▼−100K sh | $9.52 | ▼−$952K | 5,492,108 |
| 2010-01-14 | PIONEER ENERGY SERVICES LLC | S | ▼−100K sh | $9.56 | ▼−$956K | 5,592,108 |
| 2010-01-13 | PIONEER ENERGY SERVICES LLC | S | ▼−100K sh | $9.44 | ▼−$944K | 5,692,108 |
| 2010-01-12 | PIONEER ENERGY SERVICES LLC | S | ▼−88.6K sh | $9.65 | ▼−$855K | 5,792,108 |
| 2010-01-11 | PIONEER ENERGY SERVICES LLC | S | ▼−9,900 sh | $9.67 | ▼−$95.7K | 5,880,708 |
| 2010-01-08 | PIONEER ENERGY SERVICES LLC | S | ▼−108K sh | $9.57 | ▼−$1.03M | 5,890,608 |
| 2010-01-07 | PIONEER ENERGY SERVICES LLC | S | ▼−212K sh | $9.43 | ▼−$2M | 5,998,408 |
| 2010-01-06 | PIONEER ENERGY SERVICES LLC | S | ▼−230K sh | $9.16 | ▼−$2.11M | 6,210,608 |
| 2010-01-05 | PIONEER ENERGY SERVICES LLC | S | ▼−245K sh | $8.47 | ▼−$2.08M | 6,440,608 |
| 2010-01-04 | PIONEER ENERGY SERVICES LLC | S | ▼−26.4K sh | $8.10 | ▼−$214K | 6,686,008 |
| 2009-12-31 | PIONEER ENERGY SERVICES LLC | S | ▼−11.8K sh | $8.13 | ▼−$95.9K | 6,712,408 |
| 2009-12-30 | PIONEER ENERGY SERVICES LLC | S | ▼−10.4K sh | $8.10 | ▼−$84.2K | 6,724,208 |
| 2009-12-29 | PIONEER ENERGY SERVICES LLC | S | ▼−89K sh | $8.13 | ▼−$724K | 6,734,608 |
| 2009-12-28 | PIONEER ENERGY SERVICES LLC | S | ▼−81.1K sh | $8.12 | ▼−$659K | 6,823,608 |
| 2009-12-24 | PIONEER ENERGY SERVICES LLC | S | ▼−8,100 sh | $8.12 | ▼−$65.8K | 6,904,708 |
| 2009-12-23 | PIONEER ENERGY SERVICES LLC | S | ▼−77.8K sh | $8.11 | ▼−$631K | 6,912,808 |
| 2009-10-21 | PIONEER ENERGY SERVICES LLC | S | ▼−36.6K sh | $8.18 | ▼−$299K | 6,990,608 |
| 2009-10-20 | PIONEER ENERGY SERVICES LLC | S | ▼−83.3K sh | $8.11 | ▼−$676K | 7,027,208 |
| 2009-10-19 | PIONEER ENERGY SERVICES LLC | S | ▼−101K sh | $8.15 | ▼−$824K | 7,110,508 |
| 2009-10-16 | PIONEER ENERGY SERVICES LLC | S | ▼−11.6K sh | $8.15 | ▼−$94.5K | 7,211,608 |
| 2009-10-15 | PIONEER ENERGY SERVICES LLC | S | ▼−37.3K sh | $8.15 | ▼−$304K | 7,223,208 |
| 2009-10-14 | PIONEER ENERGY SERVICES LLC | S | ▼−19.7K sh | $8.02 | ▼−$158K | 7,260,508 |
| 2009-10-12 | PIONEER ENERGY SERVICES LLC | S | ▼−75.5K sh | $8.03 | ▼−$606K | 7,280,208 |
| 2009-10-09 | PIONEER ENERGY SERVICES LLC | S | ▼−4,800 sh | $8.01 | ▼−$38.4K | 7,355,708 |
| 2009-10-08 | PIONEER ENERGY SERVICES LLC | S | ▼−45.5K sh | $7.67 | ▼−$349K | 7,360,508 |
| 2009-10-07 | PIONEER ENERGY SERVICES LLC | S | ▼−4,500 sh | $7.50 | ▼−$33.8K | 7,406,008 |
| 2009-03-06 | PIONEER ENERGY SERVICES LLC | P | ▲+152K sh | $3.96 | ▲+$601K | 7,410,508 |
| 2009-03-05 | PIONEER ENERGY SERVICES LLC | P | ▲+465K sh | $3.94 | ▲+$1.83M | 7,258,735 |
| 2009-03-04 | PIONEER ENERGY SERVICES LLC | P | ▲+586K sh | $3.99 | ▲+$2.34M | 6,794,035 |
| 2009-03-03 | PIONEER ENERGY SERVICES LLC | P | ▲+189K sh | $3.89 | ▲+$735K | 6,208,035 |
| 2009-03-02 | PIONEER ENERGY SERVICES LLC | P | ▲+152K sh | $3.91 | ▲+$594K | 6,019,024 |
| 2009-02-27 | PIONEER ENERGY SERVICES LLC | P | ▲+812K sh | $3.80 | ▲+$3.08M | 5,867,000 |
| 2005-03-29 | PIONEER ENERGY SERVICES LLC | S | ▼−6.95M sh | $12.25 | ▼−$85.1M | 723,206 |
| 2004-08-31 | PIONEER ENERGY SERVICES LLC | S | ▼−837K sh | $6.90 | ▼−$5.78M | 7,668,206 |
| 2004-08-19 | DAWSON OPERATING CO | S | ▼−12K sh | $20.12 | ▼−$241K | 554,000 |
| 2004-08-19 | DAWSON OPERATING CO | S | ▼−8,000 sh | $20.00 | ▼−$160K | 546,000 |
| 2004-08-11 | PIONEER ENERGY SERVICES LLC | S | ▼−5M sh | $6.90 | ▼−$34.5M | 8,505,508 |
| 2004-08-11 | PIONEER ENERGY SERVICES LLC | C | +6.26M sh | $4.31 | +$27M | 13,505,508 |
| 2004-08-11 | PIONEER ENERGY SERVICES LLC | C | −5.8M sh | — | — | 0 |
| 2004-08-11 | PIONEER ENERGY SERVICES LLC | C | −464K sh | — | — | 0 |
| 2004-08-04 | DAWSON OPERATING CO | S | ▼−1,500 sh | $22.00 | ▼−$33K | 571,000 |
| 2004-08-04 | DAWSON OPERATING CO | S | ▼−5,000 sh | $22.05 | ▼−$110K | 566,000 |
| 2004-08-04 | DAWSON OPERATING CO | S | ▼−3,500 sh | $22.25 | ▼−$77.9K | 572,500 |
| 2004-08-04 | DAWSON OPERATING CO | S | ▼−6,000 sh | $22.45 | ▼−$135K | 576,000 |
| 2004-08-03 | DAWSON OPERATING CO | S | ▼−10K sh | $22.66 | ▼−$227K | 662,000 |
| 2004-08-03 | DAWSON OPERATING CO | S | ▼−4,000 sh | $22.85 | ▼−$91.4K | 627,000 |
| 2004-08-03 | DAWSON OPERATING CO | S | ▼−3,500 sh | $23.00 | ▼−$80.5K | 633,500 |
| 2004-08-03 | DAWSON OPERATING CO | S | ▼−7,500 sh | $22.36 | ▼−$168K | 637,000 |
| 2004-08-03 | DAWSON OPERATING CO | S | ▼−2,500 sh | $22.29 | ▼−$55.7K | 644,500 |