| Jan 8, 2019 SForm 4 → | Jan 9, 3:52 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 2,500 | $18.20 | $45,500 | 10,964 | −18.6% | plan? |
| Jan 8, 2019 MForm 4 → | Jan 9, 3:52 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 2,500 | $8.00 | $20,000 | 13,464 | — | plan? |
| Dec 31, 2018 FForm 4 → | Jan 3, 2019, 4:46 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 44,935 | $1.09 | $48,979 | 1,113,291 | — | plan? |
| May 15, 2018 PForm 4 → | May 16, 5:30 pm EDT | FLOTEK INDUSTRIES INC/CN/FTK | 33,600 | $3.41 | $114,552 | 1,158,226 | +2.99% | plan? |
| Mar 28, 2018 SForm 4 → | Mar 28, 4:57 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 4,511 | $23.20 | $104,655 | 10,964 | −29.2% | plan? |
| Mar 23, 2018 SForm 4 → | Mar 27, 6:09 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 16,429 | $24.13 | $396,463 | 15,475 | −51.5% | plan? |
| Mar 16, 2018 AForm 4 → | Mar 20, 4:39 pm EDT | FLOTEK INDUSTRIES INC/CN/FTK | 96,750 | $6.13 | $593,078 | 1,124,626 | — | plan? |
| Mar 15, 2018 AForm 4 → | Mar 19, 1:43 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 4,072 | $24.55 | $99,968 | 31,904 | — | plan? |
| Jan 16, 2018 AForm 4 → | Jan 30, 4:53 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 170,834 | $5.85 | $999,379 | 1,027,876 | — | plan? late |
| Dec 31, 2017 FForm 4 → | Jan 3, 2018, 5:32 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 24,181 | $4.66 | $112,683 | 857,042 | — | plan? |
| Dec 27, 2017 SForm 4 → | Dec 29, 2:55 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 3,900 | $26.05 | $101,595 | 27,832 | −12.3% | plan? |
| Dec 27, 2017 AForm 4 → | Dec 29, 2:55 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 5,000 | $20.05 | $100,225 | 29,232 | — | plan? |
| Apr 6, 2017 FForm 4/A → | Apr 11, 4:08 pm EDT | FLOTEK INDUSTRIES INC/CN/FTK | 321,945 | $12.59 | $4,053,288 | 881,223 | — | plan? |
| Apr 6, 2017 FMForm 4 → | Apr 10, 4:06 pm EDT | FLOTEK INDUSTRIES INC/CN/FTK | 721,522 | $10.71 | $7,723,962 | 881,646 | — | plan? amended |
| Mar 23, 2017 AForm 4 → | Mar 27, 4:42 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 3,992 | $25.05 | $100,000 | 26,732 | — | plan? |
| Dec 31, 2016 FForm 4 → | Jan 4, 2017, 4:39 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 68,242 | $9.39 | $640,792 | 803,168 | — | plan? |
| Dec 29, 2016 SForm 4 → | Jan 3, 2017, 2:25 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 1,100 | $31.76 | $34,936 | 22,740 | −4.61% | plan? |
| Dec 29, 2016 MForm 4 → | Jan 3, 2017, 2:25 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 2,500 | $13.90 | $34,750 | 23,840 | — | plan? |
| Apr 6, 2016 AForm 4 → | Apr 8, 7:20 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 5,884 | $20.39 | $119,975 | 22,164 | — | plan? |
| Jan 26, 2016 AForm 4 → | Jan 28, 4:15 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 176,826 | $5.81 | $1,027,359 | 871,410 | — | plan? |
| Dec 31, 2015 FForm 4 → | Jan 4, 2016, 4:19 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 31,152 | $11.44 | $356,379 | 694,584 | — | plan? |
| Dec 21, 2015 FMForm 4 → | Dec 22, 4:05 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 38,853 | $10.06 | $390,670 | 725,736 | — | plan? |
| Aug 10, 2015 SForm 4 → | Aug 11, 4:13 pm EDT | FLOTEK INDUSTRIES INC/CN/FTK | 112,000 | $18.47 | $2,069,032 | 724,589 | −13.4% | plan? |
| Jun 30, 2015 FForm 4 → | May 12, 2016, 6:03 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 618 | $21.47 | $13,271 | 21,340 | — | plan? late |
| Jun 29, 2015 FMForm 4 → | Jul 1, 4:07 pm EDT | FLOTEK INDUSTRIES INC/CN/FTK | 1,042,402 | $5.16 | $5,376,689 | 836,589 | — | plan? |
| Mar 31, 2015 FForm 4 → | Jun 12, 2:05 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 206 | $19.22 | $3,959 | 16,074 | — | plan? late |
| Mar 19, 2015 AForm 4 → | Mar 23, 7:28 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 5,492 | $18.75 | $102,975 | 16,280 | — | plan? |
| Mar 9, 2015 FForm 4 → | Mar 10, 4:06 pm EDT | FLOTEK INDUSTRIES INC/CN/FTK | 5,678 | $15.79 | $89,656 | 478,991 | — | plan? |
| Feb 16, 2015 FMForm 4 → | Feb 18, 4:01 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 40,077 | $7.52 | $301,460 | 484,669 | — | plan? |
| Feb 6, 2015 FForm 4 → | Feb 9, 4:57 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 10,344 | $17.22 | $178,124 | 471,410 | — | plan? |
| Feb 3, 2015 FForm 4 → | Feb 5, 4:17 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 1,951 | $16.66 | $32,504 | 481,754 | — | plan? |
| Feb 3, 2015 FForm 4 → | Feb 3, 5:56 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 3,978 | $16.66 | $66,273 | 483,705 | — | plan? |
| Jan 26, 2015 AForm 4 → | Jan 30, 2:46 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 13,366 | $16.66 | $222,678 | 487,683 | — | plan? late |
| Jan 26, 2015 AForm 4 → | Jan 28, 6:03 pm EST | FLOTEK INDUSTRIES INC/CN/FTK | 148,516 | $16.66 | $2,474,277 | 474,317 | — | plan? |