| Jun 8, 2026 AForm 4 → | Jun 9, 10:48 am EDT | NATURAL GAS SERVICES GROUP INCNGS | 334 | $42.42 | $14,168 | 95,137 | — | |
| Jun 5, 2026 AJForm 4 → | Jun 8, 3:26 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 6,684 | $39.87 | $88,830 | 197,818 | — | |
| Feb 14, 2019 FMForm 4 → | Feb 28, 3:27 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 22,417 | $18.04 | $23,037 | 319,385 | — | plan? late |
| Feb 5, 2019 SForm 4 → | Feb 6, 3:08 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 2,720 | $17.00 | $46,240 | 320,662 | −0.84% | plan? |
| Feb 5, 2019 MForm 4 → | Feb 6, 3:08 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 2,720 | $7.84 | $21,325 | 323,382 | — | plan? |
| Jan 31, 2019 SForm 4 → | Feb 4, 6:03 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 12,789 | $17.06 | $218,179 | 320,662 | −3.84% | plan? |
| Jan 31, 2019 MForm 4 → | Feb 4, 6:03 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 12,789 | $7.84 | $100,266 | 333,433 | — | plan? |
| Jan 28, 2019 SForm 4 → | Jan 30, 5:42 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 6,363 | $17.04 | $108,416 | 320,662 | −1.95% | plan? |
| Jan 28, 2019 MForm 4 → | Jan 30, 5:42 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 6,363 | $7.84 | $49,886 | 321,010 | — | plan? |
| Jan 23, 2019 SForm 4 → | Jan 25, 5:43 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 8,025 | $17.14 | $137,509 | 320,662 | −2.44% | plan? |
| Jan 23, 2019 MForm 4 → | Jan 25, 5:43 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 8,025 | $9.43 | $75,671 | 322,642 | — | plan? |
| Jan 17, 2019 SForm 4 → | Jan 22, 5:06 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 23,955 | $17.70 | $424,042 | 320,662 | −6.95% | plan? |
| Jan 17, 2019 MForm 4 → | Jan 22, 5:06 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 23,955 | $9.95 | $238,352 | 321,862 | — | plan? |
| Sep 6, 2018 MForm 4 → | Sep 6, 3:49 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 4,000 | $17.51 | $70,040 | 320,662 | — | plan? |
| Aug 29, 2018 SForm 4 → | Aug 31, 4:00 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 13,776 | $22.01 | $303,210 | 316,662 | −4.17% | plan? |
| Aug 29, 2018 MForm 4 → | Aug 31, 4:00 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 13,776 | $17.51 | $241,218 | 330,438 | — | plan? |
| Aug 23, 2018 SForm 4 → | Aug 27, 6:20 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 3,320 | $22.41 | $74,402 | 316,662 | −1.04% | plan? |
| Aug 23, 2018 MForm 4 → | Aug 27, 6:20 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 3,320 | $17.51 | $58,133 | 319,982 | — | plan? |
| Aug 21, 2018 SForm 4 → | Aug 23, 11:29 am EDT | NATURAL GAS SERVICES GROUP INCNGS | 2,704 | $22.02 | $59,542 | 316,662 | −0.85% | plan? |
| Aug 21, 2018 FMForm 4 → | Aug 23, 11:29 am EDT | NATURAL GAS SERVICES GROUP INCNGS | 5,104 | $18.57 | $94,783 | 319,366 | — | plan? |
| Mar 15, 2018 AForm 4 → | Mar 19, 4:42 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 56,749 | $24.55 | $1,393,188 | 316,662 | — | plan? |
| Feb 14, 2018 FMForm 4 → | Feb 16, 5:33 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 22,417 | $26.30 | $33,611 | 259,913 | — | plan? |
| Jan 6, 2018 FForm 4 → | Jan 12, 5:08 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 15,897 | $27.40 | $435,578 | 261,191 | — | plan? late |
| Dec 19, 2017 SForm 4 → | Dec 20, 7:00 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 16,212 | $25.17 | $408,056 | 277,088 | −5.53% | plan? |
| Dec 19, 2017 AForm 4 → | Dec 20, 7:00 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 16,212 | $20.06 | $325,213 | 293,300 | — | plan? |
| Oct 3, 2017 SForm 4 → | Oct 4, 6:03 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 3,874 | $28.58 | $110,719 | 277,088 | −1.38% | plan? |
| Oct 3, 2017 AForm 4 → | Oct 4, 6:03 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 3,874 | $20.06 | $77,712 | 280,962 | — | plan? |
| Jun 30, 2017 SForm 4 → | Jul 5, 1:37 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 12,000 | $24.99 | $299,928 | 277,088 | −4.15% | plan? |
| Feb 14, 2017 AForm 4/A → | Mar 15, 7:16 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 52,848 | $28.65 | $1,514,095 | 350,586 | — | plan? |
| Feb 14, 2017 AForm 4 → | Feb 15, 5:13 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 70,464 | $28.65 | $2,018,794 | 368,202 | — | plan? amended |
| Jan 11, 2017 MForm 4 → | Jan 12, 4:38 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 19,914 | $20.06 | $399,475 | 297,738 | — | plan? |
| Jan 6, 2017 FForm 4 → | Apr 28, 3:21 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 15,696 | $31.35 | $492,070 | 289,088 | — | plan? late |
| Jan 6, 2017 FForm 4 → | Mar 16, 5:40 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 15,696 | $31.35 | $492,070 | 334,890 | — | plan? late |
| Jan 3, 2017 SForm 4 → | Jan 5, 6:41 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 19,914 | $32.08 | $638,851 | 277,824 | −6.69% | plan? |
| Mar 22, 2016 SForm 4 → | Mar 24, 5:15 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 15,000 | $21.33 | $319,920 | 332,543 | −4.32% | plan? |
| Mar 22, 2016 MForm 4 → | Mar 24, 5:15 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 15,000 | $14.22 | $213,300 | 347,543 | — | plan? |
| Jan 18, 2016 FForm 4 → | May 12, 7:04 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 34,805 | $18.46 | $642,500 | 297,738 | — | plan? late |
| Jan 6, 2016 AForm 4/A → | Feb 9, 4:14 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 75,915 | $22.13 | $1,679,999 | 332,543 | — | plan? |
| Jan 6, 2016 AForm 4 → | Jan 8, 2:49 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 75,915 | $22.13 | $1,679,999 | 332,543 | — | plan? amended |
| Mar 31, 2015 SForm 4 → | Apr 1, 6:20 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 4,000 | $19.27 | $77,080 | 267,546 | −1.47% | plan? |
| Mar 30, 2015 SForm 4 → | Apr 2, 7:22 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 2,115 | $19.07 | $40,333 | 265,431 | −0.79% | plan? late |
| Mar 27, 2015 SForm 4 → | Mar 30, 6:22 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 1,000 | $19.00 | $19,000 | 271,546 | −0.37% | plan? |
| Mar 24, 2015 SForm 4 → | Mar 26, 6:14 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 2,309 | $20.06 | $46,319 | 272,546 | −0.84% | plan? |
| Mar 18, 2015 SForm 4 → | Mar 20, 9:16 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 33,256 | $18.51 | $615,582 | 286,599 | −10.4% | plan? |
| Mar 18, 2015 MForm 4 → | Mar 20, 9:16 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 45,000 | $9.22 | $414,900 | 319,855 | — | plan? |
| Jan 23, 2015 FForm 4 → | Jun 12, 2:07 pm EDT | NATURAL GAS SERVICES GROUP INCNGS | 20,547 | $22.00 | $452,034 | 244,884 | — | plan? late |
| Jan 16, 2015 AForm 4 → | Jan 20, 4:24 pm EST | NATURAL GAS SERVICES GROUP INCNGS | 83,590 | $19.49 | $1,629,169 | 274,855 | — | plan? |