NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 640,540 Value ($000) $21,554 Avg Close $29.70 Range $25.36 - $34.47

Q3 2025

Shares 611,653 Value ($000) $17,120 Avg Close $25.41 Range $22.48 - $28.73

Q2 2025

Shares 604,308 Value ($000) $15,597 Avg Close $22.21 Range $16.55 - $27.54

Q1 2025

Shares 605,634 Value ($000) $13,306 Avg Close $25.04 Range $20.01 - $29.42

Q4 2024

Shares 608,044 Value ($000) $16,296 Avg Close $23.22 Range $18.21 - $28.20

Q3 2024

Shares 609,884 Value ($000) $11,655 Avg Close $19.78 Range $16.52 - $22.59

Q2 2024

Shares 602,403 Value ($000) $12,120 Avg Close $21.72 Range $17.81 - $24.97

Q1 2024

Shares 491,167 Value ($000) $9,543 Avg Close $15.93 Range $13.55 - $19.94

Q4 2023

Shares 485,038 Value ($000) $7,799 Avg Close $14.30 Range $12.61 - $16.27

Q3 2023

Shares 485,038 Value ($000) $7,062 Avg Close $10.78 Range $9.52 - $15.23

Q2 2023

Shares 485,038 Value ($000) $4,802 Avg Close $10.23 Range $9.45 - $11.09

Q1 2023

Shares 482,180 Value ($000) $4,971 Avg Close $10.89 Range $9.31 - $12.54

Q4 2022

Shares 487,872 Value ($000) $5,591 Avg Close $10.80 Range $9.88 - $12.25

Q3 2022

Shares 543,554 Value ($000) $5,457 Avg Close $10.16 Range $9.01 - $12.32

Q2 2022

Shares 513,220 Value ($000) $5,646 Avg Close $12.63 Range $10.83 - $14.84

Q1 2022

Shares 517,943 Value ($000) $6,169 Avg Close $11.42 Range $9.74 - $13.89

Q4 2021

Shares 578,990 Value ($000) $6,062 Avg Close $11.19 Range $9.41 - $12.83

Q3 2021

Shares 596,312 Value ($000) $6,190 Avg Close $9.70 Range $8.82 - $10.76

Q2 2021

Shares 596,312 Value ($000) $6,130 Avg Close $9.89 Range $8.77 - $11.52

Q1 2021

Shares 663,639 Value ($000) $6,264 Avg Close $9.42 Range $7.92 - $10.65

Q4 2020

Shares 663,639 Value ($000) $6,291 Avg Close $9.94 Range $8.27 - $12.10

Q3 2020

Shares 594,087 Value ($000) $5,020 Avg Close $7.49 Range $6.05 - $10.02

Q2 2020

Shares 570,760 Value ($000) $3,578 Avg Close $5.74 Range $3.96 - $8.23

Q1 2020

Shares 599,774 Value ($000) $2,675 Avg Close $9.28 Range $2.59 - $13.00

Q4 2019

Shares 598,848 Value ($000) $7,342 Avg Close $11.66 Range $10.44 - $12.91

Q3 2019

Shares 534,089 Value ($000) $6,842 Avg Close $13.56 Range $10.11 - $16.51

Q2 2019

Shares 604,273 Value ($000) $9,970 Avg Close $16.22 Range $14.71 - $18.54

Q1 2019

Shares 616,901 Value ($000) $10,678 Avg Close $17.65 Range $15.90 - $19.02

Q4 2018

Shares 653,750 Value ($000) $10,747 Avg Close $18.94 Range $15.26 - $20.99

Q3 2018

Shares 635,357 Value ($000) $13,407 Avg Close $21.85 Range $20.28 - $24.24

Q2 2018

Shares 591,081 Value ($000) $13,950 Avg Close $23.87 Range $21.47 - $26.42

Q1 2018

Shares 545,348 Value ($000) $13,007 Avg Close $26.44 Range $22.81 - $29.04

Q4 2017

Shares 548,810 Value ($000) $14,378 Avg Close $26.38 Range $23.89 - $29.04

Q3 2017

Shares 564,523 Value ($000) $16,032 Avg Close $24.49 Range $22.26 - $29.24

Q2 2017

Shares 569,428 Value ($000) $14,151 Avg Close $26.24 Range $22.26 - $28.69

Q1 2017

Shares 555,301 Value ($000) $14,466 Avg Close $27.74 Range $23.30 - $33.05

Q4 2016

Shares 545,508 Value ($000) $17,538 Avg Close $27.19 Range $20.43 - $34.13

Q3 2016

Shares 541,897 Value ($000) $13,326 Avg Close $24.06 Range $21.50 - $26.46

Q2 2016

Shares 533,486 Value ($000) $12,217 Avg Close $22.14 Range $19.61 - $25.27

Q1 2016

Shares 558,990 Value ($000) $12,091 Avg Close $18.82 Range $15.79 - $22.57

Q4 2015

Shares 458,276 Value ($000) $10,220 Avg Close $21.48 Range $18.28 - $24.21

Q3 2015

Shares 421,494 Value ($000) $8,135 Avg Close $20.31 Range $18.37 - $22.64

Q2 2015

Shares 411,151 Value ($000) $9,383 Avg Close $23.06 Range $19.10 - $25.82

Q1 2015

Shares 393,894 Value ($000) $7,570 Avg Close $19.65 Range $17.69 - $23.12

Q4 2014

Shares 386,088 Value ($000) $8,896 Avg Close $23.39 Range $20.44 - $26.73

Q3 2014

Shares 375,681 Value ($000) $9,043 Avg Close $28.91 Range $23.00 - $33.65

Q2 2014

Shares 356,215 Value ($000) $11,776 Avg Close $30.73 Range $28.13 - $34.48

Q1 2014

Shares 326,653 Value ($000) $9,845 Avg Close $29.49 Range $25.23 - $34.59

Q4 2013

Shares 310,673 Value ($000) $8,565 Avg Close $27.72 Range $24.44 - $30.62

Q3 2013

Shares 306,409 Value ($000) $8,218 Avg Close $25.86 Range $23.52 - $27.95

Q2 2013

Shares 305,251 Value ($000) $7,170 Avg Close $21.33 Range $18.17 - $23.75

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	640,540	$21,554	$29.70	$25.36 - $34.47
Q3 2025	611,653	$17,120	$25.41	$22.48 - $28.73
Q2 2025	604,308	$15,597	$22.21	$16.55 - $27.54
Q1 2025	605,634	$13,306	$25.04	$20.01 - $29.42
Q4 2024	608,044	$16,296	$23.22	$18.21 - $28.20
Q3 2024	609,884	$11,655	$19.78	$16.52 - $22.59
Q2 2024	602,403	$12,120	$21.72	$17.81 - $24.97
Q1 2024	491,167	$9,543	$15.93	$13.55 - $19.94
Q4 2023	485,038	$7,799	$14.30	$12.61 - $16.27
Q3 2023	485,038	$7,062	$10.78	$9.52 - $15.23
Q2 2023	485,038	$4,802	$10.23	$9.45 - $11.09
Q1 2023	482,180	$4,971	$10.89	$9.31 - $12.54
Q4 2022	487,872	$5,591	$10.80	$9.88 - $12.25
Q3 2022	543,554	$5,457	$10.16	$9.01 - $12.32
Q2 2022	513,220	$5,646	$12.63	$10.83 - $14.84
Q1 2022	517,943	$6,169	$11.42	$9.74 - $13.89
Q4 2021	578,990	$6,062	$11.19	$9.41 - $12.83
Q3 2021	596,312	$6,190	$9.70	$8.82 - $10.76
Q2 2021	596,312	$6,130	$9.89	$8.77 - $11.52
Q1 2021	663,639	$6,264	$9.42	$7.92 - $10.65
Q4 2020	663,639	$6,291	$9.94	$8.27 - $12.10
Q3 2020	594,087	$5,020	$7.49	$6.05 - $10.02
Q2 2020	570,760	$3,578	$5.74	$3.96 - $8.23
Q1 2020	599,774	$2,675	$9.28	$2.59 - $13.00
Q4 2019	598,848	$7,342	$11.66	$10.44 - $12.91
Q3 2019	534,089	$6,842	$13.56	$10.11 - $16.51
Q2 2019	604,273	$9,970	$16.22	$14.71 - $18.54
Q1 2019	616,901	$10,678	$17.65	$15.90 - $19.02
Q4 2018	653,750	$10,747	$18.94	$15.26 - $20.99
Q3 2018	635,357	$13,407	$21.85	$20.28 - $24.24
Q2 2018	591,081	$13,950	$23.87	$21.47 - $26.42
Q1 2018	545,348	$13,007	$26.44	$22.81 - $29.04
Q4 2017	548,810	$14,378	$26.38	$23.89 - $29.04
Q3 2017	564,523	$16,032	$24.49	$22.26 - $29.24
Q2 2017	569,428	$14,151	$26.24	$22.26 - $28.69
Q1 2017	555,301	$14,466	$27.74	$23.30 - $33.05
Q4 2016	545,508	$17,538	$27.19	$20.43 - $34.13
Q3 2016	541,897	$13,326	$24.06	$21.50 - $26.46
Q2 2016	533,486	$12,217	$22.14	$19.61 - $25.27
Q1 2016	558,990	$12,091	$18.82	$15.79 - $22.57
Q4 2015	458,276	$10,220	$21.48	$18.28 - $24.21
Q3 2015	421,494	$8,135	$20.31	$18.37 - $22.64
Q2 2015	411,151	$9,383	$23.06	$19.10 - $25.82
Q1 2015	393,894	$7,570	$19.65	$17.69 - $23.12
Q4 2014	386,088	$8,896	$23.39	$20.44 - $26.73
Q3 2014	375,681	$9,043	$28.91	$23.00 - $33.65
Q2 2014	356,215	$11,776	$30.73	$28.13 - $34.48
Q1 2014	326,653	$9,845	$29.49	$25.23 - $34.59
Q4 2013	310,673	$8,565	$27.72	$24.44 - $30.62
Q3 2013	306,409	$8,218	$25.86	$23.52 - $27.95
Q2 2013	305,251	$7,170	$21.33	$18.17 - $23.75