NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

Russell Investments Group, Ltd.'s Holding History (CIK: 0001692234)

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

Q4 2025

Shares 166,177 Value ($000) $5,592 Avg Close $29.70 Range $25.36 - $34.47

Q3 2025

Shares 137,237 Value ($000) $3,841 Avg Close $25.41 Range $22.48 - $28.73

Q2 2025

Shares 147,084 Value ($000) $3,796 Avg Close $22.21 Range $16.55 - $27.54

Q1 2025

Shares 163,473 Value ($000) $3,591 Avg Close $25.04 Range $20.01 - $29.42

Q4 2024

Shares 138,620 Value ($000) $3,715 Avg Close $23.22 Range $18.21 - $28.20

Q3 2024

Shares 121,966 Value ($000) $2,331 Avg Close $19.78 Range $16.52 - $22.59

Q2 2024

Shares 144,623 Value ($000) $2,910 Avg Close $21.72 Range $17.81 - $24.97

Q1 2024

Shares 172,221 Value ($000) $3,346 Avg Close $15.93 Range $13.55 - $19.94

Q4 2023

Shares 130,122 Value ($000) $2,092 Avg Close $14.30 Range $12.61 - $16.27

Q3 2023

Shares 158,827 Value ($000) $2,313 Avg Close $10.78 Range $9.52 - $15.23

Q2 2023

Shares 151,688 Value ($000) $1,502 Avg Close $10.23 Range $9.45 - $11.09

Q1 2023

Shares 151,688 Value ($000) $1,564 Avg Close $10.89 Range $9.31 - $12.54

Q4 2022

Shares 152,297 Value ($000) $1,745 Avg Close $10.80 Range $9.88 - $12.25

Q3 2022

Shares 148,113 Value ($000) $1,485 Avg Close $10.16 Range $9.01 - $12.32

Q2 2022

Shares 166,977 Value ($000) $1,836 Avg Close $12.63 Range $10.83 - $14.84

Q1 2022

Shares 179,492 Value ($000) $2,135 Avg Close $11.42 Range $9.74 - $13.89

Q4 2021

Shares 184,216 Value ($000) $1,927 Avg Close $11.19 Range $9.41 - $12.83

Q3 2021

Shares 195,984 Value ($000) $2,032 Avg Close $9.70 Range $8.82 - $10.76

Q2 2021

Shares 206,487 Value ($000) $2,120 Avg Close $9.89 Range $8.77 - $11.52

Q1 2021

Shares 494,632 Value ($000) $4,667 Avg Close $9.42 Range $7.92 - $10.65

Q4 2020

Shares 766,107 Value ($000) $7,261 Avg Close $9.94 Range $8.27 - $12.10

Q3 2020

Shares 838,872 Value ($000) $7,087 Avg Close $7.49 Range $6.05 - $10.02

Q2 2020

Shares 846,974 Value ($000) $5,311 Avg Close $5.74 Range $3.96 - $8.23

Q1 2020

Shares 872,785 Value ($000) $3,894 Avg Close $9.28 Range $2.59 - $13.00

Q4 2019

Shares 588,130 Value ($000) $7,208 Avg Close $11.66 Range $10.44 - $12.91

Q3 2019

Shares 333,802 Value ($000) $4,276 Avg Close $13.56 Range $10.11 - $16.51

Q2 2019

Shares 237,222 Value ($000) $3,911 Avg Close $16.22 Range $14.71 - $18.54

Q1 2019

Shares 169,485 Value ($000) $2,934 Avg Close $17.65 Range $15.90 - $19.02

Q4 2018

Shares 137,577 Value ($000) $2,257 Avg Close $18.94 Range $15.26 - $20.99

Q3 2018

Shares 113,372 Value ($000) $2,392 Avg Close $21.85 Range $20.28 - $24.24

Q2 2018

Shares 87,037 Value ($000) $2,054 Avg Close $23.87 Range $21.47 - $26.42

Q1 2018

Shares 72,165 Value ($000) $1,722 Avg Close $26.44 Range $22.81 - $29.04

Q4 2017

Shares 52,200 Value ($000) $1,350 Avg Close $26.38 Range $23.89 - $29.04

Q3 2017

Shares 43,264 Value ($000) $1,229 Avg Close $24.49 Range $22.26 - $29.24

Q2 2017

Shares 27,600 Value ($000) $686 Avg Close $26.24 Range $22.26 - $28.69

Q1 2017

Shares 23,900 Value ($000) $623 Avg Close $27.74 Range $23.30 - $33.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	166,177	$5,592	$29.70	$25.36 - $34.47
Q3 2025	137,237	$3,841	$25.41	$22.48 - $28.73
Q2 2025	147,084	$3,796	$22.21	$16.55 - $27.54
Q1 2025	163,473	$3,591	$25.04	$20.01 - $29.42
Q4 2024	138,620	$3,715	$23.22	$18.21 - $28.20
Q3 2024	121,966	$2,331	$19.78	$16.52 - $22.59
Q2 2024	144,623	$2,910	$21.72	$17.81 - $24.97
Q1 2024	172,221	$3,346	$15.93	$13.55 - $19.94
Q4 2023	130,122	$2,092	$14.30	$12.61 - $16.27
Q3 2023	158,827	$2,313	$10.78	$9.52 - $15.23
Q2 2023	151,688	$1,502	$10.23	$9.45 - $11.09
Q1 2023	151,688	$1,564	$10.89	$9.31 - $12.54
Q4 2022	152,297	$1,745	$10.80	$9.88 - $12.25
Q3 2022	148,113	$1,485	$10.16	$9.01 - $12.32
Q2 2022	166,977	$1,836	$12.63	$10.83 - $14.84
Q1 2022	179,492	$2,135	$11.42	$9.74 - $13.89
Q4 2021	184,216	$1,927	$11.19	$9.41 - $12.83
Q3 2021	195,984	$2,032	$9.70	$8.82 - $10.76
Q2 2021	206,487	$2,120	$9.89	$8.77 - $11.52
Q1 2021	494,632	$4,667	$9.42	$7.92 - $10.65
Q4 2020	766,107	$7,261	$9.94	$8.27 - $12.10
Q3 2020	838,872	$7,087	$7.49	$6.05 - $10.02
Q2 2020	846,974	$5,311	$5.74	$3.96 - $8.23
Q1 2020	872,785	$3,894	$9.28	$2.59 - $13.00
Q4 2019	588,130	$7,208	$11.66	$10.44 - $12.91
Q3 2019	333,802	$4,276	$13.56	$10.11 - $16.51
Q2 2019	237,222	$3,911	$16.22	$14.71 - $18.54
Q1 2019	169,485	$2,934	$17.65	$15.90 - $19.02
Q4 2018	137,577	$2,257	$18.94	$15.26 - $20.99
Q3 2018	113,372	$2,392	$21.85	$20.28 - $24.24
Q2 2018	87,037	$2,054	$23.87	$21.47 - $26.42
Q1 2018	72,165	$1,722	$26.44	$22.81 - $29.04
Q4 2017	52,200	$1,350	$26.38	$23.89 - $29.04
Q3 2017	43,264	$1,229	$24.49	$22.26 - $29.24
Q2 2017	27,600	$686	$26.24	$22.26 - $28.69
Q1 2017	23,900	$623	$27.74	$23.30 - $33.05