NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2025

Shares 27,633 Value ($000) $930 Avg Close $29.70 Range $25.36 - $34.47

Q3 2025

Shares 31,115 Value ($000) $871 Avg Close $25.41 Range $22.48 - $28.73

Q2 2025

Shares 14,036 Value ($000) $362 Avg Close $22.21 Range $16.55 - $27.54

Q2 2024

Shares 36,853 Value ($000) $1 Avg Close $21.72 Range $17.81 - $24.97

Q1 2024

Shares 32,156 Value ($000) $1 Avg Close $15.93 Range $13.55 - $19.94

Q3 2022

Shares 20,974 Value ($000) $211 Avg Close $10.16 Range $9.01 - $12.32

Q1 2017

Shares 28,845 Value ($000) $751 Avg Close $27.74 Range $23.30 - $33.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	27,633	$930	$29.70	$25.36 - $34.47
Q3 2025	31,115	$871	$25.41	$22.48 - $28.73
Q2 2025	14,036	$362	$22.21	$16.55 - $27.54
Q2 2024	36,853	$1	$21.72	$17.81 - $24.97
Q1 2024	32,156	$1	$15.93	$13.55 - $19.94
Q3 2022	20,974	$211	$10.16	$9.01 - $12.32
Q1 2017	28,845	$751	$27.74	$23.30 - $33.05