NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2023

Shares 53 Value ($000) $1 Avg Close $14.30 Range $12.61 - $16.27

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2023	53	$1	$14.30	$12.61 - $16.27