NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

RAMSEY QUANTITATIVE SYSTEMS's Holding History (CIK: 0001132897)

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

Q4 2018

Shares 5,982 Value ($000) $98 Avg Close $18.94 Range $15.26 - $20.99

Q3 2018

Shares 5,982 Value ($000) $126 Avg Close $21.85 Range $20.28 - $24.24

Q2 2018

Shares 4,339 Value ($000) $102 Avg Close $23.87 Range $21.47 - $26.42

Q1 2018

Shares 4,085 Value ($000) $97 Avg Close $26.44 Range $22.81 - $29.04

Q4 2017

Shares 980 Value ($000) $26 Avg Close $26.38 Range $23.89 - $29.04

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	5,982	$98	$18.94	$15.26 - $20.99
Q3 2018	5,982	$126	$21.85	$20.28 - $24.24
Q2 2018	4,339	$102	$23.87	$21.47 - $26.42
Q1 2018	4,085	$97	$26.44	$22.81 - $29.04
Q4 2017	980	$26	$26.38	$23.89 - $29.04