NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

LSV ASSET MANAGEMENT's Holding History (CIK: 0001050470)

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

Q1 2014

Shares 5,500 Value ($000) $165 Avg Close $29.49 Range $25.23 - $34.59

Q4 2013

Shares 5,500 Value ($000) $151 Avg Close $27.72 Range $24.44 - $30.62

Q3 2013

Shares 56,000 Value ($000) $1,501 Avg Close $25.86 Range $23.52 - $27.95

Q2 2013

Shares 97,100 Value ($000) $2,280 Avg Close $21.33 Range $18.17 - $23.75

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	5,500	$165	$29.49	$25.23 - $34.59
Q4 2013	5,500	$151	$27.72	$24.44 - $30.62
Q3 2013	56,000	$1,501	$25.86	$23.52 - $27.95
Q2 2013	97,100	$2,280	$21.33	$18.17 - $23.75