NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

KORNITZER CAPITAL MANAGEMENT INC /KS's Holding History (CIK: 0000898358)

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

Q4 2015

Shares 47,381 Value ($000) $1,057 Avg Close $21.48 Range $18.28 - $24.21

Q3 2015

Shares 114,381 Value ($000) $2,208 Avg Close $20.31 Range $18.37 - $22.64

Q2 2015

Shares 114,381 Value ($000) $2,610 Avg Close $23.06 Range $19.10 - $25.82

Q1 2015

Shares 114,381 Value ($000) $2,198 Avg Close $19.65 Range $17.69 - $23.12

Q4 2014

Shares 120,350 Value ($000) $2,773 Avg Close $23.39 Range $20.44 - $26.73

Q3 2014

Shares 120,350 Value ($000) $2,897 Avg Close $28.91 Range $23.00 - $33.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	47,381	$1,057	$21.48	$18.28 - $24.21
Q3 2015	114,381	$2,208	$20.31	$18.37 - $22.64
Q2 2015	114,381	$2,610	$23.06	$19.10 - $25.82
Q1 2015	114,381	$2,198	$19.65	$17.69 - $23.12
Q4 2014	120,350	$2,773	$23.39	$20.44 - $26.73
Q3 2014	120,350	$2,897	$28.91	$23.00 - $33.65