NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

THOMPSON SIEGEL & WALMSLEY LLC's Holding History (CIK: 0001008322)

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

Q4 2016

Shares 58 Value ($000) $2 Avg Close $27.19 Range $20.43 - $34.13

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	58	$2	$27.19	$20.43 - $34.13