NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

ALGERT GLOBAL LLC's Holding History (CIK: 0001275218)

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

Q3 2020

Shares 11,283 Value ($000) $95 Avg Close $7.49 Range $6.05 - $10.02

Q1 2020

Shares 11,810 Value ($000) $53 Avg Close $9.28 Range $2.59 - $13.00

Q4 2019

Shares 17,680 Value ($000) $217 Avg Close $11.66 Range $10.44 - $12.91

Q3 2017

Shares 77,397 Value ($000) $2,198 Avg Close $24.49 Range $22.26 - $29.24

Q2 2017

Shares 70,131 Value ($000) $1,743 Avg Close $26.24 Range $22.26 - $28.69

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2020	11,283	$95	$7.49	$6.05 - $10.02
Q1 2020	11,810	$53	$9.28	$2.59 - $13.00
Q4 2019	17,680	$217	$11.66	$10.44 - $12.91
Q3 2017	77,397	$2,198	$24.49	$22.26 - $29.24
Q2 2017	70,131	$1,743	$26.24	$22.26 - $28.69