NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

Granite Investment Partners, LLC's Holding History (CIK: 0001542266)

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

Q3 2017
Shares 30,854 Value ($000) $876 Avg Close $24.49 Range $22.26 - $29.24
Q2 2017
Shares 46,958 Value ($000) $1,167 Avg Close $26.24 Range $22.26 - $28.69
Q1 2017
Shares 49,210 Value ($000) $1,282 Avg Close $27.74 Range $23.30 - $33.05
Q4 2016
Shares 65,154 Value ($000) $2,095 Avg Close $27.19 Range $20.43 - $34.13
Q3 2016
Shares 70,353 Value ($000) $1,730 Avg Close $24.06 Range $21.50 - $26.46
Q2 2016
Shares 66,536 Value ($000) $1,524 Avg Close $22.14 Range $19.61 - $25.27
Q1 2016
Shares 78,113 Value ($000) $1,690 Avg Close $18.82 Range $15.79 - $22.57
Q4 2015
Shares 62,414 Value ($000) $1,392 Avg Close $21.48 Range $18.28 - $24.21
Q3 2015
Shares 68,646 Value ($000) $1,325 Avg Close $20.31 Range $18.37 - $22.64
Q2 2015
Shares 48,971 Value ($000) $1,117 Avg Close $23.06 Range $19.10 - $25.82
Q1 2015
Shares 61,669 Value ($000) $1,185 Avg Close $19.65 Range $17.69 - $23.12
Q4 2014
Shares 35,851 Value ($000) $826 Avg Close $23.39 Range $20.44 - $26.73
Q3 2014
Shares 21,073 Value ($000) $507 Avg Close $28.91 Range $23.00 - $33.65
Q2 2014
Shares 20,493 Value ($000) $677 Avg Close $30.73 Range $28.13 - $34.48
Q1 2014
Shares 14,450 Value ($000) $436 Avg Close $29.49 Range $25.23 - $34.59
Q4 2013
Shares 16,900 Value ($000) $466 Avg Close $27.72 Range $24.44 - $30.62
Q3 2013
Shares 16,900 Value ($000) $453 Avg Close $25.86 Range $23.52 - $27.95
Q2 2013
Shares 17,010 Value ($000) $400 Avg Close $21.33 Range $18.17 - $23.75