NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

Municipal Employees' Retirement System of Michigan's Holding History (CIK: 0001588873)

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

Q3 2016
Shares 12,760 Value ($000) $314 Avg Close $24.06 Range $21.50 - $26.46
Q2 2016
Shares 12,760 Value ($000) $292 Avg Close $22.14 Range $19.61 - $25.27
Q1 2016
Shares 12,760 Value ($000) $276 Avg Close $18.82 Range $15.79 - $22.57
Q4 2015
Shares 12,760 Value ($000) $285 Avg Close $21.48 Range $18.28 - $24.21
Q3 2015
Shares 12,760 Value ($000) $246 Avg Close $20.31 Range $18.37 - $22.64
Q2 2015
Shares 11,100 Value ($000) $253 Avg Close $23.06 Range $19.10 - $25.82
Q1 2015
Shares 11,100 Value ($000) $213 Avg Close $19.65 Range $17.69 - $23.12
Q4 2014
Shares 11,100 Value ($000) $256 Avg Close $23.39 Range $20.44 - $26.73
Q3 2014
Shares 9,900 Value ($000) $238 Avg Close $28.91 Range $23.00 - $33.65
Q2 2014
Shares 9,900 Value ($000) $327 Avg Close $30.73 Range $28.13 - $34.48
Q1 2014
Shares 9,900 Value ($000) $298 Avg Close $29.49 Range $25.23 - $34.59