NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

Clearbridge Investments, LLC's Holding History (CIK: 0001348883)

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

Q1 2016
Shares 49,392 Value ($000) $1,068 Avg Close $18.82 Range $15.79 - $22.57
Q4 2015
Shares 48,800 Value ($000) $1,088 Avg Close $21.48 Range $18.28 - $24.21
Q3 2015
Shares 68,694 Value ($000) $1,326 Avg Close $20.31 Range $18.37 - $22.64
Q2 2015
Shares 77,715 Value ($000) $1,773 Avg Close $23.06 Range $19.10 - $25.82
Q1 2015
Shares 148,194 Value ($000) $2,848 Avg Close $19.65 Range $17.69 - $23.12
Q4 2014
Shares 135,894 Value ($000) $3,131 Avg Close $23.39 Range $20.44 - $26.73
Q3 2014
Shares 130,161 Value ($000) $3,133 Avg Close $28.91 Range $23.00 - $33.65
Q2 2014
Shares 161,765 Value ($000) $5,348 Avg Close $30.73 Range $28.13 - $34.48
Q1 2014
Shares 180,776 Value ($000) $5,449 Avg Close $29.49 Range $25.23 - $34.59
Q4 2013
Shares 177,760 Value ($000) $4,901 Avg Close $27.72 Range $24.44 - $30.62
Q3 2013
Shares 167,613 Value ($000) $4,495 Avg Close $25.86 Range $23.52 - $27.95
Q2 2013
Shares 151,871 Value ($000) $3,568 Avg Close $21.33 Range $18.17 - $23.75