NATURAL GAS SERVICES GROUP

Ticker: NGS CUSIP: 63886Q109 Class: Common Stock

Voya Investment Management LLC's Holding History (CIK: 0001068837)

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

Q1 2018
Shares 8,719 Value ($000) $208 Avg Close $26.44 Range $22.81 - $29.04
Q4 2017
Shares 9,464 Value ($000) $248 Avg Close $26.38 Range $23.89 - $29.04
Q3 2017
Shares 9,464 Value ($000) $269 Avg Close $24.49 Range $22.26 - $29.24
Q2 2017
Shares 9,464 Value ($000) $235 Avg Close $26.24 Range $22.26 - $28.69
Q1 2017
Shares 8,548 Value ($000) $223 Avg Close $27.74 Range $23.30 - $33.05
Q4 2016
Shares 8,548 Value ($000) $275 Avg Close $27.19 Range $20.43 - $34.13
Q3 2016
Shares 9,354 Value ($000) $230 Avg Close $24.06 Range $21.50 - $26.46
Q2 2016
Shares 9,898 Value ($000) $227 Avg Close $22.14 Range $19.61 - $25.27
Q1 2016
Shares 9,898 Value ($000) $214 Avg Close $18.82 Range $15.79 - $22.57
Q4 2015
Shares 9,898 Value ($000) $221 Avg Close $21.48 Range $18.28 - $24.21
Q2 2015
Shares 12,741 Value ($000) $291 Avg Close $23.06 Range $19.10 - $25.82
Q1 2015
Shares 12,741 Value ($000) $245 Avg Close $19.65 Range $17.69 - $23.12
Q4 2014
Shares 12,741 Value ($000) $294 Avg Close $23.39 Range $20.44 - $26.73
Q3 2014
Shares 14,032 Value ($000) $338 Avg Close $28.91 Range $23.00 - $33.65
Q2 2014
Shares 14,032 Value ($000) $464 Avg Close $30.73 Range $28.13 - $34.48
Q1 2014
Shares 15,035 Value ($000) $453 Avg Close $29.49 Range $25.23 - $34.59
Q4 2013
Shares 15,035 Value ($000) $415 Avg Close $27.72 Range $24.44 - $30.62
Q3 2013
Shares 15,035 Value ($000) $403 Avg Close $25.86 Range $23.52 - $27.95
Q2 2013
Shares 15,035 Value ($000) $353 Avg Close $21.33 Range $18.17 - $23.75