Ticker: NGS CUSIP: 63886Q109 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2018 | 11,466 | $270 | $23.87 | $21.47 - $26.42 |
| Q1 2018 | 9,822 | $233 | $26.44 | $22.81 - $29.04 |
| Q4 2017 | 10,250 | $269 | $26.38 | $23.89 - $29.04 |
| Q3 2017 | 11,113 | $315 | $24.49 | $22.26 - $29.24 |
| Q2 2017 | 11,424 | $284 | $26.24 | $22.26 - $28.69 |
| Q1 2017 | 10,009 | $261 | $27.74 | $23.30 - $33.05 |
| Q4 2016 | 8,717 | $280 | $27.19 | $20.43 - $34.13 |
| Q3 2016 | 8,809 | $217 | $24.06 | $21.50 - $26.46 |
| Q2 2016 | 8,999 | $206 | $22.14 | $19.61 - $25.27 |
| Q1 2016 | 8,934 | $193 | $18.82 | $15.79 - $22.57 |
| Q4 2015 | 9,326 | $208 | $21.48 | $18.28 - $24.21 |
| Q3 2015 | 9,326 | $180 | $20.31 | $18.37 - $22.64 |
| Q2 2015 | 9,033 | $206 | $23.06 | $19.10 - $25.82 |
| Q1 2015 | 9,213 | $177 | $19.65 | $17.69 - $23.12 |
| Q4 2014 | 8,845 | $204 | $23.39 | $20.44 - $26.73 |
| Q3 2014 | 8,663 | $209 | $28.91 | $23.00 - $33.65 |
| Q2 2014 | 8,280 | $273 | $30.73 | $28.13 - $34.48 |
| Q1 2014 | 9,859 | $297 | $29.49 | $25.23 - $34.59 |
| Q4 2013 | 10,113 | $279 | $27.72 | $24.44 - $30.62 |
| Q3 2013 | 9,651 | $259 | $25.86 | $23.52 - $27.95 |
| Q2 2013 | 9,760 | $229 | $21.33 | $18.17 - $23.75 |