Ticker: NGS CUSIP: 63886Q109 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2018 | 8,719 | $208 | $26.44 | $22.81 - $29.04 |
| Q4 2017 | 9,464 | $248 | $26.38 | $23.89 - $29.04 |
| Q3 2017 | 9,464 | $269 | $24.49 | $22.26 - $29.24 |
| Q2 2017 | 9,464 | $235 | $26.24 | $22.26 - $28.69 |
| Q1 2017 | 8,548 | $223 | $27.74 | $23.30 - $33.05 |
| Q4 2016 | 8,548 | $275 | $27.19 | $20.43 - $34.13 |
| Q3 2016 | 9,354 | $230 | $24.06 | $21.50 - $26.46 |
| Q2 2016 | 9,898 | $227 | $22.14 | $19.61 - $25.27 |
| Q1 2016 | 9,898 | $214 | $18.82 | $15.79 - $22.57 |
| Q4 2015 | 9,898 | $221 | $21.48 | $18.28 - $24.21 |
| Q2 2015 | 12,741 | $291 | $23.06 | $19.10 - $25.82 |
| Q1 2015 | 12,741 | $245 | $19.65 | $17.69 - $23.12 |
| Q4 2014 | 12,741 | $294 | $23.39 | $20.44 - $26.73 |
| Q3 2014 | 14,032 | $338 | $28.91 | $23.00 - $33.65 |
| Q2 2014 | 14,032 | $464 | $30.73 | $28.13 - $34.48 |
| Q1 2014 | 15,035 | $453 | $29.49 | $25.23 - $34.59 |
| Q4 2013 | 15,035 | $415 | $27.72 | $24.44 - $30.62 |
| Q3 2013 | 15,035 | $403 | $25.86 | $23.52 - $27.95 |
| Q2 2013 | 15,035 | $353 | $21.33 | $18.17 - $23.75 |