Ticker: NGS CUSIP: 63886Q109 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2019 | 4,474 | $74 | $16.22 | $14.71 - $18.54 |
| Q1 2019 | 4,474 | $77 | $17.65 | $15.90 - $19.02 |
| Q4 2018 | 4,486 | $74 | $18.94 | $15.26 - $20.99 |
| Q3 2018 | 4,486 | $95 | $21.85 | $20.28 - $24.24 |
| Q2 2018 | 4,486 | $105,870 | $23.87 | $21.47 - $26.42 |
| Q1 2018 | 4,486 | $106,991 | $26.44 | $22.81 - $29.04 |
| Q4 2017 | 4,486 | $118 | $26.38 | $23.89 - $29.04 |
| Q3 2017 | 9,307 | $264 | $24.49 | $22.26 - $29.24 |
| Q2 2017 | 9,307 | $231 | $26.24 | $22.26 - $28.69 |
| Q1 2017 | 9,307 | $242 | $27.74 | $23.30 - $33.05 |
| Q4 2016 | 9,307 | $299 | $27.19 | $20.43 - $34.13 |
| Q3 2016 | 10,194 | $251 | $24.06 | $21.50 - $26.46 |
| Q2 2016 | 9,892 | $227 | $22.14 | $19.61 - $25.27 |
| Q1 2016 | 10,461 | $226 | $18.82 | $15.79 - $22.57 |
| Q4 2015 | 10,461 | $233 | $21.48 | $18.28 - $24.21 |
| Q3 2015 | 10,461 | $202 | $20.31 | $18.37 - $22.64 |
| Q2 2015 | 10,461 | $239 | $23.06 | $19.10 - $25.82 |
| Q1 2015 | 11,796 | $227 | $19.65 | $17.69 - $23.12 |
| Q4 2014 | 11,796 | $272 | $23.39 | $20.44 - $26.73 |
| Q3 2014 | 9,872 | $238 | $28.91 | $23.00 - $33.65 |
| Q2 2014 | 9,872 | $326 | $30.73 | $28.13 - $34.48 |
| Q1 2014 | 11,258 | $339 | $29.49 | $25.23 - $34.59 |
| Q4 2013 | 9,843 | $271 | $27.72 | $24.44 - $30.62 |
| Q3 2013 | 9,843 | $264 | $25.86 | $23.52 - $27.95 |
| Q2 2013 | 11,323 | $266 | $21.33 | $18.17 - $23.75 |