Ticker: NGS CUSIP: 63886Q109 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 7,800 | $262 | $29.70 | $25.36 - $34.47 |
| Q3 2025 | 9,500 | $266 | $25.41 | $22.48 - $28.73 |
| Q2 2025 | 9,500 | $245 | $22.21 | $16.55 - $27.54 |
| Q1 2020 | 9,000 | $40 | $9.28 | $2.59 - $13.00 |
| Q4 2019 | 9,000 | $110 | $11.66 | $10.44 - $12.91 |
| Q3 2019 | 31,400 | $402 | $13.56 | $10.11 - $16.51 |
| Q2 2019 | 31,400 | $518 | $16.22 | $14.71 - $18.54 |
| Q1 2019 | 29,200 | $505 | $17.65 | $15.90 - $19.02 |
| Q4 2018 | 29,200 | $480 | $18.94 | $15.26 - $20.99 |
| Q3 2018 | 29,200 | $616 | $21.85 | $20.28 - $24.24 |
| Q2 2018 | 29,200 | $689 | $23.87 | $21.47 - $26.42 |
| Q1 2018 | 26,600 | $634 | $26.44 | $22.81 - $29.04 |
| Q4 2017 | 26,600 | $696 | $26.38 | $23.89 - $29.04 |
| Q3 2017 | 26,600 | $755 | $24.49 | $22.26 - $29.24 |
| Q2 2017 | 28,000 | $695 | $26.24 | $22.26 - $28.69 |
| Q1 2017 | 21,300 | $554 | $27.74 | $23.30 - $33.05 |
| Q4 2016 | 21,300 | $684 | $27.19 | $20.43 - $34.13 |
| Q3 2016 | 28,600 | $703 | $24.06 | $21.50 - $26.46 |
| Q2 2016 | 26,000 | $595 | $22.14 | $19.61 - $25.27 |
| Q1 2016 | 17,600 | $380 | $18.82 | $15.79 - $22.57 |
| Q4 2015 | 17,600 | $392 | $21.48 | $18.28 - $24.21 |
| Q3 2015 | 14,400 | $277 | $20.31 | $18.37 - $22.64 |
| Q2 2015 | 14,400 | $328 | $23.06 | $19.10 - $25.82 |
| Q1 2015 | 13,400 | $257 | $19.65 | $17.69 - $23.12 |
| Q4 2014 | 18,800 | $433 | $23.39 | $20.44 - $26.73 |
| Q3 2014 | 21,400 | $515 | $28.91 | $23.00 - $33.65 |
| Q2 2014 | 22,400 | $741 | $30.73 | $28.13 - $34.48 |
| Q1 2014 | 25,200 | $760 | $29.49 | $25.23 - $34.59 |
| Q4 2013 | 26,500 | $731 | $27.72 | $24.44 - $30.62 |
| Q3 2013 | 31,600 | $848 | $25.86 | $23.52 - $27.95 |
| Q2 2013 | 33,700 | $792 | $21.33 | $18.17 - $23.75 |