Ticker: NGS CUSIP: 63886Q109 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 4,602 | $154 | $29.70 | $25.36 - $34.47 |
| Q3 2025 | 3,831 | $107 | $25.41 | $22.48 - $28.73 |
| Q2 2025 | 12,618 | $325 | $22.21 | $16.55 - $27.54 |
| Q1 2025 | 11,794 | $259 | $25.04 | $20.01 - $29.42 |
| Q4 2024 | 12,423 | $333 | $23.22 | $18.21 - $28.20 |
| Q3 2024 | 12,176 | $234 | $19.78 | $16.52 - $22.59 |
| Q2 2024 | 12,009 | $241 | $21.72 | $17.81 - $24.97 |
| Q1 2024 | 8,900 | $173 | $15.93 | $13.55 - $19.94 |
| Q4 2023 | 9,369 | $151 | $14.30 | $12.61 - $16.27 |
| Q3 2023 | 8,600 | $125 | $10.78 | $9.52 - $15.23 |
| Q2 2023 | 3,500 | $35 | $10.23 | $9.45 - $11.09 |
| Q1 2023 | 3,510 | $36 | $10.89 | $9.31 - $12.54 |
| Q4 2022 | 3,500 | $40 | $10.80 | $9.88 - $12.25 |
| Q2 2022 | 52 | $1 | $12.63 | $10.83 - $14.84 |
| Q3 2021 | 6,628 | $69 | $9.70 | $8.82 - $10.76 |
| Q2 2021 | 6,628 | $68 | $9.89 | $8.77 - $11.52 |
| Q1 2021 | 6,729 | $64 | $9.42 | $7.92 - $10.65 |
| Q4 2020 | 6,806 | $65 | $9.94 | $8.27 - $12.10 |
| Q3 2020 | 13,163 | $111 | $7.49 | $6.05 - $10.02 |
| Q2 2020 | 13,739 | $86 | $5.74 | $3.96 - $8.23 |
| Q1 2020 | 13,182 | $59 | $9.28 | $2.59 - $13.00 |
| Q4 2019 | 14,633 | $180 | $11.66 | $10.44 - $12.91 |
| Q3 2019 | 26,308 | $337 | $13.56 | $10.11 - $16.51 |
| Q2 2019 | 25,710 | $424 | $16.22 | $14.71 - $18.54 |
| Q1 2019 | 25,725 | $445 | $17.65 | $15.90 - $19.02 |
| Q4 2018 | 25,700 | $423 | $18.94 | $15.26 - $20.99 |
| Q3 2018 | 24,392 | $515 | $21.85 | $20.28 - $24.24 |
| Q2 2018 | 24,202 | $570 | $23.87 | $21.47 - $26.42 |
| Q1 2018 | 24,174 | $576 | $26.44 | $22.81 - $29.04 |
| Q4 2017 | 27,693 | $725 | $26.38 | $23.89 - $29.04 |
| Q3 2017 | 29,084 | $827 | $24.49 | $22.26 - $29.24 |
| Q2 2017 | 27,910 | $693 | $26.24 | $22.26 - $28.69 |
| Q1 2017 | 30,320 | $789 | $27.74 | $23.30 - $33.05 |
| Q4 2016 | 34,672 | $1,115 | $27.19 | $20.43 - $34.13 |
| Q3 2016 | 29,593 | $727 | $24.06 | $21.50 - $26.46 |
| Q2 2016 | 29,593 | $678 | $22.14 | $19.61 - $25.27 |
| Q1 2016 | 29,646 | $641 | $18.82 | $15.79 - $22.57 |
| Q4 2015 | 29,675 | $662 | $21.48 | $18.28 - $24.21 |
| Q3 2015 | 25,288 | $489 | $20.31 | $18.37 - $22.64 |
| Q2 2015 | 25,976 | $593 | $23.06 | $19.10 - $25.82 |
| Q1 2015 | 27,771 | $534 | $19.65 | $17.69 - $23.12 |
| Q4 2014 | 27,603 | $636 | $23.39 | $20.44 - $26.73 |
| Q3 2014 | 20,229 | $487 | $28.91 | $23.00 - $33.65 |
| Q2 2014 | 21,878 | $723 | $30.73 | $28.13 - $34.48 |
| Q1 2014 | 20,238 | $610 | $29.49 | $25.23 - $34.59 |
| Q4 2013 | 20,601 | $568 | $27.72 | $24.44 - $30.62 |
| Q3 2013 | 21,666 | $580 | $25.86 | $23.52 - $27.95 |
| Q2 2013 | 19,943 | $469 | $21.33 | $18.17 - $23.75 |