Ticker: NGS CUSIP: 63886Q109 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 92,233 | $3,104 | $29.70 | $25.36 - $34.47 |
| Q3 2025 | 31,503 | $882 | $25.41 | $22.48 - $28.73 |
| Q2 2025 | 30,609 | $790 | $22.21 | $16.55 - $27.54 |
| Q1 2025 | 30,344 | $667 | $25.04 | $20.01 - $29.42 |
| Q4 2024 | 32,102 | $860 | $23.22 | $18.21 - $28.20 |
| Q3 2024 | 30,669 | $586 | $19.78 | $16.52 - $22.59 |
| Q2 2024 | 39,160 | $788 | $21.72 | $17.81 - $24.97 |
| Q4 2023 | 28,043 | $451 | $14.30 | $12.61 - $16.27 |
| Q3 2023 | 24,871 | $362 | $10.78 | $9.52 - $15.23 |
| Q2 2023 | 24,499 | $243 | $10.23 | $9.45 - $11.09 |
| Q1 2023 | 29,258 | $302 | $10.89 | $9.31 - $12.54 |
| Q4 2022 | 30,343 | $348 | $10.80 | $9.88 - $12.25 |
| Q3 2022 | 21,115 | $212 | $10.16 | $9.01 - $12.32 |
| Q2 2022 | 21,743 | $239 | $12.63 | $10.83 - $14.84 |
| Q3 2021 | 19,720 | $205 | $9.70 | $8.82 - $10.76 |
| Q2 2021 | 19,868 | $204 | $9.89 | $8.77 - $11.52 |
| Q1 2021 | 19,865 | $187 | $9.42 | $7.92 - $10.65 |
| Q4 2020 | 26,454 | $251 | $9.94 | $8.27 - $12.10 |
| Q3 2020 | 11,447 | $96 | $7.49 | $6.05 - $10.02 |
| Q2 2020 | 11,827 | $74 | $5.74 | $3.96 - $8.23 |
| Q1 2020 | 69,027 | $308 | $9.28 | $2.59 - $13.00 |
| Q4 2019 | 59,672 | $732 | $11.66 | $10.44 - $12.91 |
| Q3 2019 | 56,954 | $730 | $13.56 | $10.11 - $16.51 |
| Q2 2019 | 62,409 | $1,030 | $16.22 | $14.71 - $18.54 |
| Q1 2019 | 74,686 | $1,292 | $17.65 | $15.90 - $19.02 |
| Q4 2018 | 73,778 | $1,213 | $18.94 | $15.26 - $20.99 |
| Q3 2018 | 75,205 | $1,586 | $21.85 | $20.28 - $24.24 |
| Q2 2018 | 76,137 | $1,797 | $23.87 | $21.47 - $26.42 |
| Q1 2018 | 424,290 | $10,119 | $26.44 | $22.81 - $29.04 |
| Q4 2017 | 484,677 | $12,699 | $26.38 | $23.89 - $29.04 |
| Q3 2017 | 531,294 | $15,089 | $24.49 | $22.26 - $29.24 |
| Q2 2017 | 556,337 | $13,825 | $26.24 | $22.26 - $28.69 |
| Q1 2017 | 567,437 | $14,781 | $27.74 | $23.30 - $33.05 |
| Q4 2016 | 553,078 | $17,782 | $27.19 | $20.43 - $34.13 |
| Q3 2016 | 555,163 | $13,652 | $24.06 | $21.50 - $26.46 |
| Q2 2016 | 581,225 | $13,310 | $22.14 | $19.61 - $25.27 |
| Q1 2016 | 554,933 | $12,003 | $18.82 | $15.79 - $22.57 |
| Q4 2015 | 515,530 | $11,497 | $21.48 | $18.28 - $24.21 |
| Q3 2015 | 556,533 | $10,740 | $20.31 | $18.37 - $22.64 |
| Q2 2015 | 578,283 | $13,197 | $23.06 | $19.10 - $25.82 |
| Q1 2015 | 572,766 | $11,007 | $19.65 | $17.69 - $23.12 |
| Q4 2014 | 601,561 | $13,861 | $23.39 | $20.44 - $26.73 |
| Q3 2014 | 603,352 | $14,523 | $28.91 | $23.00 - $33.65 |
| Q2 2014 | 623,347 | $20,607 | $30.73 | $28.13 - $34.48 |
| Q1 2014 | 91,225 | $2,749 | $29.49 | $25.23 - $34.59 |
| Q4 2013 | 152,938 | $4,216 | $27.72 | $24.44 - $30.62 |
| Q3 2013 | 136,966 | $3,674 | $25.86 | $23.52 - $27.95 |
| Q2 2013 | 88,388 | $2,076 | $21.33 | $18.17 - $23.75 |