Ticker: NL CUSIP: 629156407 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2017 | 4,958 | $45 | $5.16 | $4.60 - $6.38 |
| Q2 2017 | 4,958 | $35 | $5.28 | $4.03 - $7.32 |
| Q1 2017 | 7,989 | $52 | $4.54 | $3.53 - $6.08 |
| Q4 2016 | 7,989 | $65 | $3.68 | $2.08 - $6.45 |
| Q3 2016 | 7,989 | $31 | $2.38 | $1.51 - $4.17 |
| Q2 2016 | 7,989 | $21 | $1.92 | $1.44 - $2.37 |
| Q1 2016 | 7,989 | $18 | $1.59 | $1.29 - $2.08 |
| Q4 2015 | 7,989 | $24 | $2.26 | $1.77 - $2.84 |
| Q3 2015 | 7,989 | $24 | $3.42 | $1.95 - $5.15 |
| Q2 2015 | 7,989 | $59 | $5.07 | $4.66 - $5.54 |
| Q1 2015 | 7,989 | $62 | $5.04 | $4.59 - $5.87 |
| Q4 2014 | 7,989 | $69 | $5.19 | $4.43 - $6.23 |
| Q3 2014 | 7,424 | $55 | $6.00 | $4.80 - $7.05 |
| Q2 2014 | 8,228 | $76 | $6.35 | $5.61 - $7.46 |
| Q1 2014 | 8,550 | $93 | $7.51 | $6.74 - $8.43 |
| Q4 2013 | 7,350 | $82 | $7.44 | $6.69 - $7.97 |
| Q3 2013 | 7,350 | $83 | $7.29 | $6.80 - $8.16 |
| Q2 2013 | 7,038 | $80 | $7.45 | $6.66 - $8.29 |