NPK's most recent stock split occurred on July 1, 1983. It was a 3-for-2 split.
Total Stock Splits: 4
| Ex Date | Adjustment Factor | Split From | Split To | Split Type |
|---|---|---|---|---|
| 1976-07-20 | 1.5 | 2 | 3 | stock split |
| 1977-07-19 | 2 | 1 | 2 | stock split |
| 1982-07-01 | 1.5 | 2 | 3 | stock split |
| 1983-07-01 | 1.5 | 2 | 3 | stock split |
