FILINGS
| NPK 0000080172 | |||
|---|---|---|---|
| Filing Date | Form Type | Description | Document |
| 2019-01-02 | 4 | PRIMARY DOCUMENT | View Document |
| 2019-01-02 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-12-14 | 8-K | 8-K | View Document |
| 2018-11-09 | 10-Q | 10-Q | View Document |
| 2018-10-29 | 8-K | 8-K | View Document |
| 2018-10-18 | 8-K | 8-K | View Document |
| 2018-09-26 | 8-K | 8-K | View Document |
| 2018-08-10 | 10-Q | 10-Q | View Document |
| 2018-07-30 | 8-K | 8-K | View Document |
| 2018-07-11 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-07-10 | SC 13G/A | View Document | |
| 2018-05-25 | SD | FORM SD | View Document |
| 2018-05-16 | 8-K | 8-K | View Document |
| 2018-05-16 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-05-11 | 10-Q | 10-Q | View Document |
| 2018-04-30 | 8-K | 8-K | View Document |
| 2018-04-23 | 8-K | 8-K | View Document |
| 2018-04-09 | DEF 14A | DEF 14A | View Document |
| 2018-03-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-03-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-03-16 | 10-K | 10-K | View Document |
| 2018-02-28 | 8-K | 8-K | View Document |
| 2018-02-12 | 8-K | 8-K | View Document |
| 2018-02-09 | SC 13G/A | View Document | |
| 2018-01-25 | SC 13G/A | View Document | |
| 2018-01-23 | SC 13G/A | View Document | |
| 2018-01-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-01-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-01-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-01-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-01-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-11-15 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-11-13 | 10-Q | 10-Q | View Document |
| 2017-10-30 | 8-K | 8-K | View Document |
| 2017-09-01 | 8-K | 8-K | View Document |
| 2017-09-01 | 3 | PRIMARY DOCUMENT | View Document |
| 2017-08-31 | S-8 | FORM S-8 | View Document |
| 2017-08-16 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-11 | 10-Q | 10-Q | View Document |
| 2017-07-31 | 8-K | 8-K | View Document |
| 2017-06-07 | 8-K | FORM 8-K DATED JUNE 5, 2017 | View Document |
| 2017-05-31 | SD | FORM SD | View Document |
| 2017-05-18 | 8-K | 8-K | View Document |
| 2017-05-12 | 10-Q | 10-Q | View Document |
| 2017-05-01 | 8-K | 8-K | View Document |
| 2017-04-26 | 8-K | 8-K | View Document |
| 2017-04-11 | DEF 14A | DEFINITIVE PROXY STATEMENT | View Document |
| 2017-03-17 | 8-K | 8-K | View Document |
| 2017-03-16 | 10-K | 10-K | View Document |
| 2017-02-16 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-02-16 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-02-16 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-02-13 | 8-K | 8-K | View Document |
| 2017-02-10 | SC 13G/A | View Document | |
| 2017-01-26 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-01-26 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-01-26 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-01-26 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-01-25 | SC 13G/A | View Document | |
| 2017-01-11 | SC 13G/A | View Document | |
| 2017-01-09 | 8-K | 8-K | View Document |
| 2016-11-14 | 10-Q | 10-Q | View Document |
| 2016-10-31 | 8-K | 8-K | View Document |
| 2016-08-12 | 10-Q | 10-Q | View Document |
| 2016-08-01 | 8-K | 8-K | View Document |
| 2016-06-09 | 8-K | 8-K | View Document |
| 2016-05-31 | SD | FORM SD | View Document |
| 2016-05-19 | 8-K | 8-K | View Document |
| 2016-05-18 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-05-13 | 10-Q | 10-Q | View Document |
| 2016-05-02 | 8-K | 8-K | View Document |
| 2016-04-12 | 8-K | 8-K | View Document |
| 2016-04-12 | DEF 14A | DEFINITIVE PROXY STATEMENT | View Document |
| 2016-03-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-03-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-03-15 | 10-K | 10-K | View Document |
| 2016-02-16 | 8-K | 8-K | View Document |
| 2016-02-12 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-02-12 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-02-12 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-02-12 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-02-12 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-02-10 | SC 13G/A | View Document | |
| 2016-01-27 | SC 13G/A | View Document | |
| 2016-01-19 | SC 13G/A | View Document | |
| 2015-12-02 | 3 | PRIMARY DOCUMENT | View Document |
| 2015-11-24 | 8-K | 8-K | View Document |
| 2015-11-18 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-11-13 | 10-Q | 10-Q | View Document |
| 2015-11-02 | 8-K | 8-K | View Document |
| 2015-10-23 | 8-K | 8-K | View Document |
| 2015-08-18 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-08-14 | 10-Q | FORM 10-Q FOR THE QUARTER ENDED JULY 5, 2015 | View Document |
| 2015-08-03 | 8-K | 8-K | View Document |
| 2015-06-30 | 8-K | FORM 8-K DATED JUNE 25, 2015 | View Document |
| 2015-06-01 | SD | SD | View Document |
| 2015-05-21 | 8-K | CURRENT REPORT | View Document |
| 2015-05-15 | 10-Q | FORM 10-Q FOR THE QUARTER ENDED APRIL 5, 2015 | View Document |
| 2015-05-04 | 8-K | CURRENT REPORT | View Document |
| 2015-04-22 | ARS | AUTO-GENERATED PAPER DOCUMENT | View Document |
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