FILINGS
| PRKR 0000914139 | |||
|---|---|---|---|
| Filing Date | Form Type | Description | Document |
| 2021-12-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-12-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-12-16 | 8-K | CURRENT REPORT | View Document |
| 2021-11-19 | S-8 | S-8 | View Document |
| 2021-11-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-11-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-11-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-11-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-11-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-11-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-11-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-11-15 | 10-Q | 10-Q | View Document |
| 2021-11-15 | 8-K | CURRENT REPORT | View Document |
| 2021-11-12 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-10-27 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-10-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-10-14 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-10-07 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-10-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-10-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-10-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-10-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-10-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-10-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-09-30 | 8-K | FORM 8-K | View Document |
| 2021-09-28 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-09-22 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-09-15 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-09-09 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-09-01 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-08-16 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-08-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-08-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-08-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-08-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-08-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-08-16 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-08-13 | 10-Q | 10-Q | View Document |
| 2021-08-13 | 8-K | CURRENT REPORT | View Document |
| 2021-08-11 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-08-10 | DEF 14A | DEF 14A | View Document |
| 2021-08-04 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-07-30 | DEF 14A | DEF 14A | View Document |
| 2021-07-30 | DEFA14A | DEFA14A | View Document |
| 2021-07-28 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-06-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-05-18 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-05-18 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-05-18 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-05-18 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-05-18 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-05-18 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-05-18 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-05-17 | 10-Q | 10-Q | View Document |
| 2021-05-17 | 8-K | CURRENT REPORT | View Document |
| 2021-05-11 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-04-26 | EFFECT | View Document | |
| 2021-04-26 | 424B3 | FINAL PROSPECTUS | View Document |
| 2021-04-21 | CORRESP | View Document | |
| 2021-04-21 | UPLOAD | View Document | |
| 2021-04-16 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-04-14 | S-1 | S1 | View Document |
| 2021-04-12 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-04-07 | SC 13D | SC 13D | View Document |
| 2021-04-06 | D | View Document | |
| 2021-04-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-04-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-04-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-04-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-04-01 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-03-31 | 10-K | 10-K | View Document |
| 2021-03-31 | 8-K | CURRENT REPORT | View Document |
| 2021-03-17 | D/A | View Document | |
| 2021-03-15 | SC 13D | SC 13D | View Document |
| 2021-03-09 | SC 13G/A | AMENDMENT NO. 12 | View Document |
| 2021-02-16 | 5 | PRIMARY DOCUMENT | View Document |
| 2021-02-10 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-02-10 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-02-10 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-02-10 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-02-10 | 5 | PRIMARY DOCUMENT | View Document |
| 2021-02-10 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-02-10 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-01-15 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-15 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-15 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-15 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-15 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-13 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-01-13 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-01-13 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-01-13 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-01-13 | 4 | PRIMARY DOCUMENT | View Document |
| 2021-01-13 | 8-K | PRIMARY DOCUMENT | View Document |
| 2021-01-08 | D | View Document | |
| 2021-01-07 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-07 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-07 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-07 | 424B3 | PRIMARY DOCUMENT | View Document |
| 2021-01-07 | 424B3 | PRIMARY DOCUMENT | View Document |
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