Proto Labs Inc - PRLB
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 43
Latest filed: May 22, 2026
| Form | Count |
|---|---|
| 4 | 22 |
| 144 | 10 |
| 8-K | 4 |
| SCHEDULE 13G/A | 3 |
| SCHEDULE 13G | 2 |
| 8-K/A | 1 |
| 4/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| May 22, 2026 | 4 | May 20, 2026 | 0001628280-26-037722 | View |
| May 22, 2026 | 4 | May 20, 2026 | 0001628280-26-037725 | View |
| May 21, 2026 | 4 | May 19, 2026 | 0001628280-26-037232 | View |
| May 21, 2026 | 4 | May 19, 2026 | 0001628280-26-037234 | View |
| May 21, 2026 | 4 | May 19, 2026 | 0001628280-26-037243 | View |
| May 21, 2026 | 4 | May 19, 2026 | 0001628280-26-037245 | View |
| May 21, 2026 | 4 | May 19, 2026 | 0001628280-26-037247 | View |
| May 21, 2026 | 4 | May 19, 2026 | 0001628280-26-037251 | View |
| May 20, 2026 | 8-K | May 19, 2026 | 0001443669-26-000028 | View |
| May 15, 2026 | SCHEDULE 13G/A | — | 0001050442-26-000017 | View |
| May 13, 2026 | 4 | May 11, 2026 | 0001628280-26-034651 | View |
| May 12, 2026 | 144 | — | 0001950047-26-004397 | View |
| May 11, 2026 | 144 | — | 0001950047-26-004344 | View |
| May 08, 2026 | 4 | May 07, 2026 | 0001628280-26-032958 | View |
| May 07, 2026 | 144 | — | 0001950047-26-004197 | View |
| May 07, 2026 | 8-K | May 06, 2026 | 0001104659-26-056700 | View |
| May 01, 2026 | 8-K | May 01, 2026 | 0001443669-26-000023 | View |
| Apr 30, 2026 | SCHEDULE 13G | — | 0002100119-26-000934 | View |
| Apr 29, 2026 | SCHEDULE 13G | — | 0002100121-26-000620 | View |
| Mar 27, 2026 | SCHEDULE 13G/A | — | 0000102909-26-002173 | View |
| Feb 27, 2026 | 4 | Feb 25, 2026 | 0001628280-26-012829 | View |
| Feb 27, 2026 | 4 | Feb 25, 2026 | 0001628280-26-012831 | View |
| Feb 27, 2026 | 4 | Feb 25, 2026 | 0001628280-26-012832 | View |
| Feb 27, 2026 | 4 | Feb 25, 2026 | 0001628280-26-012833 | View |
| Feb 18, 2026 | 4 | Feb 13, 2026 | 0001628280-26-009129 | View |
| Feb 18, 2026 | 4 | Feb 13, 2026 | 0001628280-26-009131 | View |
| Feb 17, 2026 | SCHEDULE 13G/A | — | 0001050442-26-000006 | View |
| Feb 12, 2026 | 4 | Feb 10, 2026 | 0001894753-26-000003 | View |
| Feb 12, 2026 | 4 | Feb 10, 2026 | 0001870293-26-000004 | View |
| Feb 09, 2026 | 4 | Feb 06, 2026 | 0001628280-26-006501 | View |
| Feb 06, 2026 | 8-K | Feb 06, 2026 | 0001443669-26-000003 | View |
| Feb 06, 2026 | 8-K/A | Feb 06, 2026 | 0001443669-26-000006 | View |
| Feb 06, 2026 | 144 | — | 0001950047-26-001001 | View |
| Feb 04, 2026 | 4 | Jan 29, 2026 | 0001628280-26-005552 | View |
| Feb 04, 2026 | 4 | Jan 29, 2026 | 0001628280-26-005553 | View |
| Jan 16, 2026 | 144 | — | 0001950047-26-000511 | View |
| Jan 15, 2026 | 144 | — | 0001950047-26-000488 | View |
| Jan 08, 2026 | 144 | — | 0001950047-26-000264 | View |
| Jan 07, 2026 | 144 | — | 0001950047-26-000225 | View |
| Dec 03, 2025 | 4/A | Nov 25, 2025 | 0001870293-25-000007 | View |
| Nov 26, 2025 | 4 | Nov 25, 2025 | 0001870293-25-000004 | View |
| Nov 25, 2025 | 144 | — | 0001950047-25-009352 | View |
| Nov 25, 2025 | 144 | — | 0001950047-25-009385 | View |