Proto Labs Inc — 4/A Filings
31 4/A filings on record
This page lists all 4/A filings submitted to the SEC by Proto Labs Inc (PRLB), sorted by most recent first. Each row links to the full filing on EdgarLookup. Proto Labs Inc has filed 31 4/A documents with the SEC since 2008. To view all SEC filings by Proto Labs Inc, see the full filings list.
All
10-K
10-Q
10-Q/A
144
3
3/A
4
4/A
424B1
424B4
5
5/A
8-A12B
8-K
8-K/A
ARS
CERTNYS
CORRESP
DEF 14A
DEFA14A
EFFECT
NO ACT
PRE 14A
REGDEX
S-1
S-1/A
S-3ASR
S-8
S-8 POS
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 4/A | FORM 4/A | 0001870293-25-000007 | Dec 3, 2025 | Nov 25, 2025 |
| 4/A | FORM 4 | 0001437749-22-014797 | Jun 10, 2022 | May 18, 2022 |
| 4/A | FORM 4 | 0001437749-22-014796 | Jun 10, 2022 | May 18, 2022 |
| 4/A | FORM 4 | 0001437749-22-014795 | Jun 10, 2022 | May 18, 2022 |
| 4/A | FORM 4 | 0001437749-22-014794 | Jun 10, 2022 | May 18, 2022 |
| 4/A | FORM 4 | 0001437749-22-014793 | Jun 10, 2022 | May 18, 2022 |
| 4/A | FORM 4 | 0001437749-22-014792 | Jun 10, 2022 | May 18, 2022 |
| 4/A | FORM 4 | 0001437749-22-014791 | Jun 10, 2022 | May 18, 2022 |
| 4/A | FORM 4 | 0001437749-22-014790 | Jun 10, 2022 | May 18, 2022 |
| 4/A | FORM 4/A | 0001437749-17-019992 | Nov 30, 2017 | Nov 22, 2017 |
| 4/A | FORM 4/A | 0001437749-17-019990 | Nov 30, 2017 | May 8, 2017 |
| 4/A | FORM 4 | 0001437749-17-010069 | May 25, 2017 | May 18, 2017 |
| 4/A | FORM 4/A | 0001437749-16-025194 | Feb 11, 2016 | Feb 8, 2016 |
| 4/A | FORM 4/A | 0001437749-16-025193 | Feb 11, 2016 | Feb 8, 2016 |
| 4/A | FORM 4/A | 0001437749-16-025192 | Feb 11, 2016 | Feb 8, 2016 |
| 4/A | FORM 4/A | 0001437749-16-025191 | Feb 11, 2016 | Feb 8, 2016 |
| 4/A | FORM 4/A | 0001437749-16-025190 | Feb 11, 2016 | Feb 8, 2016 |
| 4/A | FORM 4/A | 0001437749-16-025189 | Feb 11, 2016 | Feb 8, 2016 |
| 4/A | FORM 4/A | 0001437749-15-011780 | Jun 4, 2015 | May 20, 2015 |
| 4/A | FORM 4/A | 0001437749-15-011779 | Jun 4, 2015 | May 20, 2015 |
| 4/A | FORM 4/A | 0001437749-15-011778 | Jun 4, 2015 | May 20, 2015 |
| 4/A | FORM 4/A | 0001437749-15-011777 | Jun 4, 2015 | May 20, 2015 |
| 4/A | FORM 4/A | 0001437749-15-011776 | Jun 4, 2015 | May 20, 2015 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-13-045706 | Sep 26, 2013 | Apr 30, 2013 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-13-045704 | Sep 26, 2013 | Sep 9, 2013 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-13-029893 | May 31, 2013 | May 23, 2013 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-13-029892 | May 31, 2013 | May 23, 2013 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-13-029891 | May 31, 2013 | May 23, 2013 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-13-029889 | May 31, 2013 | May 23, 2013 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-13-029888 | May 31, 2013 | May 23, 2013 |
| 4/A | FORM 4/A SUBMISSION | 0001209191-13-029886 | May 31, 2013 | May 23, 2013 |