Proto Labs Inc SEC filings PRLB
Proto Labs Inc has 901 filings in SEC EDGAR's recent list, going back to Aug 18, 2008. Its latest annual report, Form ARS, was filed on Apr 8, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 29, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 29, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 4, 2026 | Nov 2, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 3, 2026 |
| 10-Q | Quarterly report | Oct 29, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2026 | Oct 29, 2026 |
| 144 | Notice of proposed sale | Sep 25, 2026 | — |
| 4 | Insider transaction | Sep 25, 2026 | Sep 24, 2026 |
| 144 | Notice of proposed sale | Sep 24, 2026 | — |
| 144 | Notice of proposed sale | Sep 24, 2026 | — |
| 4 | Insider transaction | Sep 18, 2026 | Sep 16, 2026 |
| 144 | Notice of proposed sale | Sep 17, 2026 | — |
| 144 | Notice of proposed sale | Sep 16, 2026 | — |
| 3 | Initial insider ownership | Sep 10, 2026 | Aug 31, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 24, 2026 | Aug 24, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 144 | Notice of proposed sale | Aug 4, 2026 | — |
| S-8 | Employee stock plan registration | Jul 31, 2026 | — |
| 10-Q | Quarterly report | Jul 31, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2026 | Jul 31, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 14, 2026 | — |
| 4 | Insider transaction | Jun 4, 2026 | Jun 2, 2026 |
| 144 | Notice of proposed sale | Jun 1, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | May 28, 2026 | — |
| 4 | Insider transaction | May 27, 2026 | May 23, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 3 | Initial insider ownership | May 22, 2026 | May 18, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 20, 2026 | May 19, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 144 | Notice of proposed sale | May 12, 2026 | — |
| 144 | Notice of proposed sale | May 11, 2026 | — |
| 4 | Insider transaction | May 8, 2026 | May 7, 2026 |
| 144 | Notice of proposed sale | May 7, 2026 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 7, 2026 | May 6, 2026 |
| 10-Q | Quarterly report | May 1, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 1, 2026 | May 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| ARS | Annual report to shareholders | Apr 8, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 8, 2026 | — |
| DEF 14A | Proxy statement | Apr 8, 2026 | May 19, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 10-K | Annual report | Feb 20, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 13, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| 4 | Insider transaction | Feb 12, 2026 | Feb 10, 2026 |
| 4 | Insider transaction | Feb 12, 2026 | Feb 10, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 6, 2026 |
| 144 | Notice of proposed sale | Feb 6, 2026 | — |
| 8-K/A |
Amended current report
Results of operations
|
Feb 6, 2026 | Feb 6, 2026 |
| 8-K |
Current report
Results of operations
|
Feb 6, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Jan 29, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Jan 29, 2026 |
| 144 | Notice of proposed sale | Jan 16, 2026 | — |
| 144 | Notice of proposed sale | Jan 15, 2026 | — |
| 144 | Notice of proposed sale | Jan 8, 2026 | — |
| 144 | Notice of proposed sale | Jan 7, 2026 | — |
| 4/A | Form 4/a | Dec 3, 2025 | Nov 25, 2025 |
| 4 | Insider transaction | Nov 26, 2025 | Nov 25, 2025 |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 4 | Insider transaction | Nov 19, 2025 | Nov 17, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 144 | Notice of proposed sale | Nov 7, 2025 | — |
| 10-Q | Quarterly report | Oct 31, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2025 | Oct 31, 2025 |
| 3 | Initial insider ownership | Oct 15, 2025 | Oct 13, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 3, 2025 | Oct 3, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Aug 7, 2025 | Aug 5, 2025 |
| 4 | Insider transaction | Aug 6, 2025 | Aug 4, 2025 |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2025 | Jul 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 17, 2025 | — |
| 8-K |
Current report
Officer or director change
|
May 30, 2025 | May 24, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2025 | — |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 3 | Initial insider ownership | May 28, 2025 | May 20, 2025 |
| S-8 | Employee stock plan registration | May 27, 2025 | — |
| S-8 | Employee stock plan registration | May 27, 2025 | — |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 4 | Insider transaction | May 22, 2025 | May 20, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Regulation FD disclosure
|
May 21, 2025 | May 20, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 10-Q | Quarterly report | May 2, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 2, 2025 | May 2, 2025 |
| ARS | Annual report to shareholders | Apr 9, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 9, 2025 | — |
| DEF 14A | Proxy statement | Apr 9, 2025 | May 20, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 25, 2025 |
| 10-K | Annual report | Feb 21, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 7, 2025 | Feb 7, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 23, 2025 | — |
| UPLOAD | Letter from the SEC | Dec 12, 2024 | — |
| CORRESP | Letter to the SEC | Dec 11, 2024 | — |
| UPLOAD | Letter from the SEC | Dec 3, 2024 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 8, 2024 | — |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 1, 2024 | Nov 1, 2024 |
| 8-K |
Current report
Exit or restructuring costs, Impairment
|
Oct 25, 2024 | Oct 21, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 18, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Oct 7, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Sep 9, 2024 | Sep 6, 2024 |
| S-8 | Employee stock plan registration | Aug 2, 2024 | — |
| 10-Q | Quarterly report | Aug 2, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2024 | Aug 2, 2024 |
| 8-K |
Current report
Officer or director change
|
Jul 24, 2024 | Jul 22, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2024 | — |
| 4 | Insider transaction | May 24, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 23, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 24, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 22, 2024 | May 20, 2024 |
| 4 | Insider transaction | May 22, 2024 | May 20, 2024 |
| 10-Q | Quarterly report | May 3, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 3, 2024 | May 3, 2024 |
| ARS | Annual report to shareholders | Apr 12, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 12, 2024 | — |
| DEF 14A | Proxy statement | Apr 12, 2024 | May 23, 2024 |
| 10-K | Annual report | Feb 16, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| 4 | Insider transaction | Feb 15, 2024 | Feb 13, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 8-K |
Current report
Results of operations
|
Feb 9, 2024 | Feb 9, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 22, 2024 | — |
| 10-Q | Quarterly report | Nov 3, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2023 | Nov 3, 2023 |
| S-8 | Employee stock plan registration | Aug 4, 2023 | — |
| 10-Q | Quarterly report | Aug 4, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2023 | Aug 4, 2023 |
| SD | Specialized disclosure (conflict minerals) | Jun 5, 2023 | — |
| 4 | Insider transaction | May 23, 2023 | May 20, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 18, 2023 | May 17, 2023 |
| 10-Q | Quarterly report | May 5, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 5, 2023 | May 5, 2023 |
| DEFA14A | Additional proxy material | Apr 4, 2023 | — |
| DEF 14A | Proxy statement | Apr 4, 2023 | — |
| 10-K | Annual report | Feb 21, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 10, 2023 | Feb 7, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2023 | — |
| 4 | Insider transaction | Dec 5, 2022 | Dec 1, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 21, 2022 | Nov 17, 2022 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Nov 15, 2022 | Nov 15, 2022 |
| 10-Q | Quarterly report | Nov 4, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2022 | Nov 4, 2022 |
| 4 | Insider transaction | Sep 13, 2022 | Sep 9, 2022 |
| 3 | Initial insider ownership | Sep 13, 2022 | Sep 9, 2022 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 30, 2022 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 30, 2022 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 30, 2022 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Fabricated Structural Metal Products (SIC 3440)
- Listed as
- PRLB (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- MN
- Headquarters
- Maple Plain, MN
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1443669
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.