Mesa Laboratories Inc /CO/ SEC filings MLAB
Mesa Laboratories Inc /CO/ has 1,005 filings in SEC EDGAR's recent list, going back to Apr 7, 2011. Its latest annual report, Form 10-K, was filed on Jun 3, 2026 for the period ended Mar 31, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 10, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 13, 2026 (exit or restructuring costs, regulation fd disclosure). The company's fiscal year ends on March 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 29, 2026 | Oct 13, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 27, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 9, 2026 | — |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 11, 2026 | Sep 9, 2026 |
| 144 | Notice of proposed sale | Aug 27, 2026 | — |
| 144 | Notice of proposed sale | Aug 21, 2026 | — |
| 4 | Insider transaction | Aug 17, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 7, 2026 | — |
| 4 | Insider transaction | Jun 23, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 18, 2026 |
| 144 | Notice of proposed sale | Jun 22, 2026 | — |
| 144 | Notice of proposed sale | Jun 22, 2026 | — |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 3 | Initial insider ownership | Jun 16, 2026 | Jun 15, 2026 |
| 144 | Notice of proposed sale | Jun 16, 2026 | — |
| 144 | Notice of proposed sale | Jun 16, 2026 | — |
| 144 | Notice of proposed sale | Jun 16, 2026 | — |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4/A | Primary document | May 19, 2026 | Apr 14, 2026 |
| 4 | Insider transaction | Apr 24, 2026 | Apr 14, 2026 |
| 3 | Initial insider ownership | Apr 24, 2026 | Apr 13, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 15, 2026 | — |
| 4 | Insider transaction | Apr 2, 2026 | Mar 31, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 13, 2026 | — |
| 4 | Insider transaction | Mar 10, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Dec 5, 2025 | Dec 2, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 31, 2025 | — |
| 4 | Insider transaction | Oct 28, 2025 | Oct 27, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 2, 2025 | — |
| 4 | Insider transaction | Aug 18, 2025 | Aug 18, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 18, 2025 | Aug 15, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 18, 2025 | — |
| 4 | Insider transaction | Jun 25, 2025 | Jun 21, 2025 |
| 4 | Insider transaction | Jun 25, 2025 | Jun 21, 2025 |
| 4 | Insider transaction | Jun 24, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 18, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 18, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 18, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 15, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 15, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 15, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 15, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 15, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 15, 2025 |
| 144 | Notice of proposed sale | Jun 16, 2025 | — |
| 144 | Notice of proposed sale | Jun 16, 2025 | — |
| 144 | Notice of proposed sale | Jun 16, 2025 | — |
| 4 | Insider transaction | Jun 11, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 11, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 11, 2025 | Jun 10, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 30, 2025 | — |
| 4 | Insider transaction | Mar 24, 2025 | Mar 19, 2025 |
| 144 | Notice of proposed sale | Mar 19, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 28, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 10, 2025 | — |
| 4 | Insider transaction | Nov 25, 2024 | Nov 19, 2024 |
| 4 | Insider transaction | Oct 29, 2024 | Oct 27, 2024 |
| 144 | Notice of proposed sale | Oct 29, 2024 | — |
| 144 | Notice of proposed sale | Oct 28, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 15, 2024 | — |
| 4 | Insider transaction | Sep 16, 2024 | Sep 13, 2024 |
| 144 | Notice of proposed sale | Sep 13, 2024 | — |
| 4 | Insider transaction | Sep 6, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 6, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Jun 21, 2024 | Jun 18, 2024 |
| 4 | Insider transaction | Jun 21, 2024 | Jun 18, 2024 |
| 4 | Insider transaction | Jun 21, 2024 | Jun 18, 2024 |
| 4 | Insider transaction | Jun 17, 2024 | Jun 14, 2024 |
| 4 | Insider transaction | Jun 17, 2024 | Jun 14, 2024 |
| 4 | Insider transaction | Jun 17, 2024 | Jun 14, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Mar 26, 2024 | Jan 8, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 15, 2024 |
| 3 | Initial insider ownership | Feb 16, 2024 | Jan 8, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 22, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 5, 2024 | — |
| 4 | Insider transaction | Dec 19, 2023 | Dec 15, 2023 |
| 144 | Notice of proposed sale | Dec 15, 2023 | — |
| 4 | Insider transaction | Nov 14, 2023 | Nov 9, 2023 |
| 4 | Insider transaction | Sep 19, 2023 | Sep 14, 2023 |
| 4 | Insider transaction | Sep 14, 2023 | Sep 13, 2023 |
| 144 | Notice of proposed sale | Sep 13, 2023 | — |
| 4 | Insider transaction | Sep 6, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Sep 6, 2023 | Sep 6, 2023 |
| 4 | Insider transaction | Sep 6, 2023 | Sep 1, 2023 |
| 4 | Insider transaction | Sep 6, 2023 | Sep 1, 2023 |
| 4 | Insider transaction | Sep 6, 2023 | Sep 1, 2023 |
| 4 | Insider transaction | Sep 5, 2023 | Sep 1, 2023 |
| 4 | Insider transaction | Sep 5, 2023 | Sep 1, 2023 |
| 4 | Insider transaction | Sep 5, 2023 | Sep 1, 2023 |
| 4 | Insider transaction | Sep 5, 2023 | Sep 1, 2023 |
| 144 | Notice of proposed sale | Sep 1, 2023 | — |
| 4 | Insider transaction | Aug 16, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Jun 26, 2023 | Jun 21, 2023 |
| 4 | Insider transaction | Jun 26, 2023 | Jun 21, 2023 |
| 4 | Insider transaction | Jun 26, 2023 | Jun 21, 2023 |
| 4 | Insider transaction | Jun 21, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Jun 21, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Jun 21, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Jun 21, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Mar 27, 2023 | Mar 22, 2023 |
| 144 | Notice of proposed sale | Mar 24, 2023 | — |
| 144 | Notice of proposed sale | Mar 22, 2023 | — |
| 4 | Insider transaction | Mar 16, 2023 | Mar 15, 2023 |
| 144 | Notice of proposed sale | Mar 15, 2023 | — |
| 4 | Insider transaction | Mar 9, 2023 | Mar 9, 2023 |
| 144 | Notice of proposed sale | Mar 9, 2023 | — |
| 4 | Insider transaction | Feb 9, 2023 | Feb 9, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 4 | Insider transaction | Feb 6, 2023 | Feb 2, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 2, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 27, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2023 | — |
| 4 | Insider transaction | Jan 25, 2023 | Jan 23, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 20, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 18, 2023 | — |
| 4/A | Primary document | Jan 17, 2023 | Jan 13, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 13, 2023 |
| 4 | Insider transaction | Dec 14, 2022 | Nov 15, 2022 |
| 4 | Insider transaction | Dec 9, 2022 | Dec 8, 2022 |
| 4 | Insider transaction | Nov 29, 2022 | Nov 28, 2022 |
| 4 | Insider transaction | Nov 21, 2022 | Nov 11, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 18, 2022 | — |
| 4 | Insider transaction | Sep 2, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Sep 2, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Sep 2, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Sep 2, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Sep 2, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Sep 2, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Sep 2, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Sep 2, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Aug 19, 2022 | Aug 18, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 15, 2022 |
| 4/A | Primary document | Aug 17, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 17, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 16, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 9, 2022 | Aug 9, 2022 |
| 3 | Initial insider ownership | Jul 11, 2022 | Jun 23, 2022 |
| 4 | Insider transaction | Jul 6, 2022 | Jul 5, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 17, 2022 | Jun 15, 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
- Industrial Instruments For Measurement, Display, and Control (SIC 3823)
- Listed as
- MLAB (Nasdaq)
- Fiscal year ends
- March 31
- Incorporated in
- CO
- Headquarters
- Lakewood, CO
- SEC filer status
- Accelerated filer
- SEC CIK
- 724004
- Former names
- MESA LABORATORIES INC /CO (until Aug 28, 2020)
Other Industrial Instruments For Measurement, Display, and Control companies
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All 18 Industrial Instruments For Measurement, Display, and Control companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.