---
schema_version: "secwatch.filing_event.v1"
accession: "0000724004-26-000082"
form_type: "8-K"
ticker: "MLAB"
cik: "0000724004"
company_name: "MESA LABORATORIES INC /CO/"
filed_at: "2026-07-30T21:18:47+00:00"
generated_at: "2026-07-30T21:20:04.775172+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Mesa Laboratories amends Code of Ethics and Business Conduct

## Summary
- Board approved amended Code on July 30, 2026, effective immediately.
- Updates include revisions to external communications and social media policies.
- Other clarifying, administrative, compliance and procedural updates made.
- Amended Code filed as Exhibit 14.1 to this Form 8-K.

## SEC filing metadata
- accession: 0000724004-26-000082
- form_type: 8-K
- ticker: MLAB
- cik: 0000724004
- company_name: MESA LABORATORIES INC /CO/
- filed_at: 2026-07-30T21:18:47+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.05, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/724004/000072400426000082/0000724004-26-000082-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/724004/000072400426000082/mlab20260729_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000724004-26-000082
- JSON: https://secwatch.observer/filing/0000724004-26-000082.json
- Plain text: https://secwatch.observer/filing/0000724004-26-000082.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.