---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-018585"
form_type: "8-K"
ticker: "MLAB"
cik: "0000724004"
company_name: "MESA LABORATORIES INC /CO/"
filed_at: "2025-05-28T23:59:59+00:00"
generated_at: "2026-05-20T09:11:23.466558+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Mesa Labs Q4 revenue up 5.5% but net loss widens to $7.1M

## Summary
- Total revenues $62.1M, up 5.5% YoY; core organic growth 6.3%.
- GAAP net loss $7.1M ($1.31 diluted EPS) vs loss $3.6M in prior-year quarter.
- Adjusted operating income excluding unusual items $12.3M, down 18% YoY.
- Full fiscal year revenue $241M, up 11.5%; core organic growth 5.0%.
- SDC division core organic growth 10.3%; CG division continued decline in China.

## SEC filing metadata
- accession: 0001437749-25-018585
- form_type: 8-K
- ticker: MLAB
- cik: 0000724004
- company_name: MESA LABORATORIES INC /CO/
- filed_at: 2025-05-28T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/724004/000143774925018585/0001437749-25-018585-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/724004/000143774925018585/mlab20250527_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-018585
- JSON: https://secwatch.observer/filing/0001437749-25-018585.json
- Plain text: https://secwatch.observer/filing/0001437749-25-018585.txt

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