---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-22-011624"
form_type: "8-K"
ticker: "ONT"
cik: "0001643615"
company_name: "Onterris, Inc."
filed_at: "2022-06-14T23:59:59+00:00"
generated_at: "2026-06-25T02:01:37.488931+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Montrose Environmental Group Discloses Ransomware Attack on Enthalpy Analytical Lab Network

## Summary
- Attack primarily affected computers and servers within the Enthalpy Analytical laboratory network.
- Company took immediate action, suspended affected systems, notified law enforcement, and engaged third-party experts.
- Backup data and cloud-based enterprise systems, including email, are believed unaffected.
- Company expects delays in certain lab results but does not anticipate major disruption to other services.

## SEC filing metadata
- accession: 0000950170-22-011624
- form_type: 8-K
- ticker: ONT
- cik: 0001643615
- company_name: Onterris, Inc.
- filed_at: 2022-06-14T23:59:59+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1643615/000095017022011624/0000950170-22-011624-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1643615/000095017022011624/meg-20220614.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-22-011624
- JSON: https://secwatch.observer/filing/0000950170-22-011624.json
- Plain text: https://secwatch.observer/filing/0000950170-22-011624.txt

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