---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-065813"
form_type: "8-K"
ticker: "ONT"
cik: "0001643615"
company_name: "Onterris, Inc."
filed_at: "2025-05-07T23:59:59+00:00"
generated_at: "2026-05-22T08:17:23.160034+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Montrose Environmental Q1 revenue $177.8M (record); raises 2025 EBITDA guidance to $103-110M

## Summary
- Revenue $177.8M (+14.5% YoY); net loss $19.4M ($0.64 LPS); Adj EPS $0.07.
- Consolidated Adj EBITDA $19.0M (record Q1), up 12.5% YoY; margin 10.7%.
- Raised full-year 2025 Adj EBITDA guidance to $103-110M from $101-108M; revenue reaffirmed $735-785M.
- Board approves $40M stock repurchase program; redeemed $60M preferred equity in April.
- Operating cash flow $5.5M vs -$22.0M prior year; remaining Tustin receivable ~$7.5M.

## SEC filing metadata
- accession: 0000950170-25-065813
- form_type: 8-K
- ticker: ONT
- cik: 0001643615
- company_name: Onterris, Inc.
- filed_at: 2025-05-07T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1643615/000095017025065813/0000950170-25-065813-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1643615/000095017025065813/meg-20250507.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-065813
- JSON: https://secwatch.observer/filing/0000950170-25-065813.json
- Plain text: https://secwatch.observer/filing/0000950170-25-065813.txt

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