---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-060315"
form_type: "8-K"
ticker: "ONT"
cik: "0001643615"
company_name: "Onterris, Inc."
filed_at: "2023-11-07T23:59:59+00:00"
generated_at: "2026-06-08T15:42:38.063669+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Montrose Environmental Q3 revenue up 28.9% to $167.9M; Adj. EBITDA up 36.2%

## Summary
- Revenue $167.9M, up 28.9% YoY; net loss $(7.5)M vs $(5.7)M prior year.
- Consolidated Adjusted EBITDA $23.3M, up 36.2% from $17.1M; margin 13.9% vs 13.1%.
- Adjusted net income $9.4M ($0.18 per share) vs $7.8M ($0.12) prior year.
- Operating cash flow $41.5M YTD, up 408% from $8.2M; total liquidity $148.2M.
- Reaffirms FY2023 revenue $590M-$640M and Adj. EBITDA $75M-$81M guidance.

## SEC filing metadata
- accession: 0000950170-23-060315
- form_type: 8-K
- ticker: ONT
- cik: 0001643615
- company_name: Onterris, Inc.
- filed_at: 2023-11-07T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1643615/000095017023060315/0000950170-23-060315-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1643615/000095017023060315/meg-20231107.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-060315
- JSON: https://secwatch.observer/filing/0000950170-23-060315.json
- Plain text: https://secwatch.observer/filing/0000950170-23-060315.txt

## Key facts
- Earnings Releases
  Onterris, Inc. reported the first nine months of 2023 results: revenue $458.5 million, net income $(29.4) million, EPS $(1.39) per share.
  - Period: the first nine months of 2023
  - Revenue: $458.5 million
  - Net income: $(29.4) million
  - EPS: $(1.39) per share
  - Result: reported results
  source text: Total revenue in the first nine months of 2023 increased 13.2% to $458.5 million compared to $404.9 million in the prior year period.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1643615/000095017023060315/0000950170-23-060315-index.htm
- Earnings Releases
  Onterris, Inc. reported for the fiscal quarter ended September 30, 2023 results: revenue $167.9 million, net income $(7.5) million, EPS $(0.39) per share. Guidance reaffirmed.
  - Period: for the fiscal quarter ended September 30, 2023
  - Revenue: $167.9 million
  - Net income: $(7.5) million
  - EPS: $(0.39) per share
  - Guidance: reaffirmed
  - Result: reported results
  source text: investors, and a reconciliation for historical periods to the most directly comparable GAAP measures. Third Quarter 2023 Results Total revenue in the third quarter of 2023 was $167.9 million compared to $130.3 million in the prior year quarter, an increase of 28.9%. The increase in revenues was primarily due to the acquisition of Matrix, organic growth in the
  evidence_url: https://www.sec.gov/Archives/edgar/data/1643615/000095017023060315/0000950170-23-060315-index.htm

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