---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-324548"
form_type: "8-K"
ticker: "ONT"
cik: "0001643615"
company_name: "Onterris, Inc."
filed_at: "2021-11-09T23:59:59+00:00"
generated_at: "2026-06-28T10:45:57.377616+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Montrose Q3 revenue $132.6M (+56.5% YoY); raises FY Adj. EBITDA guidance to $75-80M

## Summary
- Net income of $2.2M vs. $30.7M loss a year ago; Adjusted EBITDA $21.5M, up 28.6%.
- FY 2021 Adjusted EBITDA guidance raised to $75-80M from prior $70-75M.
- Completed October equity offering (2.875M shares, net $169.8M); pro-forma leverage 0.8x.
- Acquired Environmental Chemistry (ECI) in Oct and Horizon Water & Environment in Nov 2021.
- Operating cash flow $13.7M YTD; includes $15.5M in contingent earnout payments.

## SEC filing metadata
- accession: 0001193125-21-324548
- form_type: 8-K
- ticker: ONT
- cik: 0001643615
- company_name: Onterris, Inc.
- filed_at: 2021-11-09T23:59:59+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/1643615/000119312521324548/0001193125-21-324548-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1643615/000119312521324548/d607882d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-324548
- JSON: https://secwatch.observer/filing/0001193125-21-324548.json
- Plain text: https://secwatch.observer/filing/0001193125-21-324548.txt

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