LongONTSeptember 30, 2026

Conestoga Capital Advisors, LLC on Onterris, Inc.

Thesis

Onterris delivers environmental testing, consulting and remediation services to industrial and government clients. Revenue declined due to unusually low emergency-response activity, reduced pass-through work and temporary regulatory exemptions. The manager notes that much of the lost revenue was lower-margin and that expense management still produced higher EBITDA margins. Conestoga sees lasting value in the core business, improving profitability and free cash generation.

“We continue to see value in the underlying business given growth in its core operations, improving profitability and strong cash generation”
Conestoga Capital Advisors, LLC — Conestoga Quarterly Commentary — 3Q26

Key risks

  • Exceptionally low environmental emergency-response demand.
  • Temporary regulatory waivers reduced customer demand for specific services.
  • The company cut its revenue and EBITDA outlook after reduced activity.