8-K: Onterris Reports Q1 2026 Results, Reaffirms Full-Year Guidance

Onterris, Inc. announced its first quarter 2026 financial results, reporting a decrease in revenue but an improvement in net loss, while reiterating its full-year financial guidance.

Summary

• Onterris, Inc. reported first quarter 2026 revenue of $168.5 million, a decrease of $9.3 million compared to the prior year, primarily due to lower emergency response revenue and weather-related impacts.
• The company's net loss improved to $12.7 million ($0.35 per diluted share) from $19.4 million ($0.64 per diluted share) in the first quarter of 2025, attributed to operating efficiencies.
• Adjusted Net Income was $4.6 million ($0.12 per diluted share) in Q1 2026, down from $5.8 million in Q1 2025.
• Consolidated Adjusted EBITDA was $17.8 million, a decrease of $1.2 million from the prior year, representing 10.6% of revenue.
• Operating cash flow was negative $11.6 million and free cash flow was negative $17.2 million, largely due to higher bonus payments from 2025 performance.
• The company reiterated its full-year 2026 guidance for Consolidated Adjusted EBITDA ($125.0 million to $130.0 million) and revenue ($840.0 million to $900.0 million).
• On April 17, 2026, Montrose Environmental Group, Inc. rebranded to Onterris, Inc., and realigned its reportable segments into a new 'Consulting and Treatment' segment.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral to slightly cautious sentiment, as the company reported a revenue decline and lower EBITDA, but offset this with improved net loss and reiterated full-year guidance, suggesting expected performance recovery.

Positives

• Net loss improved year-over-year to $12.7 million from $19.4 million, with a corresponding improvement in diluted net loss per share to $0.35 from $0.64.
• Operating efficiency gains contributed to the improved net loss, despite lower revenue.
• Full-year 2026 guidance for Consolidated Adjusted EBITDA and revenue remains unchanged, indicating management's confidence in future performance.
• The company expects approximately 10% growth in Consolidated Adjusted EBITDA and 8% organic growth in revenue for full-year 2026.
• Consolidated Adjusted EBITDA margin is projected to be approximately 15% for full-year 2026, representing a 100 basis-point expansion compared to 2025.
• The company is committed to converting at least 60% of its annual Consolidated Adjusted EBITDA to operating cash flow in 2026.
• The rebranding to Onterris, Inc. is intended to strengthen collaboration, improve cross-selling, and optimize labor utilization.

Negatives

• Revenue decreased by $9.3 million (5.2%) to $168.5 million in Q1 2026 compared to Q1 2025.
• Lower emergency response revenue ($5.8 million decrease) and weather-related revenue impacts ($5.1 million decrease) were primary drivers of the revenue decline.
• Consolidated Adjusted EBITDA decreased by $1.2 million to $17.8 million.
• Operating cash flow was negative $11.6 million, a significant decrease from positive $5.5 million in the prior year.
• Free cash flow was negative $17.2 million, compared to negative $0.4 million in the prior year.
• The leverage ratio was 2.8x as of March 31, 2026.
• Adjusted Net Income decreased to $4.6 million from $5.8 million in the prior year.

Risks

• Unseasonably severe winter weather in North America limited field activity and delayed lab volumes in Q1 2026.
• Lower environmental emergency response activity impacted revenue.
• The company's financial performance is subject to risks and uncertainties, many of which are beyond its control, that could cause actual results to differ materially from forward-looking statements.
• The company's leverage ratio was 2.8x as of March 31, 2026, which could limit future borrowing capacity or increase financial risk.
• The company plans to restart smaller, bolt-on acquisitions, which carry inherent integration and financial risks.

Future Outlook

Full-year 2026 guidance remains unchanged, with Consolidated Adjusted EBITDA expected between $125.0 million and $130.0 million, representing approximately 10% growth at the midpoint. Revenue guidance is also unchanged at $840.0 million to $900.0 million, representing approximately 8% organic growth at the midpoint. The company anticipates Consolidated Adjusted EBITDA margin to be approximately 15% for the full year. Second quarter 2026 revenue is projected to be between $190 million and $210 million, with Consolidated Adjusted EBITDA margin expected between 16% and 18%. The company is committed to converting at least 60% of its annual Consolidated Adjusted EBITDA to operating cash flow in 2026 and plans to pursue accretive bolt-on acquisitions.

Management Comments

• "We delivered first quarter Adjusted EBITDA and margin consistent with our expectations, despite lower revenue, reflecting continued operating efficiency gains."
• "First quarter revenue was impacted by timing-related factors, most notably unseasonably severe winter weather in North America that limited field activity and delayed lab volumes, as well as lower environmental emergency response activity. We view both dynamics as transitory, with underlying demand remaining strong and continuing to grow across our core services."
• "Our full year outlook is unchanged, with performance expected to build through the year. This confidence is supported by recent awards, visibility into our project pipeline and continued operational discipline."
• "We are also excited about the launch of our Onterris brand, which aligns our capabilities under a single platform. This strategic evolution enhances how we serve our clients, strengthens cross-selling, and accelerates long-term growth, while reinforcing our commitment to clients seeking the next generation of environmental solutions."

Industry Context

StockSavvy.ai notes that Onterris's Q1 2026 results reflect challenges common in the environmental services sector, such as weather-related disruptions and fluctuations in emergency response demand. The company's reiteration of full-year guidance and focus on operating efficiencies and strategic rebranding suggest a proactive approach to navigating these industry dynamics and positioning for future growth.

Comparison to Industry Standards

• The reported Consolidated Adjusted EBITDA margin of 10.6% for Q1 2026 is below the projected full-year midpoint of 15%, indicating a typical seasonal ramp-up in performance expected in the latter half of the year for environmental services companies.
• The revenue decrease of 5.2% in Q1 2026, while concerning, is presented by the company as primarily due to transient factors like weather and emergency response timing, which can be volatile in the industry.
• The company's commitment to converting at least 60% of annual Consolidated Adjusted EBITDA to operating cash flow aligns with industry best practices for cash generation, though Q1 2026 free cash flow was negative due to specific payment timing.

Stakeholder Impact

• Shareholders: The reiteration of full-year guidance provides some stability, but the Q1 revenue decline and lower EBITDA may cause concern regarding short-term performance.
• Employees: The rebranding aims to improve collaboration and utilization, potentially benefiting employees through clearer strategy and operational focus.
• Customers: The rebranding to Onterris, Inc. is intended to enhance client service and cross-selling opportunities, suggesting a focus on improving customer experience.
• Creditors: The leverage ratio of 2.8x and negative free cash flow in Q1 may be monitored by creditors, though the company's commitment to cash flow conversion is a positive indicator.

Next Steps

• Host investor webcast and conference call on May 7, 2026, to discuss Q1 2026 results.
• Continue to execute on full-year 2026 guidance for Consolidated Adjusted EBITDA and revenue.
• Pursue smaller, bolt-on, and highly accretive acquisitions over the course of 2026, subject to valuation, capital allocation priorities, and leverage.
• Focus on converting at least 60% of annual Consolidated Adjusted EBITDA to operating cash flow in 2026.

Key Dates

Recommendation

The company's Q1 results show a revenue decline and lower EBITDA, primarily attributed to temporary factors. However, the improvement in net loss and the reiteration of full-year guidance suggest that the core business remains on track. The strategic rebranding and commitment to acquisitions indicate future growth potential. Given the mixed results and the reliance on future performance to meet guidance, a 'hold' recommendation is appropriate for seasoned investors, awaiting further evidence of sustained operational improvement and successful acquisition integration.

Keywords

Onterris, Montrose Environmental Group, 8-K, Quarterly Results, Environmental Solutions, Adjusted EBITDA, Revenue, Net Loss