---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-067105"
form_type: "8-K"
ticker: "MNTK"
cik: "0001826600"
company_name: "Montauk Renewables, Inc."
filed_at: "2025-05-08T23:59:59+00:00"
generated_at: "2026-05-22T05:23:34.222608+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Montauk Q1 net loss swings to $0.5M; announces Rumpke relocation and Blue Granite impairment

## Summary
- Revenues $42.6M (+9.8% YoY); net loss of $0.5M vs net income $1.9M in Q1 2024; Adj. EBITDA $8.8M (-7.2%).
- RINs sold 9.9M (+25.3% YoY); avg RIN price $2.46 vs $3.25; RNG production flat at 1.4M MMBtu.
- Full-year 2025 guidance: RNG revenue $150-170M, RNG production 5.8-6.0M MMBtu.
- Rumpke RNG relocation planned; estimated capex $80-110M; commissioning targeted 2028.
- Blue Granite RNG project: utility will no longer accept RNG, equipment impairment recognized.

## SEC filing metadata
- accession: 0000950170-25-067105
- form_type: 8-K
- ticker: MNTK
- cik: 0001826600
- company_name: Montauk Renewables, Inc.
- filed_at: 2025-05-08T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1826600/000095017025067105/0000950170-25-067105-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1826600/000095017025067105/mntk-20250508.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-067105
- JSON: https://secwatch.observer/filing/0000950170-25-067105.json
- Plain text: https://secwatch.observer/filing/0000950170-25-067105.txt

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