---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-102342"
form_type: "8-K"
ticker: "MNTK"
cik: "0001826600"
company_name: "Montauk Renewables, Inc."
filed_at: "2026-03-11T23:59:59+00:00"
generated_at: "2026-05-15T15:01:53.427743+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.82
calibrated_materiality_score: 0.82
confidence: "high"
source: SEC EDGAR
---

# Montauk Renewables FY2025 net income drops 82%; revenue flat at $176.4M

## Summary
- Revenue of $176.4M flat YoY; net income of $1.7M down 82%; non-GAAP Adjusted EBITDA of $35.6M down 16.5%.
- RNG production 5.6M MMBtu (+1% YoY); RINs sold 44.1M (+20.5% YoY); avg RIN price fell 29% to $2.33.
- 2026 guidance: RNG rev $175-190M, production 5.8-6.1M MMBtu; RE rev $35-41M, production 195-207K MWh.
- GreenWave JV contributed $1.5M; NCUC denied swine REC waiver request, raising compliance obligations.

## SEC filing metadata
- accession: 0001193125-26-102342
- form_type: 8-K
- ticker: MNTK
- cik: 0001826600
- company_name: Montauk Renewables, Inc.
- filed_at: 2026-03-11T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.82
- calibrated_materiality_score: 0.82
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1826600/000119312526102342/0001193125-26-102342-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1826600/000119312526102342/mntk-20260311.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-102342
- JSON: https://secwatch.observer/filing/0001193125-26-102342.json
- Plain text: https://secwatch.observer/filing/0001193125-26-102342.txt

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