---
schema_version: "secwatch.filing_event.v1"
accession: "0001679268-21-000063"
form_type: "8-K"
ticker: "TUSK"
cik: "0001679268"
company_name: "MAMMOTH ENERGY SERVICES, INC."
filed_at: "2021-11-03T23:59:59+00:00"
generated_at: "2026-06-28T14:13:48.875879+00:00"
event_type: "litigation"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Mammoth Energy Services derivative lawsuit settled for $1.5M from D&O insurers

## Summary
- Preliminary approval granted on Oct 28, 2021; final hearing set for Jan 7, 2022.
- Insurers to pay $1.5M to Mammoth for general corporate purposes; governance reforms to be adopted.
- Separate $0.5M for plaintiffs' attorneys' fees, subject to court approval.
- Derivative action alleged breaches of fiduciary duty related to Puerto Rico PREPA contracts.
- Defendants deny all allegations; settlement avoids further litigation costs and risks.

## SEC filing metadata
- accession: 0001679268-21-000063
- form_type: 8-K
- ticker: TUSK
- cik: 0001679268
- company_name: MAMMOTH ENERGY SERVICES, INC.
- filed_at: 2021-11-03T23:59:59+00:00
- event_type: litigation
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1679268/000167926821000063/0001679268-21-000063-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1679268/000167926821000063/tusk-20211028.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001679268-21-000063
- JSON: https://secwatch.observer/filing/0001679268-21-000063.json
- Plain text: https://secwatch.observer/filing/0001679268-21-000063.txt

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