---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-035328"
form_type: "8-K"
ticker: "TUSK"
cik: "0001679268"
company_name: "MAMMOTH ENERGY SERVICES, INC."
filed_at: "2026-05-15T12:29:32+00:00"
generated_at: "2026-05-15T12:36:35.039488+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Mammoth Energy Services replaces auditor Deloitte with Carr, Riggs & Ingram

## Summary
- Dismissed Deloitte & Touche as independent auditor effective May 13, 2026.
- No disagreements or reportable events occurred during the past fiscal year or subsequent interim period.
- Engaged Carr, Riggs & Ingram as new auditor for fiscal year ending December 31, 2026.
- Deloitte's audit reports for FY2025 did not contain adverse opinion or qualification.

## SEC filing metadata
- accession: 0001628280-26-035328
- form_type: 8-K
- ticker: TUSK
- cik: 0001679268
- company_name: MAMMOTH ENERGY SERVICES, INC.
- filed_at: 2026-05-15T12:29:32+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1679268/000162828026035328/0001628280-26-035328-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1679268/000162828026035328/tusk-20260513.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-035328
- JSON: https://secwatch.observer/filing/0001628280-26-035328.json
- Plain text: https://secwatch.observer/filing/0001628280-26-035328.txt

## Key facts
- Auditor Changes
  MAMMOTH ENERGY SERVICES, INC. engaged Carr, Riggs & Ingram, L.L.C. as its auditor.
  - Action: engagement
  - Auditor: Carr, Riggs & Ingram, L.L.C.
  source text: Also on May 13, 2026, the Audit Committee approved the engagement of Carr, Riggs & Ingram, L.L.C. (“CRI”) as its new independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1679268/000162828026035328/0001628280-26-035328-index.htm
- Auditor Changes
  MAMMOTH ENERGY SERVICES, INC. dismissed Deloitte & Touche LLP as its auditor.
  - Action: dismissal
  - Auditor: Deloitte & Touche LLP
  - Successor: Carr, Riggs & Ingram, L.L.C.
  source text: On May 13, 2026, the Audit Committee of the Board of Directors (the “Audit Committee”) of Mammoth Energy Services, Inc. (the “Company”) approved the dismissal of Deloitte & Touche LLP (“Deloitte”) as the Company’s independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1679268/000162828026035328/0001628280-26-035328-index.htm

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