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8-K ·Filed May 15, 2026

TUSK

MAMMOTH ENERGY SERVICES, INC.
NEUTRAL
Impact 3/10
Horizonweeks Processed5mo ago SEC0001628280-26-035328
8-K material event: Items 4.01
Actionable Insight • Neutral

Monitor the next 10-Q for any restatements, material weaknesses, or auditor disagreements that may surface under CRI's scrutiny. The change from a Big 4 firm to a regional auditor increases audit risk perception; watch for insider selling or further disclosures.

DirectionNeutral
Confidencehigh
Horizonweeks
Final — all horizons settled through T+60d ⚠ clustered
TUSK ▲ +2.50% at T+60d
NEUTRAL call +2.50% · α vs SPY -2.02% · entry $3.20 → $3.28
Entry = T+0 close
May 15, 2026
via day close
T+1d
-0.31%
call -0.31% · α -0.25%
$3.19
settled 5mo ago
T+5d
+1.56%
call +1.56% · α +0.60%
$3.25
settled 5mo ago
T+20d
-3.44%
call -3.44% · α -5.56%
$3.09
settled 4mo ago
T+60d
+2.50%
call +2.50% · α -2.02%
$3.28
settled 3mo ago

Price Chart

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Executive Summary

Mammoth Energy Services dismissed Deloitte & Touche as its independent auditor and engaged regional firm Carr, Riggs & Ingram. The filing states no disagreements or reportable events, and Deloitte's audit opinion for FY2025 was unqualified. Auditor changes from a Big 4 firm to a smaller one are often viewed as a red flag, but the company's explicit denial of any accounting disagreements may temper immediate concern.

Key Facts

  • Audit Committee dismissed Deloitte & Touche LLP on May 13, 2026.
  • Engaged Carr, Riggs & Ingram, L.L.C. (CRI) as new independent auditor.
  • No disagreements with Deloitte on accounting principles or practices.
  • No reportable events as defined by Item 304(a)(1)(v) of Regulation S-K.
  • Deloitte's FY2025 audit report was unqualified with no adverse opinion or modifications.

Financial Impact

Not specified

Risk Factors

  • Potential undisclosed accounting issues despite filing's denial of disagreements
  • Reduced audit quality or credibility with smaller auditor
  • Possible increased scrutiny from regulators or lenders

Market Snapshot

Exchange
Nasdaq
Sector
Oil & Gas Field Services, NEC
Analyst Consensus
86% bullish (7 analysts)

Investment Themes

Traditional Energy

Documents Analyzed

This report is based on 5 SEC documents filed with EDGAR.

DocumentAccession Number
8-K Filing (Primary)0001628280-26-035328
Document: a2026-05x15ex161dtconcurre.htm0001628280-26-035328
Document: 0001628280-26-035328-index-headers.html0001628280-26-035328
Document: 0001628280-26-035328-index.html0001628280-26-035328
Document: 0001628280-26-035328.txt0001628280-26-035328
7 reports for TUSK
Performance horizon
33% Hit rate @ T+20 1 of 3 directional calls Went positive at some point 1 of 3 best @ T+20▲ +14.78%May 11, 2026
Filters
Rows
Reports for TUSK — sortable, filterable
TypeNow
Oct 14, 2026
12d ago
Press Release
NEUTRAL ★ 1/10
$2.71awaiting T+20—$2.78 (+2.58%)
Aug 7, 2026
11w ago
8-K
BULLISH ★ 6/10
$3.39 $3.12▼ −7.96%▼ −7.57%$2.78 (−17.99%)
Aug 7, 2026
11w ago
Press Release
BULLISH ★ 7/10
$3.39 $3.12▼ −7.96%▼ −7.57%$2.78 (−17.99%)
Jun 11, 2026
19w ago
Institutional Cluster
NEUTRAL ★ 3/10
$3.19 $2.88▼ −9.72%▼ −11.61%$2.78 (−12.85%)
May 15, 2026
23w ago
DEFA14A
NEUTRAL ★ 3/10
$3.19 $3.10▼ −2.82%▼ −4.40%$2.78 (−12.85%)
May 15, 2026
23w ago
8-K
NEUTRAL ★ 3/10
$3.20 $3.09▼ −3.44%▼ −5.56%$2.78 (−13.13%)
May 11, 2026
24w ago
8-K
BULLISH ★ 7/10
$2.91 $3.34▲ +14.78%▲ +15.08%$2.78 (−4.47%)
Showing 7 of 7

US Market Status

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Report published May 15, 2026