Mammoth Energy Services, Inc.

Historical 13F Holders

Symbol
TUSK
CUSIP
56155L108
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 56155L108 since 12/18/2024, largest first.

Filer % of Class Filed
Wexford Capital LP 13G/A
25.1% 6/22/2026
Event 6/17/2026
Charles E. Davidson 13G
13.4% 6/22/2026
Event 6/17/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (1)
Valueworks LLC 13G/A
4.96% 8/14/2025
Event 6/30/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 1 1.00 $3.00
2026 Q2 96 26.1 M $84.7 M
2026 Q1 93 35.1 M $86.0 M
2025 Q4 73 34.5 M $63.8 M
2025 Q3 81 36.2 M $83.0 M
2025 Q2 71 36.5 M $102 M
2025 Q1 69 37.3 M $76.1 M
2024 Q4 70 37.5 M $113 M
2024 Q3 68 37.1 M $152 M
2024 Q2 73 38.8 M $127 M
2024 Q1 76 40.7 M $148 M
2023 Q4 74 39.4 M $176 M
2023 Q3 81 39.6 M $184 M
2023 Q2 78 38.7 M $187 M
2023 Q1 82 38.4 M $162 M
2022 Q4 88 37.4 M $324 M
2022 Q3 62 37.0 M $126 M
2022 Q2 52 35.1 M $536 M
2022 Q1 51 32.3 M $513 M
2021 Q4 47 30.3 M $435 M
2021 Q3 47 7.60 M $22.1 M
2021 Q2 53 29.2 M $134 M
2021 Q1 58 28.8 M $186 M
2020 Q4 49 29.1 M $129 M
2020 Q3 39 28.6 M $45.7 M
2020 Q2 48 29.6 M $34.9 M
2020 Q1 63 30.9 M $23.1 M
2019 Q4 73 32.9 M $72.3 M
2019 Q3 94 34.6 M $85.7 M
2019 Q2 116 36.6 M $252 M
2019 Q1 145 37.2 M $620 M
2018 Q4 139 36.6 M $658 M
2018 Q3 150 35.6 M $1.04 B
2018 Q2 146 36.8 M $1.25 B
2018 Q1 108 33.0 M $1.06 B
2017 Q4 63 31.8 M $623 M
2017 Q3 59 32.8 M $552 M
2017 Q2 67 32.7 M $608 M
2017 Q1 76 28.2 M $606 M
2016 Q4 65 28.3 M $430 M