Mammoth Energy Services, Inc.

CHARLES SCHWAB INVESTMENT MANAGEMENT INC TUSK

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/13/2026

Shares

70,674

Value ($000)

131

Weight

0.0%

2019 Q4 - 2025 Q4 (22 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/13/2026	131	0.0%	70,674	12/31/2025
2025 Q3	11/10/2025	162	0.0%	70,674	9/30/2025
2025 Q2	8/12/2025	198	0.0%	70,674	6/30/2025
2025 Q1	9/15/2025	144	0.0%	70,674	3/31/2025
2024 Q4	2/6/2025	212	0.0%	70,674	12/31/2024
2024 Q3	11/12/2024	260	0.0%	63,610	9/30/2024
2024 Q2	8/12/2024	210	0.0%	63,981	6/30/2024
2024 Q1	5/9/2024	233	0.0%	63,981	3/31/2024
2023 Q4	2/6/2024	285	0.0%	63,981	12/31/2023
2023 Q3	11/8/2023	297	0.0%	63,981	9/30/2023
2023 Q2	8/10/2023	309	0.0%	63,981	6/30/2023
2023 Q1	5/12/2023	45	0.0%	10,739	3/31/2023
2022 Q4	2/13/2023	93	0.0%	10,739	12/31/2022
2022 Q3	11/14/2022	37	0.0%	10,739	9/30/2022
2021 Q4	2/11/2022	29	0.0%	15,843	12/31/2021
2021 Q3	11/16/2021	47	0.0%	15,843	9/30/2021
2021 Q2	8/16/2021	73	0.0%	15,843	6/30/2021
2021 Q1	5/17/2021	85	0.0%	15,843	3/31/2021
2020 Q4	2/16/2021	71	0.0%	15,843	12/31/2020
2020 Q2	8/20/2020	62	0.0%	52,180	6/30/2020
2020 Q1	5/15/2020	54	0.0%	71,667	3/31/2020
2019 Q4	2/7/2020	156	0.0%	70,528	12/31/2019