Atlas Energy Solutions Inc.
US ˙ NYSE ˙ US04930R1077

SecurityAESI / Atlas Energy Solutions Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership117,695 shares
Latest Disclosed Value $ 1,108,628
Sei Investments Co reports 58.98% decrease in ownership of AESI / Atlas Energy Solutions Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 117,695 shares of Atlas Energy Solutions Inc. (US:AESI) valued at $1,108,687 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 286,953 shares of Atlas Energy Solutions Inc.. This represents a change in shares of -58.98% during the quarter. The current value of the position is $2,107,917 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 117,695 -169,258 -58.98 1,109 -66.03 0.0011
2025-11-13 2025-09-30 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 286,953 -31,495 -9.89 3,262 -23.37 0.0035
2025-08-14 2025-06-30 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 318,448 20,382 6.84 4,258 -19.94 0.0049
2025-05-14 2025-03-31 13F/A-1 ATLAS ENERGY SOLUTIONS COM NEW 642045108 298,066 84,209 39.38 5,317 12.10 0.0068
2025-05-13 2025-03-31 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 253,814 39,957 5,091 0.0055
2025-02-11 2024-12-31 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 213,857 28,639 15.46 4,744 17.49 0.0061
2024-11-12 2024-09-30 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 185,218 25,886 16.25 4,038 27.11 0.0052
2024-08-13 2024-06-30 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 159,332 71,226 80.84 3,177 59.44 0.0045
2024-05-07 2024-03-31 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 88,106 47,882 119.04 1,993 187.86 0.0029
2024-02-14 2023-12-31 13F ATLAS ENERGY SOLUTIONS COM NEW 642045108 40,224 40,224 693 0.0011
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.