Atmos Energy Corporation
US ˙ NYSE ˙ US0495601058

SecurityATO / Atmos Energy Corporation
InstitutionBRYN MAWR TRUST Co
Latest Disclosed Ownership220 shares
Latest Disclosed Value $ 40,638
BRYN MAWR TRUST Co reports 85.94% decrease in ownership of ATO / Atmos Energy Corporation

On April 30, 2026 - BRYN MAWR TRUST Co filed a 13F-HR form disclosing ownership of 220 shares of Atmos Energy Corporation (US:ATO) valued at $40,638 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,565 shares of Atmos Energy Corporation. This represents a change in shares of -85.94% during the quarter. The current value of the position is $37,453 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)
2026-04-30 2026-03-31 13F ATMOS ENERGY COM 049560105 220 -1,345 -85.94 41 -84.73 0.0007
2026-02-12 2025-12-31 13F ATMOS ENERGY COM 049560105 1,565 -778 -33.21 262 -34.50 0.0062
2025-11-20 2025-09-30 13F/A-1 ATMOS ENERGY COM 049560105 2,343 -265 -10.16 400 -0.25 0.0096
2025-10-28 2025-09-30 13F ATMOS ENERGY COM 049560105 3,031 423 518 0.0057
2025-07-28 2025-06-30 13F ATMOS ENERGY COM 049560105 2,608 320 13.99 402 13.60 0.0072
2025-05-08 2025-03-31 13F ATMOS ENERGY COM 049560105 2,288 -257 -10.10 354 -0.28 0.0066
2025-01-28 2024-12-31 13F Atmos Energy COM 049560105 2,545 -645 -20.22 354 -19.91 0.0064
2024-11-25 2024-09-30 13F Atmos Energy COM 049560105 3,190 3,190 442 0.0079
2019-08-27 2017-12-31 13F/A-1 ATMOS ENERGY COMMON STOCK 049560105 0 -20,289 -100.00 0 -100.00
2019-08-27 2017-09-30 13F/A-1 ATMOS ENERGY COMMON STOCK 049560105 20,289 -71,812 -77.97 1,701 -77.73 0.0974
2017-11-14 2017-09-30 13F ATMOS ENERGY COMMON STOCK 049560105 20,289 -71,812 1,701 0.0966
2017-08-11 2017-06-30 13F ATMOS ENERGY COMMON STOCK 049560105 92,101 92,101 7,639 0.4544
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.