The Williams Companies, Inc.
US ˙ NYSE ˙ US9694571004

SecurityWMB / The Williams Companies, Inc.
InstitutionHeronetta Management, L.P.
Latest Disclosed Ownership251,402 shares
Latest Disclosed Value $ 18,297,038
Heronetta Management, L.P. reports 0.50% increase in ownership of WMB / The Williams Companies, Inc.

On May 1, 2026 - Heronetta Management, L.P. filed a 13F-HR form disclosing ownership of 251,402 shares of The Williams Companies, Inc. (US:WMB) valued at $18,297,038 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 250,152 shares of The Williams Companies, Inc.. This represents a change in shares of 0.50% during the quarter. The current value of the position is $18,209,047 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)
2026-05-01 2026-03-31 13F WILLIAMS COS COM 969457100 251,402 1,250 0.50 18,297 21.69 16.6989
2026-02-04 2025-12-31 13F WILLIAMS COS COM 969457100 250,152 -26,125 -9.46 15,037 -14.09 8.6944
2025-11-12 2025-09-30 13F WILLIAMS COS COM 969457100 276,277 0 0.00 17,502 0.86 9.5847
2025-08-06 2025-06-30 13F WILLIAMS COS COM 969457100 276,277 0 0.00 17,353 5.10 9.6654
2025-05-15 2025-03-31 13F WILLIAMS COS COM 969457100 276,277 -1,100 -0.40 16,510 9.99 9.0205
2025-02-06 2024-12-31 13F WILLIAMS COS COM 969457100 277,377 0 0.00 15,012 18.55 8.5752
2024-10-31 2024-09-30 13F WILLIAMS COS COM 969457100 277,377 0 0.00 12,662 7.41 7.7415
2024-07-30 2024-06-30 13F WILLIAMS COS COM 969457100 277,377 0 0.00 11,789 9.06 7.5407
2024-05-01 2024-03-31 13F WILLIAMS COS COM 969457100 277,377 0 0.00 10,809 11.88 6.9795
2024-01-25 2023-12-31 13F WILLIAMS COS COM 969457100 277,377 0 0.00 9,661 3.39 6.8427
2023-11-02 2023-09-30 13F WILLIAMS COS COM 969457100 277,377 0 0.00 9,345 3.25 6.8558
2023-08-09 2023-06-30 13F WILLIAMS COS COM 969457100 277,377 0 0.00 9,051 9.27 6.6195
2023-05-10 2023-03-31 13F WILLIAMS COS COM 969457100 277,377 -51,558 -15.67 8,282 -23.46 6.0852
2023-02-10 2022-12-31 13F WILLIAMS COS COM 969457100 328,935 24,870 8.18 10,822 24.31 6.8253
2022-10-27 2022-09-30 13F WILLIAMS COS COM 969457100 304,065 2,200 0.73 8,705 -7.60 6.2406
2022-08-05 2022-06-30 13F WILLIAMS COS COM 969457100 301,865 0 0.00 9,421 -6.58 6.5797
2022-04-29 2022-03-31 13F WILLIAMS COS COM 969457100 301,865 0 0.00 10,085 28.29 6.5103
2022-02-03 2021-12-31 13F WILLIAMS COS COM 969457100 301,865 0 0.00 7,861 0.40 5.9569
2021-10-27 2021-09-30 13F WILLIAMS COS COM 969457100 301,865 0 0.00 7,830 17.44 6.0333
2021-08-04 2021-06-30 13F WILLIAMS COS COM 969457100 301,865 0 0.00 6,667 -6.77 5.8511
2021-04-29 2021-03-31 13F WILLIAMS COS COM 969457100 301,865 -35,000 -10.39 7,151 1.63 5.9808
2021-02-10 2020-12-31 13F WILLIAMS COS COM 969457100 336,865 0 0.00 7,036 6.30 5.8620
2020-11-10 2020-09-30 13F WILLIAMS COS COM 969457100 336,865 -12,500 -3.58 6,619 -0.39 6.8250
2020-07-24 2020-06-30 13F WILLIAMS COS COM 969457100 349,365 0 0.00 6,645 34.41 6.2755
2020-05-08 2020-03-31 13F WILLIAMS COS COM 969457100 349,365 39,000 12.57 4,944 -32.84 5.8991
2020-01-31 2019-12-31 13F WILLIAMS COS INC DEL COM 969457100 310,365 -24,000 -7.18 7,362 -8.49 4.7833
2019-11-08 2019-09-30 13F WILLIAMS COS INC DEL COM 969457100 334,365 0 0.00 8,045 -14.20 5.1758
2019-08-13 2019-06-30 13F WILLIAMS COS INC DEL COM 969457100 334,365 -12,587 -3.63 9,376 -5.90 5.6675
2019-04-30 2019-03-31 13F WILLIAMS COS INC DEL COM 969457100 346,952 0 0.00 9,964 30.25 5.5320
2019-02-12 2018-12-31 13F WILLIAMS COS INC DEL COM 969457100 346,952 14,500 4.36 7,650 -15.37 4.9610
2018-11-13 2018-09-30 13F WILLIAMS COS INC DEL COM 969457100 332,452 332,452 9,039 5.0600
2016-08-15 2016-06-30 13F WILLIAMS COS INC DEL COM 969457100 0 -11,500 -100.00 0 -100.00
2016-05-13 2016-03-31 13F WILLIAMS COS INC DEL COM 969457100 11,500 0 0.00 185 -37.50 0.1179
2016-02-05 2015-12-31 13F WILLIAMS COS INC DEL COM 969457100 11,500 0 0.00 296 -30.19 0.1773
2015-11-12 2015-09-30 13F WILLIAMS COS INC DEL COM 969457100 11,500 0 0.00 424 -35.76 0.2450
2015-08-13 2015-06-30 13F WILLIAMS COS INC DEL COM 969457100 11,500 -3,000 -20.69 660 -10.08 0.3064
2015-05-12 2015-03-31 13F WILLIAMS COS INC DEL COM 969457100 14,500 0 0.00 734 12.58 0.3389
2015-02-12 2014-12-31 13F WILLIAMS COS INC DEL COM 969457100 14,500 0 0.00 652 -18.80 0.2903
2014-11-10 2014-09-30 13F WILLIAMS COS INC DEL COM 969457100 14,500 0 0.00 803 -4.86 0.3075
2014-08-13 2014-06-30 13F WILLIAMS COS INC DEL COM 969457100 14,500 0 0.00 844 43.54 0.3350
2014-05-12 2014-03-31 13F WILLIAMS COS INC DEL COM 969457100 14,500 4,000 38.10 588 45.19 0.2729
2014-01-24 2013-12-31 13F WILLIAMS COS INC DEL COM 969457100 10,500 0 0.00 405 6.02 0.2021
2013-11-15 2013-09-30 13F WILLIAMS COS INC DEL COM 969457100 10,500 10,500 382 0.2044
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.