The Williams Companies, Inc.
MX ˙ BMV ˙ US9694571004
SecurityMX:WMB / The Williams Companies, Inc.
InstitutionRosenberg Matthew Hamilton
Latest Disclosed Ownership3,228 shares
Latest Disclosed Value $ 234,934
Rosenberg Matthew Hamilton reports 41.21% increase in ownership of WMB / The Williams Companies, Inc.

On April 6, 2026 - Rosenberg Matthew Hamilton filed a 13F-HR form disclosing ownership of 3,228 shares of The Williams Companies, Inc. (MX:WMB) valued at $234,934 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 2,286 shares of The Williams Companies, Inc.. This represents a change in shares of 41.21% during the quarter.

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)
2026-04-06 2026-03-31 13F WILLIAMS COS INC COM Stock 969457100 3,228 942 41.21 235 70.80 0.0481
2026-01-05 2025-12-31 13F WILLIAMS COS INC COM Stock 969457100 2,286 629 37.96 137 31.73 0.0285
2025-11-10 2025-09-30 13F WILLIAMS COS INC COM Stock 969457100 1,657 0 0.00 105 0.00 0.0227
2025-07-28 2025-06-30 13F WILLIAMS COS INC COM Stock 969457100 1,657 597 56.32 104 65.08 0.0242
2025-04-28 2025-03-31 13F WILLIAMS COS INC COM Stock 969457100 1,060 202 23.54 63 36.96 0.0159
2025-01-14 2024-12-31 13F WILLIAMS COS INC COM Stock 969457100 858 106 14.10 46 35.29 0.0121
2024-10-28 2024-09-30 13F WILLIAMS COS INC COM Stock 969457100 752 252 50.40 34 61.90 0.0090
2024-07-26 2024-06-30 13F WILLIAMS COS INC COM Stock 969457100 500 -252 -33.51 21 -27.59 0.0063
2024-04-22 2024-03-31 13F WILLIAMS COS INC COM Stock 969457100 752 0 0.00 29 11.54 0.0084
2024-01-16 2023-12-31 13F WILLIAMS COS INC COM Stock 969457100 752 252 50.40 26 62.50 0.0081
2023-10-11 2023-09-30 13F WILLIAMS COS INC COM Stock 969457100 500 0 0.00 17 0.00 0.0056
2023-07-26 2023-06-30 13F WILLIAMS COS INC COM Stock 969457100 500 0 0.00 16 14.29 0.0055
2023-04-17 2023-03-31 13F WILLIAMS COS INC COM Stock 969457100 500 0 0.00 15 -12.50 0.0048
2023-01-19 2022-12-31 13F WILLIAMS COS INC COM Stock 969457100 500 0 0.00 16 14.29 0.0056
2022-10-21 2022-09-30 13F WILLIAMS COS INC COM Stock 969457100 500 0 0.00 14 -12.50 0.0054
2022-07-15 2022-06-30 13F WILLIAMS COS INC COM Stock 969457100 500 0 0.00 16 -5.88 0.0060
2022-04-14 2022-03-31 13F WILLIAMS COS INC COM Stock 969457100 500 0 0.00 17 30.77 0.0059
2022-01-20 2021-12-31 13F WILLIAMS COS COM 969457100 500 0 0.00 13 0.00 0.0046
2021-10-12 2021-09-30 13F WILLIAMS COS COM 969457100 500 0 0.00 13 0.00 0.0051
2021-07-26 2021-06-30 13F WILLIAMS COS COM 969457100 500 0 0.00 13 8.33 0.0068
2021-04-30 2021-03-31 13F WILLIAMS COS COM 969457100 500 0 0.00 12 20.00 0.0068
2021-02-03 2020-12-31 13F WILLIAMS COS COM 969457100 500 0 0.00 10 0.00 0.0062
2020-10-16 2020-09-30 13F WILLIAMS COS COM 969457100 500 0 0.00 10 0.00 0.0073
2020-08-04 2020-06-30 13F WILLIAMS COS COM 969457100 500 500 10 0.0080
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.