The Williams Companies, Inc.
MX ˙ BMV ˙ US9694571004
SecurityMX:WMB / The Williams Companies, Inc.
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership57,878 shares
Latest Disclosed Value $ 4,212,370
Summit Trail Advisors, Llc reports 28.90% increase in ownership of WMB / The Williams Companies, Inc.

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 57,878 shares of The Williams Companies, Inc. (MX:WMB) valued at $4,212,370 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 44,902 shares of The Williams Companies, Inc.. This represents a change in shares of 28.90% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-12 2026-03-31 13F WILLIAMS COS COM 969457100 57,878 12,976 28.90 4,212 56.06 0.0603
2026-02-17 2025-12-31 13F WILLIAMS COS COM 969457100 44,902 31 0.07 2,699 -5.03 0.0467
2025-11-14 2025-09-30 13F WILLIAMS COS COM 969457100 44,871 13,439 42.76 2,843 43.97 0.0393
2025-08-14 2025-06-30 13F WILLIAMS COS COM 969457100 31,432 31,432 1,974 0.0339
2025-01-29 2024-12-31 13F WILLIAMS COS COM 969457100 0 -12,174 -100.00 0 -100.00
2024-11-12 2024-09-30 13F WILLIAMS COS COM 969457100 12,174 -1,150 -8.63 556 -1.94 0.0138
2024-08-13 2024-06-30 13F Williams Cos Inc Com COM 969457100 13,324 3,678 38.13 566 50.93 0.0149
2024-04-23 2024-03-31 13F WILLIAMS COS COM 969457100 9,646 646 7.18 376 19.81 0.0100
2024-02-06 2023-12-31 13F WILLIAMS COS COM 969457100 9,000 -2,138 -19.20 313 -16.53 0.0104
2023-10-30 2023-09-30 13F WILLIAMS COS COM 969457100 11,138 802 7.76 375 11.28 0.0138
2023-07-25 2023-06-30 13F WILLIAMS COS COM 969457100 10,336 10,336 337 0.0127
2021-02-16 2020-12-31 13F Williams Cos Inc Com Equity 969457100 0 -11,218 -100.00 0 -100.00
2020-11-16 2020-09-30 13F/A-1 Williams Cos Inc Com Equity 969457100 11,218 11,218 217 0.0420
2018-08-10 2018-06-30 13F WILLIAMS COS INC DEL COM EQUITY 969457100 0 -55,239 -100.00 0 -100.00
2018-05-22 2018-03-31 13F/A-1 WILLIAMS COS INC DEL COM EQUITY 969457100 55,239 -516 -0.93 1,179 -35.50 0.2001
2018-05-21 2018-03-31 13F WILLIAMS COS INC DEL COM EQUITY 969457100 1,179,088 1,123,333 1,179
2018-02-14 2017-12-31 13F WILLIAMS COS EQUITY 969457100 55,755 55,755 1,828 0.2308
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.