The Williams Companies, Inc.
MX ˙ BMV ˙ US9694571004
SecurityMX:WMB / The Williams Companies, Inc.
InstitutionGreat Lakes Advisors, Llc
Latest Disclosed Ownership59,269 shares
Latest Disclosed Value $ 4,313,597
Great Lakes Advisors, Llc reports 16.30% decrease in ownership of WMB / The Williams Companies, Inc.

On May 11, 2026 - Great Lakes Advisors, Llc filed a 13F-HR form disclosing ownership of 59,269 shares of The Williams Companies, Inc. (MX:WMB) valued at $4,313,597 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 70,810 shares of The Williams Companies, Inc.. This represents a change in shares of -16.30% 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)
2026-05-11 2026-03-31 13F Williams Cos COM 969457100 59,269 -11,541 -16.30 4,314 1.34 0.0105
2026-02-12 2025-12-31 13F Williams Cos COM 969457100 70,810 -8,569 -10.80 4,256 -15.35 0.0347
2025-11-03 2025-09-30 13F Williams Cos COM 969457100 79,379 -558 -0.70 5,029 0.16 0.0420
2025-08-11 2025-06-30 13F Williams Cos COM 969457100 79,937 16,699 26.41 5,021 32.84 0.0421
2025-05-16 2025-03-31 13F Williams Cos COM 969457100 63,238 15,524 32.54 3,779 46.36 0.0338
2025-02-10 2024-12-31 13F Williams Cos COM 969457100 47,714 408 0.86 2,582 19.59 0.0221
2024-11-04 2024-09-30 13F Williams Cos COM 969457100 47,306 7,669 19.35 2,160 28.21 0.0181
2024-08-06 2024-06-30 13F Williams Cos COM 969457100 39,637 -144 -0.36 1,685 8.65 0.0149
2024-05-08 2024-03-31 13F Williams Cos COM 969457100 39,781 39,781 1,550 0.0131
2020-02-07 2019-12-31 13F Williams Cos COM 969457100 0 -56,658 -100.00 0 -100.00
2019-11-06 2019-09-30 13F Williams Cos COM 969457100 56,658 -223,189 -79.75 1,364 -82.62 0.0300
2019-08-05 2019-06-30 13F Williams Cos COM 969457100 279,847 250,526 854.43 7,847 831.95 0.1710
2019-05-07 2019-03-31 13F Williams Cos COM 969457100 29,321 29,321 842 0.0187
2016-05-11 2016-03-31 13F WILLIAMS COS INC DEL CS 969457100 0 -10,757 -100.00 0 -100.00
2016-02-12 2015-12-31 13F WILLIAMS COS INC DEL CS 969457100 10,757 -1,819 -14.46 276 -40.39 0.0083
2015-10-30 2015-09-30 13F WILLIAMS COS INC DEL CS 969457100 12,576 -315 -2.44 463 -37.43 0.0144
2015-08-12 2015-06-30 13F WILLIAMS COS INC DEL CS 969457100 12,891 -1,519 -10.54 740 1.51 0.0225
2015-05-06 2015-03-31 13F WILLIAMS COS INC DEL CS 969457100 14,410 -484 -3.25 729 8.97 0.0223
2015-02-11 2014-12-31 13F WILLIAMS COS INC DEL CS 969457100 14,894 -336 -2.21 669 -20.64 0.0208
2014-11-20 2014-09-30 13F WILLIAMS COS INC DEL CS 969457100 15,230 -352 -2.26 843 -7.06 0.0283
2014-08-19 2014-06-30 13F WILLIAMS COS INC DEL CS 969457100 15,582 -270 -1.70 907 41.06 0.0373
2014-05-22 2014-03-31 13F WILLIAMS COS INC DEL COMMON 969457100 15,852 -1,311 -7.64 643 -2.87 0.0280
2014-05-22 2013-12-31 13F/A-1 WILLIAMS COMPANIES com 969457100 17,163 -3,081 -15.22 662 -10.05 0.0300
2014-02-24 2013-12-31 13F WILLIAMS COMPANIES com 969457100 17,163 662
2013-11-27 2013-09-30 13F WILLIAMS COMPANIES com 969457100 20,244 2,787 15.96 736 29.81 0.0331
2013-08-16 2013-06-30 13F WILLIAMS COMPANIES com 969457100 17,457 17,457 567 0.0266
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.