The Williams Companies, Inc.
MX ˙ BMV ˙ US9694571004
SecurityMX:WMB / The Williams Companies, Inc.
InstitutionNational Pension Service
Latest Disclosed Ownership3,217,009 shares
Latest Disclosed Value $ 234,133,915
National Pension Service reports 2.03% increase in ownership of WMB / The Williams Companies, Inc.

On May 12, 2026 - National Pension Service filed a 13F-HR form disclosing ownership of 3,217,009 shares of The Williams Companies, Inc. (MX:WMB) valued at $234,133,915 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 3,152,872 shares of The Williams Companies, Inc.. This represents a change in shares of 2.03% 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)
2026-05-12 2026-03-31 13F WILLIAMS COS COM 969457100 3,217,009 64,137 2.03 234,134 23.54 0.1778
2026-02-10 2025-12-31 13F WILLIAMS COS WILLIAMS COS INC 969457100 3,152,872 -720,989 -18.61 189,519 -22.77 0.1403
2025-11-04 2025-09-30 13F WILLIAMS COS COM 969457100 3,873,861 42,387 1.11 245,409 1.98 0.1906
2025-08-08 2025-06-30 13F WILLIAMS COS COM 969457100 3,831,474 1,029,106 36.72 240,655 43.70 0.2078
2025-05-13 2025-03-31 13F WILLIAMS COS COM 969457100 2,802,368 94,275 3.48 167,470 14.27 0.1610
2025-02-05 2024-12-31 13F WILLIAMS COS COM 969457100 2,708,093 328,516 13.81 146,562 34.92 0.1387
2024-10-30 2024-09-30 13F WILLIAMSCOSINC COM 969457100 2,379,577 348,139 17.14 108,628 25.82 0.1048
2024-08-13 2024-06-30 13F WILLIAMS COS COM 969457100 2,031,438 -32,398 -1.57 86,336 7.35 0.0992
2024-05-14 2024-03-31 13F WILLIAMS COS COM 969457100 2,063,836 65,201 3.26 80,428 15.54 0.0965
2024-02-07 2023-12-31 13F WILLIAMS COS COM 969457100 1,998,635 37,631 1.92 69,612 5.71 0.0969
2023-11-15 2023-09-30 13F WILLIAMS COS COM 969457100 1,961,004 14,040 0.72 65,851 3.97 0.1054
2023-08-16 2023-06-30 13F WILLIAMS COS COM 969457100 1,946,964 132,729 7.32 63,335 18.70 0.1022
2023-05-12 2023-03-31 13F WILLIAMS COS COM 969457100 1,814,235 -454,233 -20.02 53,357 -28.51 0.0972
2023-02-24 2022-12-31 13F/A-1 WILLIAMS COS COM 969457100 2,268,468 63,112 2.86 74,633 16.86 0.1468
2023-02-21 2022-12-31 13F WILLIAMS COS COM 969457100 2,268,468 63,112 75 0.1468
2023-02-24 2022-09-30 13F/A-1 WILLIAMS COS COM 969457100 2,205,356 77,290 3.63 63,867 -3.84 0.1333
2022-11-18 2022-09-30 13F WILLIAMS COS COM 969457100 2,205,356 77,290 63,867 0.1333
2022-08-17 2022-06-30 13F WILLIAMS COS COM 969457100 2,128,066 216,616 11.33 66,417 4.00 0.1369
2022-05-13 2022-03-31 13F WILLIAMS COS COM 969457100 1,911,450 207,180 12.16 63,862 43.90 0.1166
2022-02-15 2021-12-31 13F WILLIAMS COS COM 969457100 1,704,270 -79,810 -4.47 44,379 -4.11 0.0774
2021-11-18 2021-09-30 13F WILLIAMS COS COM 969457100 1,784,080 -352,499 -16.50 46,279 -18.42 0.0881
2021-08-17 2021-06-30 13F WILLIAMS COS COM 969457100 2,136,579 51,760 2.48 56,726 14.86 0.1078
2021-05-14 2021-03-31 13F WILLIAMS COS COM 969457100 2,084,819 446,416 27.25 49,389 50.35 0.1033
2021-02-19 2020-12-31 13F WILLIAMS COS COM 969457100 1,638,403 -3,641 -0.22 32,850 -1.93 0.0749
2020-11-13 2020-09-30 13F WILLIAMS COS COM 969457100 1,642,044 0 0.00 33,498 7.26 0.0880
2020-08-11 2020-06-30 13F WILLIAMS COS COM 969457100 1,642,044 -108,787 -6.21 31,232 26.07 0.0892
2020-05-27 2020-03-31 13F WILLIAMS COS COM 969457100 1,750,831 14,238 0.82 24,774 -39.86 0.0838
2020-02-21 2019-12-31 13F WILLIAMS COS INC DEL COM 969457100 1,736,593 618,474 55.31 41,192 53.12 0.1130
2019-11-15 2019-09-30 13F WILLIAMS COS INC DEL COM 969457100 1,118,119 52,947 4.97 26,902 -9.93 0.0851
2019-08-14 2019-06-30 13F WILLIAMS COS INC DEL COM 969457100 1,065,172 67,017 6.71 29,867 4.19 0.0998
2019-05-15 2019-03-31 13F WILLIAMS COS INC DEL COM 969457100 998,155 37,239 3.88 28,667 11.07 0.1103
2019-02-15 2018-12-31 13F WILLIAMS COS INC DEL COM 969457100 960,916 38,812 4.21 25,810 2.94 0.1065
2018-11-15 2018-09-30 13F WILLIAMS COS INC DEL COM 969457100 922,104 -13,596 -1.45 25,072 -1.38 0.1021
2018-08-14 2018-06-30 13F WILLIAMS COS INC DEL COM 969457100 935,700 47,699 5.37 25,423 15.16 0.1150
2018-04-13 2018-03-31 13F WILLIAMS COS INC DEL COM 969457100 888,001 54,827 6.58 22,076 -13.10 0.1094
2018-01-17 2017-12-31 13F WILLIAMS COS INC DEL COM 969457100 833,174 33,099 4.14 25,403 5.84 0.1268
2017-10-16 2017-09-30 13F WILLIAMS COS COM 969457100 800,075 31,983 4.16 24,002 4.86 0.1321
2017-07-13 2017-06-30 13F WILLIAMS COS INC DEL COM 969457100 768,092 82,314 12.00 22,889 14.85 0.1363
2017-04-11 2017-03-31 13F WILLIAMS COS INC DEL COM 969457100 685,778 -9,180 -1.32 19,929 -7.91 0.1334
2017-01-18 2016-12-31 13F WILLIAMS COS INC DEL COM 969457100 694,958 79,597 12.94 21,641 14.44 0.1480
2016-10-14 2016-09-30 13F WILLIAMS COS INC DEL COM 969457100 615,361 52,210 9.27 18,910 55.24 0.1516
2016-08-11 2016-06-30 13F WILLIAMS COS INC DEL COM 969457100 563,151 143,356 34.15 12,181 80.57 0.1081
2016-05-16 2016-03-31 13F WILLIAMS COS INC DEL COM 969457100 419,795 17,322 4.30 6,746 -34.78 0.0676
2016-02-12 2015-12-31 13F WILLIAMS COS INC DEL COM 969457100 402,473 24,551 6.50 10,344 -25.72 0.1086
2015-10-15 2015-09-30 13F WILLIAMS COS INC DEL COM 969457100 377,922 78,459 26.20 13,926 -18.97 0.1761
2015-07-15 2015-06-30 13F WILLIAMS COS INC DEL COM 969457100 299,463 43,391 16.94 17,186 32.66 0.2229
2015-04-15 2015-03-31 13F WILLIAMS COS INC DEL COM 969457100 256,072 31,535 14.04 12,955 28.38 0.1872
2015-01-13 2014-12-31 13F WILLIAMS COS INC DEL COM 969457100 224,537 -22,939 -9.27 10,091 -26.33 0.1703
2014-11-07 2014-09-30 13F WILLIAMS COS INC DEL COM 969457100 247,476 247,476 13,698 0.2175
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.