Western Midstream Partners, LP - Limited Partnership
US ˙ NYSE ˙ US9586691035

SecurityWES / Western Midstream Partners, LP - Limited Partnership
InstitutionHeronetta Management, L.P.
Latest Disclosed Ownership206,361 shares
Latest Disclosed Value $ 8,495,882
Heronetta Management, L.P. ownership in WES / Western Midstream Partners, LP - Limited Partnership

On May 1, 2026 - Heronetta Management, L.P. filed a 13F-HR form disclosing ownership of 206,361 shares of Western Midstream Partners, LP - Limited Partnership (US:WES) valued at $8,495,882 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 206,361 shares of Western Midstream Partners, LP - Limited Partnership. This represents a change in shares of 0.00% during the quarter. The current value of the position is $9,304,817 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 WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 206,361 0 0.00 8,496 4.22 7.7538
2026-02-04 2025-12-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 206,361 -22,225 -9.72 8,151 -9.24 4.7132
2025-11-12 2025-09-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 228,586 0 0.00 8,981 1.53 4.9183
2025-08-06 2025-06-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 228,586 813 0.36 8,846 -5.18 4.9273
2025-05-15 2025-03-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 227,773 -900 -0.39 9,330 6.17 5.0973
2025-02-06 2024-12-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 228,673 0 0.00 8,788 0.43 5.0199
2024-10-31 2024-09-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 228,673 0 0.00 8,749 -3.70 5.3490
2024-07-30 2024-06-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 228,673 1,000 0.44 9,085 12.26 5.8115
2024-05-01 2024-03-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 227,673 0 0.00 8,094 21.50 5.2261
2024-01-25 2023-12-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 227,673 8,000 3.64 6,662 11.37 4.7183
2023-11-02 2023-09-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 219,673 2,900 1.34 5,982 4.05 4.3885
2023-08-09 2023-06-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 216,773 0 0.00 5,749 0.56 4.2045
2023-05-10 2023-03-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 216,773 -61,973 -22.23 5,716 -23.62 4.1998
2023-02-10 2022-12-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 278,746 13,855 5.23 7,484 12.29 4.7203
2022-10-27 2022-09-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 264,891 0 0.00 6,665 3.49 4.7781
2022-08-05 2022-06-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 264,891 0 0.00 6,440 -3.61 4.4978
2022-04-29 2022-03-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 264,891 0 0.00 6,681 13.26 4.3129
2022-02-03 2021-12-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 264,891 0 0.00 5,899 6.25 4.4702
2021-10-27 2021-09-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 264,891 0 0.00 5,552 27.60 4.2780
2021-08-04 2021-06-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 264,891 0 0.00 4,351 -11.64 3.8185
2021-04-29 2021-03-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 264,891 -58,000 -17.96 4,924 -2.20 4.1182
2021-02-10 2020-12-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 322,891 0 0.00 5,035 94.93 4.1949
2020-11-10 2020-09-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 322,891 0 0.00 2,583 -20.33 2.6634
2020-07-24 2020-06-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 322,891 0 0.00 3,242 209.94 3.0617
2020-05-08 2020-03-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 322,891 74,900 30.20 1,046 -78.58 1.2481
2020-01-31 2019-12-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 247,991 4,000 1.64 4,883 -19.59 3.1726
2019-11-08 2019-09-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 243,991 -20,000 -7.58 6,073 -25.24 3.9071
2019-08-13 2019-06-30 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 263,991 -11,308 -4.11 8,123 -5.91 4.9101
2019-04-30 2019-03-31 13F WESTERN MIDSTREAM PARTNERS L COM UNIT LP INT 958669103 275,299 117,399 74.35 8,633 29.47 4.7930
2019-02-12 2018-12-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 157,900 5,000 3.27 6,668 -0.16 4.3242
2019-02-12 2018-12-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 34,500 0 957 0.6206
2018-11-13 2018-09-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 152,900 0 0.00 6,679 -9.73 3.7389
2018-11-13 2018-09-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 34,500 5,800 1,033 0.5783
2018-07-31 2018-06-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 152,900 -18,000 -10.53 7,399 1.47 4.2208
2018-07-31 2018-06-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 28,700 -4,800 1,026 0.5853
2018-05-14 2018-03-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 170,900 3,000 1.79 7,292 -9.69 4.3951
2018-05-14 2018-03-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 33,500 0 1,110 0.6690
2018-02-14 2017-12-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 167,900 4,300 2.63 8,074 -3.75 4.3199
2018-02-14 2017-12-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 33,500 0 1,245 0.6661
2017-10-31 2017-09-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 163,600 0 0.00 8,389 -8.34 4.6470
2017-10-31 2017-09-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 33,500 8,300 1,380 0.7644
2017-08-11 2017-06-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 163,600 0 0.00 9,152 -7.46 5.0663
2017-08-11 2017-06-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 25,200 0 1,084 0.6001
2017-05-09 2017-03-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 163,600 6,700 4.27 9,890 7.28 4.9526
2017-05-09 2017-03-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 25,200 4,800 1,162 0.5819
2017-02-13 2016-12-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 156,900 0 0.00 9,219 6.74 4.7742
2017-02-13 2016-12-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 20,400 0 864 0.4474
2016-11-14 2016-09-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 156,900 0 0.00 8,637 9.22 4.5326
2016-11-14 2016-09-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 20,400 0 867 0.4550
2016-08-15 2016-06-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 156,900 0 0.00 7,908 16.11 4.2434
2016-08-15 2016-06-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 20,400 5,000 780 0.4185
2016-05-13 2016-03-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 156,900 0 0.00 6,811 -8.66 4.3421
2016-05-13 2016-03-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 15,400 0 549 0.3500
2016-02-05 2015-12-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 156,900 5,300 3.50 7,457 5.06 4.4666
2016-02-05 2015-12-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 15,400 8,800 559 0.3348
2015-11-12 2015-09-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 151,600 0 0.00 7,098 -26.12 4.1021
2015-11-12 2015-09-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 6,600 -39,000 260 0.1503
2015-08-13 2015-06-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 151,600 7,000 4.84 9,607 0.89 4.4593
2015-08-13 2015-06-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 45,600 11,900 2,736 1.2700
2015-05-12 2015-03-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 144,600 3,000 2.12 9,522 -7.95 4.3967
2015-05-12 2015-03-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 33,700 12,000 2,022 0.9336
2015-02-12 2014-12-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 141,600 1,000 0.71 10,344 -1.91 4.6055
2015-02-12 2014-12-31 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 21,700 5,200 1,307 0.5819
2014-11-10 2014-09-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 140,600 2,500 1.81 10,545 -0.16 4.0377
2014-11-10 2014-09-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 16,500 9,500 1,006 0.3852
2014-08-13 2014-06-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 138,100 4,200 3.14 10,562 19.17 4.1923
2014-08-13 2014-06-30 13F WESTERN GAS EQUITY PARTNERS COMUNT LTD PT 95825R103 7,000 -126,900 439 0.1742
2014-05-12 2014-03-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 133,900 5,000 3.88 8,863 11.46 4.1127
2014-01-24 2013-12-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 128,900 1,000 0.78 7,952 3.39 3.9691
2013-11-15 2013-09-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 127,900 11,200 9.60 7,691 3.32 4.1151
2013-11-15 2013-06-30 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 116,700 3,100 2.73 7,444 10.30 4.1368
2013-11-15 2013-03-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 113,600 -3,500 -2.99 6,749 21.01 4.0424
2013-11-14 2012-12-31 13F WESTERN GAS PARTNERS COM UNIT LP IN 958254104 117,100 117,100 5,577 3.9121
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.