Heronetta Management, L.P.

Position in WMB — Williams Companies, Inc.

CIK 1588225 NEW YORK, NY

Position in WMB

as of Mar 31, 2026 · filed May 1, 2026 Compact

Position Value

$18,297,037

+$3,260,401 QoQ

Shares Held

251,402

+0.5% QoQ

Ownership

0.021%

of shares outstanding

% of Portfolio

16.70%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Energy · as of Mar 31, 2026

Heronetta Management, L.P. holds $109,570,592 across 16 Oil & Gas Midstream names. WMB ranks #3 (16.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	EPD	Enterprise Products Partners L.P.	495,048	$18,732,616
2	MPLX	Mplx LP	324,039	$18,492,905
3	WMB	Williams Companies, Inc. This page	251,402	$18,297,037
4	ET	Energy Transfer LP	799,229	$15,425,119
5	OKE	Oneok Inc /New/	140,802	$12,727,092
6	WES	Western Midstream Partners, LP	206,361	$8,495,882
7	PAGP	Plains Gp Holdings LP	181,025	$4,395,287
8	HESM	Hess Midstream LP	92,505	$3,595,669

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$18,297,037	251,402	+0.5%	Shares	Sole	2026-05-01
2025-12-31	$15,036,636	250,152	-9.5%	Shares	Sole	2026-02-04
2025-09-30	$17,502,147	276,277	0.0%	Shares	Sole	2025-11-12
2025-06-30	$17,352,958	276,277	0.0%	Shares	Sole	2025-08-06
2025-03-31	$16,510,313	276,277	-0.4%	Shares	Sole	2025-05-15
2024-12-31	$15,011,643	277,377	0.0%	Shares	Sole	2025-02-06
2024-09-30	$12,662,260	277,377	0.0%	Shares	Sole	2024-10-31
2024-06-30	$11,788,522	277,377	0.0%	Shares	Sole	2024-07-30
2024-03-31	$10,809,381	277,377	0.0%	Shares	Sole	2024-05-01
2023-12-31	$9,661,040	277,377	0.0%	Shares	Sole	2024-01-25
2023-09-30	$9,344,831	277,377	0.0%	Shares	Sole	2023-11-02
2023-06-30	$9,050,811	277,377	0.0%	Shares	Sole	2023-08-09
2023-03-31	$8,282,477	277,377	-15.7%	Shares	Sole	2023-05-10
2022-12-31	$10,821,961	328,935	+8.2%	Shares	Sole	2023-02-10
2022-09-30	$8,705,380	304,065	+0.7%	Shares	Sole	2022-10-27
2022-06-30	$9,421,206	301,865	0.0%	Shares	Sole	2022-08-05
2022-03-31	$10,085,309	301,865	0.0%	Shares	Sole	2022-04-29
2021-12-31	$7,860,564	301,865	0.0%	Shares	Sole	2022-02-03
2021-09-30	$7,830,378	301,865	0.0%	Shares	Sole	2021-10-27
2021-06-30	$8,014,515	301,865	0.0%	Shares	Sole	2021-08-04
2021-03-31	$7,151,181	301,865	-10.4%	Shares	Sole	2021-04-29
2020-12-31	$6,754,143	336,865	0.0%	Shares	Sole	2021-02-10
2020-09-30	$6,619,397	336,865	-3.6%	Shares	Sole	2020-11-10
2020-06-30	$6,644,922	349,365	0.0%	Shares	Sole	2020-07-24
2020-03-31	$4,943,514	349,365	—	Shares	Sole	2020-05-08
No filing history on record for this holder in this stock.