Offerings // Western Midstream Partners, LP

WES offering history

Every offering-related filing in Western Midstream Partners, LP’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 684 filings back to May 8, 2008.

Last executed offering

Jun 12, 2026

8-K — priced deal (shares or notes)

Last registration (announced)

Jul 28, 2026

S-3 — capacity, not a sale

Executed, last 12 months

424B pricings + 8-K 3.02 sales

Registered, last 12 months

S-1/S-3/F-series registrations

Date	Filing		What it means
Aug 5, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jul 28, 2026	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jun 22, 2026	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jun 12, 2026	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Sep 12, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Sep 12, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 14, 2024	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Aug 12, 2024	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Mar 30, 2023	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Mar 24, 2021	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Mar 22, 2021	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Jan 6, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 17, 2019	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jan 28, 2019	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 6, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 14, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 7, 2016	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Nov 4, 2016	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jun 15, 2016	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 13, 2016	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 5, 2015	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jun 5, 2015	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jun 5, 2015	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 5, 2015	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 3, 2015	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 3, 2015	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 3, 2015	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jul 2, 2014	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 30, 2014	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jan 15, 2014	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jan 2, 2014	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Dec 12, 2012	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Dec 10, 2012	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Dec 6, 2012	S-1MEF →	REGISTERED	S-1MEF registration — capacity to sell shares, not a sale yet
Dec 6, 2012	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 3, 2012	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Nov 28, 2012	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Nov 13, 2012	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Nov 5, 2012	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet

WES offering-related filings from SEC EDGAR, newest first (capped at 40). Each links to the original document.

Two honest limits. (1) A 424B takedown can price shares or notes — EDGAR’s metadata doesn’t say which, so open the document: large investment-grade filers use these mostly for bond deals (no dilution), small-caps mostly for shares. (2) At-the-market (ATM) programs sell shares gradually and individual sales are not separately filed — the visible footprint is the enabling shelf and its 424B5; actual ATM share counts surface later in the 10-Q/10-K share count. Educational information from public filings, not investment advice.

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WES offering FAQ

When did WES last execute an offering?

Per SEC filings, Western Midstream Partners, LP's most recent priced offering document is a 8-K filed 2026-06-12. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did WES last announce or register an offering?

The most recent registration is a S-3 filed 2026-07-28. A registration is capacity to sell shares — not a sale.

Does an offering always mean dilution?

Registered direct offerings and shelf takedowns issue new shares and dilute existing holders. Resale registrations (424B3/B7) let existing holders sell and do not create new shares. Secondary sales by insiders also do not dilute. Each row here is labeled with what it is.

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