Offerings // Phillips 66

PSX offering history

Every offering-related filing in Phillips 66’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,000 filings back to Feb 4, 2016.

Last executed offering

Sep 17, 2025

424B2 — priced deal (shares or notes)

Last registration (announced)

Jul 28, 2025

S-3ASR — 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
Sep 17, 2025	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 16, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Sep 16, 2025	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jul 28, 2025	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Sep 10, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 9, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Sep 9, 2024	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Feb 28, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 27, 2024	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Feb 26, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 3, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 3, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 28, 2023	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Mar 28, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Mar 27, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jul 29, 2022	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Feb 2, 2022	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Feb 2, 2022	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 12, 2021	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Nov 12, 2021	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Nov 10, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Nov 17, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Nov 17, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Nov 16, 2020	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 9, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jun 9, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Jun 8, 2020	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 8, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Apr 8, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Apr 7, 2020	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jul 26, 2019	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Feb 27, 2018	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 26, 2018	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Feb 26, 2018	FWP →	MARKETING	Free-writing prospectus — offering being marketed

PSX 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.

Is a shelf active now? →Do they need money? →Red flags →Full PSX workspace →

PSX offering FAQ

When did PSX last execute an offering?

Per SEC filings, Phillips 66's most recent priced offering document is a 424B2 filed 2025-09-17. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did PSX last announce or register an offering?

The most recent registration is a S-3ASR filed 2025-07-28. 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.