Offerings // COMCAST CORP

CMCSA offering history

Every offering-related filing in COMCAST CORP’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,000 filings back to May 9, 2018.

Last executed offering

Dec 15, 2025

8-K — priced deal (shares or notes)

Last registration (announced)

Feb 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
Aug 7, 2026	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 7, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 15, 2025	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 6, 2025	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
May 5, 2025	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Feb 28, 2025	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Sep 25, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 23, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 23, 2024	FWP →	MARKETING	Free-writing prospectus — offering being marketed
May 21, 2024	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
May 20, 2024	FWP →	MARKETING	Free-writing prospectus — offering being marketed
May 2, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
May 1, 2023	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Feb 8, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 7, 2023	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 7, 2023	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Nov 1, 2022	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Oct 31, 2022	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jul 29, 2022	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Apr 25, 2022	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 25, 2022	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Sep 8, 2021	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 7, 2021	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Sep 7, 2021	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Aug 12, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Aug 11, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
May 21, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
May 20, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Mar 25, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Mar 24, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Feb 6, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 5, 2020	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 5, 2020	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Oct 30, 2019	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Oct 29, 2019	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Aug 1, 2019	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Oct 3, 2018	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Oct 3, 2018	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Oct 2, 2018	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)

CMCSA 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 CMCSA workspace →

CMCSA offering FAQ

When did CMCSA last execute an offering?

Per SEC filings, COMCAST CORP's most recent priced offering document is a 8-K filed 2025-12-15. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did CMCSA last announce or register an offering?

The most recent registration is a S-3ASR filed 2025-02-28. 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.