Offerings // Kosmos Energy Ltd.

KOS offering history

Every offering-related filing in Kosmos Energy Ltd.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,002 filings back to Jan 31, 2013.

Last executed offering

Mar 12, 2026

424B5 — priced deal (shares or notes)

Last registration (announced)

Jun 20, 2024

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
Mar 12, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 10, 2026	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 20, 2024	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Mar 8, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Oct 15, 2021	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 14, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 21, 2021	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Mar 14, 2019	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Nov 28, 2018	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Nov 26, 2018	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Nov 26, 2018	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Sep 20, 2018	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 28, 2018	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
May 24, 2017	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
May 22, 2017	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jan 13, 2017	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Jan 11, 2017	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Jun 22, 2015	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Oct 8, 2014	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Oct 6, 2014	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Jul 11, 2014	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Jul 9, 2014	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Feb 15, 2013	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Feb 11, 2013	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell

KOS 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 KOS workspace →

KOS offering FAQ

When did KOS last execute an offering?

Per SEC filings, Kosmos Energy Ltd.'s most recent priced offering document is a 424B5 filed 2026-03-12. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did KOS last announce or register an offering?

The most recent registration is a S-3ASR filed 2024-06-20. 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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