Offerings // AMARIN CORP PLC\UK

AMRN offering history

Every offering-related filing in AMARIN CORP PLC\UK’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,000 filings back to Feb 3, 2012.

Last executed offering

Jul 19, 2019

424B5 — priced deal (shares or notes)

Last registration (announced)

Aug 2, 2023

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
Jul 31, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 15, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 2, 2023	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Feb 26, 2020	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jul 19, 2019	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 17, 2019	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Nov 28, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Nov 26, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Nov 7, 2018	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Oct 19, 2018	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jan 31, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jan 29, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 1, 2017	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Mar 1, 2017	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jan 25, 2017	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jan 20, 2017	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Sep 14, 2016	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 26, 2016	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 12, 2016	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 10, 2016	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 1, 2015	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Nov 20, 2015	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 7, 2015	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jul 24, 2015	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jul 10, 2015	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 1, 2015	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 1, 2015	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Apr 24, 2015	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Apr 9, 2015	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Mar 30, 2015	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 11, 2015	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 22, 2014	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 7, 2014	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
May 21, 2014	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jul 10, 2013	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 8, 2013	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Apr 26, 2012	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 9, 2012	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital

AMRN 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 AMRN workspace →

AMRN offering FAQ

When did AMRN last execute an offering?

Per SEC filings, AMARIN CORP PLC\UK's most recent priced offering document is a 424B5 filed 2019-07-19. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did AMRN last announce or register an offering?

The most recent registration is a S-3 filed 2023-08-02. 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.