Offerings // AtriCure, Inc.

ATRC offering history

Every offering-related filing in AtriCure, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,001 filings back to Dec 19, 2012.

Last executed offering

May 13, 2020

424B5 — priced deal (shares or notes)

Last registration (announced)

Feb 14, 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
Feb 14, 2025	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Feb 17, 2022	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
May 13, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
May 11, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 25, 2019	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Aug 13, 2019	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 12, 2019	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 8, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 1, 2019	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Oct 5, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 3, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 24, 2016	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 24, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 23, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 22, 2016	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Jun 17, 2016	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Nov 23, 2015	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 10, 2015	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Oct 14, 2015	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Oct 5, 2015	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Feb 14, 2014	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Feb 14, 2014	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 12, 2014	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Feb 6, 2014	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Feb 6, 2014	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 3, 2014	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Jan 15, 2014	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jan 2, 2014	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Dec 19, 2013	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jan 16, 2013	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jan 15, 2013	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)

ATRC 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 ATRC workspace →

ATRC offering FAQ

When did ATRC last execute an offering?

Per SEC filings, AtriCure, Inc.'s most recent priced offering document is a 424B5 filed 2020-05-13. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did ATRC last announce or register an offering?

The most recent registration is a S-3ASR filed 2025-02-14. 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.