Offerings // Aterian, Inc.

ATER offering history

Every offering-related filing in Aterian, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 500 filings back to Nov 2, 2018.

Last executed offering

Oct 23, 2026

8-K — priced deal (shares or notes)

Last registration (announced)

Jul 20, 2026

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
Oct 23, 2026	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jul 27, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jul 20, 2026	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jul 20, 2026	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Apr 29, 2026	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Oct 4, 2022	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Apr 8, 2022	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 8, 2022	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 28, 2022	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Mar 4, 2022	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Dec 27, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Sep 24, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 19, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 18, 2021	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 10, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 9, 2021	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Jun 16, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jun 15, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 15, 2021	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 28, 2021	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
May 11, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Apr 9, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Feb 9, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Feb 3, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Dec 1, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 26, 2020	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Aug 25, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 24, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 31, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 8, 2020	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jul 1, 2020	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Dec 30, 2019	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Dec 30, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 20, 2019	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Dec 10, 2019	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Jun 13, 2019	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Jun 12, 2019	FWP →	MARKETING	Free-writing prospectus — offering being marketed
Jun 12, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 6, 2019	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
May 24, 2019	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet

ATER 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 ATER workspace →

ATER offering FAQ

When did ATER last execute an offering?

Per SEC filings, Aterian, Inc.'s most recent priced offering document is a 8-K filed 2026-10-23. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did ATER last announce or register an offering?

The most recent registration is a S-3 filed 2026-07-20. 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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