Offerings // AXCELIS TECHNOLOGIES INC

ACLS offering history

Every offering-related filing in AXCELIS TECHNOLOGIES INC’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,001 filings back to May 23, 2012.

Last executed offering

None found

in filings back to May 23, 2012

Last registration (announced)

Aug 3, 2023

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
Dec 31, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Dec 31, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 3, 2023	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
May 29, 2020	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Apr 14, 2017	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Apr 7, 2017	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Dec 4, 2013	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 25, 2013	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet

ACLS 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 ACLS workspace →

ACLS offering FAQ

When did ACLS last execute an offering?

No executed-offering document (424B pricing supplement or 8-K item 3.02) appears in the 1001 filings EDGAR returns for AXCELIS TECHNOLOGIES INC, reviewed back to 2012-05-23.

When did ACLS last announce or register an offering?

The most recent registration is a S-3ASR filed 2023-08-03. 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.