Offerings // Arcturus Therapeutics Holdings Inc.

ARCT offering history

Every offering-related filing in Arcturus Therapeutics Holdings Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 410 filings back to Mar 18, 2019.

Last executed offering

Aug 7, 2023

424B5 — priced deal (shares or notes)

Last registration (announced)

Dec 30, 2025

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
Dec 30, 2025	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Aug 7, 2023	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 30, 2022	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 23, 2022	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Feb 22, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Dec 8, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 7, 2020	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Dec 7, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 30, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 28, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 26, 2020	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 22, 2020	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
May 21, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 21, 2020	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 8, 2020	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Apr 17, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Apr 16, 2020	S-3MEF →	REGISTERED	S-3MEF registration — capacity to sell shares, not a sale yet
Apr 15, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 27, 2020	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 12, 2019	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Sep 27, 2019	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 5, 2019	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 2, 2019	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 29, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 26, 2019	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Jun 21, 2019	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jun 20, 2019	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Apr 12, 2019	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 12, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin

ARCT 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 ARCT workspace →

ARCT offering FAQ

When did ARCT last execute an offering?

Per SEC filings, Arcturus Therapeutics Holdings Inc.'s most recent priced offering document is a 424B5 filed 2023-08-07. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did ARCT last announce or register an offering?

The most recent registration is a S-3 filed 2025-12-30. 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.