Offerings // MEDICINOVA INC

MNOV offering history

Every offering-related filing in MEDICINOVA INC’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 878 filings back to Apr 8, 2003.

Last executed offering

Dec 30, 2025

424B5 — priced deal (shares or notes)

Last registration (announced)

Dec 5, 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	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 11, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 5, 2025	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Sep 30, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 22, 2025	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Sep 30, 2022	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 6, 2022	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 26, 2022	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Feb 12, 2021	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Feb 10, 2021	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 1, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jan 29, 2021	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jan 12, 2021	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 23, 2019	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 22, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 9, 2019	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Feb 8, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Feb 7, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 2, 2017	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Sep 22, 2017	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Dec 9, 2016	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Dec 9, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 29, 2016	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Sep 16, 2016	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 29, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 24, 2016	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Dec 18, 2015	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Dec 1, 2015	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Aug 19, 2015	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 18, 2015	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 22, 2015	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 16, 2013	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
May 10, 2013	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Apr 18, 2013	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 3, 2012	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 16, 2012	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Aug 22, 2012	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 21, 2012	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 13, 2011	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 6, 2011	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)

MNOV 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 MNOV workspace →

MNOV offering FAQ

When did MNOV last execute an offering?

Per SEC filings, MEDICINOVA INC's most recent priced offering document is a 424B5 filed 2025-12-30. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did MNOV last announce or register an offering?

The most recent registration is a S-3 filed 2025-12-05. 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.