Offerings // Emergent BioSolutions Inc.

EBS offering history

Every offering-related filing in Emergent BioSolutions Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,001 filings back to Dec 29, 2014.

Last executed offering

Apr 17, 2026

8-K — priced deal (shares or notes)

Last registration (announced)

Aug 7, 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
Apr 17, 2026	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 15, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Aug 7, 2025	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Mar 24, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Mar 24, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 4, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Dec 4, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Dec 4, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Dec 2, 2024	S-1/A →	REGISTERED	S-1/A registration — capacity to sell shares, not a sale yet
Nov 12, 2024	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Sep 17, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Sep 3, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 18, 2023	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 9, 2021	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Oct 15, 2018	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 28, 2018	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 3, 2018	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Nov 14, 2017	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 22, 2015	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)

EBS 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 EBS workspace →

EBS offering FAQ

When did EBS last execute an offering?

Per SEC filings, Emergent BioSolutions Inc.'s most recent priced offering document is a 8-K filed 2026-04-17. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did EBS last announce or register an offering?

The most recent registration is a S-3 filed 2025-08-07. 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.

Free to use. No account, no card.