Offerings // NIOCORP DEVELOPMENTS LTD

NIOBW offering history

Every offering-related filing in NIOCORP DEVELOPMENTS LTD’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 603 filings back to Feb 8, 2011.

Last executed offering

Feb 25, 2026

424B2 — priced deal (shares or notes)

Last registration (announced)

Oct 10, 2025

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
Feb 25, 2026	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Feb 24, 2026	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Jan 20, 2026	424B7 →	UPDATE	Resale prospectus — existing holders registering to sell
Oct 14, 2025	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Oct 14, 2025	424B2 →	EXECUTED	Prospectus supplement priced — shares or notes (large filers: often a bond deal)
Oct 10, 2025	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Sep 29, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Sep 26, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Sep 18, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jul 18, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jul 17, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 18, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Apr 16, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Mar 4, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Mar 4, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 19, 2025	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Jan 31, 2025	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Nov 5, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Nov 1, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 27, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 24, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jun 13, 2024	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
May 31, 2024	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 31, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 15, 2024	S-1 →	REGISTERED	S-1 registration — capacity to sell shares, not a sale yet
Apr 12, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Dec 20, 2023	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Oct 30, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Oct 30, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Oct 30, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Oct 30, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Sep 1, 2023	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 9, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 9, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 9, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 9, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 4, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 4, 2023	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
May 4, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 4, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin

NIOBW 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 NIOBW workspace →

NIOBW offering FAQ

When did NIOBW last execute an offering?

Per SEC filings, NIOCORP DEVELOPMENTS LTD's most recent priced offering document is a 424B2 filed 2026-02-25. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did NIOBW last announce or register an offering?

The most recent registration is a S-3ASR filed 2025-10-10. 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.