NGG offering history
Every offering-related filing in NATIONAL GRID PLC’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,000 filings back to Feb 4, 2003.
| Date | Filing | What it means | |
|---|---|---|---|
| Jun 5, 2026 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 4, 2026 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 4, 2026 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Aug 28, 2024 | F-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jan 9, 2024 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jan 8, 2024 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jan 8, 2024 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Jun 8, 2023 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Jun 8, 2023 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 6, 2023 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 8, 2021 | F-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jun 4, 2018 | F-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jul 17, 2015 | F-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jul 20, 2012 | F-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jun 16, 2009 | F-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jul 20, 2006 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Jul 20, 2006 | 424B2 → | EXECUTED | Prospectus supplement priced — shares or notes (large filers: often a bond deal) |
| Jul 14, 2006 | 424B2 → | EXECUTED | Prospectus supplement priced — shares or notes (large filers: often a bond deal) |
| Jun 28, 2006 | F-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Sep 21, 2005 | RW → | WITHDRAWN | Registration withdrawn |
| Sep 6, 2005 | RW → | WITHDRAWN | Registration withdrawn |
| Nov 17, 2004 | F-3 → | REGISTERED | F-3 registration — capacity to sell shares, not a sale yet |
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.
NGG offering FAQ
When did NGG last execute an offering?
Per SEC filings, NATIONAL GRID PLC's most recent priced offering document is a 424B5 filed 2026-06-05. Note a 424B takedown can price shares or notes (debt) — the linked document says which.
When did NGG last announce or register an offering?
The most recent registration is a F-3ASR filed 2024-08-28. 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.
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