VXRT offering history
Every offering-related filing in Vaxart, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,000 filings back to May 27, 2011.
| Date | Filing | What it means | |
|---|---|---|---|
| May 19, 2026 | 424B3 → | UPDATE | Prospectus update — often a resale registration, not necessarily new capital |
| May 18, 2026 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| May 18, 2026 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| May 8, 2026 | S-1 → | REGISTERED | S-1 registration — capacity to sell shares, not a sale yet |
| May 4, 2026 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Apr 30, 2026 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Apr 17, 2026 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Apr 16, 2026 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Nov 5, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Mar 21, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Oct 8, 2024 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 17, 2024 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jan 18, 2024 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| 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) |
| May 9, 2023 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| May 5, 2023 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Mar 17, 2023 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Sep 16, 2021 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Sep 16, 2021 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Oct 13, 2020 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jul 8, 2020 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Mar 2, 2020 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Oct 2, 2019 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Sep 27, 2019 | 424B4 → | EXECUTED | Final prospectus — offering priced (typical for IPOs and marketed share deals) |
| Sep 26, 2019 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Sep 25, 2019 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Sep 24, 2019 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Sep 20, 2019 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Sep 11, 2019 | S-1 → | REGISTERED | S-1 registration — capacity to sell shares, not a sale yet |
| Apr 11, 2019 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Apr 10, 2019 | 424B4 → | EXECUTED | Final prospectus — offering priced (typical for IPOs and marketed share deals) |
| Apr 8, 2019 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Apr 8, 2019 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Mar 20, 2019 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Mar 20, 2019 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Mar 15, 2019 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Mar 14, 2019 | S-3/A → | REGISTERED | S-3/A registration — capacity to sell shares, not a sale yet |
| Feb 20, 2019 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Feb 6, 2019 | S-1 → | REGISTERED | S-1 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.
VXRT offering FAQ
When did VXRT last execute an offering?
Per SEC filings, Vaxart, Inc.'s most recent priced offering document is a 424B5 filed 2026-05-04. Note a 424B takedown can price shares or notes (debt) — the linked document says which.
When did VXRT last announce or register an offering?
The most recent registration is a S-1/A filed 2026-05-18. 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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