PHAT offering history
Every offering-related filing in Phathom Pharmaceuticals, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 487 filings back to Jul 26, 2019.
| Date | Filing | What it means | |
|---|---|---|---|
| Jan 8, 2026 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jan 7, 2026 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jan 7, 2026 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Aug 19, 2024 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Aug 19, 2024 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Nov 17, 2023 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Nov 9, 2023 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| May 24, 2023 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| May 23, 2023 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Oct 26, 2021 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Sep 20, 2021 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Dec 17, 2020 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Dec 15, 2020 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Nov 17, 2020 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Nov 10, 2020 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Oct 28, 2019 | 424B4 → | EXECUTED | Final prospectus — offering priced (typical for IPOs and marketed share deals) |
| Oct 24, 2019 | S-1MEF → | REGISTERED | S-1MEF registration — capacity to sell shares, not a sale yet |
| Oct 24, 2019 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Oct 15, 2019 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Sep 30, 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.
PHAT offering FAQ
When did PHAT last execute an offering?
Per SEC filings, Phathom Pharmaceuticals, Inc.'s most recent priced offering document is a 424B5 filed 2026-01-08. Note a 424B takedown can price shares or notes (debt) — the linked document says which.
When did PHAT last announce or register an offering?
The most recent registration is a S-3ASR filed 2026-01-07. 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.