XLO offering history
Every offering-related filing in Xilio Therapeutics, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 355 filings back to Jan 21, 2021.
| Date | Filing | What it means | |
|---|---|---|---|
| May 29, 2026 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| May 27, 2026 | S-3/A → | REGISTERED | S-3/A registration — capacity to sell shares, not a sale yet |
| May 12, 2026 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Feb 12, 2026 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Feb 11, 2026 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 3, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 2, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| May 8, 2025 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| May 6, 2025 | S-3/A → | REGISTERED | S-3/A registration — capacity to sell shares, not a sale yet |
| Mar 11, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Mar 11, 2025 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Feb 12, 2025 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Dec 19, 2024 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| May 6, 2024 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Apr 30, 2024 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Apr 15, 2024 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Mar 28, 2024 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Nov 18, 2022 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Nov 9, 2022 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Oct 22, 2021 | 424B4 → | EXECUTED | Final prospectus — offering priced (typical for IPOs and marketed share deals) |
| Oct 21, 2021 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Oct 20, 2021 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Oct 18, 2021 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Oct 1, 2021 | 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.
XLO offering FAQ
When did XLO last execute an offering?
Per SEC filings, Xilio Therapeutics, Inc.'s most recent priced offering document is a 424B5 filed 2026-02-12. Note a 424B takedown can price shares or notes (debt) — the linked document says which.
When did XLO last announce or register an offering?
The most recent registration is a S-3/A filed 2026-05-27. 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.