RLYB offering history
Every offering-related filing in Rallybio Corp’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 310 filings back to May 7, 2018.
| Date | Filing | What it means | |
|---|---|---|---|
| Oct 15, 2026 | 424B3 → | UPDATE | Prospectus update — often a resale registration, not necessarily new capital |
| Oct 15, 2026 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Jun 1, 2026 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| May 5, 2026 | RW → | WITHDRAWN | Registration withdrawn |
| Mar 2, 2026 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Mar 13, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| May 20, 2024 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| May 10, 2024 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Apr 10, 2024 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| May 12, 2023 | 424B3 → | UPDATE | Prospectus update — often a resale registration, not necessarily new capital |
| May 12, 2023 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| May 9, 2023 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Nov 14, 2022 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Nov 10, 2022 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Aug 15, 2022 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Aug 15, 2022 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Aug 8, 2022 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Jul 30, 2021 | 424B4 → | EXECUTED | Final prospectus — offering priced (typical for IPOs and marketed share deals) |
| Jul 28, 2021 | S-1MEF → | REGISTERED | S-1MEF registration — capacity to sell shares, not a sale yet |
| Jul 28, 2021 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Jul 22, 2021 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Jul 2, 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.
RLYB offering FAQ
When did RLYB last execute an offering?
Per SEC filings, Rallybio Corp's most recent priced offering document is a 8-K filed 2026-06-01. Note a 424B takedown can price shares or notes (debt) — the linked document says which.
When did RLYB last announce or register an offering?
The most recent registration is a S-3 filed 2024-05-10. 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.
Free to use. No account, no card.