TNDM offering history
Every offering-related filing in TANDEM DIABETES CARE INC’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,001 filings back to Nov 16, 2016.
| Date | Filing | What it means | |
|---|---|---|---|
| Feb 27, 2026 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Mar 11, 2024 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| May 15, 2020 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Aug 3, 2018 | S-3MEF → | REGISTERED | S-3MEF registration — capacity to sell shares, not a sale yet |
| Aug 3, 2018 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Aug 2, 2018 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| May 9, 2018 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Apr 26, 2018 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Feb 9, 2018 | S-1MEF → | REGISTERED | S-1MEF registration — capacity to sell shares, not a sale yet |
| Feb 9, 2018 | 424B4 → | EXECUTED | Final prospectus — offering priced (typical for IPOs and marketed share deals) |
| Feb 8, 2018 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Feb 8, 2018 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Feb 8, 2018 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Jan 29, 2018 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Jan 16, 2018 | S-1 → | REGISTERED | S-1 registration — capacity to sell shares, not a sale yet |
| Dec 22, 2017 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Dec 18, 2017 | S-3 → | REGISTERED | S-3 registration — capacity to sell shares, not a sale yet |
| Oct 13, 2017 | S-3MEF → | REGISTERED | S-3MEF registration — capacity to sell shares, not a sale yet |
| Oct 13, 2017 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Oct 12, 2017 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jul 27, 2017 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Mar 24, 2017 | 424B4 → | EXECUTED | Final prospectus — offering priced (typical for IPOs and marketed share deals) |
| Mar 23, 2017 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Mar 22, 2017 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Mar 22, 2017 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Mar 20, 2017 | S-1/A → | REGISTERED | S-1/A registration — capacity to sell shares, not a sale yet |
| Mar 8, 2017 | 8-K → | EXECUTED | Unregistered share sale disclosed (8-K item 3.02) |
| Mar 8, 2017 | 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.
TNDM offering FAQ
When did TNDM last execute an offering?
Per SEC filings, TANDEM DIABETES CARE INC's most recent priced offering document is a 8-K filed 2026-02-27. Note a 424B takedown can price shares or notes (debt) — the linked document says which.
When did TNDM last announce or register an offering?
The most recent registration is a S-3MEF filed 2018-08-03. 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.