LeonaBio, Inc. SEC filings LONA
LeonaBio, Inc. has 469 filings in SEC EDGAR's recent list, going back to Oct 3, 2014. Its latest annual report, Form ARS, was filed on May 11, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 14, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 22, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Sep 22, 2026 | Sep 18, 2026 |
| 8-K |
Current report
Other events
|
Aug 26, 2026 | Aug 26, 2026 |
| 10-Q | Quarterly report | Aug 14, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 14, 2026 | Aug 14, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 23, 2026 | Jun 22, 2026 |
| ARS | Annual report to shareholders | May 11, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | May 11, 2026 | — |
| DEF 14A | Proxy statement | May 11, 2026 | Jun 22, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 7, 2026 | May 7, 2026 |
| 424B3 | Prospectus | Apr 2, 2026 | — |
| 424B3 | Prospectus | Apr 2, 2026 | — |
| EFFECT | Filing | Apr 1, 2026 | — |
| EFFECT | Filing | Apr 1, 2026 | — |
| S-8 | Employee stock plan registration | Apr 1, 2026 | — |
| S-8 | Employee stock plan registration | Apr 1, 2026 | — |
| CORRESP | Letter to the SEC | Mar 31, 2026 | — |
| CORRESP | Letter to the SEC | Mar 31, 2026 | — |
| S-1/A | Amended registration statement | Mar 31, 2026 | — |
| S-1/A | Amended registration statement | Mar 31, 2026 | — |
| 10-K | Annual report | Mar 31, 2026 | Dec 31, 2025 |
| 8-K/A |
Amended current report
Acquisition or sale of assets
|
Mar 31, 2026 | Dec 18, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 26, 2026 | Mar 26, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Mar 19, 2026 | Mar 18, 2026 |
| DEFR14A | Filing | Mar 10, 2026 | — |
| DEF 14A | Proxy statement | Feb 23, 2026 | Mar 18, 2026 |
| CORRESP | Letter to the SEC | Feb 20, 2026 | — |
| UPLOAD | Letter from the SEC | Feb 11, 2026 | — |
| UPLOAD | Letter from the SEC | Feb 11, 2026 | — |
| PRE 14A | Preliminary proxy statement | Feb 4, 2026 | Mar 18, 2026 |
| S-3 | Shelf registration | Jan 20, 2026 | — |
| S-3 | Shelf registration | Jan 20, 2026 | — |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure, Other events
|
Jan 9, 2026 | Jan 7, 2026 |
| 8-K/A |
Amended current report
Material agreement, Unregistered share sale, Regulation FD disclosure, Other events
|
Dec 18, 2025 | Dec 18, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure, Other events
|
Dec 18, 2025 | Dec 18, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 6, 2025 | Nov 6, 2025 |
| 8-K |
Current report
Other events
|
Oct 3, 2025 | Oct 2, 2025 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change
|
Sep 11, 2025 | Sep 10, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 7, 2025 | Aug 7, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 2, 2025 | May 29, 2025 |
| 10-Q | Quarterly report | May 9, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 9, 2025 | May 9, 2025 |
| 8-K |
Current report
Listing notice
|
Apr 16, 2025 | Apr 15, 2025 |
| ARS | Annual report to shareholders | Apr 14, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 14, 2025 | — |
| DEF 14A | Proxy statement | Apr 14, 2025 | May 29, 2025 |
| PRE 14A | Preliminary proxy statement | Apr 4, 2025 | May 29, 2025 |
| S-8 | Employee stock plan registration | Feb 27, 2025 | — |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 27, 2025 | Feb 27, 2025 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 7, 2024 | Nov 7, 2024 |
| EFFECT | Filing | Oct 28, 2024 | — |
| UPLOAD | Letter from the SEC | Oct 24, 2024 | — |
| CORRESP | Letter to the SEC | Oct 24, 2024 | — |
| S-3 | Shelf registration | Oct 21, 2024 | — |
| 8-K |
Current report
Listing notice, Other events
|
Oct 18, 2024 | Oct 16, 2024 |
| 8-K |
Current report
Officer or director change
|
Oct 7, 2024 | Oct 1, 2024 |
| 8-K |
Current report
Exit or restructuring costs, Officer or director change
|
Sep 17, 2024 | Sep 15, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 3, 2024 | Sep 3, 2024 |
| 10-Q/A | Amended quarterly report | Aug 9, 2024 | Jun 30, 2024 |
| 10-Q | Quarterly report | Aug 1, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 1, 2024 | Aug 1, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2024 | May 23, 2024 |
| 8-K |
Current report
Other events
|
May 17, 2024 | May 3, 2024 |
| 10-Q | Quarterly report | May 15, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 15, 2024 | May 15, 2024 |
| ARS | Annual report to shareholders | Apr 9, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 9, 2024 | — |
| DEF 14A | Proxy statement | Apr 9, 2024 | May 23, 2024 |
| PRE 14A | Preliminary proxy statement | Mar 28, 2024 | May 23, 2024 |
| S-8 | Employee stock plan registration | Feb 22, 2024 | — |
| 10-K | Annual report | Feb 22, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations, Officer or director change, Regulation FD disclosure
|
Feb 22, 2024 | Feb 21, 2024 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Jan 8, 2024 | Jan 4, 2024 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 9, 2023 | Nov 9, 2023 |
| 10-Q | Quarterly report | Aug 10, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 10, 2023 | Aug 10, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
May 22, 2023 | May 18, 2023 |
| 10-Q | Quarterly report | May 11, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 11, 2023 | May 11, 2023 |
| ARS | Annual report to shareholders | Apr 5, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 5, 2023 | — |
| DEF 14A | Proxy statement | Apr 5, 2023 | May 18, 2023 |
| S-8 | Employee stock plan registration | Mar 23, 2023 | — |
| 10-K | Annual report | Mar 23, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 23, 2023 | Mar 23, 2023 |
| 8-K |
Current report
Material agreement, Results of operations
|
Jan 6, 2023 | Jan 6, 2023 |
| 424B5 | Prospectus supplement | Jan 6, 2023 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Nov 18, 2022 | Nov 15, 2022 |
| 10-Q | Quarterly report | Nov 10, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 10, 2022 | Nov 10, 2022 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Oct 17, 2022 | Oct 17, 2022 |
| 10-Q | Quarterly report | Aug 15, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 15, 2022 | Aug 15, 2022 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 22, 2022 | Jun 22, 2022 |
| 8-K |
Current report
Shareholder vote results
|
May 24, 2022 | May 19, 2022 |
| DEFA14A | Additional proxy material | May 17, 2022 | — |
| DEFA14A | Additional proxy material | May 17, 2022 | — |
| DFAN14A | Dfan 14a | May 16, 2022 | — |
| 10-Q | Quarterly report | May 12, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 12, 2022 | May 12, 2022 |
| DFAN14A | Dfan 14a | May 12, 2022 | — |
| DEFA14A | Additional proxy material | May 11, 2022 | — |
| DEFA14A | Additional proxy material | May 9, 2022 | — |
| DEFA14A | Additional proxy material | May 5, 2022 | — |
| DFAN14A | Schedule 14a information | May 5, 2022 | — |
| DEFA14A | Additional proxy material | May 5, 2022 | — |
| DEFA14A | Additional proxy material | May 5, 2022 | — |
| DFAN14A | Dfan 14a | May 4, 2022 | — |
| DFAN14A | Schedule dfan14a - definitive additional materials | May 2, 2022 | — |
| DFAN14A | Schedule 14a information | Apr 27, 2022 | — |
| DEFA14A | Additional proxy material | Apr 26, 2022 | — |
| DEFA14A | Additional proxy material | Apr 26, 2022 | — |
| DFAN14A | Schedule 14a information | Apr 25, 2022 | — |
| DFAN14A | Schedule 14a information | Apr 22, 2022 | — |
| DEFA14A | Additional proxy material | Apr 20, 2022 | — |
| DFAN14A | Schedule 14a information | Apr 13, 2022 | — |
| DEFA14A | Additional proxy material | Apr 11, 2022 | — |
| DEFA14A | Additional proxy material | Apr 11, 2022 | — |
| DFAN14A | Filing | Apr 11, 2022 | — |
| DEFC14A | Filing | Apr 11, 2022 | — |
| PREC14A | Filing | Apr 8, 2022 | — |
| UPLOAD | Letter from the SEC | Apr 6, 2022 | — |
| DEFA14A | Additional proxy material | Apr 5, 2022 | — |
| DEFC14A | Filing | Apr 5, 2022 | — |
| PREC14A | Filing | Mar 30, 2022 | — |
| DEFA14A | Additional proxy material | Mar 30, 2022 | — |
| DFAN14A | Filing | Mar 30, 2022 | — |
| DEFA14A | Additional proxy material | Mar 28, 2022 | — |
| S-8 | Employee stock plan registration | Mar 28, 2022 | — |
| 10-K | Annual report | Mar 28, 2022 | Dec 31, 2021 |
| CORRESP | Letter to the SEC | Mar 25, 2022 | — |
| PREC14A | Filing | Mar 25, 2022 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 24, 2022 | Mar 24, 2022 |
| 8-K |
Current report
Officer or director change
|
Mar 21, 2022 | Mar 18, 2022 |
| 8-K |
Current report
Officer or director change, Other events
|
Jan 31, 2022 | Jan 27, 2022 |
| EFFECT | Filing | Nov 24, 2021 | — |
| CORRESP | Letter to the SEC | Nov 22, 2021 | — |
| UPLOAD | Letter from the SEC | Nov 22, 2021 | — |
| S-3 | Shelf registration | Nov 15, 2021 | — |
| 10-Q | Quarterly report | Nov 10, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 10, 2021 | Nov 10, 2021 |
| 8-K |
Current report
Officer or director change, Other events
|
Oct 21, 2021 | Oct 18, 2021 |
| 10-Q | Quarterly report | Aug 16, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 16, 2021 | Aug 16, 2021 |
| 8-K |
Current report
Other events
|
Aug 9, 2021 | Aug 4, 2021 |
| 8-K |
Current report
Officer or director change
|
Jun 21, 2021 | Jun 16, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 1, 2021 | May 27, 2021 |
| 10-Q | Quarterly report | May 13, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 13, 2021 | May 13, 2021 |
| DEFA14A | Additional proxy material | Apr 16, 2021 | — |
| DEF 14A | Proxy statement | Apr 16, 2021 | May 27, 2021 |
| S-8 | Employee stock plan registration | Mar 26, 2021 | — |
| 10-K | Annual report | Mar 25, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 25, 2021 | Mar 25, 2021 |
| 8-K |
Current report
Officer or director change
|
Mar 8, 2021 | Mar 4, 2021 |
| 424B4 | Prospectus | Jan 21, 2021 | — |
| EFFECT | Filing | Jan 20, 2021 | — |
| S-1 | Registration statement | Jan 19, 2021 | — |
| CORRESP | Letter to the SEC | Jan 15, 2021 | — |
| CORRESP | Letter to the SEC | Jan 15, 2021 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 11, 2021 | Jan 8, 2021 |
| UPLOAD | Letter from the SEC | Jan 6, 2021 | — |
| DRS | Filing | Jan 6, 2021 | — |
| 8-K |
Current report
Officer or director change
|
Dec 14, 2020 | Dec 11, 2020 |
| 10-Q | Quarterly report | Nov 12, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 12, 2020 | Nov 12, 2020 |
| S-8 | Employee stock plan registration | Sep 18, 2020 | — |
| 424B4 | Prospectus | Sep 18, 2020 | — |
| EFFECT | Filing | Sep 17, 2020 | — |
| S-1MEF | Filing | Sep 17, 2020 | — |
| SEC STAFF LETTER | Filing | Sep 17, 2020 | — |
| CORRESP | Letter to the SEC | Sep 17, 2020 | — |
| S-1/A | Amended registration statement | Sep 17, 2020 | — |
| UPLOAD | Letter from the SEC | Sep 16, 2020 | — |
| CERT | Filing | Sep 16, 2020 | — |
| CORRESP | Letter to the SEC | Sep 14, 2020 | — |
| CORRESP | Letter to the SEC | Sep 14, 2020 | — |
| S-1/A | Amended registration statement | Sep 14, 2020 | — |
| CORRESP | Letter to the SEC | Sep 14, 2020 | — |
| UPLOAD | Letter from the SEC | Sep 10, 2020 | — |
| 8-A12B | Filing | Sep 9, 2020 | — |
| S-1/A | Amended registration statement | Sep 9, 2020 | — |
| SEC STAFF LETTER | Filing | Sep 4, 2020 | — |
| CORRESP | Letter to the SEC | Sep 2, 2020 | — |
| CORRESP | Letter to the SEC | Aug 26, 2020 | — |
| S-1 | Registration statement | Aug 26, 2020 | — |
| UPLOAD | Letter from the SEC | Aug 21, 2020 | — |
| DRS | Filing | Jul 24, 2020 | — |
| DRSLTR | Filing | Jul 24, 2020 | — |
| D | Filing | Jun 12, 2020 | — |
| D/A | Filing | Jan 24, 2020 | — |
| D/A | Filing | Sep 19, 2019 | — |
| D/A | Filing | Jan 23, 2019 | — |
| D | Filing | Dec 20, 2018 | — |
| D/A | Filing | Nov 1, 2017 | — |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- LONA (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- Bothell, WA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1620463
- Former names
- Athira Pharma, Inc. (until Jan 8, 2026); M3 Biotechnology, Inc. (until Jan 23, 2019)
Other Biological Products, (No Diagnostic Substances) companies
- Amgen Inc AMGN
- Gilead Sciences, Inc. GILD
- Moderna, Inc. MRNA
- Argenx SE ARGX
- Revolution Medicines, Inc. RVMD
- Biogen Inc. BIIB
- BioNTech SE BNTX
- Exelixis, Inc. EXEL
All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.