Korro Bio, Inc. SEC filings KRRO
Korro Bio, Inc. has 830 filings in SEC EDGAR's recent list, going back to Apr 14, 2017. Its latest annual report, Form ARS, was filed on Apr 16, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (agreement ended, results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 424B3 | Prospectus | May 12, 2026 | — |
| 424B5 | Prospectus supplement | Mar 20, 2026 | — |
| S-3 | Shelf registration | Mar 13, 2026 | — |
| S-8 | Employee stock plan registration | Jan 27, 2026 | — |
| S-8 | Employee stock plan registration | Mar 18, 2025 | — |
| 424B3 | Prospectus | Dec 10, 2024 | — |
| 424B3 | Prospectus | Dec 10, 2024 | — |
| 424B5 | Prospectus supplement | Dec 6, 2024 | — |
| POS AM | Filing | Dec 2, 2024 | — |
| POS AM | Filing | Dec 2, 2024 | — |
| S-3 | Shelf registration | Dec 2, 2024 | — |
| 424B3 | Prospectus | Nov 21, 2024 | — |
| 424B3 | Prospectus | Nov 21, 2024 | — |
| 424B3 | Prospectus | Nov 12, 2024 | — |
| 424B3 | Prospectus | Nov 12, 2024 | — |
| 424B3 | Prospectus | Nov 4, 2024 | — |
| 424B3 | Prospectus | Nov 4, 2024 | — |
| 424B3 | Prospectus | Sep 16, 2024 | — |
| 424B3 | Prospectus | Sep 16, 2024 | — |
| 424B3 | Prospectus | Aug 28, 2024 | — |
| 424B3 | Prospectus | Aug 28, 2024 | — |
| 424B3 | Prospectus | Aug 13, 2024 | — |
| 424B3 | Prospectus | Aug 13, 2024 | — |
| 424B3 | Prospectus | Jun 21, 2024 | — |
| 424B3 | Prospectus | Jun 21, 2024 | — |
| 424B3 | Prospectus | Jun 17, 2024 | — |
| 424B3 | Prospectus | Jun 17, 2024 | — |
| 424B3 | Prospectus | May 22, 2024 | — |
| S-1 | Registration statement | May 14, 2024 | — |
| 424B3 | Prospectus | May 14, 2024 | — |
| 424B3 | Prospectus | Apr 22, 2024 | — |
| 424B3 | Prospectus | Apr 18, 2024 | — |
| 424B3 | Prospectus | Mar 28, 2024 | — |
| POS AM | Filing | Mar 26, 2024 | — |
| S-8 | Employee stock plan registration | Mar 26, 2024 | — |
| 424B3 | Prospectus | Jan 9, 2024 | — |
| 424B3 | Prospectus | Dec 22, 2023 | — |
| S-1/A | Amended registration statement | Dec 20, 2023 | — |
| S-1/A | Amended registration statement | Dec 1, 2023 | — |
| S-8 | Employee stock plan registration | Nov 6, 2023 | — |
| S-3 | Shelf registration | Nov 6, 2023 | — |
| 424B3 | Prospectus | Sep 29, 2023 | — |
| S-4/A | Filing | Sep 28, 2023 | — |
| S-4/A | Filing | Sep 21, 2023 | — |
| S-4/A | Filing | Sep 1, 2023 | — |
| S-4 | Registration for a merger or exchange | Jul 27, 2023 | — |
| S-8 | Employee stock plan registration | Mar 17, 2022 | — |
| 424B5 | Prospectus supplement | Dec 10, 2021 | — |
| S-3 | Shelf registration | Nov 16, 2020 | — |
| S-1 | Registration statement | Aug 28, 2020 | — |
| S-8 | Employee stock plan registration | Oct 8, 2019 | — |
| 424B4 | Prospectus | Oct 4, 2019 | — |
| S-1/A | Amended registration statement | Sep 23, 2019 | — |
| S-1 | Registration statement | Sep 6, 2019 | — |
Showing 54 filings. 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
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- KRRO (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Cambridge, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1703647
- Former names
- Frequency Therapeutics, Inc. (until Nov 6, 2023)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.