Boundless Bio, Inc. SEC filings BOLD
Boundless Bio, Inc. has 162 filings in SEC EDGAR's recent list, going back to Mar 12, 2020. Its latest annual report, Form ARS, was filed on Apr 28, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 7, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 28, 2026 (material agreement). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 5, 2026 | Nov 3, 2026 |
| 4 | Insider transaction | Oct 29, 2026 | Oct 27, 2026 |
| 4 | Insider transaction | Oct 26, 2026 | Oct 22, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Oct 16, 2026 |
| 4 | Insider transaction | Aug 28, 2026 | Aug 26, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 27, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 4 | Insider transaction | Jul 21, 2026 | Jul 17, 2026 |
| 4 | Insider transaction | Jul 16, 2026 | Jul 14, 2026 |
| 4 | Insider transaction | Jul 13, 2026 | Jul 9, 2026 |
| 4 | Insider transaction | Jul 8, 2026 | Jul 6, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 29, 2026 | — |
| 4 | Insider transaction | Jun 29, 2026 | Jun 25, 2026 |
| 3 | Initial insider ownership | Jun 29, 2026 | Jun 25, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 15, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2026 | — |
| 4 | Insider transaction | Jan 26, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 26, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 26, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 26, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 26, 2026 | Jan 23, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Dec 4, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Jun 23, 2025 | Jun 23, 2025 |
| 4 | Insider transaction | Jun 23, 2025 | Jun 23, 2025 |
| 4 | Insider transaction | Jun 23, 2025 | Jun 23, 2025 |
| 4 | Insider transaction | Jun 23, 2025 | Jun 23, 2025 |
| 4 | Insider transaction | Jun 23, 2025 | Jun 23, 2025 |
| 4 | Insider transaction | Jun 23, 2025 | Jun 23, 2025 |
| 4 | Insider transaction | Feb 3, 2025 | Feb 3, 2025 |
| 3 | Initial insider ownership | Feb 3, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 22, 2025 |
| SC 13D | Ownership over 5% (active) | Oct 29, 2024 | — |
| 3 | Initial insider ownership | Oct 15, 2024 | Oct 11, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Jun 20, 2024 | Jun 20, 2024 |
| SC 13G | Ownership over 5% (passive) | Apr 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Apr 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Apr 10, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Apr 9, 2024 | — |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 4 | Insider transaction | Mar 29, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 27, 2024 |
Showing 90 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
- BOLD (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- La Jolla, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company, Emerging growth company
- SEC CIK
- 1782303
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.