Crescent Biopharma, Inc. SEC filings CBIO
Crescent Biopharma, Inc. has 676 filings in SEC EDGAR's recent list, going back to Jul 10, 2003. Its latest annual report, Form 10-K, was filed on Feb 26, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Jul 30, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 15, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 27, 2026 | — |
| 8-K |
Current report
Other events
|
Oct 15, 2026 | Oct 15, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 16, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 16, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 16, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 16, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 16, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 16, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 16, 2026 |
| S-8 | Employee stock plan registration | Sep 18, 2026 | — |
| 144 | Notice of proposed sale | Sep 17, 2026 | — |
| 144 | Notice of proposed sale | Sep 17, 2026 | — |
| 144 | Notice of proposed sale | Sep 16, 2026 | — |
| 144 | Notice of proposed sale | Sep 16, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| EFFECT | Filing | Jul 31, 2026 | — |
| POS AM | Filing | Jul 30, 2026 | — |
| 424B3 | Prospectus | Jul 30, 2026 | — |
| 10-Q | Quarterly report | Jul 30, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2026 | Jul 30, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 20, 2026 | — |
| 4 | Insider transaction | Jul 20, 2026 | Jul 16, 2026 |
| 8-K |
Current report
Other events
|
Jul 15, 2026 | Jul 14, 2026 |
| 424B5 | Prospectus supplement | Jul 15, 2026 | — |
| 8-K |
Current report
Results of operations
|
Jul 14, 2026 | Jul 14, 2026 |
| 424B5 | Prospectus supplement | Jul 14, 2026 | — |
| EFFECT | Filing | Jul 10, 2026 | — |
| S-3 | Shelf registration | Jul 1, 2026 | — |
| 4 | Insider transaction | Jun 23, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 22, 2026 |
| 424B3 | Prospectus | Jun 22, 2026 | — |
| 10-Q/A | Amended quarterly report | Jun 22, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 3, 2026 | Jun 2, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2026 | — |
| 424B3 | Prospectus | Apr 29, 2026 | — |
| 8-K |
Current report
Results of operations
|
Apr 29, 2026 | Apr 29, 2026 |
| 10-Q | Quarterly report | Apr 29, 2026 | Mar 31, 2026 |
| DEFA14A | Additional proxy material | Apr 21, 2026 | — |
| DEFA14A | Additional proxy material | Apr 21, 2026 | — |
| DEF 14A | Proxy statement | Apr 21, 2026 | Jun 2, 2026 |
| 424B3 | Prospectus | Mar 17, 2026 | — |
| EFFECT | Filing | Mar 3, 2026 | — |
| POS AM | Filing | Mar 3, 2026 | — |
| 424B3 | Prospectus | Feb 26, 2026 | — |
| S-8 | Employee stock plan registration | Feb 26, 2026 | — |
| 8-K |
Current report
Results of operations
|
Feb 26, 2026 | Feb 26, 2026 |
| 10-K | Annual report | Feb 26, 2026 | Dec 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2026 | — |
| EFFECT | Filing | Jan 15, 2026 | — |
| 424B3 | Prospectus | Jan 15, 2026 | — |
| CORRESP | Letter to the SEC | Jan 13, 2026 | — |
| UPLOAD | Letter from the SEC | Jan 12, 2026 | — |
| S-1 | Registration statement | Jan 7, 2026 | — |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| S-4 POS | Filing | Dec 12, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Dec 11, 2025 | — |
| 4 | Insider transaction | Dec 10, 2025 | Dec 8, 2025 |
| 4 | Insider transaction | Dec 10, 2025 | Dec 8, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 8, 2025 | — |
| 4 | Insider transaction | Dec 8, 2025 | Dec 4, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure, Other events
|
Dec 4, 2025 | Dec 2, 2025 |
| S-8 | Employee stock plan registration | Nov 6, 2025 | — |
| 8-A12B/A | Filing | Nov 6, 2025 | — |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 9, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 20, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 8-K |
Current report
Results of operations, Officer or director change
|
Jul 31, 2025 | Jul 29, 2025 |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 16, 2025 | Jul 16, 2025 |
| 3 | Initial insider ownership | Jul 15, 2025 | Jul 7, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 8, 2025 | — |
| 3 | Initial insider ownership | Jun 30, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 30, 2025 | Jun 13, 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 |
| SCHEDULE 13D | Ownership over 5% (active) | Jun 23, 2025 | — |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| 3 | Initial insider ownership | Jun 23, 2025 | Jun 13, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 23, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 20, 2025 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Results of operations, Change to shareholder rights, Auditor change, Change in control, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure
|
Jun 18, 2025 | Jun 13, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 13, 2025 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure, Other events
|
Jun 6, 2025 | Jun 5, 2025 |
| 425 | Filing | May 30, 2025 | — |
| 8-K |
Current report
Other events
|
May 30, 2025 | May 30, 2025 |
| 425 | Filing | May 29, 2025 | — |
| SEC STAFF LETTER | Filing | May 14, 2025 | — |
| EFFECT | Filing | May 14, 2025 | — |
| 10-Q | Quarterly report | May 14, 2025 | Mar 31, 2025 |
| 424B3 | Prospectus | May 14, 2025 | — |
| CORRESP | Letter to the SEC | May 13, 2025 | — |
| CORRESP | Letter to the SEC | May 12, 2025 | — |
| S-4/A | Filing | May 12, 2025 | — |
| UPLOAD | Letter from the SEC | May 8, 2025 | — |
| S-4/A | Filing | Apr 29, 2025 | — |
| 425 | Filing | Apr 29, 2025 | — |
| 8-K |
Current report
Material agreement
|
Apr 29, 2025 | Apr 28, 2025 |
| CORRESP | Letter to the SEC | Apr 28, 2025 | — |
| 425 | Filing | Apr 28, 2025 | — |
| UPLOAD | Letter from the SEC | Apr 22, 2025 | — |
| CORRESP | Letter to the SEC | Apr 4, 2025 | — |
| CORRESP | Letter to the SEC | Apr 4, 2025 | — |
| S-4/A | Form s-4/a | Apr 4, 2025 | — |
| 425 | Filing | Apr 3, 2025 | — |
| 425 | Filing | Apr 3, 2025 | — |
| SEC STAFF LETTER | Filing | Mar 18, 2025 | — |
| UPLOAD | Letter from the SEC | Mar 17, 2025 | — |
| 425 | Filing | Feb 28, 2025 | — |
| 425 | Filing | Feb 27, 2025 | — |
| 425 | Filing | Feb 25, 2025 | — |
| 8-K |
Current report
Agreement ended, Officer or director change
|
Feb 25, 2025 | Feb 19, 2025 |
| S-4 | Registration for a merger or exchange | Feb 18, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 425 | Filing | Feb 14, 2025 | — |
| 8-K |
Current report
Material agreement
|
Feb 14, 2025 | Feb 14, 2025 |
| 10-K | Annual report | Feb 13, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Officer or director change
|
Jan 31, 2025 | Jan 29, 2025 |
| DEFA14A | Additional proxy material | Jan 13, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 13, 2025 | Jan 13, 2025 |
| 8-K |
Current report
Listing notice
|
Dec 26, 2024 | Dec 19, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 27, 2024 | — |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| DEFA14A | Additional proxy material | Nov 7, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 7, 2024 | Nov 7, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 6, 2024 | — |
| SC 13D | Ownership over 5% (active) | Nov 4, 2024 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| DEFA14A | Additional proxy material | Oct 29, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change in control, Officer or director change, Regulation FD disclosure, Other events
|
Oct 29, 2024 | Oct 28, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 15, 2024 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2024 | — |
| 4 | Insider transaction | Aug 9, 2024 | Aug 7, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 4 | Insider transaction | Aug 7, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 1, 2024 |
| 4 | Insider transaction | Jul 30, 2024 | Jul 26, 2024 |
| 8-K |
Current report
Exit or restructuring costs, Officer or director change, Regulation FD disclosure
|
Jul 30, 2024 | Jul 24, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 29, 2024 | — |
| 3 | Initial insider ownership | Jul 29, 2024 | Jul 25, 2024 |
| 8-K |
Current report
Listing notice
|
Jun 26, 2024 | Jun 21, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 4 | Insider transaction | Jun 20, 2024 | Jun 18, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 13, 2024 | Jun 10, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 4, 2024 | Jun 4, 2024 |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | May 8, 2024 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 6, 2024 | May 6, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 2, 2024 | May 1, 2024 |
| 4 | Insider transaction | May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Mar 29, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Mar 29, 2023 |
| 4 | Insider transaction | Apr 2, 2024 | Mar 29, 2024 |
| ARS | Annual report to shareholders | Apr 1, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Apr 1, 2024 | May 1, 2024 |
| S-8 | Employee stock plan registration | Mar 27, 2024 | — |
| 8-K |
Current report
Results of operations
|
Mar 27, 2024 | Mar 27, 2024 |
| 10-K | Annual report | Mar 27, 2024 | Dec 31, 2023 |
| PRE 14A | Preliminary proxy statement | Mar 22, 2024 | May 1, 2024 |
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
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- CBIO (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- Cayman Islands
- Headquarters
- Waltham, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1253689
- Former names
- GLYCOMIMETICS INC (until Jun 23, 2025)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.