Werewolf Therapeutics, Inc. SEC filings HOWL
Werewolf Therapeutics, Inc. has 450 filings in SEC EDGAR's recent list, going back to Aug 15, 2019. Its latest annual report, Form 10-K, was filed on Mar 27, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Jul 31, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 21, 2026 (material agreement, unregistered share sale, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| S-4/A | Registration of securities issued in business combination transactions | Oct 26, 2026 | — |
| S-4 | Registration for a merger or exchange | Sep 22, 2026 | — |
| S-3 | Shelf registration | May 8, 2025 | — |
| S-8 | Employee stock plan registration | May 8, 2025 | — |
| 424B5 | Prospectus supplement | Mar 11, 2025 | — |
| S-8 | Employee stock plan registration | Mar 11, 2025 | — |
| S-8 POS | Filing | Aug 8, 2024 | — |
| S-8 | Employee stock plan registration | Mar 7, 2024 | — |
| 424B5 | Prospectus supplement | Feb 9, 2024 | — |
| S-8 | Employee stock plan registration | Mar 23, 2023 | — |
| S-3 | Shelf registration | May 10, 2022 | — |
| S-8 | Employee stock plan registration | Mar 24, 2022 | — |
| 424B4 | Prospectus | Apr 30, 2021 | — |
| S-8 | Employee stock plan registration | Apr 30, 2021 | — |
| S-1MEF | Filing | Apr 29, 2021 | — |
| S-1/A | Amended registration statement | Apr 26, 2021 | — |
| S-1 | Registration statement | Apr 8, 2021 | — |
Showing 17 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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- HOWL (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Waltham, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company, Emerging growth company
- SEC CIK
- 1785530
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.