Arrowhead Pharmaceuticals, Inc. SEC filings ARWR
Arrowhead Pharmaceuticals, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Apr 30, 2010. Its latest annual report, Form ARS, was filed on Jan 27, 2026 for the period ended Jan 26, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 4, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (material agreement, new debt). The company's fiscal year ends on September 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Material agreement, New debt
|
Nov 4, 2026 | Nov 4, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2026 | Aug 4, 2026 |
| 10-Q | Quarterly report | Aug 4, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Officer or director change
|
Jun 16, 2026 | Jun 12, 2026 |
| S-8 | Employee stock plan registration | May 7, 2026 | — |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Mar 20, 2026 | Mar 19, 2026 |
| 10-Q | Quarterly report | Feb 5, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 5, 2026 | Feb 5, 2026 |
| ARS | Annual report to shareholders | Jan 27, 2026 | Jan 26, 2026 |
| DEFA14A | Additional proxy material | Jan 27, 2026 | — |
| DEF 14A | Proxy statement | Jan 27, 2026 | Jan 26, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 12, 2026 | Jan 12, 2026 |
| 8-K |
Current report
Material agreement, Other events
|
Jan 9, 2026 | Jan 7, 2026 |
| 424B5 | Prospectus supplement | Jan 9, 2026 | — |
| 424B5 | Prospectus supplement | Jan 9, 2026 | — |
| 305B2 | Filing | Jan 8, 2026 | — |
| FWP | Free writing prospectus | Jan 8, 2026 | — |
| FWP | Free writing prospectus | Jan 8, 2026 | — |
| 424B5 | Prospectus supplement | Jan 7, 2026 | — |
| 424B5 | Prospectus supplement | Jan 7, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jan 6, 2026 | Jan 6, 2026 |
| S-3ASR | Automatic shelf registration | Dec 11, 2025 | — |
| 10-K | Annual report | Nov 25, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 25, 2025 | Nov 25, 2025 |
| 8-K |
Current report
Other events
|
Nov 18, 2025 | Nov 18, 2025 |
| 10-K/A | Amended annual report | Oct 10, 2025 | Sep 30, 2024 |
| 8-K |
Current report
Other events
|
Sep 12, 2025 | Sep 11, 2025 |
| 8-K |
Current report
Other events
|
Sep 11, 2025 | Sep 10, 2025 |
| 8-K |
Current report
Material agreement
|
Sep 2, 2025 | Sep 2, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
May 12, 2025 | May 12, 2025 |
| 10-Q | Quarterly report | May 12, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 15, 2025 | Apr 11, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Mar 19, 2025 | Mar 12, 2025 |
| 424B7 | Filing | Mar 7, 2025 | — |
| 8-K |
Current report
Results of operations
|
Feb 10, 2025 | Feb 10, 2025 |
| 10-Q | Quarterly report | Feb 10, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Feb 7, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Feb 7, 2025 | Feb 7, 2025 |
| ARS | Annual report to shareholders | Jan 29, 2025 | Jan 28, 2025 |
| DEFA14A | Additional proxy material | Jan 29, 2025 | — |
| DEF 14A | Proxy statement | Jan 29, 2025 | Jan 28, 2025 |
| 424B7 | Filing | Dec 20, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Dec 18, 2024 | Dec 11, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 26, 2024 | Nov 26, 2024 |
| 10-K | Annual report | Nov 26, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2024 | Aug 8, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
May 9, 2024 | May 9, 2024 |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Mar 19, 2024 | Mar 14, 2024 |
| 8-K/A |
Amended current report
Officer or director change
|
Mar 18, 2024 | Feb 21, 2024 |
| S-8 | Employee stock plan registration | Feb 28, 2024 | — |
| DEFA14A | Additional proxy material | Feb 27, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Feb 22, 2024 | Feb 21, 2024 |
| 10-Q | Quarterly report | Feb 6, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 6, 2024 | Feb 6, 2024 |
| ARS | Annual report to shareholders | Jan 29, 2024 | Jan 26, 2024 |
| DEFA14A | Additional proxy material | Jan 26, 2024 | — |
| DEF 14A | Proxy statement | Jan 26, 2024 | Jan 26, 2024 |
| 8-K |
Current report
Officer or director change
|
Jan 22, 2024 | Jan 16, 2024 |
| 8-K |
Current report
Material agreement
|
Jan 4, 2024 | Jan 2, 2024 |
| 424B5 | Prospectus supplement | Jan 4, 2024 | — |
| 8-K |
Current report
Auditor change
|
Dec 5, 2023 | Dec 5, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 29, 2023 | Nov 29, 2023 |
| 10-K | Annual report | Nov 29, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2023 | Aug 7, 2023 |
| 10-Q | Quarterly report | Aug 7, 2023 | Jun 30, 2023 |
| UPLOAD | Letter from the SEC | May 19, 2023 | — |
| 8-K |
Current report
Results of operations
|
May 2, 2023 | May 2, 2023 |
| 10-Q | Quarterly report | May 2, 2023 | Mar 31, 2023 |
| CORRESP | Letter to the SEC | Apr 18, 2023 | — |
| UPLOAD | Letter from the SEC | Apr 4, 2023 | — |
| S-8 | Employee stock plan registration | Mar 22, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
Mar 21, 2023 | Mar 16, 2023 |
| CORRESP | Letter to the SEC | Mar 3, 2023 | — |
| 8-K |
Current report
Agreement ended, Other events
|
Feb 15, 2023 | Feb 10, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 14, 2023 | Feb 11, 2023 |
| UPLOAD | Letter from the SEC | Feb 10, 2023 | — |
| 8-K |
Current report
Other events
|
Feb 8, 2023 | Feb 7, 2023 |
| 8-K |
Current report
Acquisition or sale of assets
|
Feb 6, 2023 | Feb 6, 2023 |
| 10-Q | Quarterly report | Feb 6, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jan 30, 2023 | Jan 24, 2023 |
| DEF 14A | Proxy statement | Jan 30, 2023 | Jan 30, 2023 |
| PRE 14A | Preliminary proxy statement | Jan 20, 2023 | Mar 16, 2023 |
| 8-K |
Current report
Material agreement
|
Dec 8, 2022 | Dec 2, 2022 |
| S-3ASR | Automatic shelf registration | Dec 5, 2022 | — |
| 8-K |
Current report
Results of operations
|
Nov 28, 2022 | Nov 28, 2022 |
| 10-K | Annual report | Nov 28, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Material agreement
|
Nov 10, 2022 | Nov 9, 2022 |
| 10-Q | Quarterly report | Aug 4, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Officer or director change
|
Jul 20, 2022 | Jul 15, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 6, 2022 | Jun 1, 2022 |
| 10-Q | Quarterly report | May 10, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 10, 2022 | May 10, 2022 |
| 8-K |
Current report
Officer or director change
|
May 5, 2022 | May 2, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 25, 2022 | Apr 25, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Mar 18, 2022 | Mar 17, 2022 |
| DEFA14A | Additional proxy material | Mar 9, 2022 | — |
| 10-Q | Quarterly report | Feb 2, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 2, 2022 | Feb 2, 2022 |
| DEF 14A | Proxy statement | Jan 26, 2022 | Mar 17, 2022 |
| S-8 | Employee stock plan registration | Dec 22, 2021 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 20, 2021 | Dec 20, 2021 |
| 8-K |
Current report
Other events
|
Dec 16, 2021 | Dec 16, 2021 |
| 10-K | Annual report | Nov 22, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 22, 2021 | Nov 22, 2021 |
| 8-K |
Current report
Officer or director change
|
Aug 27, 2021 | Aug 23, 2021 |
| 10-Q | Quarterly report | Aug 5, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2021 | Aug 5, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Jun 22, 2021 | Jun 18, 2021 |
| 8-K |
Current report
Other events
|
Jun 16, 2021 | Jun 15, 2021 |
| S-8 | Employee stock plan registration | May 18, 2021 | — |
| 10-Q | Quarterly report | May 4, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 4, 2021 | May 4, 2021 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Mar 24, 2021 | Mar 18, 2021 |
| UPLOAD | Letter from the SEC | Mar 8, 2021 | — |
| CORRESP | Letter to the SEC | Feb 5, 2021 | — |
| 10-Q | Quarterly report | Feb 4, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2021 | Feb 4, 2021 |
| DEF 14A | Proxy statement | Jan 28, 2021 | Mar 18, 2021 |
| UPLOAD | Letter from the SEC | Jan 27, 2021 | — |
| 10-K | Annual report | Nov 23, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 23, 2020 | Nov 23, 2020 |
| 8-K |
Current report
Material agreement
|
Oct 9, 2020 | Oct 7, 2020 |
| 8-K |
Current report
Officer or director change
|
Sep 8, 2020 | Sep 1, 2020 |
| 424B5 | Prospectus supplement | Aug 5, 2020 | — |
| 10-Q | Quarterly report | Aug 5, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2020 | Aug 5, 2020 |
| S-8 | Employee stock plan registration | May 22, 2020 | — |
| 10-Q | Quarterly report | May 7, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 7, 2020 | May 7, 2020 |
| 8-K |
Current report
Officer or director change
|
May 1, 2020 | May 1, 2020 |
| 8-K |
Current report
Material agreement, New debt, Shareholder vote results
|
Mar 19, 2020 | Mar 14, 2020 |
| 10-Q | Quarterly report | Feb 5, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
Feb 5, 2020 | Feb 5, 2020 |
| DEF 14A | Proxy statement | Jan 28, 2020 | Mar 19, 2020 |
| PRE 14A | Preliminary proxy statement | Jan 14, 2020 | Mar 19, 2020 |
| 8-K |
Current report
Officer or director change
|
Dec 18, 2019 | Dec 12, 2019 |
| 8-K |
Current report
Material agreement
|
Dec 6, 2019 | Dec 3, 2019 |
| 424B5 | Prospectus supplement | Dec 5, 2019 | — |
| 424B5 | Prospectus supplement | Dec 2, 2019 | — |
| S-3ASR | Automatic shelf registration | Dec 2, 2019 | — |
| 10-K | Annual report | Nov 25, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 25, 2019 | Nov 25, 2019 |
| 8-K |
Current report
Officer or director change
|
Nov 21, 2019 | Nov 15, 2019 |
| 10-Q | Quarterly report | Aug 5, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2019 | Aug 5, 2019 |
| 10-Q | Quarterly report | May 8, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
May 8, 2019 | May 8, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 19, 2019 | Apr 17, 2019 |
| S-8 | Employee stock plan registration | Mar 29, 2019 | — |
| CT ORDER | Filing | Mar 18, 2019 | — |
| 8-K |
Current report
Shareholder vote results
|
Mar 15, 2019 | Mar 15, 2019 |
| 10-Q | Quarterly report | Feb 7, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 7, 2019 | Feb 7, 2019 |
| 8-K |
Current report
Officer or director change
|
Jan 29, 2019 | Jan 28, 2019 |
| DEFA14A | Additional proxy material | Jan 25, 2019 | — |
| DEF 14A | Proxy statement | Jan 25, 2019 | Mar 14, 2019 |
| 8-K |
Current report
Officer or director change
|
Jan 11, 2019 | Jan 7, 2019 |
| 10-K | Annual report | Dec 11, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Dec 11, 2018 | Dec 11, 2018 |
| S-3ASR | Automatic shelf registration | Nov 29, 2018 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Oct 4, 2018 | Oct 4, 2018 |
| 10-Q | Quarterly report | Aug 7, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2018 | Aug 7, 2018 |
| 10-Q | Quarterly report | May 8, 2018 | Mar 31, 2018 |
| 8-K |
Current report
Results of operations
|
May 8, 2018 | May 8, 2018 |
| UPLOAD | Letter from the SEC | Mar 26, 2018 | — |
| S-8 | Employee stock plan registration | Mar 22, 2018 | — |
| 8-K |
Current report
Shareholder vote results
|
Mar 20, 2018 | Mar 16, 2018 |
| CORRESP | Letter to the SEC | Mar 13, 2018 | — |
| UPLOAD | Letter from the SEC | Mar 1, 2018 | — |
| 10-Q | Quarterly report | Feb 9, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Results of operations
|
Feb 9, 2018 | Feb 9, 2018 |
| DEFA14A | Additional proxy material | Jan 25, 2018 | — |
| DEF 14A | Proxy statement | Jan 25, 2018 | Mar 16, 2018 |
| 8-K |
Current report
Material agreement
|
Jan 22, 2018 | Jan 18, 2018 |
| 424B5 | Prospectus supplement | Jan 19, 2018 | — |
| 424B5 | Prospectus supplement | Jan 17, 2018 | — |
| 8-K |
Current report
Officer or director change
|
Dec 27, 2017 | Dec 20, 2017 |
| 10-K | Annual report | Dec 12, 2017 | Sep 30, 2017 |
| 8-K |
Current report
Results of operations
|
Dec 12, 2017 | Dec 12, 2017 |
| 10-Q | Quarterly report | Aug 3, 2017 | Jun 30, 2017 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2017 | Aug 3, 2017 |
| 10-Q | Quarterly report | May 3, 2017 | Mar 31, 2017 |
| 8-K |
Current report
Results of operations
|
May 3, 2017 | May 3, 2017 |
| 8-A12B | Filing | Mar 23, 2017 | — |
| 8-K |
Current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change, Shareholder vote results
|
Mar 23, 2017 | Mar 21, 2017 |
| 10-Q | Quarterly report | Feb 6, 2017 | Dec 31, 2016 |
| 8-K |
Current report
Results of operations
|
Feb 6, 2017 | Feb 6, 2017 |
| EFFECT | Filing | Feb 3, 2017 | — |
| EFFECT | Filing | Feb 3, 2017 | — |
| CORRESP | Letter to the SEC | Feb 1, 2017 | — |
| CORRESP | Letter to the SEC | Feb 1, 2017 | — |
| DEFA14A | Additional proxy material | Feb 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
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- ARWR (Nasdaq)
- Fiscal year ends
- September 30
- Incorporated in
- DE
- Headquarters
- Pasadena, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 879407
- Former names
- ARROWHEAD RESEARCH CORP (until Apr 6, 2016); INTERACTIVE GROUP INC (until Jan 9, 2004); INTERACTIVE INC (until Feb 13, 2002)
Other Pharmaceutical Preparations companies
- ELI LILLY & Co LLY
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.