Ionis Pharmaceuticals, Inc. SEC filings IONS
Ionis Pharmaceuticals, Inc. has 1,005 filings in SEC EDGAR's recent list, going back to Jul 6, 2020. Its latest annual report, Form ARS, was filed on Apr 23, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Jul 29, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 23, 2026 (regulation fd disclosure, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Oct 23, 2026 | Oct 23, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Oct 21, 2026 | Oct 20, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 23, 2026 | Sep 23, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 4, 2026 | Sep 4, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 4, 2026 | Sep 3, 2026 |
| S-8 | Employee stock plan registration | Jul 31, 2026 | — |
| 10-Q | Quarterly report | Jul 29, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 10, 2026 | Jul 9, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jul 9, 2026 | Jul 9, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 24, 2026 | Jun 24, 2026 |
| 8-K |
Current report
Other events
|
Jun 12, 2026 | Jun 12, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Regulation FD disclosure
|
Jun 8, 2026 | Jun 4, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
May 28, 2026 | May 28, 2026 |
| 10-Q | Quarterly report | Apr 29, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2026 | Apr 29, 2026 |
| ARS | Annual report to shareholders | Apr 23, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 23, 2026 | — |
| DEF 14A | Proxy statement | Apr 23, 2026 | Jun 4, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 21, 2026 | Apr 21, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 9, 2026 | Mar 3, 2026 |
| 10-K | Annual report | Feb 26, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2026 | Feb 25, 2026 |
| 8-K |
Current report
Results of operations
|
Jan 12, 2026 | Jan 12, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jan 7, 2026 | Jan 7, 2026 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Other events
|
Nov 17, 2025 | Nov 11, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Nov 10, 2025 | Nov 8, 2025 |
| 8-K/A |
Amended current report
Material agreement
|
Nov 3, 2025 | Oct 28, 2025 |
| 10-Q | Quarterly report | Oct 29, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2025 | Oct 29, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 22, 2025 | Sep 22, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 2, 2025 | Sep 2, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Aug 21, 2025 | Aug 21, 2025 |
| S-8 | Employee stock plan registration | Jul 30, 2025 | — |
| 10-Q | Quarterly report | Jul 30, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2025 | Jul 30, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 12, 2025 | Jun 12, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2025 | Jun 5, 2025 |
| 8-K |
Current report
Other events
|
May 19, 2025 | May 19, 2025 |
| 10-Q | Quarterly report | Apr 30, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2025 | Apr 30, 2025 |
| ARS | Annual report to shareholders | Apr 25, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 25, 2025 | — |
| DEF 14A | Proxy statement | Apr 25, 2025 | Jun 5, 2025 |
| 8-K |
Current report
Material agreement
|
Mar 12, 2025 | Mar 11, 2025 |
| 10-K | Annual report | Feb 19, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 19, 2025 | Feb 19, 2025 |
| 8-K |
Current report
Other events
|
Dec 20, 2024 | Dec 19, 2024 |
| 10-Q | Quarterly report | Nov 6, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2024 | Nov 6, 2024 |
| 8-K |
Current report
Other events
|
Sep 12, 2024 | Sep 9, 2024 |
| 424B5 | Prospectus supplement | Sep 10, 2024 | — |
| 8-K |
Current report
Other events
|
Sep 9, 2024 | Sep 9, 2024 |
| 424B5 | Prospectus supplement | Sep 9, 2024 | — |
| S-8 | Employee stock plan registration | Aug 5, 2024 | — |
| 10-Q | Quarterly report | Aug 1, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2024 | Aug 1, 2024 |
| 8-K |
Current report
Material agreement
|
Jun 18, 2024 | Jun 18, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2024 | Jun 6, 2024 |
| 8-K |
Current report
Other events
|
May 31, 2024 | May 31, 2024 |
| 10-Q | Quarterly report | May 7, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 7, 2024 | May 7, 2024 |
| ARS | Annual report to shareholders | Apr 25, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 25, 2024 | — |
| DEF 14A | Proxy statement | Apr 25, 2024 | Jun 6, 2024 |
| 8-K |
Current report
Other events
|
Apr 8, 2024 | Apr 7, 2024 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Feb 29, 2024 | Feb 28, 2024 |
| 10-K | Annual report | Feb 21, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 21, 2024 | Feb 21, 2024 |
| 8-K |
Current report
Other events
|
Jan 22, 2024 | Jan 22, 2024 |
| 8-K |
Current report
Other events
|
Dec 22, 2023 | Dec 21, 2023 |
| 8-K |
Current report
Material agreement
|
Dec 18, 2023 | Dec 18, 2023 |
| 8-K |
Current report
Officer or director change
|
Dec 14, 2023 | Dec 14, 2023 |
| S-3ASR | Automatic shelf registration | Nov 24, 2023 | — |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Material agreement
|
Sep 27, 2023 | Sep 27, 2023 |
| 8-K |
Current report
Other events
|
Sep 26, 2023 | Sep 26, 2023 |
| 8-K |
Current report
Other events
|
Aug 23, 2023 | Aug 21, 2023 |
| 8-K |
Current report
Other events
|
Aug 22, 2023 | Aug 21, 2023 |
| S-8 | Employee stock plan registration | Aug 11, 2023 | — |
| 10-Q | Quarterly report | Aug 9, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2023 | Aug 9, 2023 |
| 8-K |
Current report
Agreement ended
|
Aug 4, 2023 | Aug 1, 2023 |
| 8-K |
Current report
Material agreement
|
Aug 3, 2023 | Aug 2, 2023 |
| 8-K |
Current report
Other events
|
Jul 10, 2023 | Jul 10, 2023 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Other events
|
Jun 12, 2023 | Jun 8, 2023 |
| 8-K |
Current report
Other events
|
Jun 6, 2023 | Jun 6, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 5, 2023 | Jun 1, 2023 |
| 10-Q | Quarterly report | May 3, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 3, 2023 | May 3, 2023 |
| 8-K |
Current report
Other events
|
Apr 26, 2023 | Apr 25, 2023 |
| 8-K |
Current report
Other events
|
Apr 24, 2023 | Apr 24, 2023 |
| ARS | Annual report to shareholders | Apr 20, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 20, 2023 | — |
| DEF 14A | Proxy statement | Apr 20, 2023 | — |
| 8-K |
Current report
Other events
|
Mar 27, 2023 | Mar 27, 2023 |
| 10-K | Annual report | Feb 22, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 22, 2023 | Feb 22, 2023 |
| 8-K |
Current report
Material agreement
|
Jan 9, 2023 | Jan 8, 2023 |
| 8-K |
Current report
Material agreement, Results of operations
|
Nov 14, 2022 | Nov 10, 2022 |
| 10-Q | Quarterly report | Nov 9, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2022 | Nov 9, 2022 |
| 8-K |
Current report
Agreement ended
|
Nov 4, 2022 | Oct 31, 2022 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt
|
Oct 24, 2022 | Oct 20, 2022 |
| 8-K |
Current report
Material agreement
|
Oct 12, 2022 | Oct 6, 2022 |
| 10-Q | Quarterly report | Aug 9, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2022 | Aug 9, 2022 |
| 8-K |
Current report
Listing notice
|
Jul 28, 2022 | Jul 22, 2022 |
| 8-K |
Current report
Other events
|
Jul 19, 2022 | Jul 18, 2022 |
| 8-K |
Current report
Officer or director change
|
Jul 18, 2022 | Jul 15, 2022 |
| 8-K |
Current report
Material agreement
|
Jul 11, 2022 | Jul 11, 2022 |
| 8-K |
Current report
Other events
|
Jun 21, 2022 | Jun 21, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 6, 2022 | Jun 2, 2022 |
| 10-Q | Quarterly report | May 4, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 4, 2022 | May 4, 2022 |
| DEFA14A | Additional proxy material | Apr 20, 2022 | — |
| DEF 14A | Proxy statement | Apr 20, 2022 | Jun 2, 2022 |
| 8-K |
Current report
Officer or director change
|
Mar 21, 2022 | Mar 17, 2022 |
| 10-K | Annual report | Feb 25, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2022 | Feb 24, 2022 |
| 8-K |
Current report
Agreement ended
|
Jan 31, 2022 | Jan 24, 2022 |
| 8-K |
Current report
Material agreement
|
Dec 7, 2021 | Dec 6, 2021 |
| 8-K |
Current report
Officer or director change
|
Nov 26, 2021 | Nov 26, 2021 |
| 8-K |
Current report
Other events
|
Nov 24, 2021 | Nov 24, 2021 |
| 10-Q | Quarterly report | Nov 3, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2021 | Nov 3, 2021 |
| 8-K |
Current report
Other events
|
Oct 18, 2021 | Oct 17, 2021 |
| S-8 | Employee stock plan registration | Aug 5, 2021 | — |
| 10-Q | Quarterly report | Aug 4, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2021 | Aug 4, 2021 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 4, 2021 | Jun 2, 2021 |
| DEFA14A | Additional proxy material | May 20, 2021 | — |
| 10-Q | Quarterly report | May 5, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 5, 2021 | May 5, 2021 |
| DEFA14A | Additional proxy material | Apr 23, 2021 | — |
| DEF 14A | Proxy statement | Apr 23, 2021 | Jun 2, 2021 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Other events
|
Apr 13, 2021 | Apr 6, 2021 |
| 8-K |
Current report
Exit or restructuring costs
|
Apr 6, 2021 | Apr 6, 2021 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Mar 29, 2021 | Mar 26, 2021 |
| 8-K |
Current report
Other events
|
Mar 23, 2021 | Mar 22, 2021 |
| 10-K | Annual report | Feb 24, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2021 | Feb 24, 2021 |
| UPLOAD | Letter from the SEC | Jan 26, 2021 | — |
| CORRESP | Letter to the SEC | Jan 14, 2021 | — |
| S-8 | Employee stock plan registration | Dec 31, 2020 | — |
| UPLOAD | Letter from the SEC | Dec 30, 2020 | — |
| 8-K |
Current report
Material agreement, Officer or director change
|
Dec 18, 2020 | Dec 17, 2020 |
| 8-K |
Current report
Other events
|
Dec 9, 2020 | Dec 8, 2020 |
| CT ORDER | Filing | Dec 3, 2020 | — |
| 10-Q | Quarterly report | Nov 4, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2020 | Nov 4, 2020 |
| 8-K |
Current report
Acquisition or sale of assets, Other events
|
Oct 13, 2020 | Oct 10, 2020 |
| SC TO-T/A | Filing | Oct 13, 2020 | — |
| SC TO-T/A | Filing | Oct 2, 2020 | — |
| SC TO-T/A | Filing | Sep 30, 2020 | — |
| SC TO-T/A | Filing | Sep 29, 2020 | — |
| SC TO-T/A | Filing | Sep 24, 2020 | — |
| CORRESP | Letter to the SEC | Sep 24, 2020 | — |
| SC TO-T | Filing | Sep 14, 2020 | — |
| SC TO-C | Filing | Sep 1, 2020 | — |
| SC TO-C | Filing | Aug 31, 2020 | — |
| SC TO-C | Filing | Aug 31, 2020 | — |
| 8-K |
Current report
Material agreement, Other events
|
Aug 31, 2020 | Aug 30, 2020 |
| S-8 | Employee stock plan registration | Aug 7, 2020 | — |
| S-3ASR | Automatic shelf registration | Aug 7, 2020 | — |
| 10-Q | Quarterly report | Aug 5, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2020 | Aug 5, 2020 |
Showing 168 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
- IONS (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- CA
- Headquarters
- Carlsbad, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 874015
- Former names
- ISIS PHARMACEUTICALS INC (until Dec 18, 2015)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.