UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of report (Date of earliest event reported): January 12, 2026
IONIS PHARMACEUTICALS, INC.
(Exact Name of Registrant as Specified in Charter)
Delaware
(State or Other Jurisdiction of Incorporation)
| 000-19125 | 33-0336973 | |
| (Commission File No.) | (IRS Employer Identification No.) |
2855 Gazelle Court
Carlsbad, CA 92010
(Address of Principal Executive Offices and Zip Code)
Registrant’s telephone number, including area code: (760) 931-9200
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
Securities registered pursuant to Section 12(b) of the Act:
| Title of each class | Trading symbol | Name of each exchange on which registered | ||
| Common Stock, $.001 Par Value | “IONS” | The Nasdaq Stock Market, LLC |
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (Section 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (Section 240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
| Item 2.02 | Results of Operations and Financial Condition. |
On January 12, 2026, Ionis Pharmaceuticals, Inc. (the “Company”) issued a press release announcing TRYNGOLZA® 2025 preliminary U.S. net product sales of $105 million. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.
The preliminary selected financial results reported by the Company are unaudited, subject to adjustment, and provided as an approximation in advance of the Company’s announcement of complete financial results in February 2026.
The information in this Item 2.02 and the exhibit attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing.
| Item 9.01 | Financial Statements and Exhibits. |
(d) Exhibits.
| Exhibit No. | Description |
| Press Release dated January 12, 2026. | |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| | Ionis Pharmaceuticals, Inc. | |
| | | |
| Dated: January 12, 2026 | By: | /s/ Patrick R. O’Neil |
| | Patrick R. O’Neil | |
| Executive Vice President, Chief Legal Officer and General Counsel | ||