IONIS PHARMACEUTICALS INC
For the period ended Dec 31, 2025. Filed Feb 26, 2026.
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FY2025 · Filed Feb 26, 2026
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Item 2. Properties
As of February 19, 2026, the following are the primary facilities in which we operate:
| Owned · Initial Lease · Lease | |||||
|---|---|---|---|---|---|
| Property Description | Location | Square Footage | or Leased | Term End Date | Extension Options |
| Laboratory and office space facility | Carlsbad, CA | 176,300 | Leased | 2037 | Two, five-year options to extend |
| Laboratory and office space facility | Carlsbad, CA | 164,800 | Leased | 2040 | Two, five-year options to extend |
| Office and meeting space facility | Carlsbad, CA | 74,000 | Leased | 2037 | Two, five-year options to extend |
| Manufacturing facility | Carlsbad, CA | 26,800 | Owned | ||
| Manufacturing support facility | Carlsbad, CA | 25,800 | Leased | 2031 | None |
| Office space facility | Boston, MA | 14,300 | Leased | 2038 | None |
| Office space facility | Carlsbad, CA | 5,800 | Leased | 2027 | None |
| Warehouse facility | Carlsbad, CA | 4,200 | Leased | 2028 | None |
| Office space facility | Dublin, Ireland | 3,900 | Leased | 2030 | None |
We believe that our current and future facilities will be adequate for the foreseeable future. Refer to Part IV, Section 15, Note 7, Long-Term Obligations and Commitments, in the Notes to the Consolidated Financial Statements for details on our facilities.
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