---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-23-038087"
form_type: "8-K"
ticker: "IONS"
cik: "0000874015"
company_name: "IONIS PHARMACEUTICALS INC"
filed_at: "2023-08-04T23:59:59+00:00"
generated_at: "2026-06-12T06:46:41.302946+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# IONIS terminates lease for 217K sq ft Oceanside facility after landlord misses July 31 grading milestone

## Summary
- Notified Sudberry Development of termination under Section 2.3 of Lease due to failure to commence grading by July 31, 2023.
- Lease for ~217,000 rentable sq ft manufacturing/R&D/office/warehouse on 13.1 acres in Oceanside, CA; base rent at fair market value based on construction cost.
- Termination effective Aug 31, 2023 unless landlord achieves milestone by then; no further rights or obligations after.
- Company states termination will not impact ability to successfully commercialize its medicines.

## SEC filing metadata
- accession: 0001140361-23-038087
- form_type: 8-K
- ticker: IONS
- cik: 0000874015
- company_name: IONIS PHARMACEUTICALS INC
- filed_at: 2023-08-04T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/874015/000114036123038087/0001140361-23-038087-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/874015/000114036123038087/brhc20056999_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-23-038087
- JSON: https://secwatch.observer/filing/0001140361-23-038087.json
- Plain text: https://secwatch.observer/filing/0001140361-23-038087.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.