Trade Summary

5 days ago, Klein Joseph III, serving as Dir at Ionis Pharmaceuticals Inc (IONS), sold 10,111 shares at $73.51 per share, for a total transaction value of $743,238.00. Following this transaction, Klein Joseph III now holds 11,114 shares of IONS.

This sale represents a 48.00% decrease in Klein Joseph III's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Friday, May 1, 2026 and publicly disclosed via SEC Form 4 filing on Tuesday, May 5, 2026, 4 days after the trade was made.

Ionis Pharmaceuticals Inc operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.