// company-profile
Ionis Pharmaceuticals Inc
IONS// activity-summary
Recent insider activity is bullish. Over the last 30 days, 14 insiders purchased shares (net $3.7M). Buying was led by Kordasiewicz Holly B..
// 90-day insight
Over the last 90 days, Ionis Pharmaceuticals Inc insiders bought $8.1M (35 transactions) and sold $860K (3 transactions).
- Most active insider: LOSCALZO JOSEPH with 14 transactions totaling $9.6M.
- Largest single sale: $4.5M by LOSCALZO JOSEPH on May 4, 2026.
- 80% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Ionis Pharmaceuticals Inc as of 2026-03-31
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 15, 2026 | BERTHELSEN SPENCER R | IONS | Option Exercise | 8,000 | $0.00 | $0K |
| Jun 15, 2026 | BERTHELSEN SPENCER R | IONS | Option Exercise | 8,000 | $24.42 | $195K |
| Jun 15, 2026 | BERTHELSEN SPENCER R | IONS | Sale10b5 | 8,000 | $73.49 | $588K |
| Jun 12, 2026 | Kordasiewicz Holly B. | IONS | Option Exercise | 19,895 | $56.78 | $1.13M |
| Jun 12, 2026 | Kordasiewicz Holly B. | IONS | Option Exercise | 21,000 | $0.00 | $0K |
45 more transactions hidden
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