IONS insider trading — Ionis Pharmaceuticals Inc
Over the last 90 days, insiders at Ionis Pharmaceuticals Inc (IONS) made 2 open-market purchases worth $1.06M and 0 open-market sales worth $0, making them net buyers by $1.06M. The largest purchase was by Hayden Michael R (Director), who bought 15,000 shares for $801K on Jul 30, 2026.
Updated Oct 16, 2026.
Recent IONS insider transactions
Every Form 4 filed by Ionis Pharmaceuticals Inc officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Aug 31, 2026 | Bennett C Frank | EVP, Chief Scientific Officer | J · Other | Direct | 110 | $51.31 | $6K | Form 4 |
| Aug 31, 2026 | Monia Brett P | Chief Executive Officer | J · Other | Direct | 98 | $51.31 | $5K | Form 4 |
| Aug 31, 2026 | O'Neil Patrick R. | EVP CLO & General Counsel | J · Other | Direct | 63 | $51.31 | $3K | Form 4 |
| Aug 31, 2026 | Birchler Brian | EVP, Corp and Development Ops | J · Other | Direct | 58 | $51.31 | $3K | Form 4 |
| Jul 31, 2026 | Hayden Michael R | Director | P · Purchase | Indirect | 5,000 | $51.60 | $258K | Form 4 |
| Jul 30, 2026 | Hayden Michael R | Director | P · Purchase | Indirect | 15,000 | $53.38 | $801K | Form 4 |
IONS insider trading FAQ
Are insiders buying IONS stock?
Yes. In the last 90 days, Ionis Pharmaceuticals Inc insiders made 2 open-market purchases totaling $1.06M, and no open-market sales. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading IONS?
Recent buyers: Hayden Michael R.
Where does IONS insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.