Over 12 months, Ionis Pharmaceuticals Inc saw more selling than buying from its insiders — purchases of about $1.1 million against sales of $136.8 million.
Hayden Michael R (Director) made the biggest buy, worth around $801,000.
On the institutional side, 513 funds reported holding IONS at the end of Q2 2026, and more funds bought than sold. Looking at the quarterly pattern: 5 quarters in a row of net selling by insiders. Insiders bought in 2 of the last 7 full quarters.
| Filed | Insider | Role | Type | Shares | Price | Value | Source |
|---|---|---|---|---|---|---|---|
| Jul 31, 2026 | Hayden Michael R | Director | Buy | 15,000 | $53.38 | $801K | SEC |
| Jul 31, 2026 | Hayden Michael R | Director | Buy | 5,000 | $51.60 | $258K | SEC |
| Jul 9, 2026 | BENNETT C FRANK | Executive Officer | Sell | 15,000 | $85.46 | $1.3M | SEC |
| Jul 9, 2026 | BENNETT C FRANK | Executive Officer | Sell | 5,536 | $83.58 | $463K | SEC |
| Jul 9, 2026 | Diaz Allene M. | Director | Sell | 10,111 | $85.42 | $864K | SEC |
| Jul 9, 2026 | Kordasiewicz Holly B. | Executive Officer | Sell | 362 | $84.30 | $31K | SEC |
| Jul 6, 2026 | KLEIN JOSEPH III | Director | Sell | 99 | $79.45 | $8K | SEC |
| Jul 6, 2026 | KLEIN JOSEPH III | Director | Sell | 11,419 | $79.04 | $903K | SEC |
| Jun 30, 2026 | Baroldi Joseph | Executive Officer | Sell | 5,635 | $80.16 | $452K | SEC |
| Jun 30, 2026 | O'NEIL PATRICK R. | Executive Officer | Sell | 3,069 | $80.00 | $246K | SEC |
| Jun 30, 2026 | Schneider Eugene | Executive Officer | Sell | 26,000 | $81.05 | $2.1M | SEC |
| Jun 26, 2026 | Monia Brett P | CEO | Sell | 21,072 | $78.49 | $1.7M | SEC |
| Jun 26, 2026 | Monia Brett P | CEO | Sell | 14,565 | $78.41 | $1.1M | SEC |
| Jun 26, 2026 | Monia Brett P | CEO | Sell | 50,000 | $80.59 | $4.0M | SEC |
| Jun 26, 2026 | Swayze Eric | Executive Officer | Sell | 10,602 | $79.18 | $839K | SEC |
In the last 12 months Ionis Pharmaceuticals Inc insiders made open-market purchases worth about $1.1 million and sales worth about $136.8 million. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
The most recent open-market insider trade in IONS was filed on 2026-07-31.
513 investment managers reported holding IONS in SEC Form 13F filings for Q2 2026.
No congressional trades in IONS were reported in the past two years. The full list is free on CapitalSnitch.
Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1). Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).