IONS insider buying – Ionis Pharmaceuticals Inc
4 insider purchases since 2016 worth $1.9M by 1 different insiders. Last 12 months: 2 purchases, $1.2M. Most recent filing: 2026-11-13.
Large company Public float $5.3B (latest 10-K, SEC).
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Hayden Michael R Director | $1.9M 4× · 45,000 sh | 2024-12-23 2026-11-10 | – | 78,298 shares as of 2026-07-31 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 2 | $1.2M | 1 | 58 | $112.9M |
| 2025 | 1 | $477,900 | 1 | 59 | $81.1M |
| 2024 | 1 | $181,075 | 1 | 30 | $11.6M |
| 2023 | 0 | – | – | 38 | $21.1M |
| 2022 | 0 | – | – | 2 | $323,065 |
| 2021 | 0 | – | – | 6 | $8.0M |
| 2020 | 0 | – | – | 27 | $22.4M |
| 2019 | 0 | – | – | 32 | $37.4M |
| 2018 | 0 | – | – | 26 | $10.0M |
| 2017 | 0 | – | – | 40 | $16.7M |
| 2016 | 0 | – | – | 25 | $9.3M |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-11-13 | Hayden Michael R | Director | 5,000 | $29.64 | $148,200 | +23% | SEC |
| 2026-07-31 | Hayden Michael R | Director | 20,000 | $52.94 | $1.1M | +500.0% | SEC |
| 2025-05-02 | Hayden Michael R | Director | 15,000 | $31.86 | $477,900 | +42.6% | SEC |
| 2024-12-26 | Hayden Michael R | Director | 5,000 | $36.22 | $181,075 | +16.5% | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-09 | Diaz Allene M. | Director | 10,111 | $85.42 | $863,682 | Pre-planned (10b5-1) | SEC |
| 2026-07-09 | BENNETT C FRANK | Officer | 20,536 | $84.95 | $1.7M | Pre-planned (10b5-1) | SEC |
| 2026-07-06 | KLEIN JOSEPH III | Director | 11,518 | $79.04 | $910,423 | Pre-planned (10b5-1) | SEC |
| 2026-06-30 | Schneider Eugene | Officer | 26,000 | $81.05 | $2.1M | Pre-planned (10b5-1) | SEC |
| 2026-06-30 | O'NEIL PATRICK R. | Officer | 3,069 | $80.00 | $245,520 | Pre-planned (10b5-1) | SEC |
| 2026-06-30 | Baroldi Joseph | Officer | 5,635 | $80.16 | $451,702 | Pre-planned (10b5-1) | SEC |
| 2026-06-26 | Swayze Eric | Officer | 10,602 | $79.18 | $839,466 | Pre-planned (10b5-1) | SEC |
| 2026-06-26 | Monia Brett P | CEO | 85,637 | $79.70 | $6.8M | Pre-planned (10b5-1) | SEC |
| 2026-06-16 | BERTHELSEN SPENCER R | Director | 8,000 | $73.49 | $587,920 | Pre-planned (10b5-1) | SEC |
| 2026-06-16 | Kordasiewicz Holly B. | Officer | 60,846 | $73.40 | $4.5M | Pre-planned (10b5-1) | SEC |
| 2026-06-03 | BERTHELSEN SPENCER R | Director | 8,000 | $75.67 | $605,360 | Pre-planned (10b5-1) | SEC |
| 2026-05-15 | Monia Brett P | CEO | 4,536 | $78.49 | $356,011 | Pre-planned (10b5-1) | SEC |
| 2026-05-06 | LOSCALZO JOSEPH | Director | 77,289 | $75.06 | $5.8M | Pre-planned (10b5-1) | SEC |
| 2026-05-05 | KLEIN JOSEPH III | Director | 10,111 | $73.51 | $743,216 | Pre-planned (10b5-1) | SEC |
| 2026-04-30 | Baroldi Joseph | Officer | 1,626 | $71.79 | $116,731 | Pre-planned (10b5-1) | SEC |
Showing the latest 15 of 343 sales of $50,000+ since 2016.
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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