Ionis Pharmaceuticals's three largest insider shareholders as of April 17, 2026 are Brett P Monia (Chief Executive Officer, 242.66K shares), Spencer R Berthelsen (Director, 156.01K shares), Elizabeth L Hougen (Evp, Finance Cfo, 82.66K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Brett P Monia | Chief Executive Officer | 242,662 | 0 | 11 Mar, 2026 |
| Spencer R Berthelsen | - | 156,013 | 0 | 17 Jul, 2025 |
| Elizabeth L Hougen | Evp, Finance Cfo | 82,660 | 0 | 18 Mar, 2026 |
| C Frank Bennett | Evp, Chief Scientific Officer | 80,554 | 0 | 05 Mar, 2026 |
| Brian Birchler | Evp, Corp And Development Ops | 66,598 | 0 | 03 Mar, 2026 |
| Eugene Schneider | Evp, Chf Clinical Develop Ofcr | 63,890 | 0 | 23 Mar, 2026 |
| Patrick R. O'Neil | Evp Clo General Counsel | 62,211 | 0 | 11 Mar, 2026 |
| Richard S Geary | Evp, Chief Development Officer | 59,657 | 0 | 07 Nov, 2025 |
| Frederick T Muto | - | 59,597 | 0 | 18 Jul, 2022 |
| B Lynne Parshall | Coo | 56,344 | 0 | 12 Feb, 2026 |
| Michael R Hayden | - | 54,298 | 0 | 17 Jul, 2025 |
| Joan E Herman | - | 46,086 | 0 | 20 Nov, 2025 |
| Joseph Baroldi | Evp, Chief Business Officer | 41,317 | 4,347 | 05 Mar, 2026 |
| Joseph H Wender | - | 0 | 36,035 | 03 Dec, 2025 |
| Onaiza Cadoret-Manier | Evp, Chf Gl Pdt Str Oper Ofc | 35,825 | 0 | 02 Feb, 2024 |
| Eric Swayze | Evp Research | 32,361 | 0 | 03 Mar, 2026 |
| Kyle Jenne | Evp, Chf Gl Pdt Str Ofcr | 16,389 | 0 | 11 Mar, 2026 |
| Shannon L. Devers | Evp, Chief Human Resources Ofc | 16,348 | 0 | 02 Apr, 2026 |
| Joseph H Wender | - | 16,000 | 0 | 19 Nov, 2025 |
| Holly B. Kordasiewicz | Evp, Chief Development Officer | 14,718 | 0 | 20 Jan, 2026 |
| Peter N Reikes | - | 14,222 | 0 | 19 Oct, 2021 |
| Michael J. Yang | - | 7,940 | 0 | 20 Jan, 2026 |
| Allene M. Diaz | - | 3,811 | 0 | 05 Mar, 2026 |
| Eric Swayze | Evp Research | 0 | 318 | 20 Jan, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Apr, 2026 | Shannon L. Devers | Common Stock | D | 6,193 | $74.05 | 16,348 | D | S |
| 19 Mar, 2026 | Eugene Schneider | Common Stock | D | 5,812 | $70.97 | 63,890 | D | S |
| 16 Mar, 2026 | Elizabeth L Hougen | Common Stock | A | 60,299 | $60.89 | 193,180 | D | M |
| 16 Mar, 2026 | Elizabeth L Hougen | Common Stock | A | 61,041 | $56.78 | 254,221 | D | M |
| 16 Mar, 2026 | Elizabeth L Hougen | Common Stock | A | 33,118 | $32.60 | 287,339 | D | M |
| 16 Mar, 2026 | Elizabeth L Hougen | Common Stock | A | 20,541 | $37.58 | 307,880 | D | M |
| 16 Mar, 2026 | Elizabeth L Hougen | Common Stock | D | 205,608 | $72.38 | 102,272 | D | S |
| 16 Mar, 2026 | Elizabeth L Hougen | Common Stock | D | 9,440 | $72.77 | 92,832 | D | S |
| 17 Mar, 2026 | Elizabeth L Hougen | Common Stock | D | 10,172 | $73.21 | 82,660 | D | S |
| 16 Mar, 2026 | Elizabeth L Hougen | Non-Qualified Stock Option (right to buy) | D | 33,118 | $0.00 | 0 | D | M |
| 16 Mar, 2026 | Elizabeth L Hougen | Non-Qualified Stock Option (right to buy) | D | 20,541 | $0.00 | 5,405 | D | M |
| 16 Mar, 2026 | Elizabeth L Hougen | Non-Qualified Stock Option (right to buy) | D | 61,041 | $0.00 | 0 | D | M |
| 16 Mar, 2026 | Elizabeth L Hougen | Non-Qualified Stock Option (right to buy) | D | 60,299 | $0.00 | 0 | D | M |
| 10 Mar, 2026 | Kyle Jenne | Common Stock | A | 32,602 | $46.10 | 48,991 | D | M |
| 09 Mar, 2026 | Brett P Monia | Common Stock | A | 40,822 | $60.89 | 295,803 | D | M |
| 09 Mar, 2026 | Patrick R. O'Neil | Common Stock | D | 10,148 | $75.25 | 62,211 | D | S |
| 09 Mar, 2026 | Brett P Monia | Common Stock | A | 73,529 | $60.89 | 369,332 | D | M |
| 10 Mar, 2026 | Kyle Jenne | Common Stock | D | 21,191 | $75.50 | 27,800 | D | S |
| 09 Mar, 2026 | Brett P Monia | Common Stock | D | 7,382 | $74.11 | 361,950 | D | S |
| 10 Mar, 2026 | Kyle Jenne | Common Stock | D | 16,086 | $76.30 | 11,714 | D | S |