Over the 90-day window ending February 07, 2026, Ionis Pharmaceuticals's three dominant insider ownership positions are held by Chief Executive Officer Brett P Monia (283.93K shares), Director Spencer R Berthelsen (156.01K shares), Evp And Finance & Cfo Elizabeth L Hougen (132.88K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Brett P Monia | Chief Executive Officer | 283,927 | 02 Feb, 2026 |
| Spencer R Berthelsen | 156,013 | 17 Jul, 2025 | |
| Elizabeth L Hougen | Evp And Finance & Cfo | 132,881 | 02 Feb, 2026 |
| C Frank Bennett | Evp And Chief Scientific Officer | 80,293 | 04 Feb, 2026 |
| Patrick R. O'Neil | Evp Clo & General Counsel | 71,983 | 02 Feb, 2026 |
| Eugene Schneider | Evp And Chf Clinical Develop Ofcr | 69,702 | 02 Feb, 2026 |
| Brian Birchler | Evp And Corp And Development Ops | 66,247 | 02 Feb, 2026 |
| B Lynne Parshall | 61,344 | 16 Oct, 2025 | |
| Richard S Geary | Evp And Chief Development Officer | 59,657 | 07 Nov, 2025 |
| Frederick T Muto | 59,597 | 19 Jul, 2022 | |
| Michael R Hayden | 54,298 | 17 Jul, 2025 | |
| Joseph H Wender | 52,035 | 20 Nov, 2025 | |
| Joseph Baroldi | Evp And Chief Business Officer | 50,185 | 02 Feb, 2026 |
| Eric Swayze | Evp Research | 48,065 | 02 Feb, 2026 |
| Joan E Herman | 46,086 | 20 Nov, 2025 | |
| Joseph Loscalzo | 36,330 | 03 Nov, 2025 | |
| Onaiza Cadoret-Manier | Evp And Chf Gl Pdt Str & Oper Ofc | 35,825 | 02 Feb, 2024 |
| Shannon L. Devers | Evp And Chief Human Resources Ofc | 22,541 | 23 Jan, 2026 |
| Allene M. Diaz | 18,368 | 26 Aug, 2025 | |
| Kyle Jenne | Evp And Chf Gl Pdt Str Ofcr | 16,389 | 20 Jan, 2026 |
| Joseph Iii Klein | 16,346 | 17 Nov, 2023 | |
| Holly B. Kordasiewicz | Evp And Chief Development Officer | 14,718 | 20 Jan, 2026 |
| Peter N Reikes | 14,222 | 19 Oct, 2021 | |
| Michael J. Yang | 7,940 | 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 Feb, 2026 | C Frank Bennett | Common Stock | D | 48,626 | $83.03 | 80,293 | D | S |
| 02 Feb, 2026 | C Frank Bennett | Common Stock | A | 16,463 | $32.60 | 96,756 | D | M |
| 02 Feb, 2026 | C Frank Bennett | Common Stock | D | 16,463 | $83.03 | 80,293 | D | S |
| 02 Feb, 2026 | C Frank Bennett | Common Stock | D | 20,000 | $82.60 | 80,293 | D | S |
| 02 Feb, 2026 | C Frank Bennett | Common Stock | A | 48,626 | $60.89 | 128,919 | D | M |
| 30 Jan, 2026 | C Frank Bennett | Common Stock | D | 5,885 | $82.95 | 100,293 | D | S |
| 30 Jan, 2026 | Elizabeth L Hougen | Common Stock | D | 6,988 | $83.24 | 132,881 | D | S |
| 30 Jan, 2026 | Brett P Monia | Common Stock | D | 62,970 | $82.72 | 283,927 | D | S |
| 30 Jan, 2026 | Patrick R. O'Neil | Common Stock | D | 6,179 | $83.53 | 71,983 | D | S |
| 30 Jan, 2026 | Eric Swayze | Common Stock | D | 6,179 | $82.93 | 47,747 | D | S |
| 30 Jan, 2026 | Joseph Baroldi | Common Stock | D | 5,296 | $82.96 | 45,413 | D | S |
| 30 Jan, 2026 | Eugene Schneider | Common Stock | D | 6,179 | $83.45 | 69,702 | D | S |
| 30 Jan, 2026 | Brian Birchler | Common Stock | D | 6,179 | $83.03 | 66,247 | D | S |
| 29 Jan, 2026 | C Frank Bennett | Common Stock | A | 11,421 | $0.00 | 106,178 | D | A |
| 29 Jan, 2026 | Elizabeth L Hougen | Common Stock | A | 13,562 | $0.00 | 139,869 | D | A |
| 29 Jan, 2026 | Brett P Monia | Common Stock | A | 122,214 | $0.00 | 346,897 | D | A |
| 29 Jan, 2026 | Patrick R. O'Neil | Common Stock | A | 11,991 | $0.00 | 78,162 | D | A |
| 29 Jan, 2026 | Eric Swayze | Common Stock | A | 11,991 | $0.00 | 53,926 | D | A |
| 29 Jan, 2026 | Joseph Baroldi | Common Stock | A | 10,278 | $0.00 | 50,709 | D | A |
| 29 Jan, 2026 | Eugene Schneider | Common Stock | A | 11,991 | $0.00 | 75,881 | D | A |