IONIS PHARMACEUTICALS INC insider trading
IONS$43.54-0.46 (-1.05%)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-36.3%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26
Unlock quarterly net flowKey players
- BPBrett P. Monia0.1461%
- SRSpencer R. Berthelsen0.0971%
- BBBrian Birchler0.0619%
- ELElizabeth L. Hougen0.0497%
- MRMichael R. Hayden0.0471%
- ESEugene Schneider0.0464%
- CFC. Frank Bennett0.0362%
- RSRichard S. Geary0.0359%
- PRPatrick R. O'Neil0.0356%
- JBJoseph Baroldi0.032%
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| IONS | Michael R. Hayden | Open market purchase$258K | +6.8% | $51.60 | $258K | Jul 31, 2026 | Jul 31, 2026 |
| IONS | Michael R. Hayden | Open market purchase$801K | +25.7% | $53.38 | $801K | Jul 30, 2026 | Jul 31, 2026 |
| IONS | C. Frank Bennett | Open market sell$1.28M | -16.7% | $85.46 | $1.28M | Jul 7, 2026 | Jul 9, 2026 |
| IONS | C. Frank Bennett | Open market sell$463K | -6.9% | $83.58 | $463K | Jul 7, 2026 | Jul 9, 2026 |
| IONS | Holly B. Kordasiewicz | Open market sell$30.5K | -1.6% | $84.30 | $30.5K | Jul 7, 2026 | Jul 9, 2026 |
| IONS | Patrick R. O'Neil | Open market sell$246K | -4.8% | $80.00 | $246K | Jun 26, 2026 | Jun 30, 2026 |
| IONS | Eric Swayze | Open market sell$839K | -32.4% | $79.18 | $839K | Jun 25, 2026 | Jun 26, 2026 |
| IONS | Joseph Baroldi | Open market sell$117K | -3.2% | $71.79 | $117K | Apr 28, 2026 | Apr 30, 2026 |
| IONS | Kyle Jenne | Open market sell$368K | -17.1% | $75.17 | $368K | Apr 16, 2026 | Apr 17, 2026 |
| IONS | Brian Birchler | Open market sell$73K | -1.4% | $75.04 | $73K | Apr 16, 2026 | Apr 17, 2026 |
| IONS | Joseph Baroldi | Open market sell$419K | -9.9% | $74.56 | $419K | Apr 16, 2026 | Apr 17, 2026 |
| IONS | B. Lynne Parshall | Open market sell$41.1K | -1.0% | $76.97 | $41.1K | Apr 15, 2026 | Apr 17, 2026 |
| IONS | B. Lynne Parshall | Open market sell$340K | -7.9% | $76.19 | $340K | Apr 15, 2026 | Apr 17, 2026 |
| IONS | Shannon L. Devers | Open market sell$459K | -27.5% | $74.05 | $459K | Apr 2, 2026 | Apr 2, 2026 |
| IONS | Eugene Schneider | Open market sell$412K | -8.3% | $70.97 | $412K | Mar 19, 2026 | Mar 23, 2026 |
| IONS | Elizabeth L. Hougen | Open market sell$745K | -11.0% | $73.21 | $745K | Mar 17, 2026 | Mar 18, 2026 |
| IONS | Patrick R. O'Neil | Open market sell$764K | -14.0% | $75.25 | $764K | Mar 9, 2026 | Mar 11, 2026 |
| IONS | Eric Swayze | Open market sell$509K | -16.1% | $82.07 | $509K | Feb 13, 2026 | Feb 13, 2026 |
| IONS | Eric Swayze | Open market sell$770K | -19.6% | $81.56 | $770K | Feb 13, 2026 | Feb 13, 2026 |
| IONS | B. Lynne Parshall | Open market sell$414K | -8.2% | $82.72 | $414K | Feb 11, 2026 | Feb 13, 2026 |
| IONS | Brett P. Monia | Open market sell$2.52M | -10.4% | $85.79 | $2.52M | Feb 6, 2026 | Feb 10, 2026 |
| IONS | Eric Swayze | Open market sell$512K | -11.4% | $82.93 | $512K | Jan 30, 2026 | Feb 2, 2026 |
| IONS | Eugene Schneider | Open market sell$516K | -8.1% | $83.45 | $516K | Jan 30, 2026 | Feb 2, 2026 |
| IONS | Patrick R. O'Neil | Open market sell$516K | -7.9% | $83.53 | $516K | Jan 30, 2026 | Feb 2, 2026 |
| IONS | Brett P. Monia | Open market sell$5.21M | -18.2% | $82.72 | $5.21M | Jan 30, 2026 | Feb 2, 2026 |
| IONS | Elizabeth L. Hougen | Open market sell$582K | -5.0% | $83.24 | $582K | Jan 30, 2026 | Feb 2, 2026 |
| IONS | Brian Birchler | Open market sell$513K | -8.5% | $83.03 | $513K | Jan 30, 2026 | Feb 2, 2026 |
| IONS | C. Frank Bennett | Open market sell$488K | -5.5% | $82.95 | $488K | Jan 30, 2026 | Feb 2, 2026 |
| IONS | Joseph Baroldi | Open market sell$439K | -9.6% | $82.96 | $439K | Jan 30, 2026 | Feb 2, 2026 |
| IONS | Shannon L. Devers | Open market sell$323K | -15.0% | $81.34 | $323K | Jan 22, 2026 | Jan 23, 2026 |
| IONS | Eric Swayze | Open market sell$3.72K | -0.1% | $75.97 | $3.72K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Eric Swayze | Open market sell$745K | -19.0% | $75.34 | $745K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Eugene Schneider | Open market sell$703K | -12.7% | $75.59 | $703K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Patrick R. O'Neil | Open market sell$697K | -12.2% | $75.84 | $697K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Brett P. Monia | Open market sell$3.29M | -16.4% | $74.82 | $3.29M | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Holly B. Kordasiewicz | Open market sell$313K | -22.0% | $75.66 | $313K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Kyle Jenne | Open market sell$138K | -10.0% | $75.96 | $138K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Elizabeth L. Hougen | Open market sell$972K | -9.3% | $75.22 | $972K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Shannon L. Devers | Open market sell$634K | -24.0% | $75.95 | $634K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Brian Birchler | Open market sell$637K | -12.3% | $75.11 | $637K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | C. Frank Bennett | Open market sell$675K | -8.7% | $75.15 | $675K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Joseph Baroldi | Open market sell$87.1K | -2.5% | $75.78 | $87.1K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Joseph Baroldi | Open market sell$523K | -13.3% | $75.75 | $523K | Jan 16, 2026 | Jan 20, 2026 |
| IONS | Joseph H. Wender | Open market sell$603K | -12.5% | $81.23 | $603K | Dec 1, 2025 | Dec 3, 2025 |
| IONS | Joseph H. Wender | Open market sell$1.66M | -25.7% | $80.67 | $1.66M | Dec 1, 2025 | Dec 3, 2025 |
| IONS | Brian Birchler | Open market sell$609K | -14.1% | $76.17 | $609K | Nov 6, 2025 | Nov 7, 2025 |
| IONS | Joseph H. Wender | Open market sell$842K | -14.9% | $75.16 | $842K | Oct 31, 2025 | Nov 3, 2025 |
| IONS | Joseph H. Wender | Open market sell$441K | -7.4% | $73.85 | $441K | Oct 30, 2025 | Nov 3, 2025 |
| IONS | Joseph H. Wender | Open market sell$610K | -9.3% | $73.16 | $610K | Oct 30, 2025 | Nov 3, 2025 |
| IONS | Joseph H. Wender | Open market sell$179K | -2.7% | $72.19 | $179K | Oct 30, 2025 | Nov 3, 2025 |