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Ionis Pharmaceuticals Inc (IONS) Insider Trading

Total insider buys:
  • $25,659,000.00
Total insider sells:
  • $215,854,804.98
Most recent insider trade:
  • Sept. 12, 2025
Most active insider trader:
  • Stanley T Crooke
Trader NameDateTitleAmountPriceTypeTotal Value
Feb. 13, 2019Chairman46,904$60.09Sell$2,818,461.36
Feb. 13, 2019SVP999$60.00Sell$59,940.00
Feb. 5, 2019SVP19,600$59.25Sell$1,161,300.00
Feb. 1, 2019SVP9,013$58.29Sell$525,367.77
Jan. 3, 2019SVP4,400$54.80Sell$241,120.00
Jan. 2, 2019COO214$53.50Sell$11,449.00
Dec. 19, 2018SVP4,063$52.03Sell$211,397.89
Nov. 23, 2018COO34,000$55.00Sell$1,870,000.00
Nov. 1, 2018SVP12,500$49.54Sell$619,250.00
Aug. 27, 2018COO16,493$54.00Sell$890,622.00
Aug. 8, 2018SVP12,500$45.00Sell$562,500.00
July 24, 2018COO156$47.03Sell$7,336.68
June 25, 2018Director15,000$42.30Sell$634,500.00
May 31, 2018Director15,000$46.45Sell$696,750.00
May 11, 2018SVP12,500$45.00Sell$562,500.00
May 11, 2018Director15,000$45.31Sell$679,650.00
April 17, 2018Chairman13,962$44.40Sell$619,912.80
March 29, 2018Director2,000$46.15Sell$92,300.00
March 15, 2018Director2,000$51.13Sell$102,260.00
March 12, 2018SVP1,000$55.00Sell$55,000.00
Feb. 28, 2018Director3,000$51.91Sell$155,730.00
Feb. 15, 2018Director3,000$48.99Sell$146,970.00
Feb. 1, 2018SVP12,500$52.50Sell$656,250.00
Jan. 30, 2018Director3,000$52.86Sell$158,580.00
Jan. 29, 2018SVP355$55.00Sell$19,525.00
Jan. 29, 2018Chairman11,000$54.12Sell$595,320.00
Jan. 25, 2018SVP645$55.00Sell$35,475.00
Jan. 16, 2018CFO2,724$51.76Sell$140,994.24
Jan. 16, 2018Insider2,196$51.76Sell$113,664.96
Jan. 16, 2018SVP2,696$51.76Sell$139,544.96
Jan. 16, 2018COO2,821$51.76Sell$146,014.96
Jan. 16, 2018Director5,986$51.76Sell$309,835.36
Jan. 15, 2018Chairman16,549$51.76Sell$856,576.24
Jan. 8, 2018Chairman11,000$52.01Sell$572,110.00
Jan. 3, 2018Chairman22,000$50.01Sell$1,100,220.00
Jan. 2, 2018SVP163$50.00Sell$8,150.00
Dec. 29, 2017Director3,000$50.56Sell$151,680.00
Dec. 29, 2017Director3,000$50.56Sell$151,680.00
Dec. 15, 2017SVP5,000$52.55Sell$262,750.00
Dec. 15, 2017Director3,000$51.69Sell$155,070.00
Dec. 4, 2017SVP4,000$57.00Sell$228,000.00
Dec. 1, 2017SVP1,000$55.50Sell$55,500.00
Nov. 30, 2017Director3,000$53.55Sell$160,650.00
Nov. 29, 2017SVP6,000$53.02Sell$318,120.00
Nov. 16, 2017SVP7,000$54.35Sell$380,450.00
Nov. 15, 2017Director2,250$53.56Sell$120,510.00
Nov. 13, 2017Director3,000$55.39Sell$166,170.00
Nov. 1, 2017SVP1,000$58.35Sell$58,350.00
Oct. 18, 2017COO16,118$65.00Sell$1,047,670.00
Oct. 18, 2017SVP12,250$65.00Sell$796,250.00
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  • Insiders are both buying and selling Ionis Pharmaceuticals Inc stock.

  • The insider traders at Ionis Pharmaceuticals Inc are: Stanley T Crooke, Patrick R O'neil, Brett P Monia, B Lynne Parshall, C Frank Bennett, Joseph Klein III, Elizabeth L Hougen, Richard S Geary, Eric Swayze, Frederick T Muto, Joseph H Wender, Stanley Crooke, Stanley T. Crooke, Spencer R Berthelsen, Sarah Boyce, Eugene Schneider, Joseph Wender, Brett Monia, Brian Birchler, Patrick R. O'neil, Richard Geary, Michael R Hayden, Allene M Diaz, Ionis Pharmaceuticals Inc, Elizabeth L. Hougen, Onaiza Cadoret-Manier, Brett P. Monia, Shannon L Devers, Breaux Castleman, and Joseph Baroldi

  • The most active insider trader at Ionis Pharmaceuticals Inc is Stanley T Crooke with 63 trades.

  • Stanley T Crooke has sold the most Ionis Pharmaceuticals Inc stock with a total value of $66,110,239.88.

  • Ionis Pharmaceuticals Inc has bought the most Ionis Pharmaceuticals Inc stock with a total value of $50,000,000.00.

  • The most recent insider trade for Ionis Pharmaceuticals Inc was on Sept. 12, 2025.

  • The single biggest insider buy for Ionis Pharmaceuticals Inc was from Ionis Pharmaceuticals Inc with a total value of $25,000,000.00 on July 19, 2017.

  • The single biggest insider sell for Ionis Pharmaceuticals Inc was from Brett P Monia with a total value of $12,294,060.48 on Sept. 3, 2025.