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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
Oct. 13, 2017Chairman16,500$59.46Sell$981,090.00
Oct. 13, 2017SVP8,268$60.00Sell$496,080.00
Oct. 5, 2017SVP1,000$55.00Sell$55,000.00
Oct. 4, 2017Chairman27,500$52.89Sell$1,454,475.00
Oct. 2, 2017CEO15,000$52.00Sell$780,000.00
Sept. 6, 2017SVP1,000$55.00Sell$55,000.00
July 24, 2017SVP10,000$59.29Sell$592,900.00
July 20, 2017Chairman11,000$55.35Sell$608,850.00
July 19, 2017Major Shareholder3,125,000$8.00Buy$25,000,000.00
July 17, 2017Chairman16,500$52.45Sell$865,425.00
July 3, 2017SVP309$51.35Sell$15,867.15
July 3, 2017Chairman16,500$52.10Sell$859,650.00
June 1, 2017SVP70$48.00Sell$3,360.00
May 1, 2017SVP650$48.75Sell$31,687.50
April 25, 2017Chairman16,500$47.81Sell$788,865.00
April 24, 2017SVP500$45.00Sell$22,500.00
April 19, 2017Chairman5,500$43.25Sell$237,875.00
April 13, 2017Chairman22,000$40.69Sell$895,180.00
April 12, 2017SVP1,000$40.07Sell$40,070.00
March 3, 2017SVP5,000$55.00Sell$275,000.00
March 1, 2017SVP1,500$49.29Sell$73,935.00
March 1, 2017COO4,625$49.26Sell$227,827.50
Feb. 6, 2017SVP1,500$46.17Sell$69,255.00
Jan. 17, 2017Insider1,361$46.29Sell$63,000.69
Jan. 17, 2017COO7,246$46.29Sell$335,417.34
Jan. 17, 2017SVP2,502$46.29Sell$115,817.58
Jan. 17, 2017CFO2,273$46.29Sell$105,217.17
Jan. 17, 2017CEO15,382$46.29Sell$712,032.78
Jan. 10, 2017Chairman13,200$49.25Sell$650,100.00
Jan. 4, 2017Chairman18,700$48.89Sell$914,243.00
Jan. 3, 2017SVP309$48.60Sell$15,017.40
Dec. 20, 2016SVP130$52.48Sell$6,822.40
Dec. 15, 2016COO4,000$50.00Sell$200,000.00
Dec. 5, 2016CFO2,500$46.05Sell$115,125.00
Dec. 5, 2016SVP350$45.00Sell$15,750.00
Dec. 1, 2016COO12,500$42.23Sell$527,875.00
Nov. 14, 2016SVP1,000$45.00Sell$45,000.00
Nov. 11, 2016SVP5,000$39.75Sell$198,750.00
Nov. 7, 2016SVP5,000$34.00Sell$170,000.00
Oct. 5, 2016Chairman11,000$36.61Sell$402,710.00
Sept. 27, 2016Chairman22,000$36.02Sell$792,440.00
Sept. 21, 2016Chairman22,000$35.50Sell$781,000.00
Sept. 1, 2016COO12,500$29.88Sell$373,500.00
May 31, 2016Director12,500$22.31Sell$278,875.00
April 6, 2016SVP1,000$45.00Sell$45,000.00
April 6, 2016CEO11,000$46.13Sell$507,430.00
March 31, 2016CEO11,000$40.74Sell$448,140.00
March 23, 2016SVP1,000$45.40Sell$45,400.00
Jan. 19, 2016CEO13,401$41.46Sell$555,605.46
Jan. 19, 2016COO5,192$41.46Sell$215,260.32
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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.