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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
Jan. 17, 2024CFO8,683$50.42Sell$437,796.86
Jan. 17, 2024CEO32,059$50.42Sell$1,616,414.78
Jan. 12, 2024EVP8,000$53.50Sell$428,000.00
Dec. 28, 2023Director42,525$50.19Sell$2,134,329.75
Dec. 26, 2023EVP20,825$51.46Sell$1,071,654.50
Dec. 26, 2023Director25,113$51.46Sell$1,292,314.98
Dec. 21, 2023CEO17,500$49.29Sell$862,575.00
Dec. 20, 2023EVP6,500$49.64Sell$322,660.00
Dec. 14, 2023CEO24,000$49.58Sell$1,189,920.00
Nov. 15, 2023Director2,000$50.00Sell$100,000.00
Oct. 17, 2023EVP52$47.95Sell$2,493.40
Oct. 12, 2023CEO3,770$46.00Sell$173,420.00
Sept. 28, 2023EVP4,460$46.50Sell$207,390.00
Sept. 26, 2023Director10,000$45.13Sell$451,300.00
Aug. 1, 2023Director657$41.05Sell$26,969.85
July 18, 2023Director3,555$42.00Sell$149,310.00
July 7, 2023CEO18,650$42.25Sell$787,962.50
May 24, 2023EVP1,527$41.70Sell$63,675.90
May 22, 2023CEO4,931$40.14Sell$197,930.34
April 18, 2023EVP672$36.50Sell$24,528.00
Feb. 6, 2023EVP1,815$40.79Sell$74,033.85
Feb. 6, 2023CFO2,079$40.59Sell$84,386.61
Feb. 6, 2023CEO24,651$40.69Sell$1,003,049.19
Jan. 30, 2023EVP4,500$39.42Sell$177,390.00
Jan. 18, 2023EVP5,631$39.74Sell$223,775.94
Jan. 18, 2023CFO8,280$39.70Sell$328,716.00
Jan. 18, 2023CEO25,066$39.49Sell$989,856.34
Jan. 17, 2023Director2,000$40.00Sell$80,000.00
Sept. 8, 2022EVP460$44.55Sell$20,493.00
July 15, 2022Director1,333$38.24Sell$50,973.92
April 21, 2022EVP378$44.15Sell$16,688.70
April 12, 2022EVP6,792$40.06Sell$272,087.52
April 1, 2022CEO355$37.49Sell$13,308.95
July 15, 2021Director4,334$35.30Sell$152,990.20
June 23, 2021Director15,000$37.74Sell$566,100.00
June 15, 2021Director15,000$36.63Sell$549,450.00
March 1, 2021CEO236$54.28Sell$12,810.08
Jan. 26, 2021Chairman28,333$63.74Sell$1,805,945.42
Jan. 25, 2021EVP5,324$63.50Sell$338,074.00
Jan. 21, 2021Chairman35,000$61.20Sell$2,142,000.00
Jan. 13, 2021EVP141$59.50Sell$8,389.50
Jan. 5, 2021EVP195$55.99Sell$10,918.05
Dec. 23, 2020Director10,000$60.00Sell$600,000.00
Dec. 17, 2020Chairman1,407$50.50Sell$71,053.50
Dec. 15, 2020Chairman39,000$49.78Sell$1,941,420.00
Dec. 7, 2020Chairman11,000$51.67Sell$568,370.00
Dec. 4, 2020CEO23,840$51.04Sell$1,216,793.60
Dec. 4, 2020Insider7,947$51.04Sell$405,614.88
Dec. 2, 2020Insider7,053$51.32Sell$361,959.96
Dec. 2, 2020CEO21,160$51.32Sell$1,085,931.20
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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.