Sionna Therapeutics, Inc. Common Stock (SION) Insider Trading

Total insider buys:
  • $950,400.00
Total insider sells:
  • $4,226,402.36
Most recent insider trade:
  • Feb. 3, 2026
Most active insider trader:
  • Elena Ridloff
Trader NameDateTitleAmountPriceTypeTotal Value
Feb. 3, 2026Director29,063$44.58Sell$1,295,628.54
Feb. 3, 2026Director29,063$44.58Sell$1,295,628.54
Feb. 2, 2026Director1,890$44.57Sell$84,237.30
Feb. 2, 2026Director1,890$44.57Sell$84,237.30
Sept. 2, 2025CFO8,836$25.08Sell$221,606.88
Aug. 29, 2025CFO748$25.18Sell$18,834.64
Aug. 28, 2025CFO16,098$25.97Sell$418,065.06
Aug. 27, 2025CEO7,426$25.01Sell$185,724.26
Aug. 27, 2025CFO3,618$25.10Sell$90,811.80
Aug. 26, 2025CEO17,574$24.96Sell$438,647.04
Aug. 26, 2025CFO3,700$25.13Sell$92,981.00
June 27, 2025Major Shareholder60,000$15.84Buy$950,400.00
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  • Insiders are both buying and selling Sionna Therapeutics, Inc. Common Stock stock.

  • The insider traders at Sionna Therapeutics, Inc. Common Stock are: Elena Ridloff, Michael Cloonan, Orbimed Advisors Llc, Peter A Thompson, and Tpg Gp A, Llc

  • The most active insider trader at Sionna Therapeutics, Inc. Common Stock is Elena Ridloff with 5 trades.

  • Peter A Thompson has sold the most Sionna Therapeutics, Inc. Common Stock stock with a total value of $2,675,494.38.

  • Tpg Gp A, Llc has bought the most Sionna Therapeutics, Inc. Common Stock stock with a total value of $1,900,800.00.

  • The most recent insider trade for Sionna Therapeutics, Inc. Common Stock was on Feb. 3, 2026.

  • The single biggest insider buy for Sionna Therapeutics, Inc. Common Stock was from Tpg Gp A, Llc with a total value of $950,400.00 on June 27, 2025.

  • The single biggest insider sell for Sionna Therapeutics, Inc. Common Stock was from Peter A Thompson with a total value of $1,295,628.54 on Feb. 3, 2026.