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Home/Companies/Sionna Therapeutics, Inc.

Sionna Therapeutics, Inc.

255 insider trades tracked

SION
Insider trades
255
Bought (open market)
$63.4M
Sold (open market)
$174.6M
Unique insiders
17

12-month activity

Monthly insider buy vs sell totals for Sionna Therapeutics, Inc..

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$38.9M69
November 2025$0$16.3M42
December 2025$0$3.6M10
January 2026$0$10M6
February 2026$0$2.8M4
March 2026$0$347K2
April 2026$0$50.8M10
May 2026$0$26.7M8
June 2026$0$10.5M11
July 2026$0$8.2M4
August 2026$0$00
September 2026$0$014

Recent insider trades

Most recent Form 4 filings for Sionna Therapeutics, Inc..

  • Ridloff Elenatraded165,440 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Ridloff Elenagranted165,440 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Ridloff Elenagranted47,268 shares ofSIONat $0Sep 17 · filed Sep 18Details

Insiders at this company

Executives and directors who have filed Form 4s.

  • RA CAPITAL MANAGEMENT, L.P.61 trades
  • Booth Bruce59 trades
  • Cloonan Michael29 trades
  • Thompson Peter A.25 trades
  • ORBIMED ADVISORS LLC24 trades
  • Fitzpatrick Jennifer13 trades
  • Ridloff Elena13 trades
  • TPG GP A, LLC8 trades

Explore insider screeners

Latest CEO & CFO PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
  • Ridloff Elenagranted47,269 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Cloonan Michaeltraded436,100 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Cloonan Michaelgranted436,100 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Cloonan Michaelgranted109,025 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Fitzpatrick Jennifertraded103,140 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Fitzpatrick Jennifergranted103,140 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Fitzpatrick Jennifergranted28,132 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Fitzpatrick Jennifergranted28,133 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • McKee Charlottetraded155,700 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • McKee Charlottegranted155,700 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • McKee Charlottegranted50,000 shares ofSIONat $0Sep 17 · filed Sep 18Details
  • Thompson Peter A.sold85,918 shares ofSIONat $44.86$3.9MJul 7 · filed Jul 9Details
  • ORBIMED ADVISORS LLCsold85,918 shares ofSIONat $44.86$3.9MJul 7 · filed Jul 9Details
  • Fitzpatrick Jennifersold10,250 shares ofSIONat $43.596$447KJul 6 · filed Jul 7Details
  • Fitzpatrick Jenniferexercised10,250 shares ofSIONat $6.11$63KJul 6 · filed Jul 7Details
  • Thompson Peter A.sold115,844 shares ofSIONat $45.5$5.3MJun 30 · filed Jul 2Details
  • ORBIMED ADVISORS LLCsold115,844 shares ofSIONat $45.5$5.3MJun 30 · filed Jul 2Details
  • Ruddy Marcella K.granted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • Fleming Harold Edwardgranted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • Viney Joanne L.granted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • Resnick Joshuagranted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • Stelzer Lauriegranted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • Booth Brucegranted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • Clancy Paul Jgranted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • Thompson Peter A.granted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • RA CAPITAL MANAGEMENT, L.P.granted17,340 shares ofSIONat $0Jun 17 · filed Jun 18Details
  • Thompson Peter A.sold101 shares ofSIONat $44.49$4KMay 27 · filed May 29Details
  • View all trades for SION →
    Atlas Venture Fund XI, L.P.
    8 trades
  • McKee Charlotte5 trades
  • Viney Joanne L.2 trades
  • Ruddy Marcella K.2 trades
  • Beer Caroline Stark2 trades
  • Clancy Paul J1 trades
  • Stelzer Laurie1 trades
  • Resnick Joshua1 trades
  • Fleming Harold Edward1 trades