DATAROMA
  • Home
  • Commentaries/Articles
  • Superinvestors
  • Activity
  • S&P500 Grid
  • Grand Portfolio
  • RealTime
  • Insider

Sionna Therapeutics Inc (SION)

Sector:Health Care
Super Investor Stats:
Ownership count:2
Ownership rank:465
% of all portfolios:0.005%
Hold Price * :$41.14
Total insider Buys/Sells last 6 months:
TransactionsTotal
Buys 0 $0
Sells 79 $102,206,163
SION Chart by TradingView
  • Ownership
  • Activity
  • Buys
  • Sells
  • Insider
Portfolio Manager % of portfolio Recent activity Shares Value
≡ Viking Global Investors 0.35 3,195,181 131,450,000
≡ Polen Capital Management 0.01 31,258 1,286,000

Open Market Insider Buys

Date Filed Reporting Name Relationship Trans. Date Shares Price $ Total Value $
01 Jul 2025 TPG GP A, LLC 10% 27 Jun 2025 60,000 15.84 950,400
12 Feb 2025 TPG GP A, LLC 10% 10 Feb 2025 1,125,000 18.00 20,250,000
10 Feb 2025 RA CAPITAL MANAGEMENT, L.P. Director , 10% 10 Feb 2025 102,414 18.00 1,843,452
10 Feb 2025 RA CAPITAL MANAGEMENT, L.P. Director , 10% 10 Feb 2025 1,022,586 18.00 18,406,548
10 Feb 2025 THOMPSON PETER A. Director 10 Feb 2025 550,000 18.00 9,900,000
10 Feb 2025 BOOTH BRUCE Director 10 Feb 2025 60,000 18.00 1,080,000
SION Fundamental Data by TradingView

* "Hold Price" is the last known price at which an investor still held a security. It is the closing price of the security as of the portfolio date (quarter end). This value is only provided when a security is owned by at least two investors. In the case of reporting dates being different, a weighted average price is calculated.

P = Preferred Stock

Home Help notes Contact Terms of Service Privacy