TD Asset Management Inc purchased a new position in shares of Sionna Therapeutics, Inc. (NASDAQ:SION - Free Report) during the first quarter, according to the company in its most recent disclosure with the Securities & Exchange Commission. The firm purchased 55,366 shares of the company's stock, valued at approximately $579,000. TD Asset Management Inc owned 0.13% of Sionna Therapeutics as of its most recent SEC filing.
Separately, Jennison Associates LLC acquired a new stake in Sionna Therapeutics during the 1st quarter worth approximately $8,995,000.
Sionna Therapeutics Stock Performance
Sionna Therapeutics stock remained flat at $17.28 during trading on Friday. 53,780 shares of the company were exchanged, compared to its average volume of 187,053. Sionna Therapeutics, Inc. has a 12-month low of $7.26 and a 12-month high of $25.19. The stock's 50-day simple moving average is $17.47.
Sionna Therapeutics (NASDAQ:SION - Get Free Report) last issued its quarterly earnings data on Monday, May 12th. The company reported ($0.62) EPS for the quarter, missing analysts' consensus estimates of ($0.45) by ($0.17).
Wall Street Analysts Forecast Growth
Separately, Wall Street Zen cut shares of Sionna Therapeutics from a "hold" rating to a "sell" rating in a research report on Thursday, May 22nd.
Read Our Latest Stock Report on Sionna Therapeutics
Insider Activity at Sionna Therapeutics
In other news, major shareholder Tpg Gp A, Llc bought 60,000 shares of the firm's stock in a transaction dated Friday, June 27th. The stock was acquired at an average cost of $15.84 per share, for a total transaction of $950,400.00. Following the completion of the purchase, the insider owned 6,744,962 shares of the company's stock, valued at $106,840,198.08. This trade represents a 0.90% increase in their ownership of the stock. The acquisition was disclosed in a document filed with the Securities & Exchange Commission, which can be accessed through this hyperlink. Insiders own 3.90% of the company's stock.
About Sionna Therapeutics
(
Free Report)
We are a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (“CF”) patients by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (“CFTR”) protein to deliver clinically meaningful benefit to CF patients.
Read More

Before you consider Sionna Therapeutics, you'll want to hear this.
MarketBeat keeps track of Wall Street's top-rated and best performing research analysts and the stocks they recommend to their clients on a daily basis. MarketBeat has identified the five stocks that top analysts are quietly whispering to their clients to buy now before the broader market catches on... and Sionna Therapeutics wasn't on the list.
While Sionna Therapeutics currently has a Buy rating among analysts, top-rated analysts believe these five stocks are better buys.
View The Five Stocks Here
MarketBeat's analysts have just released their top five short plays for September 2025. Learn which stocks have the most short interest and how to trade them. Enter your email address to see which companies made the list.
Get This Free Report
Like this article? Share it with a colleague.
Link copied to clipboard.