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Sionna Therapeutics, Inc. (SION) Stock Analysis

Healthcare

Sionna Therapeutics, Inc.

$42.88

+$1.75 (+4.25%)

Last Updated: May 26, 2026

Price History

Analysis

Company Overview

Sionna Therapeutics, Inc. operates as a clinical-stage biopharmaceutical company dedicated to researching and developing therapeutic medicines specifically for the treatment of cystic fibrosis. The company functions within the healthcare sector and the biotechnology industry, a domain characterized by high regulatory hurdles and significant capital requirements for drug development and clinical trials. As of the latest data, the company holds a market capitalization of $1.71B and employs a workforce of 59 individuals. The valuation metric of $1.71B suggests a substantial market presence relative to the small employee base, indicating that the market values the company's intellectual property and pipeline assets, particularly its development of galicaftor, at a premium that far exceeds the tangible value generated by its current operations.

Financial Health

The company reports a net income of $-75,268,000 and an EBITDA of $-88,335,000 for the trailing twelve months, while revenue figures are not available in the provided data. The substantial negative gap between revenue and net income, combined with the absence of reported revenue, reveals a cost structure dominated by research and development expenses rather than sales-driven overhead, typical of pre-revenue biotechnology firms. Free cash flow stands at $-44,264,752, which indicates that the company is currently consuming cash reserves to fund its operational activities and drug development initiatives. Gross margin, operating margin, and profit margin are all reported at 0.0%, reflecting that the company has not yet generated profitable sales to offset its extensive operational and development expenditures. The company maintains a cash balance of $235.88M against total debt of $8.68M, resulting in a debt-to-equity ratio of 2.83. Despite the elevated debt-to-equity ratio, the balance sheet appears leveraged but not distressed, as the significant cash hoard provides a robust buffer against short-term debt obligations. The current ratio is 20.61, a figure that suggests exceptional short-term liquidity and an ability to cover liabilities with current assets many times over. Return on Equity is -31.8% and Return on Assets is -21.7%, metrics that indicate management is currently utilizing equity and assets to generate losses rather than profits, a common occurrence in the early clinical stages of biopharmaceutical development.

Valuation Assessment

The trailing twelve-month P/E ratio is not available due to negative earnings, while the forward P/E is listed as -14.70, implying that the market expects earnings to remain negative or that valuation is currently based on non-traditional metrics. The price-to-book ratio is 5.53, which indicates that the stock trades at a significant premium over its book value, reflecting investor confidence in the potential future value of the drug pipeline rather than current asset holdings. Alternative valuation metrics such as the price-to-sales ratio, which is not available, and the EV/EBITDA of -15.96, further highlight the speculative nature of the valuation based on future commercial potential rather than historical profitability. The 52-week high is $45.00 and the 52-week low is $7.25, providing a trading range of $37.75. Without a specific current price to calculate the exact percentage, the stock's position within this wide range underscores the high volatility typical of small-cap biotechnology equities. The beta value is not available, preventing a direct comparison of the stock's price volatility relative to the broader market index.

Growth & Income

Revenue growth year-over-year and earnings growth year-over-year are both listed as not available, preventing a direct comparison of whether earnings are growing faster or slower than revenue in the traditional sense. Since the company does not pay dividends, the dividend yield and payout ratio are not applicable, with the payout ratio effectively at 0.0%. Instead of distributing income to shareholders, the company reinvests all available earnings and cash reserves into research and development to advance its cystic fibrosis treatments. The overall growth and income profile is defined by a focus on capital appreciation through pipeline milestones rather than current income generation or dividend distributions.

Peer Comparison

Sionna Therapeutics, Inc. (SION) operates in the Biotechnology industry. Here is how it compares to its closest peers by market capitalization:

Company Ticker Market Cap P/E Ratio
Sionna Therapeutics, Inc. SION $1.94B N/A
Vertex Pharmaceuticals Incorporated VRTX $110.64B 25.8
Regeneron Pharmaceuticals, Inc. REGN $66.98B 15.6
argenx SE ARGX $50.52B 36.0

The Biotechnology industry average P/E ratio is 53.8x. Sionna Therapeutics, Inc. trades at a P/E of N/A.

This analysis is AI-generated for informational purposes only and should not be considered financial advice. Data may be delayed or inaccurate. Always do your own research and consult a qualified financial advisor before making investment decisions.

About Sionna Therapeutics, Inc.

Sionna Therapeutics, Inc., a clinical-stage biopharmaceutical company, researches and develops medicines for the treatment of cystic fibrosis (CF). It develops galicaftor (SION-2222), a transmembrane domain 1 (TMD1)-directed cystic fibrosis transmembrane conductance regulator (CFTR) that has completed Phase 2 trial; navocaftor (SION-3067), a potentiator that has completed Phase 2 trial; SION-109, an intracellular loop 4 directed CFTR corrector that has completed Phase 1 trial; SION-2851, a TMD1-directed CFTR corrector that has completed Phase 1 trial; SION-451, which is nucleotide-binding domain 1 stabilizer in Phase 1 trial; and SION-719, which is nucleotide-binding domain 1 stabilizer in Phase 2a proof-of-concept trial. The company was formerly known as Sling Therapeutics, Inc. and changed its name to Sionna Therapeutics, Inc. in July 2021. Sionna Therapeutics, Inc. was incorporated in 2019 and is headquartered in Waltham, Massachusetts.

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Key Statistics

Market Cap
$1.94B
P/E Ratio
N/A
52-Week High
$48.45
52-Week Low
$12.55
Avg Volume
384.47K

Data provided by Yahoo Finance via yfinance. Updated daily.

Company Info

Exchange
NASDAQ
Country
United States
Employees
59