SION

Sionna Therapeutics, Inc.
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Company Information

Company Name
Sionna Therapeutics, Inc.
CIK
CIK0002036042
Category
<br>Emerging growth company
Ticker: Exchange
SION: Nasdaq
Fiscal Year End
December 31
Owner Organization
03 Life Sciences
SIC
2834
SIC Description
Pharmaceutical Preparations
Ticker
SION

SEC filing data through

Insider Sentiment

Last purchase
2025-06-27
Last sale
2026-09-17
Shares purchased (TTM)
0
Shares sold (TTM)
5,628,323
Buy ratio (TTM)0.0%

Institutional Sentiment

As of
2026-06-30
Institutional shares owned
47,699,400
Shares outstanding
45,148,971
Ownership
105.65%
+9.21% Y/Y

Earnings Market Reaction

Filing date
2026-08-06
Price on filing date
—
1-month reaction
-88.17%
3-month reaction
…
Drift continued2/5 (40%)
Faded / reversed3/5 (60%)

Balance Sheet

Values in millions ($)
Line item2026-06-302026-03-312025-12-312025-09-302025-06-302025-03-31Subscriber-only columnSubscriber-only columnSubscriber-only columnSubscriber-only columnSubscriber-only columnTrend
Assets Current
Cash And Cash Equivalents At Carrying Value636358514183
Debt Securities Available For Sale Excluding Accrued Interest Current148153177197222187
Prepaid Expense And Other Assets Current556444
Assets Current216221241252267274
Property Plant And Equipment Net222222
Debt Securities Available For Sale Excluding Accrued Interest Noncurrent577474777585
Restricted Cash Noncurrent111111
Operating Lease Right Of Use Asset677778
Other Assets Noncurrent110000
Assets283305326339352370
Liabilities Current
Accounts Payable Current And Noncurrent121115
Accrued Liabilities Current9610753
Operating Lease Liability Current111111
Other Liabilities Current0000--
Liabilities Current11101210810
Operating Lease Liability Noncurrent777888
Liabilities171719181618
Temporary Equity Carrying Amount Attributable To Parent--0000
Equity
Preferred Stock Value000000
Common Stock Value000000
Additional Paid In Capital579571563557552549
Accumulated Other Comprehensive Income Loss Net Of Tax-0-01000
Retained Earnings Accumulated Deficit-313-283-256-236-216-198
Stockholders Equity266288307322336352
Liabilities And Stockholders Equity283305326339352370
Series Seed Convertible Preferred Stock--0000
Series A Convertible Preferred Stock--0000
Series B Convertible Preferred Stock--0000
Series C Convertible Preferred Stock--0000
Temporary Equity Shares Outstanding--0---
Preferred Stock Par Or Stated Value Per Share0.000.000.000.000.000.00
Preferred Stock Shares Authorized101010101010
Preferred Stock Shares Issued000000
Preferred Stock Shares Outstanding000000
Common Stock Par Or Stated Value Per Share0.000.000.000.000.000.00
Common Stock Shares Authorized500500500500500500
Common Stock Shares Issued454545444444
Shares Outstanding454545444444

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Sionna Therapeutics, Inc. (SION) — SEC Financial Statements & Analysis

Sionna Therapeutics, Inc. (SION) is a pharmaceutical preparations company, incorporated in DE. Sionna Therapeutics, Inc. trades on Nasdaq as: SION. Sionna Therapeutics, Inc. (SION)'s most recent SEC filing is a Form 10-Q for the period ended 2026-06-30, filed with the SEC on 2026-08-06. Based on that filing, Sionna Therapeutics, Inc. carries a market cap of $1.99B, a P/E ratio of -20.39x, a P/B ratio of 7.47x, an enterprise value of $1.92B, and an EV/EBITDA multiple of -17.68x. On profitability, it posts a Return on Equity (ROE) of -32.34%, a Return on Assets (ROA) of -30.66%, and a Return on Invested Capital (ROIC) of -44.06%. Per share, it reports EPS of $-2.16, diluted EPS of $-2.16, free cash flow per share of $-1.69, and a dividend per share of $0.00. On the balance sheet, it maintains a current ratio of 20.05x, a quick ratio of 19.57x, working capital of $205.35M, a debt-to-equity ratio of 0.07x, a debt ratio of 0.06, free cash flow of $-76.21M (TTM), and net debt of $-63.32M. Figures sourced from SEC EDGAR.

Market Cap
$1.99B
P/E TTM
-20.39x
EPS TTM
$-2.16
P/B TTM
7.47x
ROE TTM
-32.34%
ROA TTM
-30.66%
Debt To Equity
0.07x
Free Cash Flow TTM
$-76.21M

Data as of 2026-06-30 · Source: SEC EDGAR

Frequently Asked Questions

What industry is Sionna Therapeutics, Inc. in?

Sionna Therapeutics, Inc. (SION) operates in the Pharmaceutical Preparations industry.

What exchange does SION trade on?

Sionna Therapeutics, Inc. (SION) trades on the Nasdaq.

Where is Sionna Therapeutics, Inc. incorporated?

Sionna Therapeutics, Inc. is incorporated in DE.

When was Sionna Therapeutics, Inc. (SION)'s most recent SEC filing?

Sionna Therapeutics, Inc. (SION)'s most recent SEC filing is a Form 10-Q for the period ended 2026-06-30, filed with the SEC on 2026-08-06.

What is SION's market cap?

Sionna Therapeutics, Inc. (SION) has a market capitalization of $1.99B as of 2026-06-30.

What is SION's EPS (earnings per share)?

Sionna Therapeutics, Inc. (SION)'s trailing twelve month EPS is $-2.16 as of 2026-06-30.

What is SION's ROE (return on equity)?

Sionna Therapeutics, Inc. (SION)'s trailing twelve month Return on Equity (ROE) is -32.34% as of 2026-06-30.

What is SION's ROA (return on assets)?

Sionna Therapeutics, Inc. (SION)'s trailing twelve month Return on Assets (ROA) is -30.66% as of 2026-06-30.

What is SION's ROIC (return on invested capital)?

Sionna Therapeutics, Inc. (SION)'s trailing twelve month Return on Invested Capital (ROIC) is -44.06% as of 2026-06-30.

What is SION's EV/EBITDA?

Sionna Therapeutics, Inc. (SION)'s trailing twelve month EV/EBITDA is -17.68x as of 2026-06-30.

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