Event-Driven Stocks

Sionna Therapeutics, Inc.

SIONNasdaq

Healthcare · Pharmaceutical Preparations · DE · SEC filings ↗ · Compare ⊕

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Signs● 3 good● 1 warningdetails ↓

Financials

SEC XBRL · annual
 FY25FY24
Revenue——
Operating income−$89.0M−$70.6M
Net income−$75.3M−$61.7M
Total assets$326.0M$185.8M
Total liabilities$19.1M$19.1M
Equity$306.8M−$163.7M
EPS (diluted)$-1.88$-15.99
Shares out.44.7M4.7M

Reported figures from the company's SEC filings (XBRL). Blank where a line item isn't cleanly tagged — never estimated.

Key ratios

from filings · FY2025
Operating margin
—
Net margin
—
Return on equity
−24.5%
Return on assets
−23.1%
Return on capital (ROCE)
−28.3%
Liabilities / assets
5.9%
Debt / equity
0.06×
Book value / share
$6.86
Revenue growth (YoY)
—
Net income growth (YoY)
—

Computed from the company's own SEC figures — no market price, so these are facts, not a valuation. Book value per share is reported equity ÷ shares; it is not the stock price.

Financial health

forensic scores · FY2025
Altman Z″ (distress)
17.07safe
Accruals / assets
−2.8%clean
Piotroski F-Score
4/7mixed

Altman Z″is a textbook bankruptcy-distress score from book values only (>2.6 safe · 1.1–2.6 grey · <1.1 distress). Accruals = (net income − operating cash flow) ÷ assets; persistently high accruals are an earnings-quality red flag. Beneish M-Scoreis an eight-ratio screen comparing this year with last (M > −1.78 = elevated manipulation-risk screen, not proof). Piotroski F-Scorecounts how many of nine fundamental-health checks pass (shown as passed / applicable; we use operating margin and total liabilities as documented proxies where the exact input isn't XBRL-tagged). Computed from SEC filings — descriptive factors, not advice or a forecast.

Quality score

EDS Score
59
/ 100
Profitability 0Growth n/aCatalyst 67Earnings quality 67Financial strength 100

Our own multi-factor score from free SEC data — profitability, growth, financial strength, earnings quality, and event/ownership catalysts. No market price and no licensed model: each axis is the share of source-backed checks it passes. Descriptive factors, not advice or a forecast.

Signs

● 1 warning● 3 good
  • Negative operating cash flow
  • Conservative leverage (liabilities < 50% of assets)
  • Clean earnings (low accruals)
  • Altman Z″ in the safe zone

Derived from the company's own SEC figures (fundamentals, forensic scores, filing discipline) — descriptive factors, not advice or a forecast.

Clinical trials

ClinicalTrials.gov · ongoing · next readout first

Interventional studies led by this company. “Readout” is the trial's primary-completion date — an estimate the sponsor reports, not a guarantee.

5%+ owners

SEC Schedule 13D / 13G · last 3 yrs

Holders who disclosed a 5%+ stake. 13D signals intent to influence or control; 13G is a passive holding. Latest filing per holder — open it for the exact stake.

Short interest

FINRA · bi-monthly
SettlementShares shortDays to coverΔ vs prior
May 15, 20264.7M11.3+12.1%
Apr 30, 20264.2M9.3+11.3%
Apr 15, 20263.8M8.5+1.1%
Mar 31, 20263.8M11.3+6.0%
Mar 13, 20263.5M12.3+5.8%

Shares sold short as reported to FINRA. Days-to-cover = short shares ÷ average daily volume — higher means more potential squeeze pressure.

Material events

SEC Form 8-K · most recent

Events the company reported on Form 8-K, labelled by the SEC item code it filed under — its own classification, not our interpretation.

Recent SEC filings

All filings ↗

Event-driven situations (2)

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