Event-Driven Stocks

Korro Bio, Inc.

KRRONasdaq

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

View price & chart on Yahoo Finance ↗
Signs● 2 good● 3 warning● 1 severedetails ↓

Financials

SEC XBRL · annual
 FY25FY24FY23FY22FY21FY20
Revenue$6.4M$2.3M$0$0$14.1M$7.3M
Operating income−$121.9M−$91.9M−$84.5M−$59.0M−$84.0M−$27.6M
Net income−$117.3M−$83.6M−$81.2M−$58.0M−$84.7M−$4.9M
Total assets$113.5M$226.2M$221.7M$73.7M$185.4M$264.7M
Total liabilities$62.1M$65.8M$51.8M$8.9M$54.5M$72.2M
Equity$51.4M$160.4M$169.9M−$99.0M−$42.2M$192.5M
EPS (diluted)$-12.48$-9.37$-53.08$-227.42——
Shares out.9.4M8.0M35.3M35.0M34.2M30.9M

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
−1906.4%
Net margin
−1834.5%
Return on equity
−228.0%
Return on assets
−103.3%
Return on capital (ROCE)
−120.0%
Liabilities / assets
54.7%
Debt / equity
1.21×
Book value / share
$5.48
Revenue growth (YoY)
181.5%
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)
-13.30distress
Accruals / assets
−34.1%clean
Piotroski F-Score
3/9weak

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
62
/ 100
Profitability 0Growth 100Catalyst 67Earnings quality 67Financial strength 75

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. What these scores mean →

Signs

● 1 severe● 3 warning● 2 good
  • Altman Z″ in the distress zone
  • Operating losses (negative operating margin)
  • Reported a net loss
  • Negative operating cash flow
  • Revenue is growing year-over-year
  • Clean earnings (low accruals)

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

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, 20261.2M11.4+6.9%
Apr 30, 20261.1M15.7+3.0%
Apr 15, 20261.1M5.0+2.1%
Mar 31, 20261.1M5.2+4.3%
Mar 13, 20261.0M3.4-2.3%

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 (1)

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