CSTL · CIK 0001447362 · FY2025 live · 2025-12-31
CASTLE BIOSCIENCES INC
View as
Model
Z″
FY2025
6.15
Zone
Safe
Prior
—
Market DD
—
1y PD
—
6.15
Classic Z 3.04
Z″ 6.15 · distress below 1.10, grey to 2.60, safe above.
Z″ factor contributions
X1 Working capital / assets
Short-term liquidity. Carries more weight in Z″ than in classic Z.
0.516.56 × = 3.32X2 Retained earnings / assets
Cushion from years of profits. Share buybacks can push this negative at otherwise healthy firms.
−0.393.26 × = −1.26X3 EBIT / assets
Operating return on assets. Highest weight in Z″.
−0.076.72 × = −0.50X4 Book equity / liabilities
Book equity versus the liability stack. Sales / assets is omitted so asset-light names are not punished for turnover.
4.371.05 × = 4.59
Five-year path
Need two annual 10-Ks to draw a path. The desk will pull this issuer’s filings rather than invent a series.
Overview
rule-v1
CASTLE BIOSCIENCES INC is on Z″ at 6.15 (safe) for FY2025, from an SEC 10-K. Book equity / liabilities is the line that sets the print; working capital / assets is the runner-up. This is the first live year on the desk. No market tape loaded. Z″ drops sales/assets so asset-light names are not punished for turnover. X4 is book equity on every name.
Book screen Safe; market PD —. Tape not priced — not a single default call.
Market DD · naive Merton
No market tape yet.
Pull a year of closes (Yahoo, Nasdaq if Yahoo is limited) and size equity from Nasdaq cap or EDGAR shares. Distance-to-default and 1-year PD stay blank until then.
Sector peers
Closest Z″ scores · 87th percentile in Healthcare.
KPI widgets
Current assets
$361M
Total assets
$579M
Current liabilities
$69M
Total liabilities
$108M
Working capital
$292M
Retained earnings
−$224M
EBIT
−$43M
Total sales
$344M
Book equity
$471M
Accession 0001628280-26-012272. Live rank is the latest 10-K on EDGAR (FY2025, period 2025-12-31). Z″ is the live score. View as does not rewrite the live rank. X4 is book equity. Pulled 12 Sept 2026.