Proto Labs, Inc. — Earnings Quality Grade C
PRLB · Industrials
Some red flags
Screening Summary
Management Signals
Financial Trends
Revenue & Net Income ($B)
Margins (%)
18-Point Screening
Revenue Quality
DSO 54 days, change +6 days YoY
AR growth 18.7% exceeds revenue growth 6.4%
Revenue 6.4%, CFFO -4.3%. Cash follows revenue
Expense Quality
Inventory 17.0% vs COGS 6.6%. Normal
CapEx growth 61.9% is >2x revenue growth 6.4%
SG&A/Gross Profit = 70.9%, exceeds 70%
Gross margin 44.5%, change -0.1pp. Stable
Cash Flow Quality
CFFO/NI = 3.51. Profits backed by cash
FCF $0.1B, FCF/NI = 2.81
Accruals ratio = -7.0%. Low accruals
Cash $0.1B covers debt $0.0B
Balance Sheet Health
Goodwill+Intangibles $0.3B = 43% of equity
Debt/EBITDA = 0.1x. Healthy
Other assets -1.8% vs revenue 6.4%. Normal
No write-off data
Acquisition Risk
FCF after acquisitions positive
Goodwill+Intangibles change -1% YoY. Normal
Manipulation Score
M-Score = -2.74 (< -2.22). Unlikely manipulator
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Generated from public financial data using forensic accounting frameworks. Not investment advice. Data: Yahoo Finance · 2026-04-25