Proto Labs Inc. (PRLB) intrinsic value & 10-year financials

Proto Labs Inc. (PRLB) has no Graham intrinsic value right now because the formula needs positive earnings. Over the last 10 fiscal years revenue grew 6.7% a year to $533.1M, with an average return on invested capital of 5.7%.

Graham intrinsic value
—
Share price (Oct 17, 2026)
$85.65
Market cap
$2.1B
Revenue (FY2025)
$533.1M
Revenue growth (10-yr CAGR)
6.7%
ROIC (10-yr avg)
5.7%
Free cash flow (FY2025)
$59.7M

PRLB 10-year financial history

Fiscal year Revenue Net income EPS (diluted) Free cash flow Operating margin ROIC
FY2025 $533.1M $21.2M $0.88 $59.7M 4.7% 3.0%
FY2024 $500.9M $16.6M $0.66 $68.7M 4.0% 2.2%
FY2023 $503.9M $17.2M $0.66 $45.2M 5.6% 2.8%
FY2022 $488.4M -$103.5M -$3.77 $40.4M -20.1% -13.9%
FY2021 $488.1M $33.4M $1.21 $21.0M 8.3% 5.2%
FY2020 $434.4M $50.9M $1.89 $60.0M 13.8% 9.7%
FY2019 $458.7M $63.7M $2.35 $53.8M 17.4% 13.5%
FY2018 $445.6M $76.6M $2.81 $35.8M 20.0% 16.8%
FY2017 $344.5M $51.8M $1.93 $49.1M 21.0% 11.7%
FY2016 $298.1M $42.7M $1.61 $43.9M 20.7% —

Source: annual 10-K filings on SEC EDGAR. Figures in USD.

Executive summary

Proto Labs Inc has demonstrated mature, steady growth, with revenue compounding at 6.7% annually over the past decade.

Proto Labs Inc has historically struggled to out-earn its cost of capital, averaging just 5.7% ROIC.

Proto Labs Inc has not shown aggressive share repurchases (>10% retirement) or a major balance-sheet leverage increase (>50% net debt growth) over the 10-year window.

Benjamin Graham lens

Under Benjamin Graham's formula using SEC EDGAR fundamentals, Proto Labs Inc is modeled at -6.5% normalized earnings growth with a 5.1% bond-yield adjustment. The resulting Graham intrinsic value estimate is $-3.40 per share.

PRLB stock: frequently asked questions

What is the intrinsic value of Proto Labs Inc. (PRLB) stock?

Graham's formula only works with positive earnings. Proto Labs Inc. reported diluted EPS of $0.88 in fiscal 2025, so no Graham value is shown. The 10-year table shows revenue and cash-flow trends instead.

How fast has Proto Labs Inc. grown?

Revenue went from $298.1M in fiscal 2016 to $533.1M in fiscal 2025, a compound annual growth rate of 6.7%. Net income was $21.2M in fiscal 2025.

Does Proto Labs Inc. generate free cash flow?

Proto Labs Inc. generated $59.7M of free cash flow (operating cash flow minus capital expenditures) in fiscal 2025. Free cash flow was positive in 10 of the last 10 reported years.

What is PRLB's return on invested capital?

Average ROIC over the last 10 fiscal years was 5.7%, and average return on equity was 5.7%. Sustained ROIC above about 15% usually points to a durable competitive advantage.

Where does this PRLB data come from?

From Proto Labs Inc.'s annual 10-K filings on SEC EDGAR, most recently filed Jul 31, 2026. Prices are end-of-day snapshots; valuations are formula outputs, not investment advice.

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