Inspire Medical Systems, Inc. (INSP) intrinsic value & 10-year financials

Inspire Medical Systems, Inc. (INSP) has a Graham intrinsic value of $162.42 per share. At $68.79 on Oct 17, 2026, the stock trades 58% below that value. Over the last 10 fiscal years revenue grew 56.2% a year to $912.0M, with an average return on invested capital of -18.9%.

Graham intrinsic value
$162.42
Share price (Oct 17, 2026)
$68.79
Price vs Graham value
58% below
Market cap
$2.0B
Revenue (FY2025)
$912.0M
Revenue growth (10-yr CAGR)
56.2%
ROIC (10-yr avg)
-18.9%
Free cash flow (FY2025)
$78.5M

INSP 10-year financial history

Fiscal year Revenue Net income EPS (diluted) Free cash flow Operating margin ROIC
FY2025 $912.0M $145.4M $4.89 $78.5M 5.6% 8.0%
FY2024 $802.8M $53.5M $1.75 $91.1M 4.5% 6.7%
FY2023 $624.8M -$21.2M -$0.72 $1.0M -6.4% -17.0%
FY2022 $407.9M -$44.9M -$1.60 $2.5M -11.7% -80.0%
FY2021 $233.4M -$42.0M -$1.54 -$24.8M -17.1% -62.9%
FY2020 $115.4M -$57.2M -$2.19 -$55.5M -48.7% -53.3%
FY2019 $82.0M -$33.2M -$1.40 -$35.6M -42.5% -30.0%
FY2018 $50.6M -$21.8M — -$18.9M -40.3% -40.7%
FY2017 $28.6M -$17.5M — -$16.2M -56.0% -181.2%
FY2016 $16.4M -$18.5M — -$18.3M -105.0% 261.1%

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

Executive summary

Inspire Medical Systems, Inc. is a consistent compounder, expanding top-line revenue at 56.3% annually over the past decade.

Inspire Medical Systems, Inc. has historically struggled to out-earn its cost of capital, averaging just -30.1% ROIC.

Inspire Medical Systems, Inc. capital allocation metrics are N/A for the decade; share count and net debt history are incomplete.

Benjamin Graham lens

Under Benjamin Graham's formula using SEC EDGAR fundamentals, Inspire Medical Systems, Inc. is modeled at 15.0% normalized earnings growth with a 5.1% bond-yield adjustment. The resulting Graham intrinsic value estimate is $162.42 per share.

INSP stock: frequently asked questions

What is the intrinsic value of Inspire Medical Systems, Inc. (INSP) stock?

Using Benjamin Graham's revised formula, V = EPS × (8.5 + 2g) × 4.4 / Y, with reported diluted earnings per share, a 15.0% normalized growth rate (capped at 15%) and a 5.1% AAA corporate bond yield, INSP's intrinsic value is about $162.42 per share.

Is INSP stock undervalued?

At $68.79 (close on Oct 17, 2026), INSP trades 58% below its Graham value of $162.42. On Graham's terms that leaves a margin of safety. A formula is a starting point for research, not a recommendation.

How fast has Inspire Medical Systems, Inc. grown?

Revenue went from $16.4M in fiscal 2016 to $912.0M in fiscal 2025, a compound annual growth rate of 56.2%. Net income was $145.4M in fiscal 2025.

Does Inspire Medical Systems, Inc. generate free cash flow?

Inspire Medical Systems, Inc. generated $78.5M of free cash flow (operating cash flow minus capital expenditures) in fiscal 2025. Free cash flow was positive in 4 of the last 10 reported years.

What is INSP's return on invested capital?

Average ROIC over the last 10 fiscal years was -18.9%, and average return on equity was 85.8%. Sustained ROIC above about 15% usually points to a durable competitive advantage.

Where does this INSP data come from?

From Inspire Medical Systems, Inc.'s annual 10-K filings on SEC EDGAR, most recently filed Aug 3, 2026. Prices are end-of-day snapshots; valuations are formula outputs, not investment advice.

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