Aspen Aerogels Inc. (ASPN) intrinsic value & 10-year financials

Aspen Aerogels Inc. (ASPN) has a Graham intrinsic value of $3.59 per share. At $5.19 on Oct 17, 2026, the stock trades 45% above that value. Over the last 10 fiscal years revenue grew 9.7% a year to $271.1M, with an average return on invested capital of -36.6%.

Graham intrinsic value
$3.59
Share price (Oct 17, 2026)
$5.19
Price vs Graham value
45% above
Market cap
$427.3M
Revenue (FY2025)
$271.1M
Revenue growth (10-yr CAGR)
9.7%
ROIC (10-yr avg)
-36.6%
Free cash flow (FY2025)
-$4.6M

ASPN 10-year financial history

Fiscal year Revenue Net income EPS (diluted) Free cash flow Operating margin ROIC
FY2025 $271.1M -$389.6M -$4.73 -$4.6M -139.5% -104.3%
FY2024 $452.7M $13.4M $0.17 -$40.7M 12.0% 10.7%
FY2023 $238.7M -$45.8M -$0.66 -$218.1M -20.6% -17.9%
FY2022 $180.4M -$82.7M -$2.10 -$272.4M -43.9% -64.9%
FY2021 $121.6M -$37.1M -$1.22 -$32.4M -33.4% -60.1%
FY2020 $100.3M -$21.8M -$0.83 -$13.3M -21.5% -36.9%
FY2019 $139.4M -$14.6M — -$3.2M -10.2% -24.4%
FY2018 $104.4M -$34.4M — -$12.2M -32.5% -40.2%
FY2017 $111.6M -$19.3M — -$10.7M -17.1% -17.8%
FY2016 $117.7M -$12.0M — -$13.8M -9.5% -10.4%

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

Executive summary

ASPEN AEROGELS INC is a consistent compounder, expanding top-line revenue at 9.7% annually over the past decade.

ASPEN AEROGELS INC has historically struggled to out-earn its cost of capital, averaging just -36.6% ROIC.

ASPEN AEROGELS 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, ASPEN AEROGELS INC is modeled at 8.0% normalized earnings growth with a 5.1% bond-yield adjustment. The resulting Graham intrinsic value estimate is $3.59 per share.

ASPN stock: frequently asked questions

What is the intrinsic value of Aspen Aerogels Inc. (ASPN) stock?

Using Benjamin Graham's revised formula, V = EPS × (8.5 + 2g) × 4.4 / Y, with reported diluted earnings per share, a 8.0% normalized growth rate (capped at 15%) and a 5.1% AAA corporate bond yield, ASPN's intrinsic value is about $3.59 per share.

Is ASPN stock undervalued?

At $5.19 (close on Oct 17, 2026), ASPN trades 45% above its Graham value of $3.59. On Graham's terms the shares look fully priced. A formula is a starting point for research, not a recommendation.

How fast has Aspen Aerogels Inc. grown?

Revenue went from $117.7M in fiscal 2016 to $271.1M in fiscal 2025, a compound annual growth rate of 9.7%. Net income was -$389.6M in fiscal 2025.

Does Aspen Aerogels Inc. generate free cash flow?

Aspen Aerogels Inc. generated -$4.6M of free cash flow (operating cash flow minus capital expenditures) in fiscal 2025. Free cash flow was positive in 0 of the last 10 reported years.

What is ASPN's return on invested capital?

Average ROIC over the last 10 fiscal years was -36.6%, and average return on equity was -29.1%. Sustained ROIC above about 15% usually points to a durable competitive advantage.

Where does this ASPN data come from?

From Aspen Aerogels Inc.'s annual 10-K filings on SEC EDGAR, most recently filed May 8, 2026. Prices are end-of-day snapshots; valuations are formula outputs, not investment advice.

Similar wholesale-lumber & other construction materials stocks