Amphastar Pharmaceuticals, Inc. (AMPH) intrinsic value & 10-year financials

Amphastar Pharmaceuticals, Inc. (AMPH) has a Graham intrinsic value of $67.43 per share. At $25.87 on Oct 17, 2026, the stock trades 62% below that value. Over the last 10 fiscal years revenue grew 12.2% a year to $719.9M, with an average return on invested capital of 8.3%.

Graham intrinsic value
$67.43
Share price (Oct 17, 2026)
$25.87
Price vs Graham value
62% below
Market cap
$1.2B
Revenue (FY2025)
$719.9M
Revenue growth (10-yr CAGR)
12.2%
ROIC (10-yr avg)
8.3%
Free cash flow (FY2025)
$121.2M

AMPH 10-year financial history

Fiscal year Revenue Net income EPS (diluted) Free cash flow Operating margin ROIC
FY2025 $719.9M $98.1M $2.03 $121.2M 19.5% 9.2%
FY2024 $732.0M $159.5M $3.06 $172.3M 28.1% 15.3%
FY2023 $644.4M $137.5M $2.60 $145.3M 30.6% 20.9%
FY2022 $499.0M $91.4M $1.74 $65.1M 21.5% 20.4%
FY2021 $437.8M $62.1M $1.25 $70.5M 16.0% 14.2%
FY2020 $349.8M $1.4M $0.03 $23.4M 3.1% 1.6%
FY2019 $322.4M $48.9M $0.98 $207.0K -0.0% -0.0%
FY2018 $294.7M -$5.7M -$0.12 -$8.6M -2.9% -1.8%
FY2017 $240.2M $4.5M $0.09 $4.1M -0.4% -0.3%
FY2016 $255.2M $10.5M $0.22 $17.2M 6.1% 3.8%

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

Executive summary

Amphastar Pharmaceuticals, Inc. is a consistent compounder, expanding top-line revenue at 12.2% annually over the past decade.

Amphastar Pharmaceuticals, Inc. returns on capital have been average, hovering around 8.3% ROIC over the decade.

Over the decade, Amphastar Pharmaceuticals, Inc. shows that the company has leveraged its balance sheet to sustain operations.

Benjamin Graham lens

Under Benjamin Graham's formula using SEC EDGAR fundamentals, Amphastar Pharmaceuticals, Inc. is modeled at 15.0% normalized earnings growth with a 5.1% bond-yield adjustment. The resulting Graham intrinsic value estimate is $67.43 per share.

AMPH stock: frequently asked questions

What is the intrinsic value of Amphastar Pharmaceuticals, Inc. (AMPH) 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, AMPH's intrinsic value is about $67.43 per share.

Is AMPH stock undervalued?

At $25.87 (close on Oct 17, 2026), AMPH trades 62% below its Graham value of $67.43. On Graham's terms that leaves a margin of safety. A formula is a starting point for research, not a recommendation.

How fast has Amphastar Pharmaceuticals, Inc. grown?

Revenue went from $255.2M in fiscal 2016 to $719.9M in fiscal 2025, a compound annual growth rate of 12.2%. Net income was $98.1M in fiscal 2025.

Does Amphastar Pharmaceuticals, Inc. generate free cash flow?

Amphastar Pharmaceuticals, Inc. generated $121.2M of free cash flow (operating cash flow minus capital expenditures) in fiscal 2025. Free cash flow was positive in 9 of the last 10 reported years.

What is AMPH's return on invested capital?

Average ROIC over the last 10 fiscal years was 8.3%, and average return on equity was 11.0%. Sustained ROIC above about 15% usually points to a durable competitive advantage.

Where does this AMPH data come from?

From Amphastar Pharmaceuticals, Inc.'s annual 10-K filings on SEC EDGAR, most recently filed Aug 6, 2026. Prices are end-of-day snapshots; valuations are formula outputs, not investment advice.

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