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DCF valuation

What is Amphastar Pharmaceuticals, Inc. worth?

With the base-case assumptions below, a discounted cash flow model on Amphastar Pharmaceuticals, Inc.'s reported free cash flow gives $74.60 per share. The share price was $29.06 on November 10, 2026, 61% below that value.

Inputs from the filings

Free cash flow, fiscal 2025
$121.2M
Average free cash flow, last 5 years
$114.9M
Cash
$204.6M
balance sheet of September 30, 2026
Debt
$613M
balance sheet of September 30, 2026
Diluted shares, fiscal 2025
48,215,000
Revenue growth per year, last 5 years
15.5%

Three sets of assumptions

CaseGrowth yrs 1-5Growth yrs 6-10After year 10Discount rateValue per shareValue vs price
Bear10.0%6.0%2.0%10.0%$42.01+45%
Base15.0%9.0%2.5%9.0%$74.60+157%
Bull20.0%11.5%3.0%8.0%$135.30+366%

Sensitivity: base case value per share

Discount rate down the side, growth after year 10 across the top. Everything else as in the base case.

1.5%2.0%2.5%3.0%3.5%
7.0%$99.29$106.98$116.39$128.14$143.26
8.0%$80.74$85.74$91.63$98.71$107.36
9.0%$67.25$70.67$74.60$79.20$84.63
10.0%$57.03$59.45$62.20$65.35$68.97
11.0%$49.02$50.80$52.79$55.03$57.56

Where the presets come from

Base: years 1 to 5 grow at Amphastar Pharmaceuticals, Inc.'s revenue growth rate over the last 5 fiscal years (15.5% a year), held between -5% and 15%. Years 6 to 10 grow halfway between that and the long-run rate of 2.5%. Future cash is discounted at 9% a year.

Bear: 5 points less growth, 2% long-run growth, 10% discount rate. Bull: 5 points more growth (at most 25%), 3% long-run growth, 8% discount rate.

Value per share = (present value of 10 years of free cash flow + present value of everything after + cash - debt) / diluted shares.

This is a model run on assumptions, not a recommendation or a price target. Small changes in the discount rate or growth move the result a lot, as the table above shows. Change them yourself in the calculator.

Adjust the assumptions

Move the sliders for growth, long-run growth and discount rate, or switch to average free cash flow, and see the value per share change.

Adjust the assumptions

Amphastar Pharmaceuticals, Inc. company page