The Filing Desk

Amphstar Pharmaceuticals vs Collegium Pharmaceutical

Amphstar Pharmaceuticals AMPH · Collegium Pharmaceutical COLL · Pharmaceuticals

Collegium Pharmaceutical reported revenue of $781 million in fiscal 2025, about the same as Amphstar Pharmaceuticals' $720 million in fiscal 2025. Amphstar Pharmaceuticals' revenue fell 1.6% in its latest year, and Collegium Pharmaceutical's grew 23.6%. Amphstar Pharmaceuticals had an operating margin of 19.5%, against 23.0% at Collegium Pharmaceutical. Free cash flow was $121 million at Amphstar Pharmaceuticals and $328 million at Collegium Pharmaceutical.

Side by side

Amphstar PharmaceuticalsCollegium Pharmaceutical
Latest fiscal yearFY2025, Dec 31, 2025FY2025, Dec 31, 2025
Revenue$720M$781M
Revenue growth−1.6%23.6%
Revenue growth a year, last 5 years15.5%20.3%
Gross margin49.5%59.4%
Operating margin19.5%23.0%
Net margin13.6%8.1%
Free cash flow$121M$328M
Free cash flow margin16.8%42.0%
Return on capital9.9%53.4%
Net debt to EBITDA1.7x−0.4x
Dividends and buybacks$76M$25M
Change in diluted share count−7.4%−1.8%
Last close$25.47$23.21
P/E at the last close15.1×18.7×
Insider trades, last 12 monthssold $1.7 millionsold $7.2 million
Piotroski F-score6 of 96 of 9
Amounts in each company's own currency, US$ unless marked (a foreign company may report in another), each company's latest fiscal year from its 10-K, or 20-F or 40-F for a foreign company. Growth rates compare with the year before; the five-year rate is the average a year. Free cash flow is cash from operations minus capital spending; return on capital is after-tax operating income over the money invested in the business; P/E is the last close over the latest earnings per share. Banks are measured differently (return on equity, efficiency ratio), so some rows apply to one company only.

Ten years

Revenue
US$ billions, fiscal years
Amphstar PharmaceuticalsCollegium Pharmaceutical
Operating margin
Percent of revenue
Amphstar PharmaceuticalsCollegium Pharmaceutical
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
Amphstar PharmaceuticalsCollegium Pharmaceutical

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Source: the companies' Form 10-K filings, from SEC EDGAR, and the last close. For information only, not investment advice: the figures describe results, not which company is the better investment. The Filing Desk is not affiliated with either company. Full figures on the Amphstar Pharmaceuticals and Collegium Pharmaceutical pages.