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Side-by-side financial comparison of Amphastar Pharmaceuticals, Inc. (AMPH) and Iridium Communications Inc. (IRDM). Click either name above to swap in a different company.

Iridium Communications Inc. is the larger business by last-quarter revenue ($219.1M vs $183.1M, roughly 1.2× Amphastar Pharmaceuticals, Inc.). Amphastar Pharmaceuticals, Inc. runs the higher net margin — 13.3% vs 9.9%, a 3.5% gap on every dollar of revenue. On growth, Iridium Communications Inc. posted the faster year-over-year revenue change (1.9% vs -1.8%). Over the past eight quarters, Iridium Communications Inc.'s revenue compounded faster (4.4% CAGR vs 3.2%).

Amphastar Pharmaceuticals is a publicly traded American speciality pharmaceutical company. It was incorporated in May 2004 and primarily develops, manufactures, and sells inhalation and intranasal products.

Iridium Communications Inc. is a publicly traded American company headquartered in McLean, Virginia, United States. Iridium operates the Iridium satellite constellation, a system of 80 satellites: 66 are active satellites and the remaining fourteen function as in-orbit spares. Iridium Satellites are used for worldwide voice and data communication from handheld satellite phones, satellite messenger communication devices and integrated transceivers, as well as for two-way satellite messaging se...

AMPH vs IRDM — Head-to-Head

Bigger by revenue
IRDM
IRDM
1.2× larger
IRDM
$219.1M
$183.1M
AMPH
Growing faster (revenue YoY)
IRDM
IRDM
+3.8% gap
IRDM
1.9%
-1.8%
AMPH
Higher net margin
AMPH
AMPH
3.5% more per $
AMPH
13.3%
9.9%
IRDM
Faster 2-yr revenue CAGR
IRDM
IRDM
Annualised
IRDM
4.4%
3.2%
AMPH

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
AMPH
AMPH
IRDM
IRDM
Revenue
$183.1M
$219.1M
Net Profit
$24.4M
$21.6M
Gross Margin
46.8%
Operating Margin
19.4%
23.2%
Net Margin
13.3%
9.9%
Revenue YoY
-1.8%
1.9%
Net Profit YoY
-35.7%
EPS (diluted)
$0.51

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
AMPH
AMPH
IRDM
IRDM
Q1 26
$219.1M
Q4 25
$183.1M
$212.9M
Q3 25
$191.8M
$226.9M
Q2 25
$174.4M
$216.9M
Q1 25
$170.5M
$214.9M
Q4 24
$186.5M
$213.0M
Q3 24
$191.2M
$212.8M
Q2 24
$182.4M
$201.1M
Net Profit
AMPH
AMPH
IRDM
IRDM
Q1 26
$21.6M
Q4 25
$24.4M
$24.9M
Q3 25
$17.4M
$37.1M
Q2 25
$31.0M
$22.0M
Q1 25
$25.3M
$30.4M
Q4 24
$38.0M
$36.3M
Q3 24
$40.4M
$24.4M
Q2 24
$37.9M
$32.3M
Gross Margin
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
46.8%
Q3 25
51.4%
Q2 25
49.6%
Q1 25
50.0%
Q4 24
46.5%
Q3 24
53.3%
Q2 24
52.2%
Operating Margin
AMPH
AMPH
IRDM
IRDM
Q1 26
23.2%
Q4 25
19.4%
25.9%
Q3 25
13.2%
30.9%
Q2 25
24.2%
23.2%
Q1 25
21.9%
28.1%
Q4 24
24.2%
24.5%
Q3 24
29.8%
25.8%
Q2 24
30.3%
21.7%
Net Margin
AMPH
AMPH
IRDM
IRDM
Q1 26
9.9%
Q4 25
13.3%
11.7%
Q3 25
9.0%
16.4%
Q2 25
17.8%
10.1%
Q1 25
14.8%
14.2%
Q4 24
20.4%
17.1%
Q3 24
21.1%
11.5%
Q2 24
20.8%
16.1%
EPS (diluted)
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
$0.51
$0.24
Q3 25
$0.37
$0.35
Q2 25
$0.64
$0.20
Q1 25
$0.51
$0.27
Q4 24
$0.74
$0.30
Q3 24
$0.78
$0.21
Q2 24
$0.73
$0.27

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
AMPH
AMPH
IRDM
IRDM
Cash + ST InvestmentsLiquidity on hand
$282.8M
Total DebtLower is stronger
$608.7M
Stockholders' EquityBook value
$788.8M
Total Assets
$1.6B
Debt / EquityLower = less leverage
0.77×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
$282.8M
$96.5M
Q3 25
$276.2M
$88.5M
Q2 25
$231.8M
$79.3M
Q1 25
$236.9M
$50.9M
Q4 24
$221.6M
$93.5M
Q3 24
$250.5M
$159.6M
Q2 24
$217.8M
$63.5M
Total Debt
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
$608.7M
$1.8B
Q3 25
$608.6M
Q2 25
$607.7M
Q1 25
$603.9M
Q4 24
$601.6M
$1.8B
Q3 24
$596.4M
Q2 24
$586.9M
Stockholders' Equity
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
$788.8M
$462.6M
Q3 25
$776.7M
$450.5M
Q2 25
$757.5M
$473.6M
Q1 25
$751.3M
$518.4M
Q4 24
$732.3M
$576.6M
Q3 24
$727.7M
$663.8M
Q2 24
$713.3M
$786.7M
Total Assets
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
$1.6B
$2.5B
Q3 25
$1.7B
$2.6B
Q2 25
$1.6B
$2.6B
Q1 25
$1.6B
$2.6B
Q4 24
$1.6B
$2.7B
Q3 24
$1.5B
$2.8B
Q2 24
$1.5B
$2.7B
Debt / Equity
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
0.77×
3.80×
Q3 25
0.78×
Q2 25
0.80×
Q1 25
0.80×
Q4 24
0.82×
3.05×
Q3 24
0.82×
Q2 24
0.82×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
AMPH
AMPH
IRDM
IRDM
Operating Cash FlowLast quarter
$32.9M
Free Cash FlowOCF − Capex
$24.6M
FCF MarginFCF / Revenue
13.4%
Capex IntensityCapex / Revenue
4.5%
13.7%
Cash ConversionOCF / Net Profit
1.35×
TTM Free Cash FlowTrailing 4 quarters
$121.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
$32.9M
$108.6M
Q3 25
$52.6M
$100.8M
Q2 25
$35.6M
$129.6M
Q1 25
$35.1M
$61.1M
Q4 24
$29.0M
$104.8M
Q3 24
$60.0M
$118.6M
Q2 24
$69.1M
$81.1M
Free Cash Flow
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
$24.6M
$75.1M
Q3 25
$47.2M
$79.2M
Q2 25
$25.0M
$108.9M
Q1 25
$24.4M
$36.5M
Q4 24
$16.6M
$80.5M
Q3 24
$46.2M
$100.0M
Q2 24
$63.1M
$68.7M
FCF Margin
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
13.4%
35.3%
Q3 25
24.6%
34.9%
Q2 25
14.3%
50.2%
Q1 25
14.3%
17.0%
Q4 24
8.9%
37.8%
Q3 24
24.1%
47.0%
Q2 24
34.6%
34.2%
Capex Intensity
AMPH
AMPH
IRDM
IRDM
Q1 26
13.7%
Q4 25
4.5%
15.7%
Q3 25
2.8%
9.5%
Q2 25
6.1%
9.5%
Q1 25
6.3%
11.4%
Q4 24
6.7%
11.4%
Q3 24
7.2%
8.7%
Q2 24
3.3%
6.2%
Cash Conversion
AMPH
AMPH
IRDM
IRDM
Q1 26
Q4 25
1.35×
4.37×
Q3 25
3.03×
2.71×
Q2 25
1.15×
5.90×
Q1 25
1.39×
2.01×
Q4 24
0.76×
2.88×
Q3 24
1.48×
4.85×
Q2 24
1.82×
2.51×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

AMPH
AMPH

Other Products$62.4M34%
Baqsimi$46.7M26%
Primatenemist$27.9M15%
Epinephrine$17.1M9%
Lidocaine$14.9M8%
Glucagon$14.1M8%

IRDM
IRDM

Voice and data$57.4M26%
IoT data (2)$46.0M21%
Government$39.5M18%
Government service revenue (5)$27.6M13%
Subscriber equipment$20.2M9%
Hosted payload and other data service (4)$14.8M7%
Broadband (3)$12.2M6%
Commercial$1.3M1%

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