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

Enphase Energy is the larger business by last-quarter revenue ($282.9M vs $183.1M, roughly 1.5× Amphastar Pharmaceuticals, Inc.). Amphastar Pharmaceuticals, Inc. runs the higher net margin — 13.3% vs -2.6%, a 16.0% gap on every dollar of revenue. On growth, Amphastar Pharmaceuticals, Inc. posted the faster year-over-year revenue change (-1.8% vs -20.6%). Enphase Energy produced more free cash flow last quarter ($83.0M vs $24.6M). Over the past eight quarters, Amphastar Pharmaceuticals, Inc.'s revenue compounded faster (3.2% CAGR vs -3.4%).

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.

Enphase Energy, Inc. is an American energy technology company headquartered in Fremont, California, that develops and manufactures solar micro-inverters, battery energy storage, and EV charging stations primarily for residential customers. Enphase was established in 2006 and is the first company to successfully commercialize solar micro-inverters, which convert the direct current (DC) power generated by solar panels into grid-compatible alternating current (AC) for use or export.

AMPH vs ENPH — Head-to-Head

Bigger by revenue
ENPH
ENPH
1.5× larger
ENPH
$282.9M
$183.1M
AMPH
Growing faster (revenue YoY)
AMPH
AMPH
+18.7% gap
AMPH
-1.8%
-20.6%
ENPH
Higher net margin
AMPH
AMPH
16.0% more per $
AMPH
13.3%
-2.6%
ENPH
More free cash flow
ENPH
ENPH
$58.4M more FCF
ENPH
$83.0M
$24.6M
AMPH
Faster 2-yr revenue CAGR
AMPH
AMPH
Annualised
AMPH
3.2%
-3.4%
ENPH

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
AMPH
AMPH
ENPH
ENPH
Revenue
$183.1M
$282.9M
Net Profit
$24.4M
$-7.4M
Gross Margin
46.8%
35.5%
Operating Margin
19.4%
54.0%
Net Margin
13.3%
-2.6%
Revenue YoY
-1.8%
-20.6%
Net Profit YoY
-35.7%
-124.9%
EPS (diluted)
$0.51
$-0.06

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
ENPH
ENPH
Q1 26
$282.9M
Q4 25
$183.1M
$343.3M
Q3 25
$191.8M
$410.4M
Q2 25
$174.4M
$363.2M
Q1 25
$170.5M
$356.1M
Q4 24
$186.5M
$382.7M
Q3 24
$191.2M
$380.9M
Q2 24
$182.4M
$303.5M
Net Profit
AMPH
AMPH
ENPH
ENPH
Q1 26
$-7.4M
Q4 25
$24.4M
$38.7M
Q3 25
$17.4M
$66.6M
Q2 25
$31.0M
$37.1M
Q1 25
$25.3M
$29.7M
Q4 24
$38.0M
$62.2M
Q3 24
$40.4M
$45.8M
Q2 24
$37.9M
$10.8M
Gross Margin
AMPH
AMPH
ENPH
ENPH
Q1 26
35.5%
Q4 25
46.8%
44.3%
Q3 25
51.4%
47.8%
Q2 25
49.6%
46.9%
Q1 25
50.0%
47.2%
Q4 24
46.5%
51.8%
Q3 24
53.3%
46.8%
Q2 24
52.2%
45.2%
Operating Margin
AMPH
AMPH
ENPH
ENPH
Q1 26
54.0%
Q4 25
19.4%
6.5%
Q3 25
13.2%
16.1%
Q2 25
24.2%
10.2%
Q1 25
21.9%
9.0%
Q4 24
24.2%
14.3%
Q3 24
29.8%
13.1%
Q2 24
30.3%
0.6%
Net Margin
AMPH
AMPH
ENPH
ENPH
Q1 26
-2.6%
Q4 25
13.3%
11.3%
Q3 25
9.0%
16.2%
Q2 25
17.8%
10.2%
Q1 25
14.8%
8.3%
Q4 24
20.4%
16.2%
Q3 24
21.1%
12.0%
Q2 24
20.8%
3.6%
EPS (diluted)
AMPH
AMPH
ENPH
ENPH
Q1 26
$-0.06
Q4 25
$0.51
$0.29
Q3 25
$0.37
$0.50
Q2 25
$0.64
$0.28
Q1 25
$0.51
$0.22
Q4 24
$0.74
$0.46
Q3 24
$0.78
$0.33
Q2 24
$0.73
$0.08

Balance Sheet & Financial Strength

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

Metric
AMPH
AMPH
ENPH
ENPH
Cash + ST InvestmentsLiquidity on hand
$282.8M
$497.5M
Total DebtLower is stronger
$608.7M
Stockholders' EquityBook value
$788.8M
$1.1B
Total Assets
$1.6B
$2.7B
Debt / EquityLower = less leverage
0.77×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMPH
AMPH
ENPH
ENPH
Q1 26
$497.5M
Q4 25
$282.8M
$1.5B
Q3 25
$276.2M
$1.5B
Q2 25
$231.8M
$1.5B
Q1 25
$236.9M
$1.5B
Q4 24
$221.6M
$1.6B
Q3 24
$250.5M
$1.8B
Q2 24
$217.8M
$1.6B
Total Debt
AMPH
AMPH
ENPH
ENPH
Q1 26
Q4 25
$608.7M
$1.2B
Q3 25
$608.6M
$1.2B
Q2 25
$607.7M
$1.2B
Q1 25
$603.9M
$1.2B
Q4 24
$601.6M
$1.3B
Q3 24
$596.4M
$1.3B
Q2 24
$586.9M
$1.3B
Stockholders' Equity
AMPH
AMPH
ENPH
ENPH
Q1 26
$1.1B
Q4 25
$788.8M
$1.1B
Q3 25
$776.7M
$995.0M
Q2 25
$757.5M
$880.6M
Q1 25
$751.3M
$810.7M
Q4 24
$732.3M
$833.0M
Q3 24
$727.7M
$931.4M
Q2 24
$713.3M
$884.5M
Total Assets
AMPH
AMPH
ENPH
ENPH
Q1 26
$2.7B
Q4 25
$1.6B
$3.5B
Q3 25
$1.7B
$3.3B
Q2 25
$1.6B
$3.2B
Q1 25
$1.6B
$3.1B
Q4 24
$1.6B
$3.2B
Q3 24
$1.5B
$3.3B
Q2 24
$1.5B
$3.2B
Debt / Equity
AMPH
AMPH
ENPH
ENPH
Q1 26
Q4 25
0.77×
1.11×
Q3 25
0.78×
1.21×
Q2 25
0.80×
1.37×
Q1 25
0.80×
1.48×
Q4 24
0.82×
1.56×
Q3 24
0.82×
1.40×
Q2 24
0.82×
1.47×

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
ENPH
ENPH
Operating Cash FlowLast quarter
$32.9M
$102.9M
Free Cash FlowOCF − Capex
$24.6M
$83.0M
FCF MarginFCF / Revenue
13.4%
29.3%
Capex IntensityCapex / Revenue
4.5%
Cash ConversionOCF / Net Profit
1.35×
TTM Free Cash FlowTrailing 4 quarters
$121.2M
$145.1M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMPH
AMPH
ENPH
ENPH
Q1 26
$102.9M
Q4 25
$32.9M
$47.6M
Q3 25
$52.6M
$13.9M
Q2 25
$35.6M
$26.6M
Q1 25
$35.1M
$48.4M
Q4 24
$29.0M
$167.3M
Q3 24
$60.0M
$170.1M
Q2 24
$69.1M
$127.1M
Free Cash Flow
AMPH
AMPH
ENPH
ENPH
Q1 26
$83.0M
Q4 25
$24.6M
$37.8M
Q3 25
$47.2M
$5.9M
Q2 25
$25.0M
$18.4M
Q1 25
$24.4M
$33.8M
Q4 24
$16.6M
$159.2M
Q3 24
$46.2M
$161.6M
Q2 24
$63.1M
$117.4M
FCF Margin
AMPH
AMPH
ENPH
ENPH
Q1 26
29.3%
Q4 25
13.4%
11.0%
Q3 25
24.6%
1.4%
Q2 25
14.3%
5.1%
Q1 25
14.3%
9.5%
Q4 24
8.9%
41.6%
Q3 24
24.1%
42.4%
Q2 24
34.6%
38.7%
Capex Intensity
AMPH
AMPH
ENPH
ENPH
Q1 26
Q4 25
4.5%
2.8%
Q3 25
2.8%
2.0%
Q2 25
6.1%
2.3%
Q1 25
6.3%
4.1%
Q4 24
6.7%
2.1%
Q3 24
7.2%
2.2%
Q2 24
3.3%
3.2%
Cash Conversion
AMPH
AMPH
ENPH
ENPH
Q1 26
Q4 25
1.35×
1.23×
Q3 25
3.03×
0.21×
Q2 25
1.15×
0.72×
Q1 25
1.39×
1.63×
Q4 24
0.76×
2.69×
Q3 24
1.48×
3.72×
Q2 24
1.82×
11.73×

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%

ENPH
ENPH

Segment breakdown not available.

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