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

Tenable Holdings, Inc. is the larger business by last-quarter revenue ($262.1M vs $183.1M, roughly 1.4× Amphastar Pharmaceuticals, Inc.). Amphastar Pharmaceuticals, Inc. runs the higher net margin — 13.3% vs 0.5%, a 12.8% gap on every dollar of revenue. On growth, Tenable Holdings, Inc. posted the faster year-over-year revenue change (9.6% vs -1.8%). Tenable Holdings, Inc. produced more free cash flow last quarter ($82.6M vs $24.6M). Over the past eight quarters, Tenable Holdings, Inc.'s revenue compounded faster (8.8% 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.

Tenable Holdings, Inc. is a cybersecurity company based in Columbia, Maryland. Its vulnerability scanner software Nessus, developed in 1998, is one of the most widely deployed vulnerability assessment solutions in the cybersecurity industry. As of December 31, 2023, the company had approximately 44,000 customers, including 65% of the Fortune 500.

AMPH vs TENB — Head-to-Head

Bigger by revenue
TENB
TENB
1.4× larger
TENB
$262.1M
$183.1M
AMPH
Growing faster (revenue YoY)
TENB
TENB
+11.4% gap
TENB
9.6%
-1.8%
AMPH
Higher net margin
AMPH
AMPH
12.8% more per $
AMPH
13.3%
0.5%
TENB
More free cash flow
TENB
TENB
$58.0M more FCF
TENB
$82.6M
$24.6M
AMPH
Faster 2-yr revenue CAGR
TENB
TENB
Annualised
TENB
8.8%
3.2%
AMPH

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
AMPH
AMPH
TENB
TENB
Revenue
$183.1M
$262.1M
Net Profit
$24.4M
$1.4M
Gross Margin
46.8%
78.4%
Operating Margin
19.4%
25.0%
Net Margin
13.3%
0.5%
Revenue YoY
-1.8%
9.6%
Net Profit YoY
-35.7%
EPS (diluted)
$0.51
$0.01

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
TENB
TENB
Q1 26
$262.1M
Q4 25
$183.1M
$260.5M
Q3 25
$191.8M
$252.4M
Q2 25
$174.4M
$247.3M
Q1 25
$170.5M
$239.1M
Q4 24
$186.5M
$235.7M
Q3 24
$191.2M
$227.1M
Q2 24
$182.4M
$221.2M
Net Profit
AMPH
AMPH
TENB
TENB
Q1 26
$1.4M
Q4 25
$24.4M
$-737.0K
Q3 25
$17.4M
$2.3M
Q2 25
$31.0M
$-14.7M
Q1 25
$25.3M
$-22.9M
Q4 24
$38.0M
$1.9M
Q3 24
$40.4M
$-9.2M
Q2 24
$37.9M
$-14.6M
Gross Margin
AMPH
AMPH
TENB
TENB
Q1 26
78.4%
Q4 25
46.8%
78.8%
Q3 25
51.4%
77.5%
Q2 25
49.6%
78.0%
Q1 25
50.0%
78.1%
Q4 24
46.5%
78.2%
Q3 24
53.3%
77.8%
Q2 24
52.2%
77.9%
Operating Margin
AMPH
AMPH
TENB
TENB
Q1 26
25.0%
Q4 25
19.4%
3.4%
Q3 25
13.2%
2.8%
Q2 25
24.2%
-3.0%
Q1 25
21.9%
-7.4%
Q4 24
24.2%
5.5%
Q3 24
29.8%
-0.9%
Q2 24
30.3%
-4.0%
Net Margin
AMPH
AMPH
TENB
TENB
Q1 26
0.5%
Q4 25
13.3%
-0.3%
Q3 25
9.0%
0.9%
Q2 25
17.8%
-5.9%
Q1 25
14.8%
-9.6%
Q4 24
20.4%
0.8%
Q3 24
21.1%
-4.1%
Q2 24
20.8%
-6.6%
EPS (diluted)
AMPH
AMPH
TENB
TENB
Q1 26
$0.01
Q4 25
$0.51
$-0.01
Q3 25
$0.37
$0.02
Q2 25
$0.64
$-0.12
Q1 25
$0.51
$-0.19
Q4 24
$0.74
$0.01
Q3 24
$0.78
$-0.08
Q2 24
$0.73
$-0.12

Balance Sheet & Financial Strength

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

Metric
AMPH
AMPH
TENB
TENB
Cash + ST InvestmentsLiquidity on hand
$282.8M
$360.3M
Total DebtLower is stronger
$608.7M
Stockholders' EquityBook value
$788.8M
$248.2M
Total Assets
$1.6B
$1.6B
Debt / EquityLower = less leverage
0.77×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMPH
AMPH
TENB
TENB
Q1 26
$360.3M
Q4 25
$282.8M
$402.2M
Q3 25
$276.2M
$383.6M
Q2 25
$231.8M
$386.5M
Q1 25
$236.9M
$460.3M
Q4 24
$221.6M
$577.2M
Q3 24
$250.5M
$548.4M
Q2 24
$217.8M
$487.0M
Total Debt
AMPH
AMPH
TENB
TENB
Q1 26
Q4 25
$608.7M
Q3 25
$608.6M
Q2 25
$607.7M
Q1 25
$603.9M
Q4 24
$601.6M
Q3 24
$596.4M
Q2 24
$586.9M
Stockholders' Equity
AMPH
AMPH
TENB
TENB
Q1 26
$248.2M
Q4 25
$788.8M
$326.4M
Q3 25
$776.7M
$344.4M
Q2 25
$757.5M
$350.7M
Q1 25
$751.3M
$383.2M
Q4 24
$732.3M
$400.0M
Q3 24
$727.7M
$404.6M
Q2 24
$713.3M
$363.6M
Total Assets
AMPH
AMPH
TENB
TENB
Q1 26
$1.6B
Q4 25
$1.6B
$1.7B
Q3 25
$1.7B
$1.7B
Q2 25
$1.6B
$1.7B
Q1 25
$1.6B
$1.7B
Q4 24
$1.6B
$1.7B
Q3 24
$1.5B
$1.6B
Q2 24
$1.5B
$1.6B
Debt / Equity
AMPH
AMPH
TENB
TENB
Q1 26
Q4 25
0.77×
Q3 25
0.78×
Q2 25
0.80×
Q1 25
0.80×
Q4 24
0.82×
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
TENB
TENB
Operating Cash FlowLast quarter
$32.9M
$88.0M
Free Cash FlowOCF − Capex
$24.6M
$82.6M
FCF MarginFCF / Revenue
13.4%
31.5%
Capex IntensityCapex / Revenue
4.5%
Cash ConversionOCF / Net Profit
1.35×
62.21×
TTM Free Cash FlowTrailing 4 quarters
$121.2M
$256.4M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMPH
AMPH
TENB
TENB
Q1 26
$88.0M
Q4 25
$32.9M
$83.0M
Q3 25
$52.6M
$53.9M
Q2 25
$35.6M
$42.5M
Q1 25
$35.1M
$87.4M
Q4 24
$29.0M
$81.1M
Q3 24
$60.0M
$54.6M
Q2 24
$69.1M
$31.4M
Free Cash Flow
AMPH
AMPH
TENB
TENB
Q1 26
$82.6M
Q4 25
$24.6M
$82.7M
Q3 25
$47.2M
$53.0M
Q2 25
$25.0M
$38.1M
Q1 25
$24.4M
$80.9M
Q4 24
$16.6M
$78.8M
Q3 24
$46.2M
$53.9M
Q2 24
$63.1M
$30.9M
FCF Margin
AMPH
AMPH
TENB
TENB
Q1 26
31.5%
Q4 25
13.4%
31.7%
Q3 25
24.6%
21.0%
Q2 25
14.3%
15.4%
Q1 25
14.3%
33.8%
Q4 24
8.9%
33.4%
Q3 24
24.1%
23.7%
Q2 24
34.6%
14.0%
Capex Intensity
AMPH
AMPH
TENB
TENB
Q1 26
Q4 25
4.5%
0.1%
Q3 25
2.8%
0.3%
Q2 25
6.1%
1.8%
Q1 25
6.3%
2.7%
Q4 24
6.7%
1.0%
Q3 24
7.2%
0.3%
Q2 24
3.3%
0.2%
Cash Conversion
AMPH
AMPH
TENB
TENB
Q1 26
62.21×
Q4 25
1.35×
Q3 25
3.03×
23.83×
Q2 25
1.15×
Q1 25
1.39×
Q4 24
0.76×
43.43×
Q3 24
1.48×
Q2 24
1.82×

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%

TENB
TENB

Subscription revenue$243.2M93%
Perpetual license and maintenance revenue$10.2M4%
Other$8.7M3%

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