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Side-by-side financial comparison of CSG SYSTEMS INTERNATIONAL INC (CSGS) and Esperion Therapeutics, Inc. (ESPR). Click either name above to swap in a different company.

CSG SYSTEMS INTERNATIONAL INC is the larger business by last-quarter revenue ($323.1M vs $168.4M, roughly 1.9× Esperion Therapeutics, Inc.). On growth, Esperion Therapeutics, Inc. posted the faster year-over-year revenue change (143.7% vs 2.0%). Over the past eight quarters, Esperion Therapeutics, Inc.'s revenue compounded faster (10.6% CAGR vs 4.6%).

CSG Holding Limited, formerly China Southern Glass Holding Limited, is the largest architectural glass manufacturer in China. It is involved in manufacturing and selling glass products, such as float glass, architectural glass, display glass, automotive glass, coated glass, mirrors, color filter glass, solar glass and conservation glass.

Esperion Therapeutics, Inc. is a publicly traded American pharmaceutical company focused on the development of bempedoic acid, an orally available small molecule designed to lower elevated levels of LDL-C. The company is headquartered in Ann Arbor, Michigan.

CSGS vs ESPR — Head-to-Head

Bigger by revenue
CSGS
CSGS
1.9× larger
CSGS
$323.1M
$168.4M
ESPR
Growing faster (revenue YoY)
ESPR
ESPR
+141.7% gap
ESPR
143.7%
2.0%
CSGS
Faster 2-yr revenue CAGR
ESPR
ESPR
Annualised
ESPR
10.6%
4.6%
CSGS

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
CSGS
CSGS
ESPR
ESPR
Revenue
$323.1M
$168.4M
Net Profit
$7.0M
Gross Margin
50.0%
Operating Margin
9.0%
50.6%
Net Margin
2.2%
Revenue YoY
2.0%
143.7%
Net Profit YoY
-79.7%
EPS (diluted)
$0.24
$0.32

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
CSGS
CSGS
ESPR
ESPR
Q4 25
$323.1M
$168.4M
Q3 25
$303.6M
$87.3M
Q2 25
$297.1M
$82.4M
Q1 25
$299.5M
$65.0M
Q4 24
$316.7M
$69.1M
Q3 24
$295.1M
$51.6M
Q2 24
$290.3M
$73.8M
Q1 24
$295.1M
$137.7M
Net Profit
CSGS
CSGS
ESPR
ESPR
Q4 25
$7.0M
Q3 25
$20.5M
$-31.3M
Q2 25
$12.3M
$-12.7M
Q1 25
$16.1M
$-40.5M
Q4 24
$34.5M
Q3 24
$19.1M
$-29.5M
Q2 24
$13.8M
$-61.9M
Q1 24
$19.5M
$61.0M
Gross Margin
CSGS
CSGS
ESPR
ESPR
Q4 25
50.0%
Q3 25
48.1%
Q2 25
49.5%
Q1 25
48.4%
Q4 24
51.3%
Q3 24
49.4%
Q2 24
47.3%
Q1 24
46.5%
Operating Margin
CSGS
CSGS
ESPR
ESPR
Q4 25
9.0%
50.6%
Q3 25
10.0%
-11.4%
Q2 25
10.0%
8.6%
Q1 25
9.8%
-34.0%
Q4 24
13.4%
-6.4%
Q3 24
10.8%
-31.0%
Q2 24
8.8%
3.5%
Q1 24
10.8%
52.5%
Net Margin
CSGS
CSGS
ESPR
ESPR
Q4 25
2.2%
Q3 25
6.7%
-35.9%
Q2 25
4.1%
-15.4%
Q1 25
5.4%
-62.2%
Q4 24
10.9%
Q3 24
6.5%
-57.2%
Q2 24
4.8%
-83.9%
Q1 24
6.6%
44.3%
EPS (diluted)
CSGS
CSGS
ESPR
ESPR
Q4 25
$0.24
$0.32
Q3 25
$0.73
$-0.16
Q2 25
$0.44
$-0.06
Q1 25
$0.57
$-0.21
Q4 24
$1.20
$-0.14
Q3 24
$0.67
$-0.15
Q2 24
$0.48
$-0.33
Q1 24
$0.68
$0.34

Balance Sheet & Financial Strength

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

Metric
CSGS
CSGS
ESPR
ESPR
Cash + ST InvestmentsLiquidity on hand
$180.0M
$167.9M
Total DebtLower is stronger
$539.5M
Stockholders' EquityBook value
$283.7M
$-302.0M
Total Assets
$1.5B
$465.9M
Debt / EquityLower = less leverage
1.90×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CSGS
CSGS
ESPR
ESPR
Q4 25
$180.0M
$167.9M
Q3 25
$158.4M
$92.4M
Q2 25
$145.9M
$86.1M
Q1 25
$136.0M
$114.6M
Q4 24
$161.8M
$144.8M
Q3 24
$118.4M
$144.7M
Q2 24
$110.4M
$189.3M
Q1 24
$120.8M
$226.6M
Total Debt
CSGS
CSGS
ESPR
ESPR
Q4 25
$539.5M
Q3 25
$538.6M
Q2 25
$537.8M
Q1 25
$537.6M
Q4 24
$538.5M
Q3 24
$539.5M
Q2 24
$540.5M
Q1 24
$541.5M
Stockholders' Equity
CSGS
CSGS
ESPR
ESPR
Q4 25
$283.7M
$-302.0M
Q3 25
$289.5M
$-451.4M
Q2 25
$290.7M
$-433.5M
Q1 25
$283.1M
$-426.2M
Q4 24
$282.6M
$-388.7M
Q3 24
$288.4M
$-370.2M
Q2 24
$273.3M
$-344.2M
Q1 24
$269.3M
$-294.3M
Total Assets
CSGS
CSGS
ESPR
ESPR
Q4 25
$1.5B
$465.9M
Q3 25
$1.5B
$364.0M
Q2 25
$1.4B
$347.1M
Q1 25
$1.4B
$324.0M
Q4 24
$1.5B
$343.8M
Q3 24
$1.4B
$314.1M
Q2 24
$1.4B
$352.3M
Q1 24
$1.3B
$373.1M
Debt / Equity
CSGS
CSGS
ESPR
ESPR
Q4 25
1.90×
Q3 25
1.86×
Q2 25
1.85×
Q1 25
1.90×
Q4 24
1.91×
Q3 24
1.87×
Q2 24
1.98×
Q1 24
2.01×

Cash Flow & Capital Efficiency

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

Metric
CSGS
CSGS
ESPR
ESPR
Operating Cash FlowLast quarter
$59.2M
$45.2M
Free Cash FlowOCF − Capex
$55.8M
FCF MarginFCF / Revenue
17.3%
Capex IntensityCapex / Revenue
1.1%
0.0%
Cash ConversionOCF / Net Profit
8.46×
TTM Free Cash FlowTrailing 4 quarters
$141.4M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CSGS
CSGS
ESPR
ESPR
Q4 25
$59.2M
$45.2M
Q3 25
$47.9M
$-4.3M
Q2 25
$37.3M
$-31.4M
Q1 25
$11.5M
$-22.6M
Q4 24
$82.5M
$-35.0M
Q3 24
$39.5M
$-35.3M
Q2 24
$43.1M
$-7.2M
Q1 24
$-29.4M
$53.8M
Free Cash Flow
CSGS
CSGS
ESPR
ESPR
Q4 25
$55.8M
Q3 25
$43.9M
Q2 25
$34.6M
Q1 25
$7.1M
Q4 24
$76.6M
Q3 24
$32.0M
$-35.5M
Q2 24
$38.8M
$-7.3M
Q1 24
$-34.1M
$53.8M
FCF Margin
CSGS
CSGS
ESPR
ESPR
Q4 25
17.3%
Q3 25
14.5%
Q2 25
11.6%
Q1 25
2.4%
Q4 24
24.2%
Q3 24
10.8%
-68.7%
Q2 24
13.4%
-9.9%
Q1 24
-11.6%
39.0%
Capex Intensity
CSGS
CSGS
ESPR
ESPR
Q4 25
1.1%
0.0%
Q3 25
1.3%
0.0%
Q2 25
0.9%
0.0%
Q1 25
1.5%
0.0%
Q4 24
1.9%
0.0%
Q3 24
2.5%
0.3%
Q2 24
1.5%
0.1%
Q1 24
1.6%
0.1%
Cash Conversion
CSGS
CSGS
ESPR
ESPR
Q4 25
8.46×
Q3 25
2.34×
Q2 25
3.04×
Q1 25
0.71×
Q4 24
2.39×
Q3 24
2.07×
Q2 24
3.12×
Q1 24
-1.51×
0.88×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CSGS
CSGS

Software As A Service And Related Solutions$287.2M89%
License And Service$22.6M7%
Maintenance$13.3M4%

ESPR
ESPR

Collaboration Revenue$124.7M74%
Products$43.7M26%

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