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Side-by-side financial comparison of AXCELIS TECHNOLOGIES INC (ACLS) and TransMedics Group, Inc. (TMDX). Click either name above to swap in a different company.

AXCELIS TECHNOLOGIES INC is the larger business by last-quarter revenue ($238.3M vs $160.8M, roughly 1.5× TransMedics Group, Inc.). TransMedics Group, Inc. runs the higher net margin — 65.6% vs 14.4%, a 51.2% gap on every dollar of revenue. On growth, TransMedics Group, Inc. posted the faster year-over-year revenue change (32.2% vs -5.6%). TransMedics Group, Inc. produced more free cash flow last quarter ($19.0M vs $-8.9M). Over the past eight quarters, TransMedics Group, Inc.'s revenue compounded faster (28.8% CAGR vs -2.8%).

Axcelis Technologies, Inc. is an American company engaging in the design, manufacture, and servicing of capital equipment for the semiconductor manufacturing industry worldwide. It produces ion implantation systems, including high and medium current implanters, and high energy implanters, and curing systems used in the fabrication of semiconductor chips. The company was incorporated in 1995 and is headquartered in Beverly, Massachusetts, United States.

TransMedics Group, Inc. develops and commercializes innovative medical technologies for organ transplantation. Its flagship Organ Care System keeps donor organs viable during transport, improving transplant outcomes for heart, lung, liver and kidney recipients. It serves transplant centers and organ procurement organizations across North America, Europe and Asia-Pacific.

ACLS vs TMDX — Head-to-Head

Bigger by revenue
ACLS
ACLS
1.5× larger
ACLS
$238.3M
$160.8M
TMDX
Growing faster (revenue YoY)
TMDX
TMDX
+37.8% gap
TMDX
32.2%
-5.6%
ACLS
Higher net margin
TMDX
TMDX
51.2% more per $
TMDX
65.6%
14.4%
ACLS
More free cash flow
TMDX
TMDX
$27.9M more FCF
TMDX
$19.0M
$-8.9M
ACLS
Faster 2-yr revenue CAGR
TMDX
TMDX
Annualised
TMDX
28.8%
-2.8%
ACLS

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ACLS
ACLS
TMDX
TMDX
Revenue
$238.3M
$160.8M
Net Profit
$34.3M
$105.4M
Gross Margin
47.0%
58.1%
Operating Margin
15.2%
13.2%
Net Margin
14.4%
65.6%
Revenue YoY
-5.6%
32.2%
Net Profit YoY
-31.3%
1436.9%
EPS (diluted)
$1.11
$2.59

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
ACLS
ACLS
TMDX
TMDX
Q4 25
$238.3M
$160.8M
Q3 25
$213.6M
$143.8M
Q2 25
$194.5M
$157.4M
Q1 25
$192.6M
$143.5M
Q4 24
$252.4M
$121.6M
Q3 24
$256.6M
$108.8M
Q2 24
$256.5M
$114.3M
Q1 24
$252.4M
$96.8M
Net Profit
ACLS
ACLS
TMDX
TMDX
Q4 25
$34.3M
$105.4M
Q3 25
$26.0M
$24.3M
Q2 25
$31.4M
$34.9M
Q1 25
$28.6M
$25.7M
Q4 24
$50.0M
$6.9M
Q3 24
$48.6M
$4.2M
Q2 24
$50.9M
$12.2M
Q1 24
$51.6M
$12.2M
Gross Margin
ACLS
ACLS
TMDX
TMDX
Q4 25
47.0%
58.1%
Q3 25
41.6%
58.8%
Q2 25
44.9%
61.4%
Q1 25
46.1%
61.5%
Q4 24
46.0%
59.2%
Q3 24
42.9%
55.9%
Q2 24
43.8%
60.6%
Q1 24
46.0%
61.9%
Operating Margin
ACLS
ACLS
TMDX
TMDX
Q4 25
15.2%
13.2%
Q3 25
11.7%
16.2%
Q2 25
14.9%
23.2%
Q1 25
15.1%
19.1%
Q4 24
21.6%
7.1%
Q3 24
18.3%
3.6%
Q2 24
20.6%
10.9%
Q1 24
22.4%
12.8%
Net Margin
ACLS
ACLS
TMDX
TMDX
Q4 25
14.4%
65.6%
Q3 25
12.2%
16.9%
Q2 25
16.1%
22.2%
Q1 25
14.8%
17.9%
Q4 24
19.8%
5.6%
Q3 24
18.9%
3.9%
Q2 24
19.8%
10.7%
Q1 24
20.4%
12.6%
EPS (diluted)
ACLS
ACLS
TMDX
TMDX
Q4 25
$1.11
$2.59
Q3 25
$0.83
$0.66
Q2 25
$0.98
$0.92
Q1 25
$0.88
$0.70
Q4 24
$1.54
$0.19
Q3 24
$1.49
$0.12
Q2 24
$1.55
$0.35
Q1 24
$1.57
$0.35

Balance Sheet & Financial Strength

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

Metric
ACLS
ACLS
TMDX
TMDX
Cash + ST InvestmentsLiquidity on hand
$374.3M
Total DebtLower is stronger
Stockholders' EquityBook value
$1.0B
$473.1M
Total Assets
$1.4B
$1.1B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ACLS
ACLS
TMDX
TMDX
Q4 25
$374.3M
Q3 25
$449.6M
Q2 25
$549.8M
Q1 25
$587.1M
Q4 24
$571.3M
Q3 24
$579.4M
$330.1M
Q2 24
$548.3M
$362.8M
Q1 24
$530.2M
$350.2M
Stockholders' Equity
ACLS
ACLS
TMDX
TMDX
Q4 25
$1.0B
$473.1M
Q3 25
$1.0B
$355.2M
Q2 25
$1.0B
$318.1M
Q1 25
$1.0B
$266.3M
Q4 24
$1.0B
$228.6M
Q3 24
$975.6M
$209.9M
Q2 24
$934.9M
$189.9M
Q1 24
$901.7M
$159.5M
Total Assets
ACLS
ACLS
TMDX
TMDX
Q4 25
$1.4B
$1.1B
Q3 25
$1.4B
$946.0M
Q2 25
$1.3B
$890.5M
Q1 25
$1.3B
$837.5M
Q4 24
$1.3B
$804.1M
Q3 24
$1.3B
$785.6M
Q2 24
$1.3B
$758.6M
Q1 24
$1.3B
$723.8M

Cash Flow & Capital Efficiency

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

Metric
ACLS
ACLS
TMDX
TMDX
Operating Cash FlowLast quarter
$-6.6M
$34.5M
Free Cash FlowOCF − Capex
$-8.9M
$19.0M
FCF MarginFCF / Revenue
-3.7%
11.8%
Capex IntensityCapex / Revenue
1.0%
9.7%
Cash ConversionOCF / Net Profit
-0.19×
0.33×
TTM Free Cash FlowTrailing 4 quarters
$107.0M
$133.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ACLS
ACLS
TMDX
TMDX
Q4 25
$-6.6M
$34.5M
Q3 25
$45.4M
$69.6M
Q2 25
$39.7M
$91.6M
Q1 25
$39.8M
$-2.9M
Q4 24
$12.8M
$19.7M
Q3 24
$45.7M
$6.9M
Q2 24
$40.1M
$25.7M
Q1 24
$42.2M
$-3.4M
Free Cash Flow
ACLS
ACLS
TMDX
TMDX
Q4 25
$-8.9M
$19.0M
Q3 25
$43.3M
$61.9M
Q2 25
$37.7M
$82.5M
Q1 25
$34.8M
$-29.9M
Q4 24
$8.1M
$6.1M
Q3 24
$41.8M
$-41.3M
Q2 24
$38.1M
$2.0M
Q1 24
$40.6M
$-47.6M
FCF Margin
ACLS
ACLS
TMDX
TMDX
Q4 25
-3.7%
11.8%
Q3 25
20.3%
43.1%
Q2 25
19.4%
52.4%
Q1 25
18.1%
-20.8%
Q4 24
3.2%
5.0%
Q3 24
16.3%
-38.0%
Q2 24
14.8%
1.7%
Q1 24
16.1%
-49.2%
Capex Intensity
ACLS
ACLS
TMDX
TMDX
Q4 25
1.0%
9.7%
Q3 25
0.9%
5.3%
Q2 25
1.0%
5.8%
Q1 25
2.6%
18.8%
Q4 24
1.8%
11.2%
Q3 24
1.5%
44.3%
Q2 24
0.8%
20.8%
Q1 24
0.6%
45.6%
Cash Conversion
ACLS
ACLS
TMDX
TMDX
Q4 25
-0.19×
0.33×
Q3 25
1.75×
2.86×
Q2 25
1.27×
2.62×
Q1 25
1.39×
-0.11×
Q4 24
0.26×
2.87×
Q3 24
0.94×
1.63×
Q2 24
0.79×
2.11×
Q1 24
0.82×
-0.28×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ACLS
ACLS

Products$224.6M94%
Services$13.7M6%

TMDX
TMDX

Liver Product$127.0M79%
Heart Product$26.0M16%
Other$5.9M4%
Lung Product$1.9M1%

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