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Side-by-side financial comparison of 908 Devices Inc. (MASS) and Zeo Energy Corp. (ZEO). Click either name above to swap in a different company.

Zeo Energy Corp. is the larger business by last-quarter revenue ($18.6M vs $17.4M, roughly 1.1× 908 Devices Inc.). 908 Devices Inc. runs the higher net margin — 24.0% vs -10.8%, a 34.8% gap on every dollar of revenue. On growth, 908 Devices Inc. posted the faster year-over-year revenue change (21.2% vs -0.4%). Zeo Energy Corp. produced more free cash flow last quarter ($2.3M vs $1.3M). Over the past eight quarters, 908 Devices Inc.'s revenue compounded faster (53.0% CAGR vs -4.0%).

908 Devices Inc. develops and manufactures portable, high-performance mass spectrometry devices and analytical solutions. Its products serve use cases across life science research, biopharmaceutical manufacturing, public safety, forensics, and industrial process monitoring, catering to global customers including research institutions, pharmaceutical firms and government agencies.

MASS vs ZEO — Head-to-Head

Bigger by revenue
ZEO
ZEO
1.1× larger
ZEO
$18.6M
$17.4M
MASS
Growing faster (revenue YoY)
MASS
MASS
+21.6% gap
MASS
21.2%
-0.4%
ZEO
Higher net margin
MASS
MASS
34.8% more per $
MASS
24.0%
-10.8%
ZEO
More free cash flow
ZEO
ZEO
$952.8K more FCF
ZEO
$2.3M
$1.3M
MASS
Faster 2-yr revenue CAGR
MASS
MASS
Annualised
MASS
53.0%
-4.0%
ZEO

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
MASS
MASS
ZEO
ZEO
Revenue
$17.4M
$18.6M
Net Profit
$4.2M
$-2.0M
Gross Margin
52.7%
Operating Margin
17.8%
-11.8%
Net Margin
24.0%
-10.8%
Revenue YoY
21.2%
-0.4%
Net Profit YoY
121.5%
-360.9%
EPS (diluted)
$0.09

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
MASS
MASS
ZEO
ZEO
Q4 25
$17.4M
$18.6M
Q3 25
$14.0M
$23.9M
Q2 25
$13.0M
$18.1M
Q1 25
$11.8M
$8.8M
Q4 24
$14.3M
$18.6M
Q3 24
$14.5M
$19.7M
Q2 24
$11.5M
$14.8M
Q1 24
$7.4M
$20.1M
Net Profit
MASS
MASS
ZEO
ZEO
Q4 25
$4.2M
$-2.0M
Q3 25
$-15.0M
$-3.2M
Q2 25
$-13.3M
$-2.4M
Q1 25
$43.6M
$-6.4M
Q4 24
$-19.4M
$-435.3K
Q3 24
$-29.3M
$-424.3K
Q2 24
$-12.5M
$-277.8K
Q1 24
$-10.9M
$-1.5M
Gross Margin
MASS
MASS
ZEO
ZEO
Q4 25
52.7%
Q3 25
52.5%
57.9%
Q2 25
48.9%
59.8%
Q1 25
47.0%
99.3%
Q4 24
46.5%
Q3 24
53.6%
50.2%
Q2 24
53.8%
52.3%
Q1 24
52.4%
Operating Margin
MASS
MASS
ZEO
ZEO
Q4 25
17.8%
-11.8%
Q3 25
-116.6%
-8.3%
Q2 25
-116.3%
-15.8%
Q1 25
-93.6%
-153.8%
Q4 24
-116.8%
-6.0%
Q3 24
-168.7%
-15.2%
Q2 24
-74.5%
-18.0%
Q1 24
-102.5%
-20.1%
Net Margin
MASS
MASS
ZEO
ZEO
Q4 25
24.0%
-10.8%
Q3 25
-107.0%
-13.5%
Q2 25
-102.1%
-13.3%
Q1 25
370.2%
-72.4%
Q4 24
-135.6%
-2.3%
Q3 24
-201.8%
-2.2%
Q2 24
-109.5%
-1.9%
Q1 24
-147.1%
-7.6%
EPS (diluted)
MASS
MASS
ZEO
ZEO
Q4 25
$0.09
Q3 25
$-0.41
Q2 25
$-0.37
Q1 25
$1.23
$-0.48
Q4 24
$-0.58
$1.11
Q3 24
$-0.84
$-0.08
Q2 24
$-0.37
$0.03
Q1 24
$-0.33
$-1.54

Balance Sheet & Financial Strength

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

Metric
MASS
MASS
ZEO
ZEO
Cash + ST InvestmentsLiquidity on hand
$113.0M
$6.1M
Total DebtLower is stronger
$79.1K
Stockholders' EquityBook value
$143.7M
$5.3M
Total Assets
$190.1M
$56.9M
Debt / EquityLower = less leverage
0.01×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MASS
MASS
ZEO
ZEO
Q4 25
$113.0M
$6.1M
Q3 25
$112.1M
$3.9M
Q2 25
$118.6M
$68.7K
Q1 25
$124.3M
$2.9M
Q4 24
$69.6M
$5.6M
Q3 24
$71.7M
$4.3M
Q2 24
$77.4M
$5.3M
Q1 24
$134.2M
Total Debt
MASS
MASS
ZEO
ZEO
Q4 25
$79.1K
Q3 25
$84.6K
Q2 25
$642.8K
Q1 25
$715.4K
Q4 24
$787.7K
Q3 24
$858.6K
Q2 24
$1.6M
Q1 24
$748.8K
Stockholders' Equity
MASS
MASS
ZEO
ZEO
Q4 25
$143.7M
$5.3M
Q3 25
$136.3M
$-1.7M
Q2 25
$148.8M
$-59.4M
Q1 25
$159.4M
$-23.1M
Q4 24
$114.6M
$-88.9M
Q3 24
$131.0M
$-39.3M
Q2 24
$156.4M
$-53.0M
Q1 24
$156.9M
$-173.0M
Total Assets
MASS
MASS
ZEO
ZEO
Q4 25
$190.1M
$56.9M
Q3 25
$190.9M
$58.5M
Q2 25
$191.7M
$46.2M
Q1 25
$196.0M
$47.4M
Q4 24
$159.5M
$61.0M
Q3 24
$178.3M
$47.1M
Q2 24
$208.8M
$49.1M
Q1 24
$189.8M
$50.1M
Debt / Equity
MASS
MASS
ZEO
ZEO
Q4 25
0.01×
Q3 25
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24

Cash Flow & Capital Efficiency

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

Metric
MASS
MASS
ZEO
ZEO
Operating Cash FlowLast quarter
$1.3M
$2.4M
Free Cash FlowOCF − Capex
$1.3M
$2.3M
FCF MarginFCF / Revenue
7.6%
12.2%
Capex IntensityCapex / Revenue
0.0%
0.9%
Cash ConversionOCF / Net Profit
0.32×
TTM Free Cash FlowTrailing 4 quarters
$-24.7M
$-9.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MASS
MASS
ZEO
ZEO
Q4 25
$1.3M
$2.4M
Q3 25
$-4.2M
$-6.6M
Q2 25
$-5.8M
$-2.3M
Q1 25
$-15.0M
$-2.3M
Q4 24
$-2.2M
$3.5M
Q3 24
$-5.6M
$162.2K
Q2 24
$-13.0M
$-2.2M
Q1 24
$-9.4M
$-10.2M
Free Cash Flow
MASS
MASS
ZEO
ZEO
Q4 25
$1.3M
$2.3M
Q3 25
$-4.9M
$-6.8M
Q2 25
$-5.9M
$-2.7M
Q1 25
$-15.2M
$-2.6M
Q4 24
$-2.4M
$3.4M
Q3 24
$-5.8M
$116.5K
Q2 24
$-13.7M
$-2.3M
Q1 24
$-10.3M
$-10.4M
FCF Margin
MASS
MASS
ZEO
ZEO
Q4 25
7.6%
12.2%
Q3 25
-34.9%
-28.6%
Q2 25
-45.3%
-15.0%
Q1 25
-128.9%
-30.0%
Q4 24
-17.0%
18.2%
Q3 24
-39.7%
0.6%
Q2 24
-119.4%
-15.6%
Q1 24
-138.2%
-51.5%
Capex Intensity
MASS
MASS
ZEO
ZEO
Q4 25
0.0%
0.9%
Q3 25
4.9%
1.0%
Q2 25
0.9%
2.4%
Q1 25
1.4%
4.2%
Q4 24
1.3%
0.5%
Q3 24
1.1%
0.2%
Q2 24
5.6%
0.7%
Q1 24
12.2%
1.1%
Cash Conversion
MASS
MASS
ZEO
ZEO
Q4 25
0.32×
Q3 25
Q2 25
Q1 25
-0.34×
Q4 24
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

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

Revenue Breakdown by Segment

MASS
MASS

Products$14.3M82%
Services$3.0M18%

ZEO
ZEO

Nonrelated Party$18.1M98%
Related Party$432.1K2%

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