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Side-by-side financial comparison of Amprius Technologies, Inc. (AMPX) and Eos Energy Enterprises, Inc. (EOSE). Click either name above to swap in a different company.

Eos Energy Enterprises, Inc. is the larger business by last-quarter revenue ($58.0M vs $25.2M, roughly 2.3× Amprius Technologies, Inc.). Amprius Technologies, Inc. runs the higher net margin — -96.7% vs -207.7%, a 111.0% gap on every dollar of revenue. On growth, Eos Energy Enterprises, Inc. posted the faster year-over-year revenue change (699.6% vs 137.4%). Amprius Technologies, Inc. produced more free cash flow last quarter ($-5.9M vs $-75.2M). Over the past eight quarters, Amprius Technologies, Inc.'s revenue compounded faster (228.7% CAGR vs 196.4%).

Amprius Technologies, Inc. develops and manufactures high-energy density lithium-ion batteries using proprietary silicon anode technology. It serves aerospace, defense, electric mobility, and portable electronics segments, offering products with longer runtime and faster charging than conventional alternatives.

Eos Energy Enterprises, Inc. is an energy storage solutions provider that designs, produces and deploys safe long-duration zinc-based battery systems. It serves utility, commercial, industrial and microgrid customers across North America, Europe and Asia, supporting grid stability and renewable energy integration.

AMPX vs EOSE — Head-to-Head

Bigger by revenue
EOSE
EOSE
2.3× larger
EOSE
$58.0M
$25.2M
AMPX
Growing faster (revenue YoY)
EOSE
EOSE
+562.3% gap
EOSE
699.6%
137.4%
AMPX
Higher net margin
AMPX
AMPX
111.0% more per $
AMPX
-96.7%
-207.7%
EOSE
More free cash flow
AMPX
AMPX
$69.4M more FCF
AMPX
$-5.9M
$-75.2M
EOSE
Faster 2-yr revenue CAGR
AMPX
AMPX
Annualised
AMPX
228.7%
196.4%
EOSE

Income Statement — Q4 2025 vs Q4 2025

Metric
AMPX
AMPX
EOSE
EOSE
Revenue
$25.2M
$58.0M
Net Profit
$-24.4M
$-120.5M
Gross Margin
23.6%
-93.8%
Operating Margin
-100.9%
-140.1%
Net Margin
-96.7%
-207.7%
Revenue YoY
137.4%
699.6%
Net Profit YoY
-113.6%
55.1%
EPS (diluted)
$-0.19
$-0.53

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
AMPX
AMPX
EOSE
EOSE
Q4 25
$25.2M
$58.0M
Q3 25
$21.4M
$30.5M
Q2 25
$15.1M
$15.2M
Q1 25
$11.3M
$10.5M
Q4 24
$10.6M
$7.3M
Q3 24
$7.9M
$854.0K
Q2 24
$3.3M
$898.0K
Q1 24
$2.3M
$6.6M
Net Profit
AMPX
AMPX
EOSE
EOSE
Q4 25
$-24.4M
$-120.5M
Q3 25
$-3.9M
$-641.4M
Q2 25
$-6.4M
$-222.9M
Q1 25
$-9.4M
$15.1M
Q4 24
$-11.4M
$-268.1M
Q3 24
$-10.8M
$-342.9M
Q2 24
$-12.5M
$-28.2M
Q1 24
$-9.9M
$-46.7M
Gross Margin
AMPX
AMPX
EOSE
EOSE
Q4 25
23.6%
-93.8%
Q3 25
15.5%
-111.2%
Q2 25
8.9%
-203.2%
Q1 25
-20.9%
-234.7%
Q4 24
-21.2%
-324.0%
Q3 24
-64.9%
-2916.9%
Q2 24
-195.2%
-1472.5%
Q1 24
-190.3%
-327.6%
Operating Margin
AMPX
AMPX
EOSE
EOSE
Q4 25
-100.9%
-140.1%
Q3 25
-21.9%
-200.6%
Q2 25
-45.2%
-419.1%
Q1 25
-85.7%
-506.2%
Q4 24
-110.6%
-712.8%
Q3 24
-143.3%
-6244.3%
Q2 24
-386.6%
-3233.5%
Q1 24
-441.7%
-623.2%
Net Margin
AMPX
AMPX
EOSE
EOSE
Q4 25
-96.7%
-207.7%
Q3 25
-18.2%
-2102.1%
Q2 25
-42.3%
-1463.2%
Q1 25
-83.0%
144.7%
Q4 24
-107.4%
-3696.7%
Q3 24
-138.1%
-40148.2%
Q2 24
-374.2%
-3137.2%
Q1 24
-423.2%
-707.6%
EPS (diluted)
AMPX
AMPX
EOSE
EOSE
Q4 25
$-0.19
$-0.53
Q3 25
$-0.03
$-4.91
Q2 25
$-0.05
$-1.05
Q1 25
$-0.08
$-0.20
Q4 24
$-0.11
$-2.30
Q3 24
$-0.10
$-1.77
Q2 24
$-0.13
$-0.25
Q1 24
$-0.11
$-0.23

Balance Sheet & Financial Strength

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

Metric
AMPX
AMPX
EOSE
EOSE
Cash + ST InvestmentsLiquidity on hand
$90.5M
$568.0M
Total DebtLower is stronger
$813.3M
Stockholders' EquityBook value
$103.8M
$-2.2B
Total Assets
$156.9M
$885.2M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMPX
AMPX
EOSE
EOSE
Q4 25
$90.5M
$568.0M
Q3 25
$73.2M
$58.7M
Q2 25
$54.2M
$120.2M
Q1 25
$48.4M
$82.6M
Q4 24
$55.2M
$74.3M
Q3 24
$35.0M
$23.0M
Q2 24
$46.4M
$52.5M
Q1 24
$39.0M
$31.8M
Total Debt
AMPX
AMPX
EOSE
EOSE
Q4 25
$813.3M
Q3 25
$448.5M
Q2 25
$445.3M
Q1 25
$325.5M
Q4 24
$316.9M
Q3 24
$187.4M
Q2 24
$153.3M
Q1 24
$205.6M
Stockholders' Equity
AMPX
AMPX
EOSE
EOSE
Q4 25
$103.8M
$-2.2B
Q3 25
$103.2M
$-2.3B
Q2 25
$76.7M
$-1.1B
Q1 25
$70.4M
$-942.2M
Q4 24
$69.5M
$-1.1B
Q3 24
$56.0M
$-573.8M
Q2 24
$65.1M
$-190.8M
Q1 24
$59.9M
$-147.7M
Total Assets
AMPX
AMPX
EOSE
EOSE
Q4 25
$156.9M
$885.2M
Q3 25
$156.5M
$328.2M
Q2 25
$123.0M
$361.0M
Q1 25
$118.5M
$263.3M
Q4 24
$121.1M
$260.3M
Q3 24
$104.2M
$216.8M
Q2 24
$112.8M
$248.8M
Q1 24
$104.7M
$155.7M

Cash Flow & Capital Efficiency

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

Metric
AMPX
AMPX
EOSE
EOSE
Operating Cash FlowLast quarter
$-3.5M
$-50.3M
Free Cash FlowOCF − Capex
$-5.9M
$-75.2M
FCF MarginFCF / Revenue
-23.2%
-129.7%
Capex IntensityCapex / Revenue
9.3%
43.1%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-35.5M
$-265.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMPX
AMPX
EOSE
EOSE
Q4 25
$-3.5M
$-50.3M
Q3 25
$-9.2M
$-65.9M
Q2 25
$-4.3M
$-66.1M
Q1 25
$-14.1M
$-28.9M
Q4 24
$-6.1M
$-42.7M
Q3 24
$-9.5M
$-44.4M
Q2 24
$-8.0M
$-26.3M
Q1 24
$-9.8M
$-40.5M
Free Cash Flow
AMPX
AMPX
EOSE
EOSE
Q4 25
$-5.9M
$-75.2M
Q3 25
$-9.7M
$-82.7M
Q2 25
$-5.0M
$-73.2M
Q1 25
$-15.0M
$-33.8M
Q4 24
$-9.7M
$-55.8M
Q3 24
$-10.9M
$-54.2M
Q2 24
$-9.6M
$-32.6M
Q1 24
$-13.7M
$-44.5M
FCF Margin
AMPX
AMPX
EOSE
EOSE
Q4 25
-23.2%
-129.7%
Q3 25
-45.1%
-271.1%
Q2 25
-33.1%
-480.2%
Q1 25
-133.3%
-323.6%
Q4 24
-91.4%
-769.1%
Q3 24
-138.3%
-6347.5%
Q2 24
-285.9%
-3628.3%
Q1 24
-585.4%
-674.4%
Capex Intensity
AMPX
AMPX
EOSE
EOSE
Q4 25
9.3%
43.1%
Q3 25
1.9%
55.2%
Q2 25
4.8%
46.2%
Q1 25
8.1%
47.0%
Q4 24
34.1%
180.6%
Q3 24
17.0%
1143.2%
Q2 24
48.0%
695.9%
Q1 24
166.8%
61.2%
Cash Conversion
AMPX
AMPX
EOSE
EOSE
Q4 25
Q3 25
Q2 25
Q1 25
-1.91×
Q4 24
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

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

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