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

Amprius Technologies, Inc. produced more free cash flow last quarter ($-5.9M vs $-13.1M). Over the past eight quarters, Amprius Technologies, Inc.'s revenue compounded faster (228.7% CAGR vs -100.0%).

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.

Nuburu, Inc. is an advanced industrial technology firm specializing in the design, manufacturing, and distribution of high-performance blue laser solutions. Its products are primarily applied in industrial scenarios including metal welding, additive manufacturing, and power battery production, serving global clients across the automotive, aerospace, and consumer electronics sectors.

AMPX vs BURU — Head-to-Head

Bigger by revenue
AMPX
AMPX
Infinity× larger
AMPX
$25.2M
$0
BURU
More free cash flow
AMPX
AMPX
$7.3M more FCF
AMPX
$-5.9M
$-13.1M
BURU
Faster 2-yr revenue CAGR
AMPX
AMPX
Annualised
AMPX
228.7%
-100.0%
BURU

Income Statement — Q4 2025 vs Q4 2025

Metric
AMPX
AMPX
BURU
BURU
Revenue
$25.2M
$0
Net Profit
$-24.4M
$-27.8M
Gross Margin
23.6%
Operating Margin
-100.9%
Net Margin
-96.7%
Revenue YoY
137.4%
Net Profit YoY
-113.6%
-135.2%
EPS (diluted)
$-0.19
$-1.59

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
AMPX
AMPX
BURU
BURU
Q4 25
$25.2M
$0
Q3 25
$21.4M
$0
Q2 25
$15.1M
$0
Q1 25
$11.3M
$0
Q4 24
$10.6M
$9.3K
Q3 24
$7.9M
$0
Q2 24
$3.3M
$49.3K
Q1 24
$2.3M
$93.5K
Net Profit
AMPX
AMPX
BURU
BURU
Q4 25
$-24.4M
$-27.8M
Q3 25
$-3.9M
$-22.4M
Q2 25
$-6.4M
$-12.2M
Q1 25
$-9.4M
$-16.6M
Q4 24
$-11.4M
$-11.8M
Q3 24
$-10.8M
$-4.3M
Q2 24
$-12.5M
$-12.6M
Q1 24
$-9.9M
$-5.7M
Gross Margin
AMPX
AMPX
BURU
BURU
Q4 25
23.6%
Q3 25
15.5%
Q2 25
8.9%
Q1 25
-20.9%
Q4 24
-21.2%
-2640.3%
Q3 24
-64.9%
Q2 24
-195.2%
-1389.0%
Q1 24
-190.3%
-816.1%
Operating Margin
AMPX
AMPX
BURU
BURU
Q4 25
-100.9%
Q3 25
-21.9%
Q2 25
-45.2%
Q1 25
-85.7%
Q4 24
-110.6%
-31298.4%
Q3 24
-143.3%
Q2 24
-386.6%
-6565.2%
Q1 24
-441.7%
-4840.6%
Net Margin
AMPX
AMPX
BURU
BURU
Q4 25
-96.7%
Q3 25
-18.2%
Q2 25
-42.3%
Q1 25
-83.0%
Q4 24
-107.4%
-127161.8%
Q3 24
-138.1%
Q2 24
-374.2%
-25648.1%
Q1 24
-423.2%
-6098.5%
EPS (diluted)
AMPX
AMPX
BURU
BURU
Q4 25
$-0.19
$-1.59
Q3 25
$-0.03
$-0.20
Q2 25
$-0.05
$-0.18
Q1 25
$-0.08
$-0.28
Q4 24
$-0.11
$-14.65
Q3 24
$-0.10
$-1.11
Q2 24
$-0.13
$-7.57
Q1 24
$-0.11
$-6.18

Balance Sheet & Financial Strength

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

Metric
AMPX
AMPX
BURU
BURU
Cash + ST InvestmentsLiquidity on hand
$90.5M
$24.7M
Total DebtLower is stronger
$25.5M
Stockholders' EquityBook value
$103.8M
$-15.2M
Total Assets
$156.9M
$49.8M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMPX
AMPX
BURU
BURU
Q4 25
$90.5M
$24.7M
Q3 25
$73.2M
$5.9M
Q2 25
$54.2M
$111.1K
Q1 25
$48.4M
$70.9K
Q4 24
$55.2M
$209.3K
Q3 24
$35.0M
$232.1K
Q2 24
$46.4M
$117.2K
Q1 24
$39.0M
$231.9K
Total Debt
AMPX
AMPX
BURU
BURU
Q4 25
$25.5M
Q3 25
Q2 25
Q1 25
Q4 24
$9.2M
Q3 24
$8.7M
Q2 24
$7.8M
Q1 24
$9.8M
Stockholders' Equity
AMPX
AMPX
BURU
BURU
Q4 25
$103.8M
$-15.2M
Q3 25
$103.2M
$-53.9M
Q2 25
$76.7M
$-44.7M
Q1 25
$70.4M
$-39.0M
Q4 24
$69.5M
$-37.8M
Q3 24
$56.0M
$-36.3M
Q2 24
$65.1M
$-34.8M
Q1 24
$59.9M
$-37.4M
Total Assets
AMPX
AMPX
BURU
BURU
Q4 25
$156.9M
$49.8M
Q3 25
$156.5M
$13.2M
Q2 25
$123.0M
$2.5M
Q1 25
$118.5M
$1.3M
Q4 24
$121.1M
$7.0M
Q3 24
$104.2M
$7.8M
Q2 24
$112.8M
$8.4M
Q1 24
$104.7M
$8.0M

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
BURU
BURU
Operating Cash FlowLast quarter
$-3.5M
$-9.0M
Free Cash FlowOCF − Capex
$-5.9M
$-13.1M
FCF MarginFCF / Revenue
-23.2%
Capex IntensityCapex / Revenue
9.3%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-35.5M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMPX
AMPX
BURU
BURU
Q4 25
$-3.5M
$-9.0M
Q3 25
$-9.2M
$-3.1M
Q2 25
$-4.3M
$-2.1M
Q1 25
$-14.1M
$-1.9M
Q4 24
$-6.1M
$-1.1M
Q3 24
$-9.5M
$-1.2M
Q2 24
$-8.0M
$-2.2M
Q1 24
$-9.8M
$-2.1M
Free Cash Flow
AMPX
AMPX
BURU
BURU
Q4 25
$-5.9M
$-13.1M
Q3 25
$-9.7M
Q2 25
$-5.0M
Q1 25
$-15.0M
$-2.5M
Q4 24
$-9.7M
Q3 24
$-10.9M
Q2 24
$-9.6M
Q1 24
$-13.7M
FCF Margin
AMPX
AMPX
BURU
BURU
Q4 25
-23.2%
Q3 25
-45.1%
Q2 25
-33.1%
Q1 25
-133.3%
Q4 24
-91.4%
Q3 24
-138.3%
Q2 24
-285.9%
Q1 24
-585.4%
Capex Intensity
AMPX
AMPX
BURU
BURU
Q4 25
9.3%
Q3 25
1.9%
Q2 25
4.8%
Q1 25
8.1%
Q4 24
34.1%
Q3 24
17.0%
Q2 24
48.0%
Q1 24
166.8%

Financial Flow Comparison

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

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