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Side-by-side financial comparison of Alto Ingredients, Inc. (ALTO) and Proto Labs Inc (PRLB). Click either name above to swap in a different company.

Alto Ingredients, Inc. is the larger business by last-quarter revenue ($232.0M vs $136.5M, roughly 1.7× Proto Labs Inc). On growth, Proto Labs Inc posted the faster year-over-year revenue change (12.1% vs -1.9%). Proto Labs Inc produced more free cash flow last quarter ($8.4M vs $7.6M). Over the past eight quarters, Proto Labs Inc's revenue compounded faster (3.3% CAGR vs -1.8%).

Palo Alto Networks, Inc. is an American multinational cybersecurity company with headquarters in Santa Clara, California. The core product is a platform that includes advanced firewalls and cloud-based offerings that extend those firewalls to cover other aspects of security. The company serves over 70,000 organizations in over 150 countries, including 85 of the Fortune 100. It is home to the Unit 42 threat research team and hosts the Ignite cybersecurity conference. It is a partner organizati...

Protolabs is a company that provides rapid manufacturing of 3D printed, CNC-machined, sheet metal, and injection-molded custom parts for prototyping and production. Markets like medical devices, aerospace, electronics, appliances, automotive and consumer products use these parts. Protolabs' headquarters are located in Maple Plain, Minnesota, with Minnesota-based manufacturing facilities in Plymouth, Brooklyn Park, and Rosemount, along with additional facilities in Nashua, New Hampshire and Ca...

ALTO vs PRLB — Head-to-Head

Bigger by revenue
ALTO
ALTO
1.7× larger
ALTO
$232.0M
$136.5M
PRLB
Growing faster (revenue YoY)
PRLB
PRLB
+14.0% gap
PRLB
12.1%
-1.9%
ALTO
More free cash flow
PRLB
PRLB
$809.0K more FCF
PRLB
$8.4M
$7.6M
ALTO
Faster 2-yr revenue CAGR
PRLB
PRLB
Annualised
PRLB
3.3%
-1.8%
ALTO

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ALTO
ALTO
PRLB
PRLB
Revenue
$232.0M
$136.5M
Net Profit
$21.8M
Gross Margin
6.5%
44.2%
Operating Margin
3.2%
5.0%
Net Margin
9.4%
Revenue YoY
-1.9%
12.1%
Net Profit YoY
152.3%
EPS (diluted)
$0.28
$0.25

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
ALTO
ALTO
PRLB
PRLB
Q4 25
$232.0M
$136.5M
Q3 25
$241.0M
$135.4M
Q2 25
$218.4M
$135.1M
Q1 25
$226.5M
$126.2M
Q4 24
$236.3M
$121.8M
Q3 24
$251.8M
$125.6M
Q2 24
$236.5M
$125.6M
Q1 24
$240.6M
$127.9M
Net Profit
ALTO
ALTO
PRLB
PRLB
Q4 25
$21.8M
Q3 25
$14.2M
$7.2M
Q2 25
$-11.0M
$4.4M
Q1 25
$-11.7M
$3.6M
Q4 24
$-41.7M
Q3 24
$-2.4M
$7.2M
Q2 24
$-3.1M
$4.5M
Q1 24
$-11.7M
$5.3M
Gross Margin
ALTO
ALTO
PRLB
PRLB
Q4 25
6.5%
44.2%
Q3 25
9.7%
45.3%
Q2 25
-0.9%
44.3%
Q1 25
-0.8%
44.1%
Q4 24
-0.6%
42.7%
Q3 24
2.4%
45.6%
Q2 24
3.2%
45.0%
Q1 24
-1.0%
44.9%
Operating Margin
ALTO
ALTO
PRLB
PRLB
Q4 25
3.2%
5.0%
Q3 25
7.0%
6.5%
Q2 25
-3.7%
3.7%
Q1 25
-4.0%
3.6%
Q4 24
-16.6%
-1.2%
Q3 24
-0.3%
6.8%
Q2 24
-0.6%
4.8%
Q1 24
-4.3%
5.3%
Net Margin
ALTO
ALTO
PRLB
PRLB
Q4 25
9.4%
Q3 25
5.9%
5.3%
Q2 25
-5.0%
3.3%
Q1 25
-5.2%
2.9%
Q4 24
-17.6%
Q3 24
-1.0%
5.7%
Q2 24
-1.3%
3.6%
Q1 24
-4.9%
4.1%
EPS (diluted)
ALTO
ALTO
PRLB
PRLB
Q4 25
$0.28
$0.25
Q3 25
$0.19
$0.30
Q2 25
$-0.15
$0.18
Q1 25
$-0.16
$0.15
Q4 24
$-0.56
$-0.01
Q3 24
$-0.04
$0.29
Q2 24
$-0.05
$0.18
Q1 24
$-0.17
$0.20

Balance Sheet & Financial Strength

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

Metric
ALTO
ALTO
PRLB
PRLB
Cash + ST InvestmentsLiquidity on hand
$23.4M
$128.1M
Total DebtLower is stronger
$84.6M
Stockholders' EquityBook value
$245.2M
$673.9M
Total Assets
$388.8M
$763.4M
Debt / EquityLower = less leverage
0.34×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ALTO
ALTO
PRLB
PRLB
Q4 25
$23.4M
$128.1M
Q3 25
$32.5M
$119.2M
Q2 25
$29.8M
$103.2M
Q1 25
$26.8M
$96.8M
Q4 24
$35.5M
$103.1M
Q3 24
$33.6M
$100.5M
Q2 24
$27.1M
$112.9M
Q1 24
$29.3M
$109.7M
Total Debt
ALTO
ALTO
PRLB
PRLB
Q4 25
$84.6M
Q3 25
$106.0M
Q2 25
$124.2M
Q1 25
$117.0M
Q4 24
$99.7M
Q3 24
$90.6M
Q2 24
$98.6M
Q1 24
$92.2M
Stockholders' Equity
ALTO
ALTO
PRLB
PRLB
Q4 25
$245.2M
$673.9M
Q3 25
$222.4M
$664.7M
Q2 25
$207.8M
$664.7M
Q1 25
$213.9M
$656.8M
Q4 24
$225.1M
$670.2M
Q3 24
$263.9M
$680.0M
Q2 24
$265.8M
$685.2M
Q1 24
$268.7M
$687.3M
Total Assets
ALTO
ALTO
PRLB
PRLB
Q4 25
$388.8M
$763.4M
Q3 25
$388.5M
$756.9M
Q2 25
$393.1M
$743.3M
Q1 25
$402.2M
$737.5M
Q4 24
$401.4M
$743.5M
Q3 24
$417.4M
$753.8M
Q2 24
$432.5M
$758.2M
Q1 24
$434.6M
$769.8M
Debt / Equity
ALTO
ALTO
PRLB
PRLB
Q4 25
0.34×
Q3 25
0.48×
Q2 25
0.60×
Q1 25
0.55×
Q4 24
0.44×
Q3 24
0.34×
Q2 24
0.37×
Q1 24
0.34×

Cash Flow & Capital Efficiency

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

Metric
ALTO
ALTO
PRLB
PRLB
Operating Cash FlowLast quarter
$9.5M
$16.5M
Free Cash FlowOCF − Capex
$7.6M
$8.4M
FCF MarginFCF / Revenue
3.3%
6.2%
Capex IntensityCapex / Revenue
0.8%
5.9%
Cash ConversionOCF / Net Profit
0.44×
TTM Free Cash FlowTrailing 4 quarters
$8.6M
$59.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ALTO
ALTO
PRLB
PRLB
Q4 25
$9.5M
$16.5M
Q3 25
$22.8M
$29.1M
Q2 25
$-848.0K
$10.6M
Q1 25
$-18.2M
$18.4M
Q4 24
$-9.8M
$17.3M
Q3 24
$18.6M
$24.8M
Q2 24
$-13.7M
$14.4M
Q1 24
$1.4M
$21.3M
Free Cash Flow
ALTO
ALTO
PRLB
PRLB
Q4 25
$7.6M
$8.4M
Q3 25
$21.2M
$25.0M
Q2 25
$-1.3M
$9.1M
Q1 25
$-18.8M
$17.1M
Q4 24
$-11.1M
$16.5M
Q3 24
$18.1M
$23.2M
Q2 24
$-18.4M
$10.2M
Q1 24
$-3.2M
$18.8M
FCF Margin
ALTO
ALTO
PRLB
PRLB
Q4 25
3.3%
6.2%
Q3 25
8.8%
18.5%
Q2 25
-0.6%
6.7%
Q1 25
-8.3%
13.6%
Q4 24
-4.7%
13.5%
Q3 24
7.2%
18.5%
Q2 24
-7.8%
8.2%
Q1 24
-1.3%
14.7%
Capex Intensity
ALTO
ALTO
PRLB
PRLB
Q4 25
0.8%
5.9%
Q3 25
0.7%
3.0%
Q2 25
0.2%
1.1%
Q1 25
0.2%
1.0%
Q4 24
0.5%
0.7%
Q3 24
0.2%
1.2%
Q2 24
2.0%
3.3%
Q1 24
1.9%
2.0%
Cash Conversion
ALTO
ALTO
PRLB
PRLB
Q4 25
0.44×
Q3 25
1.60×
4.03×
Q2 25
2.39×
Q1 25
5.11×
Q4 24
Q3 24
3.44×
Q2 24
3.18×
Q1 24
4.05×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ALTO
ALTO

Pekin Campus Production$105.1M45%
Total Marketing And Distribution Sales$57.9M25%
Marketing And Distributions$55.6M24%
Other$11.2M5%
Kodiak Carbonic LLC$2.1M1%

PRLB
PRLB

CNC Machining Firstcut$65.5M48%
Injection Molding Protomold$47.6M35%
Three D Printing Fineline$18.8M14%
Sheet Metal$4.4M3%

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