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Side-by-side financial comparison of ClearSign Technologies Corp (CLIR) and Peraso Inc. (PRSO). Click either name above to swap in a different company.

ClearSign Technologies Corp is the larger business by last-quarter revenue ($3.7M vs $2.9M, roughly 1.3× Peraso Inc.). ClearSign Technologies Corp runs the higher net margin — -8.5% vs -43.3%, a 34.8% gap on every dollar of revenue. On growth, ClearSign Technologies Corp posted the faster year-over-year revenue change (522.2% vs -22.0%). Over the past eight quarters, ClearSign Technologies Corp's revenue compounded faster (82.5% CAGR vs 1.0%).

ClearSign Technologies Corporation (ClearSign) is a United States-based company that develops emission-control technology.

Peraso Inc. is a semiconductor technology firm specializing in the design and production of high-performance millimeter wave (mmWave) integrated circuits and modules. It delivers 5G and next-generation wireless connectivity solutions for telecom infrastructure, industrial IoT, fixed wireless access and consumer electronics segments, serving customers across North America, Asia Pacific and European markets.

CLIR vs PRSO — Head-to-Head

Bigger by revenue
CLIR
CLIR
1.3× larger
CLIR
$3.7M
$2.9M
PRSO
Growing faster (revenue YoY)
CLIR
CLIR
+544.2% gap
CLIR
522.2%
-22.0%
PRSO
Higher net margin
CLIR
CLIR
34.8% more per $
CLIR
-8.5%
-43.3%
PRSO
Faster 2-yr revenue CAGR
CLIR
CLIR
Annualised
CLIR
82.5%
1.0%
PRSO

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
CLIR
CLIR
PRSO
PRSO
Revenue
$3.7M
$2.9M
Net Profit
$-311.0K
$-1.2M
Gross Margin
21.9%
52.2%
Operating Margin
-22.5%
-44.6%
Net Margin
-8.5%
-43.3%
Revenue YoY
522.2%
-22.0%
Net Profit YoY
73.3%
20.3%
EPS (diluted)
$-0.06
$-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
CLIR
CLIR
PRSO
PRSO
Q4 25
$3.7M
$2.9M
Q3 25
$1.0M
$3.2M
Q2 25
$133.0K
$2.2M
Q1 25
$401.0K
$3.9M
Q4 24
$590.0K
$3.7M
Q3 24
$1.9M
$3.8M
Q2 24
$45.0K
$4.2M
Q1 24
$1.1M
$2.8M
Net Profit
CLIR
CLIR
PRSO
PRSO
Q4 25
$-311.0K
$-1.2M
Q3 25
$-1.4M
$-1.2M
Q2 25
$-1.7M
$-1.8M
Q1 25
$-2.1M
$-471.0K
Q4 24
$-1.2M
$-1.6M
Q3 24
$-1.2M
$-2.7M
Q2 24
$-1.9M
$-4.4M
Q1 24
$-1.1M
$-2.0M
Gross Margin
CLIR
CLIR
PRSO
PRSO
Q4 25
21.9%
52.2%
Q3 25
35.8%
56.2%
Q2 25
41.4%
48.3%
Q1 25
48.9%
69.3%
Q4 24
14.9%
56.3%
Q3 24
29.6%
47.0%
Q2 24
93.3%
55.5%
Q1 24
39.7%
46.4%
Operating Margin
CLIR
CLIR
PRSO
PRSO
Q4 25
-22.5%
-44.6%
Q3 25
-170.1%
-36.8%
Q2 25
-1382.0%
-80.0%
Q1 25
-562.8%
-13.3%
Q4 24
-282.4%
-44.3%
Q3 24
-77.1%
-70.3%
Q2 24
-4748.9%
-105.6%
Q1 24
-113.6%
-128.9%
Net Margin
CLIR
CLIR
PRSO
PRSO
Q4 25
-8.5%
-43.3%
Q3 25
-138.9%
-37.4%
Q2 25
-1263.2%
-82.4%
Q1 25
-517.7%
-12.2%
Q4 24
-197.3%
-42.4%
Q3 24
-62.1%
-70.6%
Q2 24
-4160.0%
-104.4%
Q1 24
-100.5%
-72.1%
EPS (diluted)
CLIR
CLIR
PRSO
PRSO
Q4 25
$-0.06
$-0.09
Q3 25
$-0.26
$-0.17
Q2 25
$-0.30
$-0.31
Q1 25
$-0.37
$-0.10
Q4 24
$-0.18
$0.36
Q3 24
$-0.20
$-0.98
Q2 24
$-0.40
$-1.88
Q1 24
$-0.30
$-1.07

Balance Sheet & Financial Strength

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

Metric
CLIR
CLIR
PRSO
PRSO
Cash + ST InvestmentsLiquidity on hand
$9.2M
$2.9M
Total DebtLower is stronger
Stockholders' EquityBook value
$9.5M
$4.6M
Total Assets
$12.2M
$6.1M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CLIR
CLIR
PRSO
PRSO
Q4 25
$9.2M
$2.9M
Q3 25
$10.5M
Q2 25
$12.3M
Q1 25
$12.9M
Q4 24
$14.0M
$3.3M
Q3 24
$14.5M
$1.3M
Q2 24
$16.0M
$1.9M
Q1 24
$4.6M
$2.4M
Stockholders' Equity
CLIR
CLIR
PRSO
PRSO
Q4 25
$9.5M
$4.6M
Q3 25
$9.1M
$3.6M
Q2 25
$10.4M
$3.0M
Q1 25
$12.0M
$3.6M
Q4 24
$13.8M
$3.5M
Q3 24
$14.8M
$2.0M
Q2 24
$15.9M
$3.6M
Q1 24
$4.5M
$6.7M
Total Assets
CLIR
CLIR
PRSO
PRSO
Q4 25
$12.2M
$6.1M
Q3 25
$12.7M
$6.2M
Q2 25
$14.2M
$5.5M
Q1 25
$14.5M
$6.7M
Q4 24
$16.3M
$7.2M
Q3 24
$17.1M
$7.2M
Q2 24
$17.8M
$9.8M
Q1 24
$6.6M
$11.5M

Cash Flow & Capital Efficiency

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

Metric
CLIR
CLIR
PRSO
PRSO
Operating Cash FlowLast quarter
$-1.3M
$-1.1M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
0.0%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CLIR
CLIR
PRSO
PRSO
Q4 25
$-1.3M
$-1.1M
Q3 25
$-1.8M
$-1.5M
Q2 25
$-511.0K
$-2.0M
Q1 25
$-1.1M
$-966.0K
Q4 24
$-415.0K
$-687.0K
Q3 24
$-1.4M
$-683.0K
Q2 24
$-1.5M
$-659.0K
Q1 24
$-1.0M
$-2.5M
Free Cash Flow
CLIR
CLIR
PRSO
PRSO
Q4 25
Q3 25
$-1.6M
Q2 25
Q1 25
$-1.1M
Q4 24
Q3 24
Q2 24
Q1 24
FCF Margin
CLIR
CLIR
PRSO
PRSO
Q4 25
Q3 25
-48.9%
Q2 25
Q1 25
-278.1%
Q4 24
Q3 24
Q2 24
Q1 24
Capex Intensity
CLIR
CLIR
PRSO
PRSO
Q4 25
0.0%
Q3 25
0.0%
1.1%
Q2 25
0.0%
Q1 25
1.0%
Q4 24
Q3 24
0.0%
Q2 24
Q1 24

Financial Flow Comparison

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

Revenue Breakdown by Segment

CLIR
CLIR

Segment breakdown not available.

PRSO
PRSO

Products$2.8M96%
Other$105.0K4%

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