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Side-by-side financial comparison of Energy Recovery, Inc. (ERII) and Riley Exploration Permian, Inc. (REPX). Click either name above to swap in a different company.

Riley Exploration Permian, Inc. is the larger business by last-quarter revenue ($97.3M vs $66.9M, roughly 1.5× Energy Recovery, Inc.). On growth, Energy Recovery, Inc. posted the faster year-over-year revenue change (-0.3% vs -5.3%). Over the past eight quarters, Energy Recovery, Inc.'s revenue compounded faster (8.1% CAGR vs -1.2%).

Energy Recovery Inc. is an American manufacturer of energy recovery devices for water and CO2 refrigeration industries.

Riley Exploration Permian, Inc. is an independent energy company focused on exploration, development, and production of crude oil, natural gas, and natural gas liquids primarily in the US Permian Basin spanning Texas and New Mexico. It prioritizes cost-efficient onshore reserve development to supply reliable energy products to North American markets.

ERII vs REPX — Head-to-Head

Bigger by revenue
REPX
REPX
1.5× larger
REPX
$97.3M
$66.9M
ERII
Growing faster (revenue YoY)
ERII
ERII
+5.0% gap
ERII
-0.3%
-5.3%
REPX
Faster 2-yr revenue CAGR
ERII
ERII
Annualised
ERII
8.1%
-1.2%
REPX

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ERII
ERII
REPX
REPX
Revenue
$66.9M
$97.3M
Net Profit
$26.9M
Gross Margin
67.2%
Operating Margin
46.8%
26.9%
Net Margin
40.2%
Revenue YoY
-0.3%
-5.3%
Net Profit YoY
14.7%
EPS (diluted)
$0.49
$4.02

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
ERII
ERII
REPX
REPX
Q4 25
$66.9M
$97.3M
Q3 25
$32.0M
$106.9M
Q2 25
$28.1M
$85.4M
Q1 25
$102.5M
Q4 24
$67.1M
$102.7M
Q3 24
$38.6M
$102.3M
Q2 24
$27.2M
$105.4M
Q1 24
$12.1M
$99.7M
Net Profit
ERII
ERII
REPX
REPX
Q4 25
$26.9M
Q3 25
$3.9M
$16.3M
Q2 25
$2.1M
$30.5M
Q1 25
$28.6M
Q4 24
$23.5M
Q3 24
$8.5M
$25.7M
Q2 24
$-642.0K
$33.5M
Q1 24
$-8.3M
$18.8M
Gross Margin
ERII
ERII
REPX
REPX
Q4 25
67.2%
Q3 25
64.2%
Q2 25
64.0%
Q1 25
Q4 24
70.2%
Q3 24
65.1%
Q2 24
64.6%
Q1 24
59.0%
Operating Margin
ERII
ERII
REPX
REPX
Q4 25
46.8%
26.9%
Q3 25
11.4%
27.0%
Q2 25
5.3%
33.7%
Q1 25
48.3%
Q4 24
38.2%
31.2%
Q3 24
18.3%
17.1%
Q2 24
-7.4%
50.9%
Q1 24
-90.4%
50.7%
Net Margin
ERII
ERII
REPX
REPX
Q4 25
40.2%
Q3 25
12.1%
15.3%
Q2 25
7.3%
35.7%
Q1 25
27.9%
Q4 24
35.0%
Q3 24
22.0%
25.1%
Q2 24
-2.4%
31.8%
Q1 24
-68.3%
18.8%
EPS (diluted)
ERII
ERII
REPX
REPX
Q4 25
$0.49
$4.02
Q3 25
$0.07
$0.77
Q2 25
$0.04
$1.44
Q1 25
$1.36
Q4 24
$0.40
$0.52
Q3 24
$0.15
$1.21
Q2 24
$-0.01
$1.59
Q1 24
$-0.14
$0.94

Balance Sheet & Financial Strength

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

Metric
ERII
ERII
REPX
REPX
Cash + ST InvestmentsLiquidity on hand
$75.2M
Total DebtLower is stronger
$247.9M
Stockholders' EquityBook value
$206.2M
$634.2M
Total Assets
$231.5M
$1.2B
Debt / EquityLower = less leverage
0.39×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ERII
ERII
REPX
REPX
Q4 25
$75.2M
Q3 25
$70.4M
Q2 25
$79.5M
Q1 25
Q4 24
$78.0M
Q3 24
$118.6M
Q2 24
$101.0M
Q1 24
$117.4M
Total Debt
ERII
ERII
REPX
REPX
Q4 25
$247.9M
Q3 25
$367.0M
Q2 25
$275.2M
Q1 25
$249.3M
Q4 24
$269.5M
Q3 24
$288.6M
Q2 24
$322.7M
Q1 24
$341.8M
Stockholders' Equity
ERII
ERII
REPX
REPX
Q4 25
$206.2M
$634.2M
Q3 25
$180.8M
$566.5M
Q2 25
$185.2M
$556.9M
Q1 25
$532.4M
Q4 24
$210.0M
$510.6M
Q3 24
$233.9M
$507.4M
Q2 24
$218.5M
$489.0M
Q1 24
$216.0M
$434.6M
Total Assets
ERII
ERII
REPX
REPX
Q4 25
$231.5M
$1.2B
Q3 25
$209.6M
$1.2B
Q2 25
$212.3M
$1.0B
Q1 25
$994.9M
Q4 24
$242.8M
$993.5M
Q3 24
$262.7M
$997.9M
Q2 24
$249.0M
$1.0B
Q1 24
$244.3M
$956.4M
Debt / Equity
ERII
ERII
REPX
REPX
Q4 25
0.39×
Q3 25
0.65×
Q2 25
0.49×
Q1 25
0.47×
Q4 24
0.53×
Q3 24
0.57×
Q2 24
0.66×
Q1 24
0.79×

Cash Flow & Capital Efficiency

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

Metric
ERII
ERII
REPX
REPX
Operating Cash FlowLast quarter
$7.1M
$64.9M
Free Cash FlowOCF − Capex
$6.4M
FCF MarginFCF / Revenue
9.6%
Capex IntensityCapex / Revenue
1.0%
Cash ConversionOCF / Net Profit
0.26×
TTM Free Cash FlowTrailing 4 quarters
$15.8M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ERII
ERII
REPX
REPX
Q4 25
$7.1M
$64.9M
Q3 25
$-3.1M
$63.6M
Q2 25
$4.1M
$33.6M
Q1 25
$50.4M
Q4 24
$9.0M
$66.4M
Q3 24
$-3.0M
$72.1M
Q2 24
$8.1M
$51.6M
Q1 24
$6.5M
$56.1M
Free Cash Flow
ERII
ERII
REPX
REPX
Q4 25
$6.4M
Q3 25
$-3.5M
Q2 25
$4.0M
Q1 25
Q4 24
$8.9M
Q3 24
$-3.2M
Q2 24
$7.9M
Q1 24
$5.7M
FCF Margin
ERII
ERII
REPX
REPX
Q4 25
9.6%
Q3 25
-10.9%
Q2 25
14.3%
Q1 25
Q4 24
13.2%
Q3 24
-8.2%
Q2 24
28.9%
Q1 24
46.9%
Capex Intensity
ERII
ERII
REPX
REPX
Q4 25
1.0%
Q3 25
1.1%
Q2 25
0.5%
Q1 25
Q4 24
0.2%
Q3 24
0.4%
Q2 24
0.7%
Q1 24
6.8%
Cash Conversion
ERII
ERII
REPX
REPX
Q4 25
0.26×
Q3 25
-0.81×
3.90×
Q2 25
2.02×
1.10×
Q1 25
1.76×
Q4 24
0.38×
Q3 24
-0.35×
2.81×
Q2 24
1.54×
Q1 24
2.99×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ERII
ERII

Water Segment$38.6M58%
Other$11.0M16%
Original Equipment Manufacturer$10.6M16%
Aftermarket$6.6M10%

REPX
REPX

Segment breakdown not available.

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