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Side-by-side financial comparison of Arq, Inc. (ARQ) and Postal Realty Trust, Inc. (PSTL). Click either name above to swap in a different company.

Arq, Inc. is the larger business by last-quarter revenue ($29.4M vs $26.0M, roughly 1.1× Postal Realty Trust, Inc.). On growth, Postal Realty Trust, Inc. posted the faster year-over-year revenue change (21.7% vs 8.8%). Postal Realty Trust, Inc. produced more free cash flow last quarter ($37.6M vs $-3.5M). Over the past eight quarters, Postal Realty Trust, Inc.'s revenue compounded faster (22.6% CAGR vs 16.4%).

Arq, Inc. is a sustainable technology firm focused on processing coal mining waste to produce high-value, low-carbon solid fuels and industrial carbon products. It caters to customers across the energy, construction, and manufacturing sectors, with core markets in North America and major European regions, aiming to cut industrial waste and carbon footprints for its clients.

Postal Realty Trust, Inc. is a specialized real estate investment trust that acquires, owns, and manages properties primarily leased to the United States Postal Service. Its portfolio includes last-mile postal facilities, sorting centers, and retail post office locations across the U.S., supporting critical mail and package delivery infrastructure.

ARQ vs PSTL — Head-to-Head

Bigger by revenue
ARQ
ARQ
1.1× larger
ARQ
$29.4M
$26.0M
PSTL
Growing faster (revenue YoY)
PSTL
PSTL
+12.8% gap
PSTL
21.7%
8.8%
ARQ
More free cash flow
PSTL
PSTL
$41.1M more FCF
PSTL
$37.6M
$-3.5M
ARQ
Faster 2-yr revenue CAGR
PSTL
PSTL
Annualised
PSTL
22.6%
16.4%
ARQ

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ARQ
ARQ
PSTL
PSTL
Revenue
$29.4M
$26.0M
Net Profit
$4.6M
Gross Margin
13.6%
Operating Margin
-174.1%
39.2%
Net Margin
17.9%
Revenue YoY
8.8%
21.7%
Net Profit YoY
3.1%
EPS (diluted)
$-1.20
$0.16

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
ARQ
ARQ
PSTL
PSTL
Q4 25
$29.4M
$26.0M
Q3 25
$35.1M
$24.3M
Q2 25
$28.6M
$23.4M
Q1 25
$27.2M
$22.1M
Q4 24
$27.0M
$21.4M
Q3 24
$34.8M
$19.7M
Q2 24
$25.4M
$18.1M
Q1 24
$21.7M
$17.3M
Net Profit
ARQ
ARQ
PSTL
PSTL
Q4 25
$4.6M
Q3 25
$-653.0K
$3.8M
Q2 25
$-2.1M
$3.6M
Q1 25
$203.0K
$2.1M
Q4 24
$4.5M
Q3 24
$1.6M
$1.1M
Q2 24
$-2.0M
$817.0K
Q1 24
$-3.4M
$206.0K
Gross Margin
ARQ
ARQ
PSTL
PSTL
Q4 25
13.6%
Q3 25
28.8%
Q2 25
33.3%
Q1 25
36.4%
Q4 24
36.3%
Q3 24
38.6%
Q2 24
32.2%
Q1 24
36.9%
Operating Margin
ARQ
ARQ
PSTL
PSTL
Q4 25
-174.1%
39.2%
Q3 25
-2.4%
37.6%
Q2 25
-5.4%
37.3%
Q1 25
2.4%
28.4%
Q4 24
1.5%
43.2%
Q3 24
5.8%
24.3%
Q2 24
-5.6%
22.8%
Q1 24
-13.7%
17.6%
Net Margin
ARQ
ARQ
PSTL
PSTL
Q4 25
17.9%
Q3 25
-1.9%
15.7%
Q2 25
-7.5%
15.5%
Q1 25
0.7%
9.4%
Q4 24
21.1%
Q3 24
4.7%
5.4%
Q2 24
-7.7%
4.5%
Q1 24
-15.7%
1.2%
EPS (diluted)
ARQ
ARQ
PSTL
PSTL
Q4 25
$-1.20
$0.16
Q3 25
$-0.02
$0.13
Q2 25
$-0.05
$0.12
Q1 25
$0.00
$0.06
Q4 24
$-0.03
$0.17
Q3 24
$0.04
$0.03
Q2 24
$-0.06
$0.02
Q1 24
$-0.09
$-0.01

Balance Sheet & Financial Strength

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

Metric
ARQ
ARQ
PSTL
PSTL
Cash + ST InvestmentsLiquidity on hand
$6.6M
$1.5M
Total DebtLower is stronger
$28.7M
$361.1M
Stockholders' EquityBook value
$168.0M
$285.2M
Total Assets
$230.6M
$759.1M
Debt / EquityLower = less leverage
0.17×
1.27×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ARQ
ARQ
PSTL
PSTL
Q4 25
$6.6M
$1.5M
Q3 25
$7.0M
$1.9M
Q2 25
$7.0M
$1.1M
Q1 25
$6.3M
$639.0K
Q4 24
$13.5M
$1.8M
Q3 24
$48.7M
$970.0K
Q2 24
$28.5M
$1.7M
Q1 24
$35.2M
$1.9M
Total Debt
ARQ
ARQ
PSTL
PSTL
Q4 25
$28.7M
$361.1M
Q3 25
$26.1M
$347.0M
Q2 25
$28.9M
$328.8M
Q1 25
$27.1M
$306.7M
Q4 24
$25.1M
$296.7M
Q3 24
$21.6M
$277.0M
Q2 24
$22.2M
$273.7M
Q1 24
$22.6M
$247.6M
Stockholders' Equity
ARQ
ARQ
PSTL
PSTL
Q4 25
$168.0M
$285.2M
Q3 25
$217.2M
$273.9M
Q2 25
$216.8M
$250.8M
Q1 25
$218.2M
$245.5M
Q4 24
$217.3M
$251.3M
Q3 24
$218.1M
$245.6M
Q2 24
$189.6M
$245.5M
Q1 24
$175.2M
$248.1M
Total Assets
ARQ
ARQ
PSTL
PSTL
Q4 25
$230.6M
$759.1M
Q3 25
$277.9M
$735.2M
Q2 25
$284.5M
$689.8M
Q1 25
$283.7M
$654.0M
Q4 24
$284.4M
$646.8M
Q3 24
$280.0M
$615.1M
Q2 24
$248.6M
$608.2M
Q1 24
$229.8M
$584.1M
Debt / Equity
ARQ
ARQ
PSTL
PSTL
Q4 25
0.17×
1.27×
Q3 25
0.12×
1.27×
Q2 25
0.13×
1.31×
Q1 25
0.12×
1.25×
Q4 24
0.12×
1.18×
Q3 24
0.10×
1.13×
Q2 24
0.12×
1.11×
Q1 24
0.13×
1.00×

Cash Flow & Capital Efficiency

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

Metric
ARQ
ARQ
PSTL
PSTL
Operating Cash FlowLast quarter
$-2.8M
$44.5M
Free Cash FlowOCF − Capex
$-3.5M
$37.6M
FCF MarginFCF / Revenue
-12.0%
144.5%
Capex IntensityCapex / Revenue
2.7%
26.7%
Cash ConversionOCF / Net Profit
9.59×
TTM Free Cash FlowTrailing 4 quarters
$-11.3M
$65.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ARQ
ARQ
PSTL
PSTL
Q4 25
$-2.8M
$44.5M
Q3 25
$5.3M
$10.9M
Q2 25
$527.0K
$11.4M
Q1 25
$-5.8M
$10.8M
Q4 24
$5.2M
$33.5M
Q3 24
$7.7M
$8.0M
Q2 24
$-3.0M
$9.9M
Q1 24
$526.0K
$6.4M
Free Cash Flow
ARQ
ARQ
PSTL
PSTL
Q4 25
$-3.5M
$37.6M
Q3 25
$3.1M
$8.8M
Q2 25
$-1.4M
$9.1M
Q1 25
$-9.5M
$10.2M
Q4 24
$-37.8M
$30.7M
Q3 24
$-5.8M
$7.4M
Q2 24
$-22.1M
$8.9M
Q1 24
$-9.1M
$5.8M
FCF Margin
ARQ
ARQ
PSTL
PSTL
Q4 25
-12.0%
144.5%
Q3 25
8.8%
36.1%
Q2 25
-4.7%
38.8%
Q1 25
-34.9%
45.9%
Q4 24
-139.6%
143.8%
Q3 24
-16.5%
37.6%
Q2 24
-87.1%
49.4%
Q1 24
-41.7%
33.6%
Capex Intensity
ARQ
ARQ
PSTL
PSTL
Q4 25
2.7%
26.7%
Q3 25
6.3%
8.9%
Q2 25
6.6%
10.1%
Q1 25
13.6%
3.0%
Q4 24
158.9%
13.0%
Q3 24
38.7%
3.2%
Q2 24
75.5%
5.4%
Q1 24
44.1%
3.5%
Cash Conversion
ARQ
ARQ
PSTL
PSTL
Q4 25
9.59×
Q3 25
2.87×
Q2 25
3.16×
Q1 25
-28.59×
5.20×
Q4 24
7.44×
Q3 24
4.76×
7.48×
Q2 24
12.10×
Q1 24
31.07×

Financial Flow Comparison

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

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