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Side-by-side financial comparison of NATURAL GAS SERVICES GROUP INC (NGS) and Postal Realty Trust, Inc. (PSTL). Click either name above to swap in a different company.

NATURAL GAS SERVICES GROUP INC is the larger business by last-quarter revenue ($46.1M vs $26.0M, roughly 1.8× Postal Realty Trust, Inc.). Postal Realty Trust, Inc. runs the higher net margin — 17.9% vs 8.9%, a 9.0% gap on every dollar of revenue. On growth, Postal Realty Trust, Inc. posted the faster year-over-year revenue change (21.7% vs 13.5%). Postal Realty Trust, Inc. produced more free cash flow last quarter ($37.6M vs $-20.7M).

Southern Company Gas, formerly AGL Resources, is an American Fortune 500 energy services holding company headquartered in Atlanta, Georgia. The company's operations consist of natural gas distribution, wholesale services, retail operations, and midstream operations. Southern Company Gas is one of the largest natural gas distribution companies in the United States. The company serves approximately 4.5 million utility customers through its regulated distribution subsidiaries across four states....

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.

NGS vs PSTL — Head-to-Head

Bigger by revenue
NGS
NGS
1.8× larger
NGS
$46.1M
$26.0M
PSTL
Growing faster (revenue YoY)
PSTL
PSTL
+8.2% gap
PSTL
21.7%
13.5%
NGS
Higher net margin
PSTL
PSTL
9.0% more per $
PSTL
17.9%
8.9%
NGS
More free cash flow
PSTL
PSTL
$58.3M more FCF
PSTL
$37.6M
$-20.7M
NGS

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
NGS
NGS
PSTL
PSTL
Revenue
$46.1M
$26.0M
Net Profit
$4.1M
$4.6M
Gross Margin
Operating Margin
15.4%
39.2%
Net Margin
8.9%
17.9%
Revenue YoY
13.5%
21.7%
Net Profit YoY
43.2%
3.1%
EPS (diluted)
$0.32
$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
NGS
NGS
PSTL
PSTL
Q4 25
$46.1M
$26.0M
Q3 25
$43.4M
$24.3M
Q2 25
$41.4M
$23.4M
Q1 25
$41.4M
$22.1M
Q4 24
$40.7M
$21.4M
Q3 24
$19.7M
Q2 24
$18.1M
Q1 24
$17.3M
Net Profit
NGS
NGS
PSTL
PSTL
Q4 25
$4.1M
$4.6M
Q3 25
$5.8M
$3.8M
Q2 25
$5.2M
$3.6M
Q1 25
$4.9M
$2.1M
Q4 24
$2.9M
$4.5M
Q3 24
$1.1M
Q2 24
$817.0K
Q1 24
$206.0K
Operating Margin
NGS
NGS
PSTL
PSTL
Q4 25
15.4%
39.2%
Q3 25
24.8%
37.6%
Q2 25
24.0%
37.3%
Q1 25
23.0%
28.4%
Q4 24
14.9%
43.2%
Q3 24
24.3%
Q2 24
22.8%
Q1 24
17.6%
Net Margin
NGS
NGS
PSTL
PSTL
Q4 25
8.9%
17.9%
Q3 25
13.3%
15.7%
Q2 25
12.5%
15.5%
Q1 25
11.7%
9.4%
Q4 24
7.0%
21.1%
Q3 24
5.4%
Q2 24
4.5%
Q1 24
1.2%
EPS (diluted)
NGS
NGS
PSTL
PSTL
Q4 25
$0.32
$0.16
Q3 25
$0.46
$0.13
Q2 25
$0.41
$0.12
Q1 25
$0.38
$0.06
Q4 24
$0.22
$0.17
Q3 24
$0.03
Q2 24
$0.02
Q1 24
$-0.01

Balance Sheet & Financial Strength

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

Metric
NGS
NGS
PSTL
PSTL
Cash + ST InvestmentsLiquidity on hand
$1.5M
Total DebtLower is stronger
$361.1M
Stockholders' EquityBook value
$274.7M
$285.2M
Total Assets
$586.8M
$759.1M
Debt / EquityLower = less leverage
1.27×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
NGS
NGS
PSTL
PSTL
Q4 25
$1.5M
Q3 25
$1.9M
Q2 25
$325.0K
$1.1M
Q1 25
$2.1M
$639.0K
Q4 24
$2.1M
$1.8M
Q3 24
$970.0K
Q2 24
$1.7M
Q1 24
$1.9M
Total Debt
NGS
NGS
PSTL
PSTL
Q4 25
$361.1M
Q3 25
$347.0M
Q2 25
$328.8M
Q1 25
$306.7M
Q4 24
$296.7M
Q3 24
$277.0M
Q2 24
$273.7M
Q1 24
$247.6M
Stockholders' Equity
NGS
NGS
PSTL
PSTL
Q4 25
$274.7M
$285.2M
Q3 25
$271.4M
$273.9M
Q2 25
$266.2M
$250.8M
Q1 25
$260.3M
$245.5M
Q4 24
$255.1M
$251.3M
Q3 24
$245.6M
Q2 24
$245.5M
Q1 24
$248.1M
Total Assets
NGS
NGS
PSTL
PSTL
Q4 25
$586.8M
$759.1M
Q3 25
$562.3M
$735.2M
Q2 25
$525.5M
$689.8M
Q1 25
$501.7M
$654.0M
Q4 24
$492.5M
$646.8M
Q3 24
$615.1M
Q2 24
$608.2M
Q1 24
$584.1M
Debt / Equity
NGS
NGS
PSTL
PSTL
Q4 25
1.27×
Q3 25
1.27×
Q2 25
1.31×
Q1 25
1.25×
Q4 24
1.18×
Q3 24
1.13×
Q2 24
1.11×
Q1 24
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
NGS
NGS
PSTL
PSTL
Operating Cash FlowLast quarter
$13.9M
$44.5M
Free Cash FlowOCF − Capex
$-20.7M
$37.6M
FCF MarginFCF / Revenue
-44.8%
144.5%
Capex IntensityCapex / Revenue
74.9%
26.7%
Cash ConversionOCF / Net Profit
3.38×
9.59×
TTM Free Cash FlowTrailing 4 quarters
$-58.6M
$65.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
NGS
NGS
PSTL
PSTL
Q4 25
$13.9M
$44.5M
Q3 25
$16.8M
$10.9M
Q2 25
$11.0M
$11.4M
Q1 25
$21.3M
$10.8M
Q4 24
$9.4M
$33.5M
Q3 24
$8.0M
Q2 24
$9.9M
Q1 24
$6.4M
Free Cash Flow
NGS
NGS
PSTL
PSTL
Q4 25
$-20.7M
$37.6M
Q3 25
$-25.1M
$8.8M
Q2 25
$-14.8M
$9.1M
Q1 25
$2.0M
$10.2M
Q4 24
$-5.1M
$30.7M
Q3 24
$7.4M
Q2 24
$8.9M
Q1 24
$5.8M
FCF Margin
NGS
NGS
PSTL
PSTL
Q4 25
-44.8%
144.5%
Q3 25
-57.7%
36.1%
Q2 25
-35.8%
38.8%
Q1 25
4.9%
45.9%
Q4 24
-12.6%
143.8%
Q3 24
37.6%
Q2 24
49.4%
Q1 24
33.6%
Capex Intensity
NGS
NGS
PSTL
PSTL
Q4 25
74.9%
26.7%
Q3 25
96.5%
8.9%
Q2 25
62.4%
10.1%
Q1 25
46.5%
3.0%
Q4 24
35.8%
13.0%
Q3 24
3.2%
Q2 24
5.4%
Q1 24
3.5%
Cash Conversion
NGS
NGS
PSTL
PSTL
Q4 25
3.38×
9.59×
Q3 25
2.90×
2.87×
Q2 25
2.12×
3.16×
Q1 25
4.38×
5.20×
Q4 24
3.29×
7.44×
Q3 24
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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