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Side-by-side financial comparison of ASPEN AEROGELS INC (ASPN) and NL INDUSTRIES INC (NL). Click either name above to swap in a different company.

ASPEN AEROGELS INC is the larger business by last-quarter revenue ($41.3M vs $37.7M, roughly 1.1× NL INDUSTRIES INC). NL INDUSTRIES INC runs the higher net margin — -82.2% vs -176.4%, a 94.2% gap on every dollar of revenue. On growth, NL INDUSTRIES INC posted the faster year-over-year revenue change (-1.9% vs -66.4%). ASPEN AEROGELS INC produced more free cash flow last quarter ($13.7M vs $-4.7M). Over the past eight quarters, NL INDUSTRIES INC's revenue compounded faster (-0.4% CAGR vs -33.9%).

Aspen Aerogels Inc is a leading manufacturer of high-performance aerogel-based insulation and thermal management materials. It serves core sectors including renewable energy, oil and gas infrastructure, aerospace, commercial construction and industrial manufacturing, with key markets across North America, Europe and Asia-Pacific. Its products are prized for superior thermal resistance, fire safety and lightweight performance for harsh operating conditions.

NL Industries, formerly known as the National Lead Company, is a lead smelting company currently based in Houston, Texas. National Lead was one of the 12 original stocks included in the Dow Jones Industrial Average at the time of its creation on May 26, 1896.

ASPN vs NL — Head-to-Head

Bigger by revenue
ASPN
ASPN
1.1× larger
ASPN
$41.3M
$37.7M
NL
Growing faster (revenue YoY)
NL
NL
+64.5% gap
NL
-1.9%
-66.4%
ASPN
Higher net margin
NL
NL
94.2% more per $
NL
-82.2%
-176.4%
ASPN
More free cash flow
ASPN
ASPN
$18.4M more FCF
ASPN
$13.7M
$-4.7M
NL
Faster 2-yr revenue CAGR
NL
NL
Annualised
NL
-0.4%
-33.9%
ASPN

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ASPN
ASPN
NL
NL
Revenue
$41.3M
$37.7M
Net Profit
$-72.9M
$-31.0M
Gross Margin
-55.5%
32.1%
Operating Margin
-170.3%
7.6%
Net Margin
-176.4%
-82.2%
Revenue YoY
-66.4%
-1.9%
Net Profit YoY
-741.7%
-287.2%
EPS (diluted)
$-0.87
$-0.63

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
ASPN
ASPN
NL
NL
Q4 25
$41.3M
$37.7M
Q3 25
$73.0M
$40.0M
Q2 25
$78.0M
$40.4M
Q1 25
$78.7M
$40.3M
Q4 24
$123.1M
$38.4M
Q3 24
$117.3M
$33.7M
Q2 24
$117.8M
$35.9M
Q1 24
$94.5M
$38.0M
Net Profit
ASPN
ASPN
NL
NL
Q4 25
$-72.9M
$-31.0M
Q3 25
$-6.3M
$-7.9M
Q2 25
$-9.1M
$355.0K
Q1 25
$-301.2M
$667.0K
Q4 24
$11.4M
$16.5M
Q3 24
$-13.0M
$36.0M
Q2 24
$16.8M
$7.8M
Q1 24
$-1.8M
$6.8M
Gross Margin
ASPN
ASPN
NL
NL
Q4 25
-55.5%
32.1%
Q3 25
28.5%
27.6%
Q2 25
32.4%
31.9%
Q1 25
29.0%
30.2%
Q4 24
38.3%
28.8%
Q3 24
41.8%
28.1%
Q2 24
43.8%
31.1%
Q1 24
37.2%
25.5%
Operating Margin
ASPN
ASPN
NL
NL
Q4 25
-170.3%
7.6%
Q3 25
-4.6%
4.6%
Q2 25
-6.6%
6.9%
Q1 25
-380.2%
7.8%
Q4 24
12.0%
87.7%
Q3 24
14.8%
6.0%
Q2 24
17.0%
2.2%
Q1 24
2.6%
3.6%
Net Margin
ASPN
ASPN
NL
NL
Q4 25
-176.4%
-82.2%
Q3 25
-8.7%
-19.7%
Q2 25
-11.6%
0.9%
Q1 25
-382.7%
1.7%
Q4 24
9.2%
43.1%
Q3 24
-11.1%
107.0%
Q2 24
14.3%
21.8%
Q1 24
-1.9%
18.0%
EPS (diluted)
ASPN
ASPN
NL
NL
Q4 25
$-0.87
$-0.63
Q3 25
$-0.08
$-0.16
Q2 25
$-0.11
$0.01
Q1 25
$-3.67
$0.01
Q4 24
$0.15
$0.34
Q3 24
$-0.17
$0.74
Q2 24
$0.21
$0.16
Q1 24
$-0.02
$0.14

Balance Sheet & Financial Strength

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

Metric
ASPN
ASPN
NL
NL
Cash + ST InvestmentsLiquidity on hand
$156.9M
$110.6M
Total DebtLower is stronger
$65.5M
Stockholders' EquityBook value
$235.5M
$358.8M
Total Assets
$406.7M
$464.2M
Debt / EquityLower = less leverage
0.28×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ASPN
ASPN
NL
NL
Q4 25
$156.9M
$110.6M
Q3 25
$150.7M
$101.9M
Q2 25
$167.6M
$111.5M
Q1 25
$192.0M
$110.0M
Q4 24
$220.9M
$163.2M
Q3 24
$113.5M
$146.0M
Q2 24
$91.4M
$179.4M
Q1 24
$101.5M
$167.9M
Total Debt
ASPN
ASPN
NL
NL
Q4 25
$65.5M
Q3 25
$70.1M
Q2 25
$77.3M
Q1 25
$95.4M
Q4 24
$95.0M
Q3 24
$93.7M
Q2 24
Q1 24
Stockholders' Equity
ASPN
ASPN
NL
NL
Q4 25
$235.5M
$358.8M
Q3 25
$305.7M
$375.4M
Q2 25
$308.8M
$397.6M
Q1 25
$314.8M
$397.6M
Q4 24
$614.7M
$396.9M
Q3 24
$507.6M
$386.0M
Q2 24
$517.8M
$373.1M
Q1 24
$491.2M
$368.1M
Total Assets
ASPN
ASPN
NL
NL
Q4 25
$406.7M
$464.2M
Q3 25
$491.4M
$500.2M
Q2 25
$525.1M
$523.7M
Q1 25
$555.0M
$520.0M
Q4 24
$895.1M
$578.3M
Q3 24
$782.6M
$585.6M
Q2 24
$748.6M
$580.0M
Q1 24
$698.0M
$568.8M
Debt / Equity
ASPN
ASPN
NL
NL
Q4 25
0.28×
Q3 25
0.23×
Q2 25
0.25×
Q1 25
0.30×
Q4 24
0.15×
Q3 24
0.18×
Q2 24
Q1 24

Cash Flow & Capital Efficiency

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

Metric
ASPN
ASPN
NL
NL
Operating Cash FlowLast quarter
$16.1M
$-4.2M
Free Cash FlowOCF − Capex
$13.7M
$-4.7M
FCF MarginFCF / Revenue
33.1%
-12.6%
Capex IntensityCapex / Revenue
6.0%
1.6%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-4.6M
$-40.1M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ASPN
ASPN
NL
NL
Q4 25
$16.1M
$-4.2M
Q3 25
$15.0M
$7.9M
Q2 25
$-3.9M
$7.3M
Q1 25
$5.6M
$-47.5M
Q4 24
$35.7M
$9.0M
Q3 24
$20.8M
$-5.7M
Q2 24
$6.8M
$15.5M
Q1 24
$-17.7M
$6.7M
Free Cash Flow
ASPN
ASPN
NL
NL
Q4 25
$13.7M
$-4.7M
Q3 25
$5.9M
$7.0M
Q2 25
$-16.8M
$5.9M
Q1 25
$-7.4M
$-48.3M
Q4 24
$20.9M
$8.7M
Q3 24
$-50.0K
$-6.1M
Q2 24
$-18.0M
$15.1M
Q1 24
$-43.6M
$6.4M
FCF Margin
ASPN
ASPN
NL
NL
Q4 25
33.1%
-12.6%
Q3 25
8.1%
17.4%
Q2 25
-21.6%
14.7%
Q1 25
-9.4%
-119.9%
Q4 24
17.0%
22.8%
Q3 24
-0.0%
-18.3%
Q2 24
-15.3%
42.1%
Q1 24
-46.1%
17.0%
Capex Intensity
ASPN
ASPN
NL
NL
Q4 25
6.0%
1.6%
Q3 25
12.5%
2.5%
Q2 25
16.5%
3.3%
Q1 25
16.5%
2.0%
Q4 24
12.0%
0.6%
Q3 24
17.7%
1.4%
Q2 24
21.1%
1.2%
Q1 24
27.4%
0.8%
Cash Conversion
ASPN
ASPN
NL
NL
Q4 25
Q3 25
Q2 25
20.53×
Q1 25
-71.18×
Q4 24
3.14×
0.54×
Q3 24
-0.16×
Q2 24
0.41×
1.98×
Q1 24
0.99×

Financial Flow Comparison

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

Revenue Breakdown by Segment

ASPN
ASPN

Energy Industrial$14.5M35%
Other$13.9M34%
Thermal Barrier$12.9M31%

NL
NL

Security Products$29.5M78%
Marine Components$8.2M22%

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