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

ASPEN AEROGELS INC is the larger business by last-quarter revenue ($41.3M vs $21.8M, roughly 1.9× NEKTAR THERAPEUTICS). NEKTAR THERAPEUTICS runs the higher net margin — -165.4% vs -176.4%, a 10.9% gap on every dollar of revenue. On growth, NEKTAR THERAPEUTICS posted the faster year-over-year revenue change (-25.3% vs -66.4%). ASPEN AEROGELS INC produced more free cash flow last quarter ($13.7M vs $-65.0M). Over the past eight quarters, NEKTAR THERAPEUTICS'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.

Nektar Therapeutics is an American biopharmaceutical company. The company was founded in 1990 and is based in San Francisco, California. The company develops new drug candidates by applying its proprietary PEGylation and advanced polymer conjugate technologies to modify chemical structure of substances, which improves drug characteristics like retention and solubility. It is a technology supplier to a number of pharmaceutical companies including Affymax, Amgen, Merck, Pfizer and UCB Pharma, e...

ASPN vs NKTR — Head-to-Head

Bigger by revenue
ASPN
ASPN
1.9× larger
ASPN
$41.3M
$21.8M
NKTR
Growing faster (revenue YoY)
NKTR
NKTR
+41.2% gap
NKTR
-25.3%
-66.4%
ASPN
Higher net margin
NKTR
NKTR
10.9% more per $
NKTR
-165.4%
-176.4%
ASPN
More free cash flow
ASPN
ASPN
$78.6M more FCF
ASPN
$13.7M
$-65.0M
NKTR
Faster 2-yr revenue CAGR
NKTR
NKTR
Annualised
NKTR
0.4%
-33.9%
ASPN

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ASPN
ASPN
NKTR
NKTR
Revenue
$41.3M
$21.8M
Net Profit
$-72.9M
$-36.1M
Gross Margin
-55.5%
Operating Margin
-170.3%
-126.9%
Net Margin
-176.4%
-165.4%
Revenue YoY
-66.4%
-25.3%
Net Profit YoY
-741.7%
-596.9%
EPS (diluted)
$-0.87
$-4.67

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
NKTR
NKTR
Q4 25
$41.3M
$21.8M
Q3 25
$73.0M
$11.8M
Q2 25
$78.0M
$11.2M
Q1 25
$78.7M
$10.5M
Q4 24
$123.1M
$29.2M
Q3 24
$117.3M
$24.1M
Q2 24
$117.8M
$23.5M
Q1 24
$94.5M
$21.6M
Net Profit
ASPN
ASPN
NKTR
NKTR
Q4 25
$-72.9M
$-36.1M
Q3 25
$-6.3M
$-35.5M
Q2 25
$-9.1M
$-41.6M
Q1 25
$-301.2M
$-50.9M
Q4 24
$11.4M
$7.3M
Q3 24
$-13.0M
$-37.1M
Q2 24
$16.8M
$-52.4M
Q1 24
$-1.8M
$-36.8M
Gross Margin
ASPN
ASPN
NKTR
NKTR
Q4 25
-55.5%
Q3 25
28.5%
Q2 25
32.4%
Q1 25
29.0%
Q4 24
38.3%
72.7%
Q3 24
41.8%
81.6%
Q2 24
43.8%
58.5%
Q1 24
37.2%
60.6%
Operating Margin
ASPN
ASPN
NKTR
NKTR
Q4 25
-170.3%
-126.9%
Q3 25
-4.6%
-268.6%
Q2 25
-6.6%
-324.2%
Q1 25
-380.2%
-425.8%
Q4 24
12.0%
49.2%
Q3 24
14.8%
-142.4%
Q2 24
17.0%
-211.9%
Q1 24
2.6%
-163.7%
Net Margin
ASPN
ASPN
NKTR
NKTR
Q4 25
-176.4%
-165.4%
Q3 25
-8.7%
-301.3%
Q2 25
-11.6%
-372.2%
Q1 25
-382.7%
-486.4%
Q4 24
9.2%
24.9%
Q3 24
-11.1%
-153.6%
Q2 24
14.3%
-222.9%
Q1 24
-1.9%
-170.1%
EPS (diluted)
ASPN
ASPN
NKTR
NKTR
Q4 25
$-0.87
$-4.67
Q3 25
$-0.08
$-1.87
Q2 25
$-0.11
$-2.95
Q1 25
$-3.67
$-0.24
Q4 24
$0.15
$-2.07
Q3 24
$-0.17
$-2.66
Q2 24
$0.21
$-3.76
Q1 24
$-0.02
$-0.19

Balance Sheet & Financial Strength

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

Metric
ASPN
ASPN
NKTR
NKTR
Cash + ST InvestmentsLiquidity on hand
$156.9M
$15.1M
Total DebtLower is stronger
$65.5M
Stockholders' EquityBook value
$235.5M
$89.8M
Total Assets
$406.7M
$280.4M
Debt / EquityLower = less leverage
0.28×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ASPN
ASPN
NKTR
NKTR
Q4 25
$156.9M
$15.1M
Q3 25
$150.7M
$41.0M
Q2 25
$167.6M
$43.0M
Q1 25
$192.0M
$38.9M
Q4 24
$220.9M
$44.3M
Q3 24
$113.5M
$30.1M
Q2 24
$91.4M
$27.9M
Q1 24
$101.5M
$48.6M
Total Debt
ASPN
ASPN
NKTR
NKTR
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
NKTR
NKTR
Q4 25
$235.5M
$89.8M
Q3 25
$305.7M
$85.1M
Q2 25
$308.8M
$-24.2M
Q1 25
$314.8M
$13.7M
Q4 24
$614.7M
$60.7M
Q3 24
$507.6M
$48.9M
Q2 24
$517.8M
$79.7M
Q1 24
$491.2M
$126.7M
Total Assets
ASPN
ASPN
NKTR
NKTR
Q4 25
$406.7M
$280.4M
Q3 25
$491.4M
$301.3M
Q2 25
$525.1M
$207.5M
Q1 25
$555.0M
$256.2M
Q4 24
$895.1M
$303.9M
Q3 24
$782.6M
$308.0M
Q2 24
$748.6M
$343.3M
Q1 24
$698.0M
$396.0M
Debt / Equity
ASPN
ASPN
NKTR
NKTR
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
NKTR
NKTR
Operating Cash FlowLast quarter
$16.1M
$-65.0M
Free Cash FlowOCF − Capex
$13.7M
$-65.0M
FCF MarginFCF / Revenue
33.1%
-298.0%
Capex IntensityCapex / Revenue
6.0%
0.1%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-4.6M
$-208.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ASPN
ASPN
NKTR
NKTR
Q4 25
$16.1M
$-65.0M
Q3 25
$15.0M
$-48.8M
Q2 25
$-3.9M
$-45.7M
Q1 25
$5.6M
$-49.1M
Q4 24
$35.7M
$-46.2M
Q3 24
$20.8M
$-43.9M
Q2 24
$6.8M
$-37.7M
Q1 24
$-17.7M
$-47.9M
Free Cash Flow
ASPN
ASPN
NKTR
NKTR
Q4 25
$13.7M
$-65.0M
Q3 25
$5.9M
$-48.9M
Q2 25
$-16.8M
$-45.8M
Q1 25
$-7.4M
$-49.1M
Q4 24
$20.9M
$-46.6M
Q3 24
$-50.0K
$-44.6M
Q2 24
$-18.0M
$-37.9M
Q1 24
$-43.6M
$-48.0M
FCF Margin
ASPN
ASPN
NKTR
NKTR
Q4 25
33.1%
-298.0%
Q3 25
8.1%
-414.5%
Q2 25
-21.6%
-409.6%
Q1 25
-9.4%
-469.0%
Q4 24
17.0%
-159.9%
Q3 24
-0.0%
-184.9%
Q2 24
-15.3%
-161.3%
Q1 24
-46.1%
-222.0%
Capex Intensity
ASPN
ASPN
NKTR
NKTR
Q4 25
6.0%
0.1%
Q3 25
12.5%
1.0%
Q2 25
16.5%
0.3%
Q1 25
16.5%
0.0%
Q4 24
12.0%
1.6%
Q3 24
17.7%
2.8%
Q2 24
21.1%
0.8%
Q1 24
27.4%
0.7%
Cash Conversion
ASPN
ASPN
NKTR
NKTR
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
3.14×
-6.36×
Q3 24
Q2 24
0.41×
Q1 24

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%

NKTR
NKTR

Segment breakdown not available.

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