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Side-by-side financial comparison of Atara Biotherapeutics, Inc. (ATRA) and Expion360 Inc. (XPON). Click either name above to swap in a different company.

Expion360 Inc. is the larger business by last-quarter revenue ($2.2M vs $1.6M, roughly 1.4× Atara Biotherapeutics, Inc.). On growth, Expion360 Inc. posted the faster year-over-year revenue change (11.8% vs -95.1%). Over the past eight quarters, Expion360 Inc.'s revenue compounded faster (51.1% CAGR vs -75.9%).

Atara Biotherapeutics, Inc. is a clinical-stage biotechnology company focused on developing allogeneic T-cell immunotherapies for patients with unmet medical needs across oncology, autoimmune disease, and infectious disease indications. It operates primarily in North America, Europe, and Asia-Pacific, partnering with research institutions to advance its novel treatment pipeline.

Expion360 Inc. is a provider of high-performance lithium iron phosphate (LFP) battery solutions and supporting energy storage products. Its core customer segments cover recreational vehicle owners, marine users, off-grid lifestyle enthusiasts and residential users across the U.S. market, delivering safe, durable and low-carbon energy storage options.

ATRA vs XPON — Head-to-Head

Bigger by revenue
XPON
XPON
1.4× larger
XPON
$2.2M
$1.6M
ATRA
Growing faster (revenue YoY)
XPON
XPON
+106.9% gap
XPON
11.8%
-95.1%
ATRA
Faster 2-yr revenue CAGR
XPON
XPON
Annualised
XPON
51.1%
-75.9%
ATRA

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ATRA
ATRA
XPON
XPON
Revenue
$1.6M
$2.2M
Net Profit
$-4.4M
Gross Margin
-14.8%
Operating Margin
-234.4%
Net Margin
-199.9%
Revenue YoY
-95.1%
11.8%
Net Profit YoY
73.2%
-1663.2%
EPS (diluted)
$-0.45

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
ATRA
ATRA
XPON
XPON
Q4 25
$1.6M
$2.2M
Q3 25
$3.5M
$2.4M
Q2 25
$17.6M
$3.0M
Q1 25
$98.1M
$2.0M
Q4 24
$32.8M
$2.0M
Q3 24
$40.2M
$1.4M
Q2 24
$28.6M
$1.3M
Q1 24
$27.4M
$971.9K
Net Profit
ATRA
ATRA
XPON
XPON
Q4 25
$-4.4M
Q3 25
$-4.3M
$722.8K
Q2 25
$2.4M
$-1.4M
Q1 25
$38.0M
$-1.2M
Q4 24
$-12.7M
$-251.6K
Q3 24
$-21.9M
$-8.8M
Q2 24
$-19.0M
$-2.2M
Q1 24
$-31.8M
$-2.2M
Gross Margin
ATRA
ATRA
XPON
XPON
Q4 25
-14.8%
Q3 25
22.7%
Q2 25
20.8%
Q1 25
24.5%
Q4 24
22.1%
Q3 24
12.1%
Q2 24
25.5%
Q1 24
22.9%
Operating Margin
ATRA
ATRA
XPON
XPON
Q4 25
-234.4%
Q3 25
-103.5%
-125.4%
Q2 25
18.2%
-45.2%
Q1 25
39.5%
-56.0%
Q4 24
-37.3%
-59.5%
Q3 24
-54.1%
-138.7%
Q2 24
-63.7%
-131.4%
Q1 24
-114.2%
-202.4%
Net Margin
ATRA
ATRA
XPON
XPON
Q4 25
-199.9%
Q3 25
-124.6%
30.2%
Q2 25
13.6%
-45.8%
Q1 25
38.7%
-56.2%
Q4 24
-38.8%
-12.7%
Q3 24
-54.5%
-634.4%
Q2 24
-66.5%
-173.7%
Q1 24
-116.1%
-225.6%
EPS (diluted)
ATRA
ATRA
XPON
XPON
Q4 25
$-0.45
Q3 25
$-0.32
$0.10
Q2 25
$0.19
$-0.41
Q1 25
$3.50
$-0.37
Q4 24
$0.27
$65.02
Q3 24
$-2.93
$-24.55
Q2 24
$-3.10
$-30.20
Q1 24
$-5.65
$-31.30

Balance Sheet & Financial Strength

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

Metric
ATRA
ATRA
XPON
XPON
Cash + ST InvestmentsLiquidity on hand
$8.5M
$3.0M
Total DebtLower is stronger
$197.2K
Stockholders' EquityBook value
$-38.5M
$6.5M
Total Assets
$20.2M
$8.1M
Debt / EquityLower = less leverage
0.03×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ATRA
ATRA
XPON
XPON
Q4 25
$8.5M
$3.0M
Q3 25
$13.7M
$4.3M
Q2 25
$22.3M
$684.9K
Q1 25
$13.8M
$1.1M
Q4 24
$42.5M
$547.6K
Q3 24
$67.2M
$3.3M
Q2 24
$35.3M
$902.3K
Q1 24
$46.2M
$2.3M
Total Debt
ATRA
ATRA
XPON
XPON
Q4 25
$197.2K
Q3 25
$205.6K
Q2 25
$213.6K
Q1 25
$221.8K
Q4 24
$230.2K
Q3 24
$239.9K
Q2 24
$247.7K
Q1 24
$255.4K
Stockholders' Equity
ATRA
ATRA
XPON
XPON
Q4 25
$-38.5M
$6.5M
Q3 25
$-36.6M
$9.0M
Q2 25
$-35.0M
$2.1M
Q1 25
$-55.1M
$3.2M
Q4 24
$-97.3M
$2.5M
Q3 24
$-90.5M
$2.5M
Q2 24
$-110.9M
$2.5M
Q1 24
$-98.3M
$3.7M
Total Assets
ATRA
ATRA
XPON
XPON
Q4 25
$20.2M
$8.1M
Q3 25
$30.2M
$10.7M
Q2 25
$36.9M
$8.6M
Q1 25
$62.0M
$9.2M
Q4 24
$109.1M
$9.1M
Q3 24
$142.7M
$10.1M
Q2 24
$117.3M
$8.8M
Q1 24
$165.3M
$10.0M
Debt / Equity
ATRA
ATRA
XPON
XPON
Q4 25
0.03×
Q3 25
0.02×
Q2 25
0.10×
Q1 25
0.07×
Q4 24
0.09×
Q3 24
0.09×
Q2 24
0.10×
Q1 24
0.07×

Cash Flow & Capital Efficiency

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

Metric
ATRA
ATRA
XPON
XPON
Operating Cash FlowLast quarter
$-50.9M
$-2.4M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
0.0%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ATRA
ATRA
XPON
XPON
Q4 25
$-50.9M
$-2.4M
Q3 25
$-9.8M
$-2.1M
Q2 25
$-7.3M
$-401.0K
Q1 25
$-28.1M
$-1.2M
Q4 24
$-24.5M
$-2.9M
Q3 24
$-4.0M
$-3.2M
Q2 24
$-10.6M
$-1.7M
Q1 24
$-29.6M
$-1.7M
Free Cash Flow
ATRA
ATRA
XPON
XPON
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
$-24.6M
Q3 24
Q2 24
$-10.7M
Q1 24
$-29.7M
$-1.7M
FCF Margin
ATRA
ATRA
XPON
XPON
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
-75.0%
Q3 24
Q2 24
-37.3%
Q1 24
-108.7%
-173.1%
Capex Intensity
ATRA
ATRA
XPON
XPON
Q4 25
0.0%
Q3 25
0.0%
Q2 25
0.0%
Q1 25
0.0%
Q4 24
0.3%
Q3 24
0.0%
Q2 24
0.1%
Q1 24
0.5%
1.1%
Cash Conversion
ATRA
ATRA
XPON
XPON
Q4 25
Q3 25
-2.90×
Q2 25
-3.07×
Q1 25
-0.74×
Q4 24
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

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

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