AMPXMEDIUM SIGNALOPPORTUNITY10-K

AMPX demonstrated strong business momentum with customer engagements nearly doubling from over 260 to over 500 while strengthening its balance sheet through substantial cash position growth.

The dramatic expansion in customer base indicates accelerating market adoption of AMPX's lithium-ion batteries across aviation applications, while partnerships with major players like Airbus and BAE Systems provide validation. The company's shift in language from serving "aviation, EV and LEV industries" to focusing on "mobility applications, including aviation, ground and marine vehicles" suggests a strategic pivot toward higher-growth aviation segments.

Comparing 2026-03-06 vs 2025-03-20View on EDGAR →
FINANCIAL ANALYSIS

AMPX's financial position strengthened meaningfully across key balance sheet metrics, with current assets growing substantially and cash reserves increasing by 64% to $90.5M. The company increased investments in growth, with R&D expenses rising 28% and SG&A expenses up 23%, while capital expenditures grew modestly to $4.4M. This financial profile suggests a company investing for expansion while maintaining strong liquidity to support its rapidly growing customer base.

FINANCIAL STATEMENT CHANGES
Current Assets
Balance Sheet
+83.9%
$68.8M$126.4M

Current assets grew 83.9% — improving short-term liquidity or inventory/receivables build.

Cash & Equivalents
Balance Sheet
+64%
$55.2M$90.5M

Cash position surged 64% — strong cash generation or capital raise providing significant financial cushion.

Stockholders Equity
Balance Sheet
+49.4%
$69.5M$103.8M

Equity base grew 49.4% — retained earnings accumulation or equity issuance strengthening the balance sheet.

Capital Expenditure
Cash Flow
+37.2%
$3.2M$4.4M

Capital expenditure jumped 37.2% — major investment cycle underway; assess returns on deployment.

Total Assets
Balance Sheet
+29.5%
$121.1M$156.9M

Asset base grew 29.5% — expansion through organic growth, acquisitions, or capital deployment.

R&D Expense
P&L
+28.4%
$7.3M$9.4M

R&D investment increased 28.4% — signals commitment to future product development, though near-term margin impact.

SG&A Expense
P&L
+22.6%
$18.7M$23.0M

SG&A increased modestly — likely reflects growth-related hiring or sales expansion investment.

LANGUAGE CHANGES
NEW — 2026-03-06
PRIOR — 2025-03-20
ADDED
The registrant had 137,019,004 sh ares of common stock outstanding as of February 27, 2026.
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 87 Item 13.
develops, manufactures and markets lithium-ion batteries for mobility applications, including aviation, ground and marine vehicles.
Currently, our batteries are primarily used for existing and emerging aviation applications, including unmanned aerial systems or UAS , such as drones and high-altitude pseudo satellites or HAPS .
Our batteries and their performance specifications have been tested and validated for application by various customers, including AALTO Airbus, AeroVironment, BAE Systems, Kraus Hamdani Aerospace, Nokia Drone Networks, Nordic Wing, Teledyne FLIR and the U.S.
Our total customer engagements since inception grew to over 500 customers with shipments to hundreds of customers during the year ended December 31, 2025.
In addition, from our inception through December 31, 2025, we have shipped over 4.2 million battery cells, which have enabled mission critical applications.
As of December 31, 2025, we had access, through our manufacturing supply agreements with our global contract manufacturers, including our participation in a consortium of South Korean companies that contribute capabilities across the lithium-ion battery value chain (the Amprius Korea Battery Alliance ), to annual production exceeding 2.0 GWh of SiCore batteries in pouch, cylindrical and prismatic formats.
These agreements provide us an opportunity to scale production and ship a large volume of SiCore batteries to our customers.
During 2025, we manufactured our SiMaxx batteries in our facility in Fremont, California.
REMOVED
Security Ownership of Certain Beneficial Owner and Management and Related Stockholder Matters 83 Item 13.
Business Overview We develop, manufacture and market lithium-ion batteries for mobility applications, including the aviation, electric vehicle ( EV ) and light electric vehicle ( LEV ) industries.
Currently, our batteries are primarily used for existing and emerging aviation applications, including unmanned aerial systems ( UAS ), such as drones and high-altitude pseudo satellites ( HAPS ).
Our batteries and their performance specifications have been tested and validated for application by various customers, including our longtime partners such as AALTO Airbus, AeroVironment, BAE Systems, Kraus Hamdani Aerospace, Teledyne FLIR and the U.S.
Our total customer engagements since inception grew to over 260 with shipments to 235 customers during the year ended December 31, 2024.
In addition, from our inception through December 31, 2024, we have shipped over 800,000 units of batteries, which have enabled mission critical applications.
We currently offer high performance silicon anode batteries under the following product platforms: (i) SiCore and (ii) SiMaxx.
We entered into manufacturing supply agreements with three global contract manufacturing companies, which provided us an opportunity to rapidly scale production and ship a large volume of SiCore batteries to our customers.
As of December 31, 2024, we had access, through our manufacturing supply agreements with our global contract manufacturers, to annual production of up to 800 MWh of SiCore batteries in pouch form and up to 1 GWh of SiCore batteries in cylindrical form.
Our SiMaxx batteries are currently manufactured at our facility in Fremont, California.
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