Amprius Technologies Earnings Call Signals Profitable Growth Path

Amprius Technologies Inc ((AMPX)) has held its Q4 earnings call. Read on for the main highlights of the call.

Amprius Technologies Inc. struck an optimistic tone on its latest earnings call, pairing record revenue and sharply improved margins with growing proof of its technical edge in silicon-anode batteries. Management acknowledged near-term profit pressure from a one-off Colorado charge and scaling costs, but framed these as investments on a path toward profitable growth and larger market share.

Record Revenue Momentum

Amprius reported Q4 revenue of $25.2 million, up 18% sequentially and 137% year over year, underscoring strong demand across its customer base. Full-year 2025 revenue reached $73 million, tripling 2024 levels and placing the company on an annualized run-rate above $100 million.

Sharp Turn in Gross Margins

Profitability metrics showed a dramatic turnaround as Q4 gross margin climbed to 24%, improving nine points quarter over quarter and 45 points year over year. For 2025, gross margin reached 11% versus negative 76% in 2024, signaling better pricing, scale, and manufacturing efficiency.

Technical Leadership in High-Energy Cells

The company highlighted continued product leadership, including a CES Best of Innovation award for a 520 Wh/kg silicon-anode cell, roughly double conventional graphite cells. Its SiCore platform now spans 22 cell designs across chemistries and formats, with three new cells introduced in Q4 and one retired.

NDAA Compliance and Supply Chain Build-Out

Regulatory and supply chain progress was another theme, with a DIU contract expanded to $14.8 million to accelerate NDAA-compliant pilot and manufacturing lines. Amprius reported that its internal component scorecard is now 11-for-11 NDAA-compliant and added three Korean contract manufacturers plus its first U.S. partner, Nanotech Energy.

Expanding Customer Base and Notable Wins

Commercial traction broadened as the customer count rose above 550, up from 444, implying more than 100 new customers in the quarter. Management spotlighted a platform win with Nokia Drone Networks and ongoing momentum with names like Airbus/Alto and L3Harris, reinforcing its positioning in aviation and defense.

Balance Sheet Strength and Capital Moves

Amprius ended the period with about $90.5 million in cash and no debt, providing flexibility to fund growth. It completed an aftermarket financing facility, terminated its ATM program, and exited the Colorado facility with a settlement expected to materially shrink future balance-sheet liabilities.

Pathway to Profits and Long-Term Scale

Management laid out a margin roadmap anchored by its 2026 baseline outlook, targeting at least $125 million in revenue and the first full year of positive adjusted EBITDA of at least $4 million. Longer term, Amprius aims for more than $600 million of contracted capacity by decade-end, with gross margins above 30% and EBITDA margins near 20%.

Cost Discipline and Efficiency Measures

Operating expenses in Q4 were $8.9 million excluding a one-time $22.5 million Colorado charge, underscoring efforts to keep overhead contained while scaling. The company emphasized a resource-conscious culture and expects that shutting the Colorado site and reallocating R&D should lower go-forward operating costs.

GAAP Losses Mask Underlying Improvement

Q4 operating loss was $25.4 million, heavily influenced by the $22.5 million Colorado decision, leading to a GAAP net loss of $24.3 million or $0.18 per share. Without that charge, operating loss would have been $2.9 million and GAAP net loss just $1.9 million, roughly $0.01 per share, indicating narrowing underlying losses.

Adjusted EBITDA Still in the Red

Despite revenue growth and better gross margins, Q4 adjusted EBITDA remained negative at $1.8 million versus a $1.4 million loss in the prior quarter. Management noted that various adjustments and Colorado-related costs distorted near-term EBITDA trends, while arguing that the core business is tracking toward breakeven.

Cash Hit From Colorado Exit

The Colorado lease settlement will reduce Q1 cash by about $20 million as Amprius fully exits that facility. In exchange, the deal will cut right-of-use assets by $13.4 million and trim near-term lease-related liabilities by $33.2 million, simplifying the balance sheet and future commitments.

Operational Complexity and Scaling Challenges

Scaling operations is becoming more complex, with 22 cell models spread across multiple contract manufacturers and 11 NDAA-compliant internal components. Remaining work includes locking in multiyear supplier agreements and translating technical qualifications into consistent high-volume deliveries.

Early-Stage Orders and Market Share Headroom

Management cautioned that many recent customer wins are still at evaluation volumes, often supplied from the Fremont pilot line. With reported share still in the single digits in its target markets, Amprius faces the heavy lifting of converting trials into recurring, large-scale production orders.

Working Capital and Inventory Build

Operating cash outflow in Q4 totaled $13.5 million, driven largely by a $1.8 million rise in receivables and a $2.1 million inventory build. While consistent with preparing for growth, these working capital demands could pressure near-term free cash flow if revenue ramps more slowly than expected.

Contract Manufacturing and Geopolitics

The company remains reliant on contract manufacturers, even as it adds NDAA-compliant partners in Korea and the U.S. Balancing customer preferences on country-of-origin for batteries, between U.S. and allied sources, may create short-term capacity or pricing frictions as the network scales.

Forward-Looking Guidance and Outlook

For 2026, Amprius guided to at least $125 million in revenue with adjusted EBITDA of at least $4 million and a net loss near $8 million, assuming moderate share count growth and CapEx below $10 million. Management expects external contract funding to cover most capital needs and reiterated long-term goals for sizable contracted capacity and materially higher margins by decade-end.

The earnings call painted a picture of a company moving quickly up the revenue curve while working through the growing pains of scale, capital allocation, and supply chain design. Investors will be watching whether Amprius can convert its expanding customer list and technical wins into sustained, profitable production without overextending its balance sheet or operational footprint.