Key Takeaways
- After-hours trading saw AMPX shares plummet 27% following the company’s Q1 2026 earnings announcement despite exceeding revenue projections.
- Quarterly revenue reached $28.5 million, representing a 153% year-over-year increase and surpassing analyst estimates of $25.32 million.
- The company reported an earnings per share loss of -$0.04, falling short of the consensus estimate of -$0.0278.
- Full-year 2026 revenue projections were increased to a minimum of $130 million from the previous $125 million forecast.
- The quarter concluded with $62.4 million in cash reserves and a debt-free balance sheet following a ~$20 million Colorado lease settlement.
Amprius Technologies (AMPX) delivered its most robust quarterly revenue performance to date in Q1 2026, yet investors responded with significant selling pressure. Shares plummeted 27.15% to $19.229 during extended trading hours immediately following the earnings announcement.
Amprius Technologies, Inc., AMPX
The company reported quarterly revenue of $28.5 million — marking a substantial 153% increase compared to the year-ago period and representing a 13% sequential improvement over Q4 2025. This performance exceeded Wall Street’s consensus forecast of $25.32 million by approximately 12.7%.
However, profitability metrics told a different story. AMPX disclosed an EPS loss of $0.04, significantly worse than the -$0.0278 loss analysts had anticipated. This 43.88% shortfall became the primary catalyst for the sharp after-hours decline.
Profitability metrics also showed deterioration, with gross margins contracting to 20% from the previous quarter’s 24%. CFO Ricardo Rodriguez attributed this compression to elevated overhead expenses associated with the company’s SiMaxx platform — approximately $3 million in fixed costs generated against merely $618,000 in SiMaxx-related revenue.
The SiCore battery product line has emerged as the dominant revenue driver, representing 97% of total product revenue during the quarter. The company is actively transitioning away from its legacy SiMaxx offerings.
Defense Sector Momentum and Customer Expansion
CEO Thomas Stepien highlighted several positive developments on the customer acquisition front. Three defense and unmanned aerial systems (UAS) clients utilizing SiCore battery technology recently secured multimillion-dollar contract awards, providing enhanced visibility into the company’s future order pipeline.
The Defense Innovation Unit (DIU) partnership has expanded for the third consecutive time, bringing the total contract value to $18.1 million. The most recent expansion encompasses delivery of three varieties of silicon anode cylindrical cells plus four standard-format pouch cells.
In the commercial sector, AMPX secured a new partnership with a light electric vehicle manufacturer based in China. This customer committed to a $21 million multi-quarter purchase agreement for batteries destined for two- and three-wheeled electric vehicles — representing a strategic diversification beyond the company’s defense-focused customer base.
Geographic revenue distribution for Q1 showed EMEA contributing 58%, while North America and Asia Pacific each accounted for 21%. North America’s portion expanded “meaningfully” compared to the previous quarter.
Upgraded Outlook and Strengthened Financial Position
Notwithstanding the negative after-hours market reaction, company leadership elevated their full-year 2026 revenue forecast to a minimum of $130 million — representing a $5 million increase from the prior $125 million target. Adjusted EBITDA expectations remain unchanged at a minimum of $4 million, while the anticipated net loss is capped at $8 million, translating to less than $0.06 per share.
Capital expenditure for the year is projected to remain below $10 million, with funding largely covered through the DIU contract.
The company executed a major balance sheet restructuring during Q1. Amprius allocated approximately $20 million to eliminate its Colorado facility lease obligation — which would have otherwise represented over $110 million in future commitments — resulting in a clean balance sheet with $62.4 million in cash and zero outstanding debt.
Management also unveiled plans to exchange outstanding public warrants for common shares, a strategic move designed to eliminate warrant overhang and streamline the capital structure.
Research and development expenditures totaled $3.8 million while selling, general, and administrative costs reached $8.6 million for the quarter. The GAAP net loss amounted to $5 million.
The dramatic after-hours decline follows an extraordinary rally that saw the stock appreciate roughly 840% over the trailing twelve months, with shares reaching a 52-week peak of $22.80.
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