SES AI (SES) Q4 2025 earnings review
Revenue Multiplies 10x, But Pivot to Hardware Crushes Margins
SES AI achieved its $21 million FY25 revenue target, completing a massive leap from $2 million in 2024. However, the quality of this revenue fundamentally shifted. The high-margin 'software-and-services' narrative heavily promoted in early 2025 collided with reality as gross margins collapsed from 79% in Q1 to just 11.3% in Q4. This compression was driven by the integration of UZ Energy and a shift toward lower-margin Energy Storage Systems (ESS) hardware. While a $200 million cash pile and a 40% YoY reduction in Q4 operating expenses provide a comfortable runway, FY26 guidance explicitly confirms SES is transitioning into a hardware business, projecting ~15% blended margins as it pushes into ESS and defense drones.
🐂 Bull Case
Management is aggressively right-sizing the business. Q4 operating expenses dropped 40% YoY to $18.2 million, and cash burn is narrowing significantly, extending the $200 million liquidity runway into 2028.
After years as a pre-revenue R&D shop, SES successfully operationalized three business units. FY26 guidance projects $30-$35 million in revenue, a healthy 43-67% acceleration.
🐻 Bear Case
Early 2025 optimism around 80% SaaS-like margins has vanished. FY26 guidance of ~15% gross margin indicates the company will be valued as a low-margin hardware producer rather than an AI platform.
Despite strong annual growth, Q4 revenue of $4.6 million represented a sharp sequential decline from Q3's $7.1 million, caused by logistics delays that pushed $1.5 million into 2026.
⚖️ Verdict: ⚪
Neutral. The commercial traction and ruthless OpEx discipline are commendable. However, the severe and permanent contraction in gross margins completely alters the investment thesis, shifting the focus from high-margin AI software to a capital-intensive hardware grind.
Key Themes
The Margin Reality Check
In early 2025, management touted an 'asset-light, high-margin software' model powered by Molecular Universe, resulting in a 79% gross margin in Q1. By Q4, this narrative broke: gross margins compressed violently to 11.3%. The driver is the UZ Energy acquisition, which floods the top line with low-margin ESS hardware sales. With FY26 margins guided to ~15%, investors must reset their long-term profitability models.
NDAA-Compliant Drone Expansion
SES is capitalizing on macroeconomic and geopolitical shifts by providing US defense drones with a non-Chinese battery supply chain. The company is converting its EV B-sample line in Chungju, South Korea, to manufacture 10Ah pouch cells. With military applications strictly requiring NDAA compliance, SES projects drone gross margins will exceed 20%.
Energy Storage Systems (ESS) Integration
The acquisition of UZ Energy gives SES an immediate footprint in the global ESS market. Management is integrating the Molecular Universe 'Predict' feature into UZ hardware to achieve zero-drift State of Charge (SoC) and battery health monitoring. A recent $20 million multiyear contract underscores the traction of this hardware-software bundle.
Logistics Expose Hardware Vulnerabilities
Hardware businesses suffer physical bottlenecks. In Q4, SES suffered logistics constraints that delayed shipments and pushed $1.5 million of revenue into Q1 2026. This sequential deceleration from Q3 ($7.1M) to Q4 ($4.6M) highlights the supply chain execution risks SES now faces compared to its earlier R&D software focus.
Molecular Universe Driving Material Joint Ventures
The proprietary Molecular Universe AI platform has discovered six novel electrolytes now being tested by over 40 customers. Instead of just selling software access, SES is using its JV with Hisun (leveraging their 150,000-ton capacity) to physically manufacture and sell these breakthroughs in a capex-light model.
Disparate Focus Across Verticals
SES is simultaneously chasing EV partnerships, ESS hardware deployments in the Middle East/Australia, drone battery manufacturing for defense, and AI material discoveries. This multi-pronged approach risks diluting management focus and operational resources across distinctly different sales cycles and supply chains.
Other KPIs
A remarkable 40% YoY decrease from $30.4M in 24Q4. Management is consistently walking down costs, scaling back R&D from EV moonshots to focus on commercialization. This operating leverage ensures the $200 million liquidity pile is protected while the revenue engine scales.
SES exited the year at the top end of its target range ($195M - $200M). With net cash used in operations dropping 12% YoY to $58.4 million, the company has secured a clear runway into at least 2028 without requiring immediate capital markets activity.
Improved by 23% from a loss of $81.5 million in 2024. This reflects the transition from heavy R&D burn into early-stage commercial leverage. As the revenue base grows into the mid-$30M range next year, this metric should see continued structural improvements.
Guidance
Accelerating. Implies 43% to 67% YoY growth versus the $21.0 million achieved in 2025. This will be driven predominantly by full-year contributions from UZ Energy (ESS) and expanding drone battery volumes out of the converted Korean facility.
Decelerating. A complete reversal from the 54% full-year average in 2025. The mix shift toward physical ESS hardware (~15% margin) and materials (10-20% margin) permanently re-bases the company's margin profile, though drone cells (>20%) may offer slight upside.
Accelerating cost discipline. Following a 15% reduction in 2025, SES plans to carve out another 15% in FY26. This signals an end to the build-out phase of the Molecular Universe platform and a pivot to monetizing existing tech.
Stable. Reinforces the 'capex-light' narrative. The primary spend will be converting the South Korean facility to NDAA-compliant drone cells and evaluating Southeast Asian contract manufacturing options.
Key Questions
Margin Bridge for ESS
Gross margins collapsed to 11.3% due to ESS product integration. Can you outline the specific roadmap and timeline for expanding ESS margins via the high-margin Molecular Universe software attach rates?
Logistics and Hardware Risks
Q4 saw $1.5 million of revenue pushed due to logistics constraints. As you scale physical hardware across drones and ESS, what supply chain redundancies are being implemented to prevent ongoing quarterly revenue lumpiness?
Drone Battery Commitments
You are converting the South Korean EV lines for 10Ah drone cells. Are there firm, multi-year purchase orders underpinning this conversion, or is this being built on spec for the defense market?