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    ALAB
    Earnings call· Dec 2025(Q4 FY25)

    Astera Labs Q4 FY25 earnings call ALAB

    Feb 10, 2026 Source

    Executive summary

    Astera Labs Q4 FY25 — Strong Revenue Growth and Strategic Investments in AI Connectivity

    Astera Labs delivered robust Q4 FY25 results, driven by broad-based growth across its AI connectivity portfolio and strategic investments in future technologies. The company is expanding its R&D capabilities and product roadmap to capitalize on a significantly larger AI infrastructure market opportunity, including custom solutions and optical engines. Management anticipates continued strong growth in 2026, supported by new customer engagements and product ramps, while navigating increased operating expenses and a changing product mix.

    Highlights

    5

    • Q4 revenue reached $270.6 million, marking a 17% sequential increase and 92% year-over-year growth.

    • Full-year 2025 revenue was $852.5 million, up 115% compared to the prior year.

    • Scorpio P-Series exceeded 15% of full-year 2025 revenue, surpassing the 10% target.

    • Taurus revenue grew by more than 4x year-over-year in 2025, driven by 400-gig designs.

    • A strategic warrant agreement was signed with Amazon for up to $6.5 billion in products, demonstrating a strong relationship.

    Concerns

    4

    • Q4 non-GAAP gross margin decreased by 70 basis points sequentially to 75.7%, primarily due to a higher mix of hardware sales.

    • Q1 FY26 non-GAAP gross margin is expected to further decline to approximately 74% due to an increased hardware mix.

    • Non-GAAP operating expenses are projected to increase significantly to $112 million to $118 million in Q1 FY26 from $96 million in Q4 FY25, driven by strategic investments.

    • A non-cash charge of approximately 2 points to gross margins per quarter is anticipated starting Q2 FY26 due to the Amazon warrant vesting.

    Guidance & targets

    17
    CategoryTargetConfidence
    Q1 FY26 Revenue
    $286M-$297M
    high materiality
    High
    Q1 FY26 Non-GAAP Gross Margin
    approximately 74%
    high materiality
    High
    Q1 FY26 Non-GAAP Operating Expenses
    $112M-$118M
    medium materiality
    High
    Q1 FY26 Interest Income
    approximately $11M
    low materiality
    High
    Q1 FY26 Non-GAAP Tax Rate
    approximately 12%
    low materiality
    High
    Q1 FY26 Non-GAAP Fully Diluted Share Count
    approximately 184M shares
    low materiality
    High
    Q1 FY26 Non-GAAP Diluted EPS
    $0.53-$0.54
    high materiality
    High
    Scorpio P-Series Shipments
    commencing shipments into at least 2 additional major hyperscalers
    medium materiality
    High
    Scorpio X-Series Revenue Growth
    incrementally grow revenue in the first half of 2026, followed by a transition to high-volume production in the second half of 2026
    medium materiality
    High
    Scorpio X-Series Shipments to New Customer Platforms
    ship initial quantities of Scorpio X-Series to support new customer platforms in the second half of 2026 with volume ramp set for 2027
    medium materiality
    High
    UALink Solution Readiness
    ready to intersect the initial customer platform ramps in 2027
    medium materiality
    High
    Aries Product Line Growth
    continue growing in 2026 and beyond
    medium materiality
    High
    Taurus Growth
    continued growth in 2026
    medium materiality
    High
    Leo CXL Memory Expansion Production
    initial production volumes to commence in the second half of 2026
    medium materiality
    High
    Served Addressable Market (SAM) Expansion
    expand by more than 10x over the next 5 years to reach $25 billion
    high materiality
    High
    Optical for Scale-Up Timing
    somewhere in 2028
    low materiality
    Medium
    Amazon Warrant Non-Cash Charge to Gross Margins
    about 2 points a quarter
    medium materiality
    High

    Operational metrics

    19
    Non-GAAP Operating Expenses
    $96Mup $16M QoQ
    Q4 FY25

    Includes expenses from aiXscale acquisition.

    Non-GAAP Operating Expenses Guidance
    $112M-$118M
    Q1 FY26

    Includes expenses related to an acquihire transaction for Israel Design Center.

    Non-GAAP Operating Margin
    40.2%down 150 bps QoQ
    Q4 FY25

    Decrease primarily due to higher operating expenses.

    Interest Income
    $12M
    Q4 FY25

    Interest income for the quarter.

    Interest Income Guidance
    $11M
    Q1 FY26

    Expected interest income for the first fiscal quarter of 2026.

    Non-GAAP Tax Rate
    13%
    Q4 FY25

    Non-GAAP tax rate for the quarter.

    Non-GAAP Tax Rate Guidance
    12%
    Q1 FY26

    Expected non-GAAP tax rate for the first fiscal quarter of 2026.

    Non-GAAP Fully Diluted Share Count
    181.2M
    Q4 FY25

    Fully diluted share count for the quarter.

    Non-GAAP Fully Diluted Share Count Guidance
    184M
    Q1 FY26

    Expected fully diluted share count for the first fiscal quarter of 2026.

    Non-GAAP Diluted EPS
    $0.58
    Q4 FY25

    Non-GAAP diluted earnings per share for the quarter.

    Non-GAAP Diluted EPS Guidance
    $0.53-$0.54
    Q1 FY26

    Expected non-GAAP diluted earnings per share for the first fiscal quarter of 2026.

    Cash, Cash Equivalents and Marketable Securities
    $1.19B
    end of Q4 FY25

    Total cash and investments at the end of the fiscal quarter.

    Scorpio P-Series Revenue Contribution
    >15%
    FY25

    Exceeded the target of 10% of total revenue for the full year.

    Aries Portfolio Growth
    70%YoY
    2025

    Year-over-year growth for the Aries product portfolio.

    Taurus Revenue Growth
    4xYoY
    2025

    Year-over-year revenue growth for the Taurus product family.

    Served Addressable Market (SAM) Expansion
    >10x
    next 5 years

    Estimated expansion of the served addressable market opportunity for intelligent connectivity platform.

    Merchant Scale-Up AI Fabrics Market Opportunity
    $20B
    annually by 2030

    Projected annual market opportunity for merchant scale-up AI fabrics.

    Optical for Scale-Up Market Opportunity
    more than double
    long-term

    Potential increase in market size due to the transition to optical connectivity for scale-up applications.

    Amazon Warrant Non-Cash Charge
    2 points
    per quarter

    Expected hit to gross margins starting Q2 FY26 due to the vesting of Amazon warrants.

    Industry KPIs

    5
    MetricValueDetails
    Ai data center revenue$270.6MUSD
    Market share commentaryMarket leader
    Design wins socket pipeline10+ customerscount
    Node platform ramp scheduleUALink, PCIe 6, CXL Memory expansion
    Strategic supply agreements customer prepaymentsup to $6.5BUSD

    Deals & partnerships

    4
    Amazonwarrant agreementup to $6.5B7 years

    Follow-on warrant agreement demonstrating strong relationship, for purchase of Smart Fabric Switches, signal conditioning products, and optical engine solutions.

    aiXscaleacquisition

    Acquisition closed during Q4 FY25, contributing to the expansion of R&D organization.

    unnamed acquihireacquihire transaction

    Transaction closed in Q1 FY26 to rapidly scale the recently announced Israel Design Center, bringing in sizable capability and leadership.

    Microsoft, Intel, SAPpartnership

    Partnership to enable customers to evaluate CXL Memory expansion capabilities for specific workloads within Microsoft Azure M-series virtual machines, representing the industry's first publicly announced deployment of CXL attached memory.

    Capital programs

    1
    Advanced Design Center in Israelunderway
    Start: Q1 FY26

    Benefit: accelerate development of cutting-edge, high-bandwidth and custom AI fabrics and emerging AI inference technology

    Significant expansion in global engineering operations through the establishment of an advanced design center in Israel, supported by an acquihire transaction in Q1 FY26.

    Risks & headwinds

    3
    Higher mix of hardware sales impacting gross marginQ4 FY25, Q1 FY26

    Q4 non-GAAP gross margin down 70 bps QoQ to 75.7%; Q1 FY26 non-GAAP gross margin expected ~74%.

    Increased operating expenses due to strategic investmentsQ1 FY26

    Q1 FY26 non-GAAP OpEx expected $112M-$118M, up from $96M in Q4 FY25.

    Mitigation: Investments are strategic to capitalize on large revenue opportunities and expand market share.

    Non-cash charge from Amazon warrant agreementstarting Q2 FY26

    Approximately 2 points hit to gross margins per quarter.

    Mitigation: This is a non-cash accounting impact related to a strategic customer relationship.

    Q&A highlights

    7

    What is the visibility on UALink acceptance for next-gen designs, especially with the Amazon warrant, and how does it mix with custom connectivity like NVLink Fusion?

    Management confirmed AWS and AMD public announcements supporting UALink for 2027 ramps. They noted the NVLink Fusion opportunity is also meaningful, with Astera Labs chosen as a partner by both Amazon and NVIDIA. The revenue opportunity for custom solutions like NVLink Fusion is anticipated to be similar to a UALink switch, as it attaches one-to-one per accelerator. The Amazon warrant agreement, for up to $6.5 billion in products, demonstrates a strong relationship.

    “both Amazon, the hyperscaler as well as NVIDIA have chosen Astera as a partner. And that's a very important statement in terms of the trust that they place in the Astera Labs.”

    asked by Blayne Curtis · answered by Jitendra Mohan

    2 min read6 chapters

    Detailed Narrative

    01

    AI Infrastructure Market Trends

    Astera Labs highlighted robust secular trends within the AI and cloud infrastructure market, driven by exceptionally strong CapEx spending. Hyperscalers like Google and AWS are guiding nearly $400 billion in total CapEx for 2026, which is benefiting Astera Labs in both the near and long term. The company estimates its served addressable market opportunity will expand by more than 10x over the next five years, reaching $25 billion, encompassing various product lines and applications.

    02

    Product Portfolio Performance and Outlook

    The Scorpio P-Series exceeded 15% of 2025 revenue and is expected to see continued growth in 2026, including shipments to at least two new major hyperscalers. The Scorpio X-Series is projected for incremental revenue growth in H1 2026, transitioning to high-volume production in H2 2026, with a full volume ramp in 2027. Aries PCIe 6 solutions contributed robust growth, with the product line expected to continue growing in 2026 and beyond. Taurus revenue grew over 4x in 2025, driven by 400-gig designs, with 800-gig platforms anticipated as the next growth catalyst.

    03

    CXL and UALink Adoption

    Astera Labs announced a significant partnership with Microsoft, Intel, and SAP to enable CXL Memory expansion evaluation within Microsoft Azure M-series virtual machines. This initiative represents the industry's first publicly announced deployment of CXL attached memory, with initial production volumes expected in H2 2026. The UALink ecosystem is also gaining traction, with public roadmap announcements from AWS and AMD, and Astera Labs expects to be ready for initial customer platform ramps in 2027.

    04

    Strategic Investments and Market Expansion

    To capitalize on broadening revenue opportunities, Astera Labs is strategically investing in its team and capabilities, including establishing an advanced design center in Israel. This expansion aims to accelerate the development of cutting-edge, high-bandwidth, and custom AI fabrics. The company's roadmap includes technology enhancements to its core AI fabric, signal conditioning, and memory controller portfolios, as well as expansion into custom connectivity solutions and optical engines.

    05

    Custom Connectivity and Optical Solutions

    Astera Labs is expanding into custom connectivity solutions, such as supporting NVIDIA's NVLink Fusion scale-up architecture for hybrid racks, which represents a meaningful opportunity. The company is also actively developing optical connectivity engines for scale-up networking, anticipating that this transition could more than double the merchant scale-up switching opportunity. Initial deployments for optical scale-up are expected around 2028, with copper and optical links coexisting.

    06

    Leadership Transition

    Mike Tate will transition from his CFO role to a full-time strategic advisor, reporting to the CEO. Desmond Lynch will join Astera Labs as the new CFO, effective March 2. This leadership change is intended to support the company's next phase of growth and ensure a smooth transition, leveraging Desmond's semiconductor financial experience.

    AI-generated summary of the company’s earnings call. Not investment advice.