A10 Networks, Inc. (ATEN) | The Buildout — AI Infrastructure

——Mkt cap — · 52-wk —–— · YTD — · delayed
Updated Aug 12, 2026Q1 FY2026 reviewed
A10 Networks builds application delivery and security infrastructure that sits in front of AI workloads.
Q2 revenue +15.5% y/y
$80.1 million; fourth quarter of double-digit growth in last five.
Product growth ~25%
Analyst characterized Q2 product growth ~25%; management did not dispute.
FY26 guidance raised
Revenue view raised to 12–14%; EPS growth raised to 14–16%.
37% single customer
Customer A was 37% of Q1 revenue, up from 15% a year earlier.
The Buildout Takeaway
A10's raised guidance and product momentum show AI-linked demand reaching the networking layer. The concern is breadth: the largest disclosed end customer is tied to a rollout that management says will eventually complete, and distribution-channel concentration has spiked alongside it.
Analyst coverage
20 analysts·11 Buy9 Hold0 Sell
Coverage is thin — only 4 price estimates, so no target is shown
Management guidance
FY2026 revenue growth 12% to 14% • EPS growth 14% to 16% • Adjusted EBITDA margin 28% to 30% (last stated) • Free cash flow to grow year over year from approximately $65 million in 2025
Important: The Buildout is a data analytics platform. Content is generated by algorithms and AI agents using public filings, earnings transcripts, and market data. This is not personalized investment advice.
Our View

The Verdict

A10 Networks builds the application delivery and security layer that sits between applications and the network: load balancing, traffic management, and DDoS protection. That layer matters more as AI workloads raise traffic volumes, widen the attack surface, and tighten latency requirements. A10 is not an AI-model company; it supplies the plumbing AI traffic moves through, and it has extended that role into AI security with the TrojAI acquisition.

Market Cap—
Revenue (TTM)$300M
Revenue Growth+12.1%
EBITDA Margin (TTM)22.5%
Net Cash$151M
Earnings Beats7 of 7
P/E (TTM)—
EV/EBITDA (TTM)—

What We Like

  • Q2 revenue grew 15.5% year over year to $80.1 million, the fourth quarter of double-digit growth in the last five.
  • Product revenue was $49 million, or 61% of Q2 revenue; Q1 product revenue grew 22.3%, and Q2 product growth was characterized as about 25%.
  • Management raised FY2026 revenue growth guidance to 12% to 14% and EPS growth guidance to 14% to 16%.
  • Microsoft expanded into a long-term partnership with mutual performance commitments; management says there are no pre-buys.
  • Non-GAAP gross margin was 80.3% in Q2, adjusted EBITDA margin was 30.5%, and free cash flow was $26.9 million.

What We’re Watching

  • Customer A was 37% of Q1 revenue, up from 15% a year earlier; Q2 was expected to be a similar number while the rollout completes.
  • Sales through a single distribution channel reached 38% of Q1 revenue and 40% of gross accounts receivable at March 31, 2026.
  • Deferred revenue fell from $147.2 million at Q1 to $104.8 million at Q2, with no explanation on the call.
  • Memory and component lead times and allocation constraints are expected to last many more quarters; Lanner and AEWIN manufacturing is Taiwan-based.
Bottom Line

The operating thesis is strengthening on the disclosed numbers: growth stepped up, guidance was raised, and the Microsoft relationship broadened. It is also getting more concentrated, with one end customer and one distribution channel holding unusually large shares, and with deferred revenue and the August 5 8-K unresolved. The key open question is whether non-Microsoft enterprise demand converts later in 2026 or early 2027 before the current rollout completes.

Next upThe Q2 FY2026 10-Q is the next verification point; it should show whether Customer A remains near 37% of revenue and what drove the deferred revenue decline. The August 5, 2026 8-K items 1.01 and 3.02 also need to be read in full to determine whether the material agreement is the Microsoft expansion and what the equity issuance is.
Last Quarter — Q1 FY2026

Earnings Beat

A10 reported Q2 FY2026 revenue of $80.1 million, up 15.5% year over year, with non-GAAP gross margin of 80.3%. Product revenue was $49 million, or 61% of revenue, and adjusted EBITDA was $25.4 million, or 30.5% of revenue.

MetricQ1 FY2026Q4 FY2025Q1 FY2025YoY
Revenue$75M$80M$66M+13.5%
Gross margin80.3%78.7%79.7%+60bps
EBITDA$18M$19M$12M+43.4%
EPS$0.16$0.14$0.13+30.0%
Product revenue$49.0 million (61% of revenue)$44.0 million (59% of revenue)n/aQ2 product growth characterized as ~25% y/y
We now expect 2026 full-year revenue to increase by 12% to 14% on a year over year basis up from 10% to 12%. And EPS growth of 14% to 16% up from 12% to 14% previously.— Dhrupad Trivedi, Chief Executive Officer, August 5, 2026

Management tone: Management's tone shifted from caution to confidence. On the Q1 call, management held guidance pending more evidence; on the Q2 call, it raised revenue and EPS guidance after the momentum it said it would wait for appeared. Management remained specific about supply-chain constraints and concentration rather than minimizing them.

Management Guidance

Management raised 2026 full-year revenue growth guidance to 12% to 14%, up from 10% to 12%, and EPS growth to 14% to 16%, up from 12% to 14%. Adjusted EBITDA margin was last stated at 28% to 30%. The CFO reiterated that full-year free cash flow should grow year over year from approximately $65 million in 2025.

Business Trajectory

Trajectory

Year-over-year revenue growth increased from 13.4% in Q1 to 15.5% in Q2, with Q2 revenue at $80.1 million; the sequential path was uneven after Q1 dipped from Q4's $80.4 million. Product revenue is doing the work at $49 million in Q2, or 61% of total, while services at $31.1 million lag. Non-GAAP gross margin held at 80.3% and adjusted EBITDA margin at 30.5%. Americas revenue was 68% of Q2, which management attributes to AI infrastructure build-outs.

Revenue & Margin Trajectory
RevenueGross margin$0$50$57M$55M$64M$60M$54M$61M$60M$49M$61M$60M$62M$50M$49M$53M$60M$54M$52M$57M$63M$55M$59M$65M$71M$63M$68M$72M$78M$58M$66M$58M$70M$61M$60M$67M$74M$66M$69M$75M$80M$75M75%80%Q2'16Q3Q4Q1'17Q2Q3Q4Q1'18Q2Q3Q4Q1'19Q2Q3Q4Q1'20Q2Q3Q4Q1'21Q2Q3Q4Q1'22Q2Q3Q4Q1'23Q2Q3Q4Q1'24Q2Q3Q4Q1'25Q2Q3Q4Q1'26
RevenueGross margin$0$50$57M$55M$64M$60M$54M$61M$60M$49M$61M$60M$62M$50M$49M$53M$60M$54M$52M$57M$63M$55M$59M$65M$71M$63M$68M$72M$78M$58M$66M$58M$70M$61M$60M$67M$74M$66M$69M$75M$80M$75M75%80%Q2'16Q3Q4Q1'17Q2Q3Q4Q1'18Q2Q3Q4Q1'19Q2Q3Q4Q1'20Q2Q3Q4Q1'21Q2Q3Q4Q1'22Q2Q3Q4Q1'23Q2Q3Q4Q1'24Q2Q3Q4Q1'25Q2Q3Q4Q1'26
Gross margin as reported.
Share Price — 12 Months
$20$40$052-wk high $37Aug '25NovFeb '26MayAug '26
52-week range $17–$37.
Share Price — 12 Months
$20$40$052-wk high $37Aug '25NovFeb '26MayAug '26
52-week range $17–$37.
The Numbers

The Model

The model projects FY+1 revenue of $328 million and EBITDA of $77 million, a 23.5% margin, followed by FY+2 revenue of $375 million and EBITDA of $92 million, a 24.5% margin. The near-term is anchored in current product momentum and management's raised FY2026 revenue growth guidance; the FY+2 step assumes services follow product revenue roughly four quarters later and enterprise pipeline deals begin converting.

Revenue & EBITDA Projections
REVENUE$291M$328M$375MFY25FY+1 (E)FY+2 (E)EBITDA & MARGIN$62M$77M$92M24.5%FY25FY+1 (E)FY+2 (E)
REVENUE$291M$328M$375MFY25FY+1 (E)FY+2 (E)EBITDA & MARGIN$62M$77M$92M24.5%FY25FY+1 (E)FY+2 (E)
Solid bars are reported actuals; outlined bars are model projections — not company guidance.
MetricFY2025Next FY (E)Following FY (E)
Revenue$291M$328M$375M
YoY Growth—+12.9%+14.3%
EBITDA$62M$77M$92M
EBITDA Margin21.3%23.5%24.5%

Projections are the median of 5 independent model runs. The model’s revenue sits 3.2% above analyst consensus.

Management raised 2026 full-year revenue growth guidance to 12% to 14%, up from 10% to 12%, and EPS growth to 14% to 16%, up from 12% to 14%. Adjusted EBITDA margin was last stated at 28% to 30%. The CFO reiterated that full-year free cash flow should grow year over year from approximately $65 million in 2025.

What Could Go Right — and Wrong

What good looks like
  • Microsoft broadens into multiple product sets after the initial rollout, so revenue does not step down when the rollout completes.
  • Non-Microsoft enterprise design wins land in late 2026 or early 2027, diluting customer concentration.
  • Service revenue accelerates on the disclosed four-quarter lag from product strength.
  • TrojAI native AI security products release within the 1–2 year window and sell standalone.
  • Memory and component pressures ease faster than expected, supporting gross margin and delivery.
What could go wrong
  • Microsoft rollout completes and revenue steps down before replacement enterprise demand arrives.
  • Service revenue stays flat despite product growth, breaking the lead-indicator assumption.
  • Memory and component costs persist many more quarters, pushing gross margin below the low-80% non-GAAP range.
  • Deferred revenue decline reflects shrinking contracted future revenue, not just timing.
  • The August 5 8-K reveals dilution or terms that pressure existing shareholders.
What’s Next

Looking Ahead

The next twelve months hinge on whether the current large-customer rollout completes without a revenue cliff and whether the enterprise pipeline converts into revenue later in 2026 or early 2027. Management also expects service revenue to begin reflecting current product strength roughly four quarters out, and TrojAI's native AI security products are planned over the next 1–2 years.

Catalysts
  • Q2 FY2026 10-Q filingConcentration and deferred check — Tests whether Customer A remains near 37% and why deferred revenue fell.
  • August 5, 20268-K items 1.01, 3.02 — Tests whether material agreement is the Microsoft expansion and terms of equity issuance.
  • Late 2026 / early 2027Enterprise pipeline conversion — Tests whether large-enterprise design wins show up in reported results.
  • Roughly four quarters outProduct-to-services inflection — Tests whether service revenue follows product strength as management expects.
  • Next 1–2 yearsTrojAI product releases — Tests whether native AI security can be sold standalone.
Numbers

Financials

Annual Summary

MetricFY2024FY2025TTMYoY
Revenue$262M$291M$300M+11.0%
Gross Margin80.4%79.3%79.5%103bps
EBITDA$55M$62M$282M+12.3%
EBITDA Margin21.1%21.3%22.5%+24bps
Net Income$50M$42M$45M-16.0%
Free Cash Flow$78M$65M$330M—
Net Cash————

Key Ratios (Trailing)

Valuation
  • P/E TTM—
  • EV/EBITDA TTM—
  • EV/Revenue TTM—
  • Price/FCF TTM—
Profitability
  • Gross Margin (TTM)79.5%
  • EBITDA Margin (TTM)22.5%
  • Net Margin (TTM)14.9%
  • ROIC58.4%
  • FCF Conversion76.2%
  • SBC / Revenue6.3%
Reference

The Company

A10 Networks provides secure application and network infrastructure: legacy carrier-grade networking, next-generation application delivery and traffic management, and A10 Defend network security for DDoS mitigation and WAAP. Its products sit in front of applications and are purchased when traffic volume, security threats, and latency demands rise, conditions management ties directly to AI workloads. The June 2026 TrojAI acquisition added build-time AI red teaming and run-time protection for AI applications and agentic workflows.

The company operates as one reportable segment, with the CEO assessing performance on consolidated net income. Revenue comes from product sales plus maintenance and support services, and product revenue is the stated lead indicator. A10 is capital-light: a San Jose headquarters and Americas warehouse of 116,381 square feet with a lease expiring July 31, 2027, a Taiwan distribution center for APJ and EMEA, and outsourced third-party logistics in Japan. Manufacturing is outsourced to Lanner, AEWIN, and iBase; Lanner and AEWIN are in Taiwan.

Business Segments

Next-Generation Networking
The AI build-out layer
Server load balancing, global load distribution, SSL/TLS acceleration and offload, traffic steering, observability, policy controls.
Growth driver: AI build-outs and traffic management returning to forefront.
Network Security (A10 Defend)
Security-led revenue remains the dominant product driver
DDoS detection and mitigation, orchestration, threat intelligence, converged data-path security, cloud-delivered WAAP.
Growth driver: AI expands attack surface and traffic scale.
Legacy Networking
Stable telco demand, not growing
Carrier-grade NAT, IPv4 preservation, IPv6 migration, high-scale session management, policy controls.
Growth driver: Traditional telco stability, not secular growth.

Competitive Landscape

A10's 10-K names competitors across application delivery, network security, and network equipment, including F5, NetScaler, VMware within Broadcom, Arbor Networks, Radware, Cisco, HPE (Juniper), Fortinet, Akamai, Cloudflare, Imperva, and AWS. On the Q2 call, management described two classes of competitors: traditional infrastructure companies adding AI capabilities and many small, heavily funded startups.

  • F5
    Named in 10-K as application delivery / traffic management competitor; not discussed.
  • Fortinet
    Named in 10-K as network equipment / security competitor; not discussed.
  • Cisco
    Named in 10-K as network equipment / security competitor; not discussed.
  • Cloudflare
    Named in 10-K as cloud WAAP / security competitor; not discussed.
  • Akamai
    Named in 10-K as cloud WAAP / security competitor; not discussed.
Competitor names are from A10's FY2025 10-K; the source set does not include separate company commentary on each.

Supply Chain

A10 sits between outsourced hardware manufacturers and enterprise/service-provider networks, designing and selling application delivery and security gear while manufacturing is handled by third parties. No neighbor read-through in the source set mentioned A10 by name.

Supplier
Lanner Electronics Inc.
Manufactures and assembles hardware
Supplier
AEWIN Technologies Co., Ltd.
Manufactures and assembles hardware
Supplier
iBase
Manufactures and assembles hardware
Sole Source
Unnamed IC suppliers
Key integrated circuits; some sole-source providers
Supplier
Unnamed 3–4 major memory suppliers
DDR memory; lead time, cost, and allocation constraints
→
Traffic management for AI build-outs
ATEN
Designs and sells secure application delivery and network security; outsourced manufacturing and capital-light distribution.
→
Customer A (Microsoft inferred, not explicitly named)
37% of Q1 revenue
AI infrastructure build-out; Q2 expected similar while rollout completes.
Enterprise customers
56% of Q1 revenue / 60% of Q2
Includes new Microsoft business categorized as enterprise.
Service provider customers
44% of Q1 revenue
Ex-Microsoft expected slightly better than 2025.

Analysis updated Aug 12, 2026, reviewing Q1 FY2026. Prices delayed. Built with The Buildout’s published methodology. Not investment advice. No positions held. © The Buildout 2026.

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