Arista Networks, Inc. announced fourth quarter and full-year financial results for the year ended December 31, 2025.

Arista Networks, Inc. (NYSE: ANET), an industry leader in data-driven, client-to-cloud networking for large AI, data center, campus, and routing environments, today announced financial results for its fourth quarter and the full year ended December 31, 2025.

"2025 was the year of validation of our Arista 2.0 momentum, as we hit the milestone of shipping a cumulative of 150 million ports," stated Jayshree Ullal, Chairperson and CEO of Arista Networks. "We exceeded both our AI networking and campus expansion goals, delivering profitable growth and revenue of $9 billion."

Fourth Quarter Financial Highlights

Revenue of $2.488 billion, an increase of 7.8% compared to the third quarter of 2025, and an increase of 28.9% from the fourth quarter of 2024.

GAAP gross margin of 62.9%, compared to GAAP gross margin of 64.6% in the third quarter of 2025 and 63.8% in the fourth quarter of 2024.

Non-GAAP gross margin of 63.4%, compared to non-GAAP gross margin of 65.2% in the third quarter of 2025 and 64.2% in the fourth quarter of 2024.

GAAP net income of $955.8 million, or $0.75 per diluted share, compared to GAAP net income of $801.0 million, or $0.62 per diluted share, in the fourth quarter of 2024.

Non-GAAP net income of $1.047 billion, or $0.82 per diluted share, compared to non-GAAP net income of $849.6 million1, or $0.661 per diluted share, in the fourth quarter of 2024.

Full Year Financial Highlights

Revenue of $9.006 billion, an increase of 28.6% compared to fiscal year 2024.

GAAP gross margin of 64.1%, compared to GAAP gross margin of 64.1% in fiscal year 2024.

Non-GAAP gross margin of 64.6%, compared to non-GAAP gross margin of 64.6% in fiscal year 2024.

GAAP net income of $3.511 billion, or $2.75 per diluted share, compared to GAAP net income of $2.852 billion, or $2.23 per diluted share, in fiscal year 2024.

Non-GAAP net income of $3.806 billion or $2.98 per diluted share, compared to non-GAAP net income of $2.971 billion1 or $2.321 per diluted share, in fiscal year 2024.

"Our Q4 results underscore the strong operating leverage inherent in our model, providing a powerful exit rate as we head into 2026," said Chantelle Breithaupt, Arista's CFO. "By pairing 29% revenue growth with a disciplined 47.5% operating margin, Arista achieved a historic milestone: surpassing $1 billion in quarterly net income. Congratulations to the team."

Fourth Quarter Company Highlights

Arista Networks Unveiled Next Generation Data and AI Center Networks

The R4 series platforms for AI, data center, and routed backbone deployment deliver high performance, low AI job completion times, low power consumption, and integrated security, while helping customers reduce total cost of ownership.

Arista Introduced Innovations for Massive Scale Campus Mobility

Arista Virtual Ethernet Segment with Proxy ARP (Arista VESPA) enables customers to deploy large-scale WLAN mobility domains.

Arista AVA uses Agentic AI to Streamline Network Operations

Arista AVA (Autonomous Virtual Assist) was extended with additional agentic AI capabilities for use cases such as multi-domain event correlation, continuous monitoring, and network troubleshooting.

Arista Launched Cognitive Campus Switches for the Industrial Edge

Arista's new ruggedized platforms bring the power, reliability, and operational simplicity of EOS to demanding industrial or outdoor environments.

Full Year Company Highlights

Arista introduced intelligent innovations for AI networking

Capabilities such as Cluster Load Balancing (CLB) and CloudVision® Universal Network Observability™ (CV UNO™) maximize AI workload performance and deliver deep job-centric observability for enhanced troubleshooting.

Arista Networks to collaborate with industry leaders to deliver Ethernet for Scale-Up Networks (ESUN)

ESUN was unveiled at the OCP Global Summit in October 2025 as an open OCP workstream committed to the goal of open standards-based solutions for scale-up, based on Ethernet, and open to all.

Arista Networks announced AI agents to streamline network operations

With the combined power of open standards like MCP and the robust data and programmability of Arista's EOS and NetDL, organizations are empowered to build, manage, and secure the networks of the future.

Arista Networks Acquired the VeloCloud® SD-WAN Portfolio from Broadcom

VeloCloud enables customers to securely and efficiently interconnect data centers and distributed campus/branch offices while complementing Arista's existing portfolio.

Arista Networks Recognized in the Leaders Quadrant of the 2025 Gartner® Magic Quadrant™ for Data Center Switching, published on March 31, 2025, and in the Visionaries Quadrant of the 2025 Gartner® Magic Quadrant™ for Enterprise Wired and Wireless LAN Infrastructure published on 25 June 2025

Gartner positioned Arista Networks as the vendor with the highest Ability to Execute in the Magic Quadrant™ for Data Center Switching.

Arista Networks Expanded its Executive Ranks

Todd Nightingale was appointed President and Chief Operating Officer, Kenneth Duda was promoted to President and Chief Technology Officer, and Tyson Lamoreaux was appointed Senior Vice President of Cloud and AI Networking.

Financial Outlook

For the first quarter of 2026, we expect:

Revenue of approximately $2.6 billion;

Non-GAAP gross margin between approximately 62-63%; and

Non-GAAP operating margin of approximately 46%.

Guidance for non-GAAP financial measures excludes certain items, including stock-based compensation expense, intangible asset amortization, and potential non-recurring charges or benefits. A reconciliation of non-GAAP guidance measures to corresponding GAAP measures is not available on a forward-looking basis without unreasonable effort because these exclusions can be uncertain or difficult to predict, including stock-based compensation expense which is impacted by the timing of employee stock transactions, the company's future hiring and retention needs and the future fair market value of the company's common stock. The actual amount of these exclusions will have a significant impact on the company's GAAP gross margin and GAAP operating margin.

Prepared Materials and Conference Call Information

Arista's executives will discuss the fourth quarter and year end 2025 financial results on a conference call at 1:30 p.m. Pacific time today. 

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