In 2013, former Seattle Mayor Mike McGinn, proclaimed that February 5 was “F5 Day” for the city. We’ve been celebrating it ever since – taking it to our more than 70 offices across the globe.
Like many tech companies in Seattle, F5 had fairly humble beginnings. Founded in 1996, under the banner of F5 Labs, we rode the dot-com boom selling some of the world’s first load balancers, until the bubble burst - and we almost did too.

Under the leadership of CEO John McAdam, F5 emerged from the early-2000s with the Traffic Management Operating System (TMOS) and a razor-sharp focus on applications services for enterprise customers.
The result has been F5’s lead position for almost a decade in Application Delivery Controllers (ADC), and our expansion into a number of new markets, including cloud computing and security. Today, F5 employs more than 4,275 people worldwide, with more than 1,500 employees based in Washington State. In fiscal year 2015, we recorded revenue of $1.92 billion.
This year, we’re marking the occasion in our offices in the Americas, Europe, Middle East, Africa, Asia and Australia by recognizing our employees for all they accomplish for F5 and in their communities. Just take a look at their #Iamf5 posts on social media, the significant support they offer to local charities, the +200,000 members they engage on DevCentral, or the customers in 48 of Fortune 50 companies that swear by their service. For two years running, F5 has been named a “Best Place to Work” in the U.S. by the Glassdoor Employees’ Choice Awards and we are routinely recognized as leaders in both our industry and region.
We want to thank the city of Seattle for the recognition of “F5 Day,” but more importantly for the opportunity it gives us to thank the many colleagues, partners, friends and families who have contributed to our success along the way. 2016 may mark 20 years in business, but in some ways, I think many at F5 feel as if we’ve only just begun!
About the Author
Related Blog Posts

Accelerate Kubernetes and AI workloads with F5 BIG-IP and AWS EKS
The F5 BIG-IP Next for Kubernetes software will soon be available in AWS Marketplace to accelerate managed Kubernetes performance on AWS EKS.

The everywhere attack surface: EDR in the network is no longer optional
All endpoints can become an attacker’s entry point. That’s why your network needs true endpoint detection and response (EDR), delivered by F5 and CrowdStrike.
F5 NGINX Gateway Fabric is a certified solution for Red Hat OpenShift
F5 collaborates with Red Hat to deliver a solution that combines the high-performance app delivery of F5 NGINX with Red Hat OpenShift’s enterprise Kubernetes capabilities.

F5 accelerates and secures AI inference at scale with NVIDIA Cloud Partner reference architecture
F5’s inclusion within the NVIDIA Cloud Partner (NCP) reference architecture enables secure, high-performance AI infrastructure that scales efficiently to support advanced AI workloads.
F5 Silverline Mitigates Record-Breaking DDoS Attacks
Malicious attacks are increasing in scale and complexity, threatening to overwhelm and breach the internal resources of businesses globally. Often, these attacks combine high-volume traffic with stealthy, low-and-slow, application-targeted attack techniques, powered by either automated botnets or human-driven tools.
Phishing Attacks Soar 220% During COVID-19 Peak as Cybercriminal Opportunism Intensifies
David Warburton, author of the F5 Labs 2020 Phishing and Fraud Report, describes how fraudsters are adapting to the pandemic and maps out the trends ahead in this video, with summary comments.