F5

At a glance

F5 reported 2025 revenue of $3.09B, up 9.7% from $2.82B in 2024. Over 4 years since 2021 ($2.6B), that is growth of about 4.4% a year. Operating margin was 24.8%, up from 15.1% in 2021. 2025 was the highest revenue year in this period.

In the last 12 months 13 insiders reported 0 open-market purchases and 50 sales ($29.1M). 44 of the sales were made under pre-arranged 10b5-1 plans. The largest was a sale of $2.4M by EVP, Worldwide Sales Chad Michael Whalen on Nov 4, 2025.

F5 filed 7 current reports (Form 8-K) in the last 12 months, most often for results of operations (4), officer or director change (3) and shareholder vote results (1). The latest officer or director change was reported on Jun 23, 2026.

3 of the 20 investors tracked here held F5 at the last quarter end, worth $18.5M combined. It is the largest weight for Duquesne Family Office (0.2% of its portfolio), followed by Renaissance Technologies (0%). New this quarter: Duquesne Family Office and Renaissance Technologies. Added: National Pension Service (Korea).

Annual results

Fiscal year ends Sep 30 · incorporated in WA

Tracked investors holding (13F)

Weight is the share of each investor's portfolio, as of the quarter end.