John Anthony Maddison
Chief Product Mkting Officer · F5, INC.
- 2025
- Sep 15, 2026
- 6
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies John Anthony Maddison files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Francois Locoh-Donou - $5.21M in FFIV purchases and sales in the last 12 months
- Thomas Dean Fountain - $3.54M in FFIV purchases and sales in the last 12 months
- Chad Michael Whalen - $2.88M in FFIV purchases and sales in the last 12 months
- Edward Cooper Werner - $2.53M in FFIV purchases and sales in the last 12 months
- Michael F. Montoya - $1.82M in FFIV purchases and sales in the last 12 months
- Nikhil Ramesh Mehta - $1.56M in FFIV purchases and sales in the last 12 months
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Frequently asked questions
Who is John Anthony Maddison?
John Anthony Maddison is a corporate insider, tracked as Chief Product Mkting Officer of F5, INC. (FFIV). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has John Anthony Maddison submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has John Anthony Maddison been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($1.09M) across all tracked filings.
