Summary
Updated Aug 30, 2026
Judith Sim is Director of Fortinet, Inc. (FTNT). 10 SEC Form 4 filings on record going back to 2024, most recently on 13 August 2026.
Recent Transactions
8Every recent SEC Form 4 transaction Judith Sim has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Judith Sim 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.
- SLTA V (GP), L.L.C. - $275.19M of FA open-market activity in the last 12 months
- Ken Xie - $78.15M of FTNT open-market activity in the last 12 months
- Michael Xie - $29.54M of FTNT open-market activity in the last 12 months
- John Whittle - $18.75M of FTNT open-market activity in the last 12 months
- Joelle M. Smith - $505K of FA open-market activity in the last 12 months
- Bret T. Jardine - $462K of FA open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Judith Sim?
Judith Sim is a corporate insider, tracked as Director of Fortinet, Inc. (FTNT). InsiderAlpha holds 10 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Judith Sim submitted recently?
3 primary Form 4 filings in the last 90 days, covering 2 companies.
Where can I see all of Judith Sim's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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