Summary
Updated Aug 30, 2026
Diane L. Cooper is Director of StoneX Group Inc. (SNEX). 6 SEC Form 4 filings on record going back to 2025, most recently on 5 August 2026.
Recent Transactions
6Every recent SEC Form 4 transaction Diane L. Cooper has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Diane L. Cooper go back to 2025: 6 primary Form 4 filings, an average of 3.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Diane L. Cooper 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.
- Sean Michael Oconnor - $70.94M of SNEX open-market activity in the last 12 months
- William J. Dunaway - $28.95M of SNEX open-market activity in the last 12 months
- Mark Lowry Maurer - $23.95M of SNEX open-market activity in the last 12 months
- Philip Andrew Smith - $13.19M of SNEX open-market activity in the last 12 months
- Diego Rotsztain - $11.32M of SNEX open-market activity in the last 12 months
- Charles M. Lyon - $4.93M of SNEX 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 Diane L. Cooper?
Diane L. Cooper is a corporate insider, tracked as Director of StoneX Group Inc. (SNEX). 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 Diane L. Cooper submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Diane L. Cooper'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.
Learn More
Follow Diane L. Cooper and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial