Mark Lowry Maurer - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Mark Lowry Maurer has filed 4 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $20.97M.
Profile
Mark Lowry Maurer is a corporate insider at StoneX Group Inc. (SNEX). Maurer has reported 6 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- StoneX Group Inc.
Trading Pattern
InsiderAlpha's records for Mark Lowry Maurer go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. 7 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role Mark Lowry Maurer has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Insider at StoneX Group Inc. (SNEX) - 6 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-24 | SNEX | StoneX Group Inc. | S - Open-market sale [10b5-1] | 52.4K | $74.32 | $3.89M |
| 2026-07-24 | SNEX | StoneX Group Inc. | M - Option exercise [10b5-1] | 69.4K | $8.90 | $617K |
| 2026-06-17 | SNEX | StoneX Group Inc. | S - Open-market sale [10b5-1] | 11.5K | $133.63 | $1.54M |
| 2026-06-17 | SNEX | StoneX Group Inc. | S - Open-market sale [10b5-1] | 34.7K | $135.31 | $4.70M |
| 2026-06-17 | SNEX | StoneX Group Inc. | M - Option exercise [10b5-1] | 46.2K | $13.34 | $617K |
| 2026-05-26 | SNEX | StoneX Group Inc. | S - Open-market sale | 11.4K | $112.25 | $1.28M |
| 2026-05-15 | SNEX | StoneX Group Inc. | S - Open-market sale | 34.9K | $116.29 | $4.05M |
| 2026-05-15 | SNEX | StoneX Group Inc. | M - Option exercise | 46.3K | $13.34 | $617K |
| 2026-02-11 | SNEX | StoneX Group Inc. | S - Open-market sale | 40.0K | $124.88 | $5.00M |
| 2026-02-11 | SNEX | StoneX Group Inc. | M - Option exercise | 40.0K | $20.00 | $800K |
| 2024-12-16 | SNEX | StoneX Group Inc. | A - Grant or award | 6.9K | $0.00 | |
| 2024-12-16 | SNEX | StoneX Group Inc. | S - Open-market sale | 5.0K | $101.60 | $508K |
Companies - Last 90 Days
- StoneX Group Inc. (SNEX) - 4 filings, last 2026-07-24
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Mark Lowry Maurer has recently filed 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 - $71.42M of SNEX open-market activity in the last 12 months
- William J. Dunaway - $22.55M 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
- Abigail H. Perkins - $2.15M 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:
- Frank Martell
- Martin Product Sales LLC
- Marcelo Eduardo Martins
- Neil Mehta
- Keith A. Meister
- MetLife Investment Management, LLC
- John Micek
- Andrew J. Mills
Frequently Asked Questions
Who is Mark Lowry Maurer?
Mark Lowry Maurer is a corporate insider at StoneX Group Inc. (SNEX). Maurer has reported 6 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Mark Lowry Maurer submitted recently?
4 primary Form 4 filings in the last 90 days, covering 1 company.
Has Mark Lowry Maurer been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($20.97M) across all tracked filings.
Where can I see all of Mark Lowry Maurer'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
Open the live Mark Lowry Maurer profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.