Summary
Updated Aug 31, 2026
Magnin Shelly A. Dumas is VP and Corporate Controller of Schneider National, Inc. (SNDR). 2 SEC Form 4 filings on record, most recently on 8 May 2026. Most recent open-market trade: sold $75K of SNDR on 8 May 2026. Lifetime open-market sales: $75K.
Recent Transactions
6Every recent SEC Form 4 transaction Magnin Shelly A. Dumas has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Magnin Shelly A. Dumas go back to 2026: 2 primary Form 4 filings, an average of 2.0 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 Magnin Shelly A. Dumas 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.
- Mark B. Rourke - $2.61M of SNDR open-market activity in the last 12 months
- Thomas G. Jackson - $753K of SNDR open-market activity in the last 12 months
- Angela M. Fish - $427K of SNDR open-market activity in the last 12 months
- Shaleen Devgun - $322K of SNDR open-market activity in the last 12 months
- Darrell George Campbell - $173K of SNDR 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 Magnin Shelly A. Dumas?
Magnin Shelly A. Dumas is a corporate insider, tracked as VP and Corporate Controller of Schneider National, Inc. (SNDR). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Magnin Shelly A. Dumas last file a Form 4?
The most recent primary Form 4 on record is dated 8 May 2026, one of 2 filings going back to 2026.
Has Magnin Shelly A. Dumas been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($75K) across all tracked filings.
Where can I see all of Magnin Shelly A. Dumas'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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