Summary
Updated Aug 30, 2026
Jon Marshall Mahan is Director of DONEGAL GROUP INC (DGICA). 3 SEC Form 4 filings on record going back to 2024, most recently on 5 November 2025. Most recent open-market trade: sold $86K of DGICA on 5 November 2025. Lifetime open-market sales: $288K.
Recent Transactions
5Every recent SEC Form 4 transaction Jon Marshall Mahan 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 Jon Marshall Mahan 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.
- DONEGAL MUTUAL INSURANCE CO - $13.14M of DGICA open-market activity in the last 12 months
- Noland Rone Deas Jr. - $467K of DGICA open-market activity in the last 12 months
- Daniel J. Wagner - $356K of DGICA open-market activity in the last 12 months
- Christina Marie Hoffman - $354K of DGICA open-market activity in the last 12 months
- Kristi Spencer Altshuler - $243K of DGICA open-market activity in the last 12 months
- Dennis Joseph Bixenman - $217K of DGICA 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 Jon Marshall Mahan?
Jon Marshall Mahan is a corporate insider, tracked as Director of DONEGAL GROUP INC (DGICA). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Jon Marshall Mahan last file a Form 4?
The most recent primary Form 4 on record is dated 5 November 2025, one of 3 filings going back to 2024.
Has Jon Marshall Mahan been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($288K) across all tracked filings.
Where can I see all of Jon Marshall Mahan'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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