Summary
Updated Aug 31, 2026
Marc Duey is Director of Aprea Therapeutics, Inc. (APRE). 4 SEC Form 4 filings on record going back to 2024, most recently on 17 June 2026. Most recent open-market trade: sold $30K of APRE on 25 October 2024. Lifetime open-market purchases: $132K. Lifetime open-market sales: $30K.
Recent Transactions
4Every recent SEC Form 4 transaction Marc Duey has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Marc Duey go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. The typical open-market purchase is $66K (2 buys totaling $132K). The largest single buy on record is $132K of APRE in 2024. Sales side: 1 recorded sale totaling $30K, so the filing history runs buy-heavy by dollar value. 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 Marc Duey 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.
- Richard Peters - $100K of APRE open-market activity in the last 12 months
- John P. Hamill - $30K of APRE open-market activity in the last 12 months
- Oren Gilad - $25K of APRE 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 Marc Duey?
Marc Duey is a corporate insider, tracked as Director of Aprea Therapeutics, Inc. (APRE). InsiderAlpha holds 4 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 Marc Duey submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Marc Duey been buying or selling stock?
Recorded transactions: 2 open-market purchases ($132K) and 1 open-market sale ($30K) across all tracked filings.
Where can I see all of Marc Duey'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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