Summary
Updated Aug 30, 2026
Matthew C. Winger is Chief Executive Officer, Director of NOCOPI TECHNOLOGIES INC/MD/ (NNUP). 3 SEC Form 4 filings on record going back to 2024, most recently on 20 August 2026. Most recent open-market trade: bought $360 of NNUP on 20 August 2026. Lifetime open-market purchases: $9K.
Recent Transactions
4Every recent SEC Form 4 transaction Matthew C. Winger 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 Matthew C. Winger 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.
- Kevin Camerer Westenburg - $50K of NNUP 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 Matthew C. Winger?
Matthew C. Winger is a corporate insider, tracked as Chief Executive Officer, Director of NOCOPI TECHNOLOGIES INC/MD/ (NNUP). InsiderAlpha holds 3 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 Matthew C. Winger submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Matthew C. Winger been buying or selling stock?
Recorded transactions: 2 open-market purchases ($9K) and 0 open-market sales across all tracked filings.
Where can I see all of Matthew C. Winger'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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