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.
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.
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
4
The latest 4 SEC Form 4 transactions reported by Matthew C. Winger.
InsiderAlpha's records for Matthew C. Winger go back to 2024: 3 primary Form 4 filings, an average of 1.0 per year. The typical open-market purchase is $4K (2 buys totaling $9K). The largest single buy on record is $9K of NNUP in 2026. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
