Summary
Updated Aug 30, 2026
Dennis Langer is Director of Quoin Pharmaceuticals, Ltd. (QNRX). 6 SEC Form 4 filings on record going back to 2024, most recently on 28 August 2026. Most recent open-market trade: bought $129K of QNRX on 15 October 2025. Lifetime open-market purchases: $129K.
Recent Transactions
2Every recent SEC Form 4 transaction Dennis Langer has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who have reported open-market trades at the same companies as Dennis Langer. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Michael Myers - $250K of QNRX open-market activity on record
- Denise P. Carter - $250K of QNRX open-market activity on record
- Gordon Dunn - $55K of QNRX open-market activity on record
- Anthony James Culverwell - $45K of QNRX open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Dennis Langer?
Dennis Langer is a corporate insider, tracked as Director of Quoin Pharmaceuticals, Ltd. (QNRX). InsiderAlpha holds 6 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 Dennis Langer submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Dennis Langer been buying or selling stock?
Recorded transactions: 5 open-market purchases ($129K) and 0 open-market sales across all tracked filings.
Where can I see all of Dennis Langer'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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