Summary
Latest filing:
Alex Keun Mo Yang is Chief Executive Officer, Director, 10% Owner of Polaryx Therapeutics, Inc. (PLYX). 1 SEC Form 4 filing on record, dated 29 May 2026. Most recent open-market trade: bought $360K of PLYX on 29 May 2026. Lifetime open-market purchases: $360K.
Recent Transactions
1Every recent SEC Form 4 transaction Alex Keun Mo Yang 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 Alex Keun Mo Yang 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.
- G. Michael Landis - $8K of PLYX 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 Alex Keun Mo Yang?
Alex Keun Mo Yang is a corporate insider, tracked as Chief Executive Officer, Director, 10% Owner of Polaryx Therapeutics, Inc. (PLYX). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Alex Keun Mo Yang last file a Form 4?
The only primary Form 4 on record is dated 29 May 2026.
Has Alex Keun Mo Yang been buying or selling stock?
Recorded transactions: 1 open-market purchase ($360K) and 0 open-market sales across all tracked filings.
Where can I see all of Alex Keun Mo Yang'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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