Summary
Updated Aug 30, 2026
Ling Zang files SEC Form 4 reports at GENTEX CORP (GNTX). 1 SEC Form 4 filing on record, dated 22 May 2026.
Recent Transactions
1Every recent SEC Form 4 transaction Ling Zang 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 Ling Zang 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.
- Steven R. Downing - $866K of GNTX open-market activity in the last 12 months
- Matthew Chiodo - $496K of GNTX open-market activity in the last 12 months
- Kevin C. Nash - $297K of GNTX open-market activity in the last 12 months
- Neil Boehm - $279K of GNTX open-market activity in the last 12 months
- Leslie L. Brown - $246K of GNTX open-market activity in the last 12 months
- Scott P. Ryan - $223K of GNTX 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 Ling Zang?
Ling Zang is a corporate insider of GENTEX CORP (GNTX). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Ling Zang last file a Form 4?
The only primary Form 4 on record is dated 22 May 2026.
Where can I see all of Ling Zang'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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