Summary
Updated Aug 30, 2026
John Brust is Director of GREENE COUNTY BANCORP INC (GCBC). 1 SEC Form 4 filing on record, dated 28 April 2026. Most recent open-market trade: bought $50K of GCBC on 28 April 2026. Lifetime open-market purchases: $100K. Historical track record: 4/5 stars across 3 tracked purchases.
Recent Transactions
3Every recent SEC Form 4 transaction John Brust 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 John Brust 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.
- Michelle M. Plummer - $288K of GCBC open-market activity in the last 12 months
- Tejraj S. Hada - $268K of GCBC open-market activity in the last 12 months
- Jay P. Cahalan - $98K of GCBC open-market activity in the last 12 months
- Peter W. Hogan - $66K of GCBC open-market activity in the last 12 months
- Christopher Cannucciari - $54K of GCBC open-market activity in the last 12 months
- John Antalek - $33K of GCBC 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 John Brust?
John Brust is a corporate insider, tracked as Director of GREENE COUNTY BANCORP INC (GCBC). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did John Brust last file a Form 4?
The only primary Form 4 on record is dated 28 April 2026.
Has John Brust been buying or selling stock?
Recorded transactions: 3 open-market purchases ($100K) and 0 open-market sales across all tracked filings.
How accurate is John Brust's historical track record?
Across 3 tracked purchases, John Brust averaged +4.6% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
Where can I see all of John Brust'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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