Summary
Updated Aug 30, 2026
Gust Kepler is 10% Owner of BLACKBOXSTOCKS INC. (ALOY). 4 SEC Form 4 filings on record going back to 2025, most recently on 20 April 2026. Most recent open-market trade: sold $799K of ALOY on 19 March 2026. Lifetime open-market sales: $2.18M.
Recent Transactions
5Every recent SEC Form 4 transaction Gust Kepler 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 Gust Kepler 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.
- Robert L. Winspear - $513K of ALOY open-market activity in the last 12 months
- Charles Brandon Smith - $366K of ALOY open-market activity in the last 12 months
- Charles Keller Reid - $46K of ALOY 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 Gust Kepler?
Gust Kepler is a corporate insider, tracked as 10% Owner of BLACKBOXSTOCKS INC. (ALOY). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Gust Kepler last file a Form 4?
The most recent primary Form 4 on record is dated 20 April 2026, one of 4 filings going back to 2025.
Has Gust Kepler been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($2.18M) across all tracked filings.
Where can I see all of Gust Kepler'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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