Summary
Updated Aug 31, 2026
Koy W. Diepholz files SEC Form 4 reports at DYNARESOURCE, INC. (DYNR). 3 SEC Form 4 filings on record, most recently on 15 August 2025. Most recent open-market trade: bought $75K of DYNR on 15 August 2025. Lifetime open-market purchases: $76K. Historical track record: 5/5 stars across 6 tracked purchases.
Recent Transactions
10Every recent SEC Form 4 transaction Koy W. Diepholz has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★★ (5/5) |
| Total purchases tracked | 6 |
| Purchases with forward-return data | 6 |
| 30-day win rate | 100% |
| 90-day win rate | 100% |
| Avg 5-day return | +2.94% |
| Avg 30-day return | +12.05% |
| Avg 90-day return | +25.76% |
| Best 30-day return | +45.33% |
Trading Pattern
InsiderAlpha's records for Koy W. Diepholz go back to 2025: 3 primary Form 4 filings, an average of 1.5 per year. The typical open-market purchase is $13K (6 buys totaling $76K). The largest single buy on record is $75K of DYNR in 2025. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who have reported open-market trades at the same companies as Koy W. Diepholz. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Gareth Nichol - $2.89M of DYNR open-market activity on record
- Matthew K. Rose - $1.75M of DYNR 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 Koy W. Diepholz?
Koy W. Diepholz is a corporate insider of DYNARESOURCE, INC. (DYNR). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Koy W. Diepholz last file a Form 4?
The most recent primary Form 4 on record is dated 15 August 2025, one of 3 filings going back to 2025.
Has Koy W. Diepholz been buying or selling stock?
Recorded transactions: 6 open-market purchases ($76K) and 0 open-market sales across all tracked filings.
How accurate is Koy W. Diepholz's historical track record?
Across 6 tracked purchases, Koy W. Diepholz averaged +12.0% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
Where can I see all of Koy W. Diepholz'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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