Leslie A. Moriyama holds the role of Chief Financial Officer at DORCHESTER MINERALS, L.P. (DMLP). Moriyama has reported 7 insider filings with the SEC since 2024. The most recent filing was in August 2026.
Every role Leslie A. Moriyama has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
DORCHESTER MINERALS, L.P. (DMLP)1 filingLatest filing:
Leslie A. Moriyama is Chief Financial Officer of DORCHESTER MINERALS, L.P. (DMLP). 7 SEC Form 4 filings on record going back to 2024, most recently on 19 August 2026. Most recent open-market trade: bought $147K of DMLP on 19 August 2026. Lifetime open-market purchases: $732K. Historical track record: 3/5 stars across 3 tracked purchases.
Every recent SEC Form 4 transaction Leslie A. Moriyama has reported, most recent first.
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 | ★★★☆☆ (3/5) |
| Total purchases tracked | 3 |
| Purchases with forward-return data | 3 |
| 30-day win rate | 67% |
| 90-day win rate | 33% |
| Avg 5-day return | -0.80% |
| Avg 30-day return | +0.57% |
| Avg 90-day return | -0.56% |
| Best 30-day return |
InsiderAlpha's records for Leslie A. Moriyama go back to 2024: 7 primary Form 4 filings, an average of 2.3 per year. The typical open-market purchase is $183K (4 buys totaling $732K). The largest single buy on record is $415K of DMLP in 2024. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
Insiders who reported open-market trades in the last 12 months at the companies Leslie A. Moriyama 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.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Leslie A. Moriyama is a corporate insider, tracked as Chief Financial Officer of DORCHESTER MINERALS, L.P. (DMLP). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
1 primary Form 4 filing in the last 90 days, covering 1 company.
Recorded transactions: 4 open-market purchases ($732K) and 0 open-market sales across all tracked filings.
Across 3 tracked purchases, Leslie A. Moriyama averaged +0.6% avg 30-day return with a 67% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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$DMLP DORCHESTER MINERALS, L.P.4.0K shares @ $0.00-
| +1.00% |