DORCHESTER MINERALS OPERATING LP is an investment firm that reports beneficial ownership of shares in DORCHESTER MINERALS, L.P. (DMLP) under U.S. securities law. It has submitted 9 SEC insider filings since 2024, most recently in June 2026.
Every role DORCHESTER MINERALS OPERATING LP 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)9 filingsLatest filing:
DORCHESTER MINERALS OPERATING LP files SEC Form 4 reports at DORCHESTER MINERALS, L.P. (DMLP). 9 SEC Form 4 filings on record going back to 2024, most recently on 2 June 2026. Most recent open-market trade: bought $110K of DMLP on 2 June 2026. Lifetime open-market purchases: $2.31M. Historical track record: 3/5 stars across 27 tracked purchases.
Every recent SEC Form 4 transaction DORCHESTER MINERALS OPERATING LP 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 | 27 |
| Purchases with forward-return data | 27 |
| 30-day win rate | 63% |
| 90-day win rate | 30% |
| Avg 5-day return | +0.65% |
| Avg 30-day return | -0.08% |
| Avg 90-day return | -4.22% |
| Best 30-day return |
InsiderAlpha's records for DORCHESTER MINERALS OPERATING LP go back to 2024: 9 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $86K (27 buys totaling $2.31M). The largest single buy on record is $288K of DMLP in 2025. 26 recorded transactions carry a Rule 10b5-1 plan flag. This identifies the marked transactions as reported under a trading plan; it does not establish the plan status of unmarked transactions.
Insiders who reported open-market trades in the last 12 months at the companies DORCHESTER MINERALS OPERATING LP 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:
DORCHESTER MINERALS OPERATING LP is an investment firm of DORCHESTER MINERALS, L.P. (DMLP). InsiderAlpha holds 9 primary Form 4 filings for it, the earliest from 2024, updated as new SEC EDGAR filings are processed.
The most recent primary Form 4 on record is dated 2 June 2026, one of 9 filings going back to 2024.
Recorded transactions: 27 open-market purchases ($2.31M) and 0 open-market sales across all tracked filings.
Across 27 tracked purchases, DORCHESTER MINERALS OPERATING LP averaged -0.1% avg 30-day return with a 63% 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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