Transactions
13
Insider / DORCHESTER MINERALS, L.P.
DORCHESTER MINERALS OPERATING LP
Insider at DORCHESTER MINERALS, L.P.
- Company
- DORCHESTER MINERALS, L.P.
- Ticker
- DMLP
- First filing on record
- December 2, 2025
- Latest trade on record
- June 1, 2026
- SEC filings
- EDGAR ↗
DORCHESTER MINERALS OPERATING LP, Insider at DORCHESTER MINERALS, L.P., has disclosed 13 transactions in DMLP since December 2, 2025: 12 purchases (12 open-market buys) and 0 sales, worth about $3.0M at the reported prices. The latest was filed June 2, 2026, 1 day after the trade.
Open-market buys
12
Sales
0
Avg. disclosure lag
1.7d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months DORCHESTER MINERALS OPERATING LP made 12 purchases worth $1.7M and no sales, plus 1 other transaction. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
DORCHESTER MINERALS OPERATING LP has traded 1 stock on record; the largest by dollars is DMLP.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 6 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| P | Open-market purchase | 12 | 70,000 | $1.7M |
| J | Other acquisition or disposal | 1 | 58,000 | $1.3M |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 8 | 8 · $924K | 0 |
| 2025 | 5 | 4 · $779K | 0 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| DMLP | Buy P | June 1, 2026 | June 2, 2026 | 1d | 4,001 | $28 | $110K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | June 1, 2026 | June 2, 2026 | 1d | 999 | $28 | $28K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | June 1, 2026 | June 2, 2026 | 1d | 2,500 | $28 | $69K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | May 20, 2026 | May 22, 2026 | 2d | 6,000 | $28 | $170K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | May 20, 2026 | May 22, 2026 | 2d | 1,500 | $28 | $42K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | February 13, 2026 | February 13, 2026 | 0d | 5,000 | $25 | $126K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | February 12, 2026 | February 13, 2026 | 1d | 5,000 | $25 | $125K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | February 11, 2026 | February 13, 2026 | 2d | 10,000 | $25 | $253K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | December 22, 2025 | December 23, 2025 | 1d | 10,000 | $22 | $223K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | December 19, 2025 | December 23, 2025 | 4d | 5,000 | $22 | $111K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | December 18, 2025 | December 19, 2025 | 1d | 15,729 | $22 | $350K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Buy P | December 17, 2025 | December 19, 2025 | 2d | 4,271 | $22 | $95K | 10b5-1 plan | Form 4 ↗ | |
| DMLP | Other J | November 28, 2025 | December 2, 2025 | 4d | 58,000 | $22 | $1.3M | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| June 2, 2026 | Form 4 | 0001437749-26-019186 | 3 | published | EDGAR ↗ |
| May 22, 2026 | Form 4 | 0001437749-26-018250 | 2 | published | EDGAR ↗ |
| February 13, 2026 | Form 4 | 0001437749-26-004085 | 3 | published | EDGAR ↗ |
| December 23, 2025 | Form 4 | 0001437749-25-038623 | 2 | published | EDGAR ↗ |
| December 19, 2025 | Form 4 | 0001437749-25-038416 | 2 | published | EDGAR ↗ |
| December 2, 2025 | Form 4 | 0001437749-25-036675 | 1 | published | EDGAR ↗ |
Other insiders at DORCHESTER MINERALS, L.P.
- EHRMAN BRADLEY J Chief Executive Officer 12 rows
- MORIYAMA LESLIE A Chief Financial Officer 11 rows
- VAUGHN ROBERT C Director 3 rows
- Box Frank Damon Director 1 row
Everyone on file, with contracts and lobbying under the company's name: DORCHESTER MINERALS, L.P..
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Rule 10b5-1 trading plans The plan must be set up when the insider has no important non-public information.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 6 | 13 | December 2, 2025 | June 2, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.