Insider txns (12m)
40
Stock / equity
DMLP DORCHESTER MINERALS, L.P.
- Company
- DORCHESTER MINERALS, L.P.
- Security
- Equity
- Size, estimated from filings
- Small cap ($300M – $2B)
- Insiders on record
- 5
- Members of Congress
- 1
- Latest trade on record
- August 19, 2026
DMLP (DORCHESTER MINERALS, L.P.) has 40 disclosed insider transactions from 5 insiders in the last 12 months (21 open-market buys, 6 sales, about $4.6M at reported prices) and 1 congressional trade from 1 member of Congress. The most recent disclosure was filed August 19, 2026.
Open-market buys / sales
21 / 6
Congress trades (12m)
1
Distinct filers (12m)
6
Share price
Price and chart by TradingView for DORCHESTER MINERALS, L.P.. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
DMLP in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
6 people account for the disclosed buying and selling in DMLP over the last 12 months; the most active is DORCHESTER MINERALS OPERATING LP with $1.7M.
Prices insiders traded at
What price did insiders buy and sell at? Each marker is one open-market trade at the share price reported on its Form 4.
▲ Bought▼ SoldAverage reported price that day
Insiders reported 21 open-market trades in DMLP since Nov 25, 2025, at prices from $21.26 to $28.32; the most recent was a purchase at $28.30 on Aug 19, 2026. These are the prices on the filings, not adjusted for stock splits, and not a market price series.
Insider holdings over time
Is an insider building or unwinding a position? Shares held directly after each filing.
DORCHESTER MINERALS OPERATING LPMORIYAMA LESLIE A
DORCHESTER MINERALS OPERATING LP reported 70,017 shares held after the latest filing, against 17 at the first on record.
Insiders trading DMLP
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| DORCHESTER MINERALS OPERATING LP | Insider | 13 | 12 | 0 | $1.7M | — | June 1, 2026 |
| EHRMAN BRADLEY J | Chief Executive Officer | 12 | 3 | 3 | $182K | $142K | May 12, 2026 |
| MORIYAMA LESLIE A | Chief Financial Officer | 11 | 2 | 3 | $212K | $140K | August 19, 2026 |
| VAUGHN ROBERT C | Director | 3 | 3 | 0 | $103K | — | November 28, 2025 |
| Box Frank Damon | Director | 1 | 1 | 0 | $110K | — | December 3, 2025 |
What kind of transactions these are 5 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| P | Open-market purchase | 21 | 95,535 | $2.3M |
| M | Option exercise or conversion | 8 | 35,810 | — |
| F | Shares withheld for tax | 6 | 19,844 | $281K |
| A | Grant or award | 4 | 68,000 | $735K |
| J | Other acquisition or disposal | 1 | 58,000 | $1.3M |
What each code means: Form 4 transaction codes.
Members of Congress trading DMLP
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| August Pfluger | Representative (TX, District 11), Republican | 1 | 1 | 0 | $15K–$50K | March 13, 2026 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| MORIYAMA LESLIE A | Buy P | August 19, 2026 | August 19, 2026 | 0d | 5,197 | $28 | $147K | Form 4 ↗ | ||
| DORCHESTER MINERALS OPERATING LP | Buy P | June 1, 2026 | June 2, 2026 | 1d | 4,001 | $28 | $110K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | June 1, 2026 | June 2, 2026 | 1d | 999 | $28 | $28K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | June 1, 2026 | June 2, 2026 | 1d | 2,500 | $28 | $69K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | May 20, 2026 | May 22, 2026 | 2d | 6,000 | $28 | $170K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | May 20, 2026 | May 22, 2026 | 2d | 1,500 | $28 | $42K | 10b5-1 plan | Form 4 ↗ | |
| EHRMAN BRADLEY J | Buy P | May 12, 2026 | May 12, 2026 | 0d | 4,000 | $27 | $107K | indirect | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | February 13, 2026 | February 13, 2026 | 0d | 5,000 | $25 | $126K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | February 12, 2026 | February 13, 2026 | 1d | 5,000 | $25 | $125K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | February 11, 2026 | February 13, 2026 | 2d | 10,000 | $25 | $253K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | December 22, 2025 | December 23, 2025 | 1d | 10,000 | $22 | $223K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | December 19, 2025 | December 23, 2025 | 4d | 5,000 | $22 | $111K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | December 18, 2025 | December 19, 2025 | 1d | 15,729 | $22 | $350K | 10b5-1 plan | Form 4 ↗ | |
| DORCHESTER MINERALS OPERATING LP | Buy P | December 17, 2025 | December 19, 2025 | 2d | 4,271 | $22 | $95K | 10b5-1 plan | Form 4 ↗ | |
| MORIYAMA LESLIE A | Option / conversion M | December 15, 2025 | December 17, 2025 | 2d | 4,351 | — | — | derivative | Form 4 ↗ | |
| MORIYAMA LESLIE A | Sell F | December 15, 2025 | December 17, 2025 | 2d | 1,756 | — | — | Form 4 ↗ | ||
| MORIYAMA LESLIE A | Option / conversion M | December 15, 2025 | December 17, 2025 | 2d | 4,351 | — | — | Form 4 ↗ | ||
| EHRMAN BRADLEY J | Option / conversion M | December 15, 2025 | December 17, 2025 | 2d | 4,727 | — | — | derivative | Form 4 ↗ | |
| EHRMAN BRADLEY J | Sell F | December 15, 2025 | December 17, 2025 | 2d | 1,719 | — | — | Form 4 ↗ | ||
| EHRMAN BRADLEY J | Option / conversion M | December 15, 2025 | December 17, 2025 | 2d | 4,727 | — | — | Form 4 ↗ | ||
| MORIYAMA LESLIE A | Option / conversion M | December 3, 2025 | December 5, 2025 | 2d | 4,017 | — | — | derivative | Form 4 ↗ | |
| MORIYAMA LESLIE A | Sell F | December 3, 2025 | December 5, 2025 | 2d | 1,621 | — | — | Form 4 ↗ | ||
| MORIYAMA LESLIE A | Option / conversion M | December 3, 2025 | December 5, 2025 | 2d | 4,017 | — | — | Form 4 ↗ | ||
| EHRMAN BRADLEY J | Option / conversion M | December 3, 2025 | December 5, 2025 | 2d | 4,810 | — | — | derivative | Form 4 ↗ | |
| EHRMAN BRADLEY J | Sell F | December 3, 2025 | December 5, 2025 | 2d | 1,749 | — | — | Form 4 ↗ | ||
| EHRMAN BRADLEY J | Option / conversion M | December 3, 2025 | December 5, 2025 | 2d | 4,810 | — | — | Form 4 ↗ | ||
| Box Frank Damon | Buy P | December 3, 2025 | December 3, 2025 | 0d | 5,000 | $22 | $110K | Form 4 ↗ | ||
| MORIYAMA LESLIE A | Other A | December 1, 2025 | December 3, 2025 | 2d | 16,000 | — | — | derivative | Form 4 ↗ | |
| MORIYAMA LESLIE A | Sell F | December 1, 2025 | December 3, 2025 | 2d | 6,456 | $22 | $140K | Form 4 ↗ | ||
| MORIYAMA LESLIE A | Other A | December 1, 2025 | December 3, 2025 | 2d | 16,000 | $22 | $346K | Form 4 ↗ | ||
| EHRMAN BRADLEY J | Other A | December 1, 2025 | December 3, 2025 | 2d | 18,000 | — | — | derivative | Form 4 ↗ | |
| EHRMAN BRADLEY J | Sell F | December 1, 2025 | December 3, 2025 | 2d | 6,543 | $22 | $142K | Form 4 ↗ | ||
| EHRMAN BRADLEY J | Other A | December 1, 2025 | December 3, 2025 | 2d | 18,000 | $22 | $389K | Form 4 ↗ | ||
| VAUGHN ROBERT C | Buy P | November 28, 2025 | December 2, 2025 | 4d | 195 | $21 | $4,165 | Form 4 ↗ | ||
| DORCHESTER MINERALS OPERATING LP | Other J | November 28, 2025 | December 2, 2025 | 4d | 58,000 | $22 | $1.3M | Form 4 ↗ | ||
| VAUGHN ROBERT C | Buy P | November 25, 2025 | November 28, 2025 | 3d | 352 | $21 | $7,529 | Form 4 ↗ | ||
| VAUGHN ROBERT C | Buy P | November 25, 2025 | November 28, 2025 | 3d | 4,263 | $21 | $91K | Form 4 ↗ | ||
| MORIYAMA LESLIE A | Buy P | November 25, 2025 | November 28, 2025 | 3d | 3,041 | $22 | $65K | Form 4 ↗ | ||
| EHRMAN BRADLEY J | Buy P | November 26, 2025 | November 26, 2025 | 0d | 2,487 | $22 | $54K | indirect | Form 4 ↗ | |
| EHRMAN BRADLEY J | Buy P | November 25, 2025 | November 26, 2025 | 1d | 1,000 | $21 | $21K | indirect | Form 4 ↗ |
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| August Pfluger | Buy | March 13, 2026 | April 15, 2026 | 33d | — | — | $15K–$50K | House PTR ↗ |
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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.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 1 | 1 | April 15, 2026 | April 15, 2026 | House Clerk search |
| SEC EDGAR, Form 4 | 19 | 40 | November 26, 2025 | August 19, 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.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.