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Dorchester Minerals (DMLP)

Dorchester Minerals on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as crude petroleum & natural gas.

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369K

Short interest

settlement 2026-09-30

3.9

Days to cover

-0.3 days vs prior

54.7%

Short share of volume

2026-10-13

1,477

Fails to deliver

settlement 2026-08-25

Thu 5 Nov

Next earnings

estimated date

$147K

Insider flow, 90 days

1 buys, 0 sells

As of 2026-10-13.

Short interest

FINRA, twice a month. The newest 24 settlements in the table, 48 in the chart. JSON

As of 30 September 2026, short interest in DMLP is 368,855 shares, down 103,795 shares over the last month. Over the last 48 readings it ranged from 340,576 shares (13 June 2025) to 613,807 shares (15 June 2026). At the reported average volume of 95K shares a day that is 3.9 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-09-30368,855-4.8%94,6293.90
2026-09-15387,275-18.1%92,2074.20
2026-08-31472,650-21.4%122,2263.87
2026-08-14601,682+23.7%176,1743.42
2026-07-31486,537-10.7%367,9321.32
2026-07-15544,659+2.9%110,3144.94
2026-06-30529,368-13.8%214,4142.47
2026-06-15613,807+11.6%120,9205.08
2026-05-29550,152-3.3%186,3562.95
2026-05-15568,837+1.6%160,7023.54
2026-04-30559,605+1.9%169,5393.30
2026-04-15549,186+0.6%165,1403.33
2026-03-31545,954-5.7%193,2772.82
2026-03-13578,768+2.9%189,1553.06
2026-02-27562,574-1.4%126,1504.46
2026-02-13570,496-2.3%184,0333.10
2026-01-30583,664+8.5%195,4742.99
2026-01-15537,919+8.3%147,6963.64
2025-12-31496,735+5.3%176,9482.81
2025-12-15471,774-3.7%232,0692.03
2025-11-28489,758+1.2%224,4622.18
2025-11-14484,163-10.1%236,4682.05
2025-10-31538,249+9.1%96,8985.55
2025-10-15493,528-8.6%95,3335.18

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 13 October 2026, the short share of DMLP volume is 54.7%, up 7.9 points over the last five sessions. Over the last 30 readings it ranged from 19.0% (23 September 2026) to 62.4% (9 October 2026). The latest reading is 13.9 points above the 30-session average of 40.8%, on 28K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-10-1315K28K54.7%0
2026-10-126K19K32.8%0
2026-10-0919K30K62.4%0
2026-10-0816K34K48.4%0
2026-10-0712K45K26.2%0
2026-10-0615K31K46.8%0
2026-10-0534K67K50.9%0
2026-10-025K19K28.6%0
2026-10-0111K28K39.0%0
2026-09-3010K49K19.7%0
2026-09-2921K36K57.5%0
2026-09-289K40K22.7%649
2026-09-2521K56K37.3%0
2026-09-2411K39K28.2%176
2026-09-235K26K19.0%0
2026-09-2216K44K36.2%660
2026-09-2138K71K52.7%10,666
2026-09-1810K26K40.1%0
2026-09-1713K50K26.5%0
2026-09-1626K83K31.5%0
2026-09-1535K97K36.7%0
2026-09-1417K39K45.3%0
2026-09-116K20K29.9%0
2026-09-1015K28K53.4%0
2026-09-0916K31K51.8%0
2026-09-0815K30K52.1%0
2026-09-0419K47K39.4%0
2026-09-0317K34K51.7%543
2026-09-0215K35K43.4%4
2026-09-0127K45K59.7%600

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 25 August 2026, the fails-to-deliver balance in DMLP is 1,477 shares, up 1,377 shares over the last settlement date. Over the last 30 readings it ranged from 12 shares (28 July 2026) to 23,901 shares (21 May 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-08-251,477$29.20$43K
2026-08-20100$28.21$3K
2026-08-1116$26.53$424
2026-08-033,482$27.61$96K
2026-07-29582$27.02$16K
2026-07-2812$27.17$326
2026-07-20200$27.25$5K
2026-06-16997$26.00$26K
2026-06-1249$26.87$1K
2026-05-22150$27.62$4K
2026-05-2123,901$27.39$655K
2026-05-07248$26.10$6K
2026-04-29194$28.23$5K
2026-04-28392$28.15$11K
2026-04-08104$28.08$3K
2026-04-0616,678$27.97$466K
2026-03-25487$27.70$13K
2026-03-244,657$27.47$128K
2026-03-05220$26.56$6K
2026-03-0450$26.77$1K
2026-03-0350$27.05$1K
2026-02-23638$25.36$16K
2026-02-189,134$25.32$231K
2026-02-1366$25.22$2K
2026-02-091,457$24.53$36K
2026-02-051,999$24.59$49K
2026-02-032,863$24.02$69K
2026-02-0210,467$25.41$266K
2026-01-303,788$25.40$96K
2026-01-2919,650$25.34$498K

Insider trades

SEC Form 4, newest first, 50 of 100 shown. JSON

Insiders at DMLP reported 1 open-market buy worth $147K in the last 90 days and no open-market sells. Latest filing: MORIYAMA LESLIE A (Chief Financial Officer) on 2026-08-19.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-08-19MORIYAMA LESLIE AChief Financial OfficerBuy5K$28.30$147K103K
2026-06-01DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy4K$27.50$110K70K
2026-06-01DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy999$27.62$28K66K
2026-06-01DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy3K$27.64$69K65K
2026-05-20DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy6K$28.32$170K63K
2026-05-20DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy2K$28.24$42K57K
2026-05-12EHRMAN BRADLEY JChief Executive OfficerBuy4K$26.78$107K143K
2026-02-13DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy5K$25.29$126K55K
2026-02-12DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy5K$25.08$125K50K
2026-02-11DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy10K$25.29$253K45K
2025-12-22DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy10K$22.30$223K35K
2025-12-19DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy5K$22.23$111K25K
2025-12-18DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy16K$22.28$350K20K
2025-12-17DORCHESTER MINERALS OPERATING LPEntity Under Common ControlBuy4K$22.19$95K4K
2025-12-15MORIYAMA LESLIE AChief Financial OfficerTax withholding2K$0.00$098K
2025-12-15MORIYAMA LESLIE AChief Financial OfficerOption exercise4K$0.00$0100K
2025-12-15EHRMAN BRADLEY JChief Executive OfficerTax withholding2K$0.00$033K
2025-12-15EHRMAN BRADLEY JChief Executive OfficerOption exercise5K$0.00$034K
2025-12-03Box Frank DamonDirectorBuy5K$21.96$110K9K
2025-12-03MORIYAMA LESLIE AChief Financial OfficerTax withholding2K$0.00$096K
2025-12-03MORIYAMA LESLIE AChief Financial OfficerOption exercise4K$0.00$097K
2025-12-03EHRMAN BRADLEY JChief Executive OfficerTax withholding2K$0.00$030K
2025-12-03EHRMAN BRADLEY JChief Executive OfficerOption exercise5K$0.00$031K
2025-12-01MORIYAMA LESLIE AChief Financial OfficerTax withholding6K$21.63$140K93K
2025-12-01MORIYAMA LESLIE AChief Financial OfficerGrant16K$21.63$346K100K
2025-12-01EHRMAN BRADLEY JChief Executive OfficerTax withholding7K$21.63$142K27K
2025-12-01EHRMAN BRADLEY JChief Executive OfficerGrant18K$21.63$389K33K
2025-11-28VAUGHN ROBERT CDirectorBuy195$21.36$4K21K
2025-11-28DORCHESTER MINERALS OPERATING LPEntity Under Common ControlJ58K$21.95$1.3M17
2025-11-26EHRMAN BRADLEY JChief Executive OfficerBuy2K$21.60$54K121K
2025-11-25EHRMAN BRADLEY JChief Executive OfficerBuy1K$21.26$21K119K
2025-11-25VAUGHN ROBERT CDirectorBuy352$21.39$8K20K
2025-11-25VAUGHN ROBERT CDirectorBuy4K$21.41$91K20K
2025-11-25MORIYAMA LESLIE AChief Financial OfficerBuy3K$21.50$65K84K
2025-09-05Box Frank DamonDirectorBuy4K$25.57$102K4K
2025-04-30DORCHESTER MINERALS OPERATING LPOtherBuy10K$28.76$288K58K
2025-03-03EHRMAN BRADLEY JChief Executive OfficerBuy3K$29.80$100K118K
2025-02-06DORCHESTER MINERALS OPERATING LPOtherBuy335$31.06$10K48K
2025-02-04DORCHESTER MINERALS OPERATING LPOtherBuy7K$30.90$201K48K
2025-01-31DORCHESTER MINERALS OPERATING LPOtherBuy8K$31.69$238K41K
2024-12-30DORCHESTER MINERALS OPERATING LPOtherBuy940$33.19$31K34K
2024-12-30DORCHESTER MINERALS OPERATING LPOtherBuy10$33.15$33233K
2024-12-30DORCHESTER MINERALS OPERATING LPOtherBuy4$33.06$13234K
2024-12-26DORCHESTER MINERALS OPERATING LPOtherBuy4K$32.86$131K33K
2024-12-23DORCHESTER MINERALS OPERATING LPOtherBuy1K$32.27$32K29K
2024-12-23DORCHESTER MINERALS OPERATING LPOtherBuy3K$32.20$97K28K
2024-12-23DORCHESTER MINERALS OPERATING LPOtherBuy3K$32.21$81K25K
2024-12-13EHRMAN BRADLEY JChief Executive OfficerTax withholding2K$0.00$027K
2024-12-13MORIYAMA LESLIE AChief Financial OfficerTax withholding2K$0.00$081K
2024-12-13MORIYAMA LESLIE AChief Financial OfficerOption exercise4K$0.00$082K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

No holder on file reports 5% or more of DMLP in its latest filing.

FiledFormHolderSharesOf classEvent
2026-05-1413G/Ano. 2Anthony A. Yoseloffindividual1.3M2.8%2026-03-31
2026-05-1413G/Ano. 2Davidson Kempner Capital Management LPpartnership1.3M2.8%2026-03-31
2026-05-1413G/Ano. 2West Texas Minerals LLCother entity1.3M2.8%2026-03-31

13F holders

Tracked managers holding DMLP at their latest 13F. JSON

1 of the 30 tracked managers held DMLP at their latest 13F, $3.2M in total at quarter-end prices. Citadel Advisors is the largest at $3.2M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 0 cut.

FundQuarterSharesValueOf portfolioChange in shares
Citadel Advisors2026-06-30128K$3.2M0.00%+95K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

What this page is

Dorchester Minerals in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows Dorchester Minerals (DMLP), SEC CIK 1172358, listed on Nasdaq, classified by the SEC as crude petroleum & natural gas. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest
FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-09-30.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-13.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-08-25.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-05-14.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Earnings dates
SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-07.JSON and CSV
Insider trades
SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-08-19.JSON and CSV
Company record
EDGAR filing index for CIK 1172358Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
10 requests a minute without a key, 30 with a free key from a free account.

How to read it

  • Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
  • Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
  • Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other companies the SEC classifies as crude petroleum & natural gas

Datasets

Frequently Asked Questions

How much of DMLP is sold short?
368,855 shares were held short at the 2026-09-30 settlement, 3.9 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is DMLP's daily short volume?
On 2026-10-13, 15,204 of the 27,798 DMLP shares reported to FINRA were sold short, 54.7% of the day's reported volume. Short volume is a flow for one day, not a position.
Does DMLP have fails to deliver?
The SEC's latest file shows 1,477 DMLP shares failed to deliver at settlement 2026-08-25. Fails are reported per settlement date and published twice a month with a lag.
Are DMLP insiders buying or selling?
Insiders at DMLP reported 1 open-market buy worth $147K in the last 90 days and no open-market sells. Latest filing: MORIYAMA LESLIE A (Chief Financial Officer) on 2026-08-19.
Who owns 5% or more of DMLP?
No holder on file reports 5% or more of DMLP in its latest filing.
Which tracked 13F managers own DMLP?
1 of the 30 tracked 13F managers held DMLP shares at their latest filing, $3.2M in all. The largest: Ken Griffin's Citadel Advisors (128K shares, $3.2M).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.