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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1172358	Dorchester Minerals Lp	DMLP	Crude Petroleum & Natural Gas (1311)	810551518

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1200964	Jr C H Allen	3838 Oak Lawn Ave Ste 300 Dallas TX 75219	Chief Financial Officer	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Units	Acquisiton	2010-07-27	600	$26.50	135,880	No	4	P	Direct
Common Units	Acquisiton	2010-07-27	600	$26.40	136,480	No	4	P	Direct
Common Units	Acquisiton	2010-07-28	200	$26.30	136,680	No	4	P	Direct
Common Units	Acquisiton	2010-07-28	400	$26.50	26,540	No	4	P	Direct
Common Units	Acquisiton	2010-07-28	400	$26.45	26,940	No	4	P	Direct
Common Units	Acquisiton	2010-07-28	200	$26.40	27,140	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct
No	4	P	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Units	5,531	Indirect	.
Common Units	53,224	Indirect	.

Footnotes

These common units are held jointly by Mr. Allen and his spouse.
These common units are owned by Mr. Allen directly in his individual name, IRA or in Keogh Plans.
Mr. Allen disclaims beneficial ownership of those common units owned by SAM Partners Management, Inc. in which he does not have a pecuniary interest. Mr. Allen is the Secretary and a shareholder of SAM Partners Management, Inc.
Mr. Allen disclaims beneficial ownership of those common units owned by Smith Allen Oil & Gas, Inc. in which he does not have a pecuniary interest. Mr. Allen is the Secretary and a shareholder of Smith Allen Oil & Gas, Inc.