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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1621434	Black Stone Minerals L.p.	BSM	Crude Petroleum & Natural Gas (1311)	471846692

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1639921	D. Alexander Stuart	1001 Fannin Street, Suite 2020 Houston TX 77002		No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Units Representing Limited Partner Interests	Acquisiton	2015-08-21	50	$13.99	288,198	No	4	P	Direct
Common Units Representing Limited Partner Interests	Acquisiton	2015-08-24	6,950	$13.71	295,148	No	4	P	Direct

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

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Units Representing Limited Partner Interests	2,072,350	Indirect	By North Star Oil & Gas
Common Units Representing Limited Partner Interests	914,682	Indirect	By Topsfield Energy, Ltd.
Common Units Representing Limited Partner Interests	541,885	Indirect	By RDS Investments, L.P.
Common Units Representing Limited Partner Interests	78,265	Indirect	By R D Stuart Jr 1996 Trust

Footnotes

The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions at prices ranging from $13.688 to $13.777, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.