Welcome to our dedicated page for Black Stone Minerals L P SEC filings (Ticker: BSM), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Black Stone Minerals, L.P. filings document the reporting obligations of a publicly traded oil and natural gas mineral and royalty partnership. Current reports on Form 8-K furnish quarterly and annual operating results, mineral and royalty production, working-interest volumes, net income, Adjusted EBITDA, distributable cash flow, cash distributions, distribution coverage, debt, and guidance.
Proxy materials describe annual limited partner voting matters, including elections to the Board of Directors of the partnership’s general partner. Other 8-K disclosures record governance and executive matters, including completed officer and director appointments, compensation arrangements, and amendments to prior material-event reports. Together, the filings cover operating performance, capital structure, unitholder distributions, governance, and risk-related public-company disclosure for BSM.
Black Stone Minerals, L.P. reported voting results from its 2026 annual meeting of limited partners held on June 11, 2026. Unitholders elected all twelve nominees to the Board of Directors of the general partner to serve until the 2027 annual meeting and until successors are elected.
Unitholders also ratified the appointment of Deloitte & Touche LLP as independent registered public accounting firm for the year ending December 31, 2026. In addition, they approved, on a non-binding advisory basis, the compensation of the general partner’s named executive officers for the fiscal year ended December 31, 2025.
Black Stone Minerals, L.P. director D. Mark DeWalch reported indirect open-market purchases of a total of 72,726 common units representing limited partner interests through DeWalch Diversified LP. The purchases were made at weighted average prices of $13.476 and $13.6217 per unit, across multiple trades within disclosed price ranges.
Following these transactions, DeWalch Diversified LP held 631,248 common units indirectly. Separate holding entries show additional indirect ownership by the reporting person’s wife and a trust, as well as direct ownership reported in his own name.
Black Stone Minerals, L.P. director D. Mark DeWalch reported an open-market purchase of 37,650 common units representing limited partner interests on May 28, 2026 at a weighted average price of $13.2096 per unit. After this transaction, he directly holds 431,495 common units.
The filing also shows indirect holdings, including 6,749 common units held by his wife, 40,809 common units held by the Donald Mark DeWalch Trust, and 558,522 common units held by DeWalch Diversified LP. The price reflects multiple trades between $13.19 and $13.205 per unit.
Black Stone Minerals, L.P. executive chairman and director Carter Thomas L Jr reported an open-market purchase of common units representing limited partner interests. He bought 1,120 common units at a weighted average price between $13.49 and $13.50 per unit. After this purchase, his direct ownership increased to 3,682,724 common units, with additional indirect holdings reported through various family-related entities and trusts.
Black Stone Minerals, L.P. director Ashley J. Longmaid reported an open-market sale of 11,128 common units representing limited partner interests at a weighted average price of $13.4523 per unit. Following the sale, Longmaid directly holds 137,335 common units. The sale was executed through multiple trades between $13.41 and $13.48.
Black Stone Minerals, L.P. Executive Chairman Carter Thomas L Jr reported buying additional common units representing limited partner interests in three open-market purchases. He acquired 23,604 units on May 8 at a weighted average price of $13.3186, 25,000 units on May 11 at $13.4742, and 19,154 units on May 12 at $13.4754 per unit. After these transactions, he directly owns 3,681,604 common units, indicating a net increase in his personal stake.
BSM Form 144 notice reports proposed sale related to 11,128 shares of Common Stock tied to restricted stock vesting under a registered plan with a transaction date of 01/13/2026. The filing lists an amount of $149,697.19 and identifies NYSE as the market.
Black Stone Minerals, L.P. senior vice president, general counsel, and secretary Luke Stevens Putman sold 29,386 common units representing limited partner interests on April 6, 2026 in open-market transactions at a weighted average price of $14.4517 per unit.
The units were sold at prices ranging from $14.31 to $14.64. These sales were made under a pre-arranged Rule 10b5-1 trading plan that the reporting person adopted on December 4, 2025, meaning the trades were scheduled in advance. After these transactions, he directly held 732,031 common units.
Black Stone Minerals, L.P. senior vice president, general counsel, and secretary Luke Stevens Putman sold 29,386 common units representing limited partner interests in an open-market transaction at a weighted average price of $13.748 per unit. After the sale, he directly holds 702,645 units. The transactions were carried out under a Rule 10b5-1 trading plan adopted on December 4, 2025.
Black Stone Minerals, L.P. executive Luke Stevens Putman, SVP, General Counsel and Secretary, reported an open-market sale of 30,276 common units representing limited partner interests on March 5, 2026 at an average price of $15.2459 per unit. After this transaction, he directly holds 761,417 common units. The filing notes that these sales were made under a Rule 10b5-1 trading plan adopted on December 4, 2025. This Form 4/A amends a prior Form 4 that inadvertently omitted the trading plan adoption date.