Form 4: Black Stone Minerals Executive Executes Unit Sale

SVP and General Counsel Luke S. Putman sold 29,386 common units of Black Stone Minerals, L.P. via a pre-arranged trading plan.

Summary

• Luke S. Putman, SVP, General Counsel, and Secretary, sold 29,386 common units of Black Stone Minerals, L.P. (BSM).
• The transaction occurred on May 5, 2026, at a weighted average price of $13.748 per unit.
• The sale was executed pursuant to a Rule 10b5-1 trading plan adopted on December 4, 2025.
• Following the transaction, the reporting person retains beneficial ownership of 702,645 common units.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the sale was pre-planned and represents a small portion of the executive's total holdings.

Positives

• The sale was conducted under a pre-established Rule 10b5-1 trading plan, which is a standard mechanism for executives to sell shares without triggering insider trading concerns.

Negatives

• The transaction represents a reduction in the direct equity stake held by a key member of the executive leadership team.

Risks

• None identified in this specific filing.

Future Outlook

No forward-looking guidance provided in this filing.

Industry Context

StockSavvy.ai notes that executive unit sales under Rule 10b5-1 plans are common in the energy sector and generally reflect personal financial planning rather than a change in corporate strategy or outlook.

Comparison to Industry Standards

• The use of Rule 10b5-1 plans is the industry standard for corporate officers to manage equity holdings while maintaining compliance with SEC regulations.

Stakeholder Impact

• Minimal impact on shareholders as the sale was executed via a pre-arranged plan.

Key Dates

Keywords

Black Stone Minerals, BSM, Insider Trading, Form 4, Oil and Gas, Equity Sale