DeWalch D Mark — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

DeWalch D Mark has filed 3 SEC Form 4 filings across 1 company in the last 90 days — buying. Lifetime open-market purchases: $1.48M.

Profile

DeWalch D Mark

Based on the provided SEC filing context, Dewalch D Mark appears to serve as a Director of Black Stone Minerals, L.P. as of the filing date 2026-04-06. Black Stone Minerals, L.P. is an energy company involved in oil and natural gas operations. Public SEC filings list Mark in the director role, but there is limited publicly available information about other biographical details, prior positions, or education. Notwithstanding the limited data, the SEC context identifies him as a corporate insider with a governance role at the referenced partnership.

RoleDirector
Notability20/100

Board memberships

Awards & honors

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2026-07-02BSMBlack Stone Minerals, L.P.A — Grant or award1.3K$13.97$19K
2026-06-02BSMBlack Stone Minerals, L.P.P — Open-market purchase36.4K$13.62$495K
2026-06-02BSMBlack Stone Minerals, L.P.P — Open-market purchase36.4K$13.48$490K
2026-05-28BSMBlack Stone Minerals, L.P.P — Open-market purchase37.6K$13.21$497K
2026-04-06BSMBlack Stone Minerals, L.P.A — Grant or award1.2K$15.12$19K
2026-01-15BSMBlack Stone Minerals, L.P.A — Grant or award14.3K$0.00
2025-10-03BSMBlack Stone Minerals, L.P.A — Grant or award1.4K$13.14$19K
2025-07-03BSMBlack Stone Minerals, L.P.A — Grant or award1.4K$13.08$19K
2024-10-08BSMBlack Stone Minerals, L.P.A — Grant or award1.2K$15.10$19K

Companies — Last 90 Days

Frequently Asked Questions

Who is DeWalch D Mark?

Based on the provided SEC filing context, Dewalch D Mark appears to serve as a Director of Black Stone Minerals, L.P. as of the filing date 2026-04-06. Black Stone Minerals, L.P. is an energy company involved in oil and natural gas operations. Public SEC filings list Mark in the director role, but there is limited publicly available information about other biographical details,…

How many SEC Form 4 filings has DeWalch D Mark submitted recently?

3 primary Form 4 filings in the last 90 days, covering 1 company.

Has DeWalch D Mark been buying or selling stock?

Recorded transactions: 3 open-market purchases ($1.48M) and 0 open-market sales () across all tracked filings.

Where can I see all of DeWalch D Mark's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

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