董事
D. Mark DeWalch is a director of Black Stone Minerals, L.P. (BSM), an oil and natural gas mineral and royalty company listed on the NYSE.[[2]](https://www.gurufocus.com/insider/81189/d-mark-dewalch)[[4]](https://www.quiverquant.com/stock/BSM/insiders/) As a corporate insider, he has been an active investor in the partnership, reporting multiple open‑market purchases of BSM units on SEC Form 4, including an acquisition of 37,650 common units representing limited partner interests and other recent transactions that have brought his holdings to more than 960,000 units of Black Stone Minerals.[[1]](https://www.benzinga.com/insights/news/26/05/52875980/director-of-black-stone-minerals-purchased-497k-in-stock)[[2]](https://www.gurufocus.com/insider/81189/d-mark-dewalch)[[3]](https://investing.com/news/insider-trading-news/black-stone-minerals-director-d-mark-dewalch-acquires-497k-units-93CH-4715606?ampMode=1)[[6]](https://www.secform4.com/insider-trading/1621434.htm) Public filings list his mailing address in Houston, Texas, reflecting his professional base in the U.S. energy sector.[[2]](https://www.gurufocus.com/insider/81189/d-mark-dewalch)
According to ownership and insider-trading records compiled from SEC disclosures, DeWalch’s BSM position is valued at several million dollars, and he has reported only buy transactions in the partnership over the past several years, underscoring a long-term, aligned interest with other unitholders.[[2]](https://www.gurufocus.com/insider/81189/d-mark-dewalch) At Black Stone Minerals, he serves on the board alongside senior executives including Chairman, President, and CEO Thomas L. Carter Jr., contributing to oversight of a portfolio of mineral and royalty interests spanning millions of gross acres.[[2]](https://www.gurufocus.com/insider/81189/d-mark-dewalch)[[4]](https://www.quiverquant.com/stock/BSM/insiders/) Specific details of DeWalch’s prior career roles and educational background are not disclosed in the publicly available insider-trading and company governance sources used here.[[2]](https://www.gurufocus.com/insider/81189/d-mark-dewalch)
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