![D. DeWalch](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
D. DeWalch
Director/Board Member at
BLACK STONE MINERALS, L.P.
Net worth: 23 M $ as of 2026-05-30
Profile
D.
Mark DeWalch is currently Independent Director at Black Stone Minerals LP since 2015, Director at Black Stone Minerals GP LLC since 2015, Trustee at Texas Children's Hospital since 2021, and Executive Vice President & Co-Owner at Dewalch FM LLC.
Former roles include Director at Neighborhood Centers, Inc., Director at Black Stone Natural Resources LLC from 2009 to 2015, Chief Financial Officer, Director, EVP & Co-Owner at Dewalch Technologies, Inc. from 1995 to 2022, and President & Co-Owner at Dewalch Holdings LLC from 1985 to 2022.
Education includes undergraduate and MBAistration degrees from The University of Texas at Austin.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-05-31 | 1,705,186 ( 0.8% ) | 23 M $ | 2026-05-30 |
D. DeWalch active positions
| Companies | Position | Start |
|---|---|---|
| BLACK STONE MINERALS, L.P. | Director/Board Member | 2015-02-28 |
Black Stone Minerals GP LLC
 Black Stone Minerals GP LLC Investment Trusts/Mutual FundsMiscellaneous Engages in the acquisitions of mineral and royalty interests | Director/Board Member | 2015-02-28 |
Dewalch FM LLC | Corporate Officer/Principal | - |
Texas Children's Hospital
 Texas Children's Hospital Hospital/Nursing ManagementHealth Services Provides health care services | Director/Board Member | 2021-10-31 |
Former positions of D. DeWalch
| Companies | Position | End |
|---|---|---|
Dewalch Technologies, Inc.
 Dewalch Technologies, Inc. Industrial MachineryProducer Manufacturing Manufactures utility meters and specialty meter locking hardware for the prevention of theft | Director of Finance/CFO | 2021-12-31 |
Dewalch Holdings LLC | President | 2021-12-31 |
Black Stone Natural Resources LLC
 Black Stone Natural Resources LLC Wholesale DistributorsDistribution Services Wholesales building stones | Director/Board Member | 2014-12-31 |
Neighborhood Centers, Inc.
 Neighborhood Centers, Inc. Miscellaneous Commercial ServicesCommercial Services Provides information aimed at volunteers, clients, donors, partners, and news media | Director/Board Member | - |
Training of D. DeWalch
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
42
1st degree connections
9
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 9 |
|---|---|
Black Stone Minerals LP
 Black Stone Minerals LP Investment Trusts/Mutual FundsMiscellaneous Operates as an oil and gas royalty trust | Miscellaneous |
The University of Texas at Austin
 The University of Texas at Austin Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Texas Children's Hospital
Texas Children's Hospital Hospital/Nursing ManagementHealth Services Provides health care services | Health Services |
Neighborhood Centers, Inc.
Neighborhood Centers, Inc. Miscellaneous Commercial ServicesCommercial Services Provides information aimed at volunteers, clients, donors, partners, and news media | Commercial Services |
Dewalch Technologies, Inc.
Dewalch Technologies, Inc. Industrial MachineryProducer Manufacturing Manufactures utility meters and specialty meter locking hardware for the prevention of theft | Producer Manufacturing |
Black Stone Natural Resources LLC
Black Stone Natural Resources LLC Wholesale DistributorsDistribution Services Wholesales building stones | Distribution Services |
Black Stone Minerals GP LLC
Black Stone Minerals GP LLC Investment Trusts/Mutual FundsMiscellaneous Engages in the acquisitions of mineral and royalty interests | Miscellaneous |
Dewalch Holdings LLC | |
Dewalch FM LLC |
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