![Michael Toporek](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>)
Michael Toporek
Chairman at
CAPSTONE HOLDING CORP.
Net worth: 42 M $ as of 2026-05-30
Profile
Michael M.
Toporek is the founder of Brookstone Partners, founded in 2003, serving as Managing General Partner since 2011.
Mr. Toporek is the founder of Brookstone Partners IAC, Inc., founded in 2003, serving as Managing General Partner since 2003.
Current jobs include Executive Chairman at Soluna Holdings, Inc. since 2023, Chairman at Capstone Holding Corp.
since 2024, Director at MTI Instruments, Inc. since 2016, Director at Harmattan Energy Ltd., President & Director at EcoChain, Inc. since 2020, Board Member at Virginia Abrasives Corp.
since 2019, Board Member & Investor at Denison Pharmaceuticals LLC since 2013, Trustee at Harlem Academy, President at Brookstone Partners Acquisition XXIV LLC, and President at Brookstone Partners Acquisition XIV LLC.
Former jobs include Director at Glowpoint, Inc., Director at FirstBest Systems LLC, Principal at TCF National Bank (Investment Management), Principal at Cowen & Co. LLC, Principal at UBS Securities LLC, Principal at Dillon, Read & Co., Inc., Board Member & Investor at Anomatic Corp.
from 2005 to 2016, Board Member & Investor at Limos.com, Inc. from 2008 to 2012, and Board Member & Investor at WoodCrafters Home Products LLC from 2008 to 2013.
Education includes undergraduate and MBAistration degrees from The University of Chicago.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
SOLUNA HOLDINGS, INC. 15.14% | 2026-05-31 | 17,132,816 ( 15.14% ) | 29 M $ | 2026-05-30 |
| 2024-12-10 | 1,246,188 ( 25.33% ) | 13 M $ | 2026-05-30 | |
| 2026-05-06 | 391,678 ( 2.71% ) | 125 337 $ | 2026-05-30 |
Michael Toporek active positions
| Companies | Position | Start |
|---|---|---|
| CAPSTONE HOLDING CORP. | Chairman | - |
| SOLUNA HOLDINGS, INC. | Chairman | 2023-04-29 |
Brookstone Partners Acquisition XXIV LLC
 Brookstone Partners Acquisition XXIV LLC Investment ManagersFinance Functions as a private equity fund | President | - |
Brookstone Partners IAC, Inc.
 Brookstone Partners IAC, Inc. Investment ManagersFinance Provides investment advice | Chief Executive Officer | 2002-12-31 |
Denison Pharmaceuticals LLC
 Denison Pharmaceuticals LLC Industrial MachineryProducer Manufacturing Provides contract manufacturing and packaging solutions to the branded pharmaceuticals industry | Director/Board Member | 2013-06-30 |
Virginia Abrasives Corp.
 Virginia Abrasives Corp. Industrial SpecialtiesProcess Industries Manufactures and distributes abrasives products | Director/Board Member | 2019-04-30 |
EcoChain, Inc.
 EcoChain, Inc. Data Processing ServicesTechnology Services Develops and operates ultra low-cost green data centers focused on crypto currency mining | President | 2019-12-31 |
MTI Instruments, Inc.
 MTI Instruments, Inc. Metal FabricationProducer Manufacturing Manufactures precision tools, systems and solutions | Director/Board Member | 2015-12-31 |
Brookstone Partners Acquisition XIV LLC
 Brookstone Partners Acquisition XIV LLC Financial ConglomeratesFinance Functions as investment and private equity fund | President | - |
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Former positions of Michael Toporek
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Training of Michael Toporek
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
40
1st degree connections
22
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 22 |
|---|---|
Soluna Holdings, Inc.
 Soluna Holdings, Inc. Electronic Equipment/InstrumentsElectronic Technology Manufactures, designs and sells test and measurement instruments and systems | Electronic Technology |
Capstone Holding Corp.
 Capstone Holding Corp. Wholesale DistributorsDistribution Services Operates as a holding company whose subsidiary distributes masonry stone products for residential and commercial construction industry | Distribution Services |
TCF National Bank (Investment Management)
 TCF National Bank (Investment Management) Investment ManagersFinance Profile Unavailable. | Finance |
Glowpoint, Inc.
 Glowpoint, Inc. Specialty TelecommunicationsCommunications Provides cloud and managed visual communication solutions | Communications |
Cowen & Co. LLC
 Cowen & Co. LLC Investment Banks/BrokersFinance Provides brokerage services | Finance |
UBS Securities LLC
 UBS Securities LLC Investment Banks/BrokersFinance Provides brokerage services | Finance |
Dillon, Read & Co., Inc.
 Dillon, Read & Co., Inc. Investment Banks/BrokersFinance Provides brokerage services | Finance |
The University of Chicago
 The University of Chicago Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Anomatic Corp.
 Anomatic Corp. Industrial SpecialtiesProcess Industries Provides anodizing, stamping and packaging services | Process Industries |
MTI Instruments, Inc.
MTI Instruments, Inc. Metal FabricationProducer Manufacturing Manufactures precision tools, systems and solutions | Producer Manufacturing |
Brookstone Partners
 Brookstone Partners Investment ManagersFinance Brookstone Partners is an active manager that seeks investment opportunities in companies located in North America. The firm targets companies operating in the sectors of aerospace, building products, healthcare, medical, packaging, and plastics. It targets firms with EBITDA of $2.5 million to $10 million and EBITDA margins 10% or greater, and also a target equity investment of $5 million to $25 million. The targeted revenue is ranging from $20 to $100 million and lastly, an enterprise value of $10 million to $80 million. It also targets majority interest. | Finance |
Limos.com, Inc.
 Limos.com, Inc. Other TransportationTransportation Provides online limousine rental and ground transportation services | Transportation |
FirstBest Systems LLC
 FirstBest Systems LLC Packaged SoftwareTechnology Services Delivers underwriting management system solutions | Technology Services |
Virginia Abrasives Corp.
Virginia Abrasives Corp. Industrial SpecialtiesProcess Industries Manufactures and distributes abrasives products | Process Industries |
Denison Pharmaceuticals LLC
Denison Pharmaceuticals LLC Industrial MachineryProducer Manufacturing Provides contract manufacturing and packaging solutions to the branded pharmaceuticals industry | Producer Manufacturing |
WoodCrafters Home Products LLC
 WoodCrafters Home Products LLC Home FurnishingsConsumer Durables Manufactures home furniture products | Consumer Durables |
Harlem Academy
 Harlem Academy Other Consumer ServicesConsumer Services Operates as a co-educational school | Consumer Services |
Brookstone Partners Acquisition XXIV LLC
Brookstone Partners Acquisition XXIV LLC Investment ManagersFinance Functions as a private equity fund | Finance |
Brookstone Partners Acquisition XIV LLC
Brookstone Partners Acquisition XIV LLC Financial ConglomeratesFinance Functions as investment and private equity fund | Finance |
EcoChain, Inc.
EcoChain, Inc. Data Processing ServicesTechnology Services Develops and operates ultra low-cost green data centers focused on crypto currency mining | Technology Services |
Harmattan Energy Ltd. | |
Brookstone Partners IAC, Inc.
Brookstone Partners IAC, Inc. Investment ManagersFinance Provides investment advice | Finance |
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