![Mark Fuller](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>)
Mark Fuller
Chairman at
Crimson Ltd.
Net worth: 1 M $ as of 31/10/2026
Profile
Mark Stephen Charles Fuller was the founder of Chesapeake Partners, Inc. (1989) as Chairman & Chief Executive Officer and Castellum, Inc. (2019) as President, Chief Executive Officer & Director.
Current jobs include Non-Executive Chairman at Crimson Ltd., Chief Revenue Officer at Rimhub, Inc. since 2013, and President at Trophy Point Capital LLC since 2015.
Former jobs include CEO at WidePoint Corp.
(2004-2005), Chief Executive Officer at Chesapeake Government Technologies, Inc., Chief Executive Officer at Techshot Lighting LLC (2017-2020), Chairman at Potomac Officers Club, Director at Teleport Communications Group, Inc., Director at WidePoint Corp., Managing Director at RIVER CAPITAL MANAGEMENT LTD (2002-2010), Director at Mainnerve Federal Services, Inc. (2016-2020), Regional VP at e.spire Communications, Inc. (1994-1999), President at Onepoint Communications Corp.
(1999-2001), Vice President at ACSIS, Inc., Associate Consultant at National Capital Cos.
LLC (2016-2017), and President/COO/CFO at Hathaway Renewable Energy, Inc. (2003-2015).
Education includes undergraduate and MBA degrees from Harvard University and an undergraduate degree from US Military Academy.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
CASTELLUM, INC. 3.08% | 20/03/2026 | 2,923,659 ( 3.08% ) | 1 M $ | 31/10/2026 |
| 17/10/2022 | 752 ( 0.02% ) | 365 $ | 31/10/2026 |
Mark Fuller active positions
| Companies | Position | Start |
|---|---|---|
Crimson Ltd.
 Crimson Ltd. Miscellaneous Commercial ServicesCommercial Services Provides recruitment and consulting services | Chairman | - |
Trophy Point Capital LLC
 Trophy Point Capital LLC Investment ManagersFinance Trophy Point Capital LLC is an active manager. | President | 01/03/2015 |
Rimhub, Inc.
 Rimhub, Inc. Internet Software/ServicesTechnology Services Provides telecommunication services | Corporate Officer/Principal | 01/07/2013 |
Former positions of Mark Fuller
| Companies | Position | End |
|---|---|---|
Techshot Lighting LLC | Chief Executive Officer | 01/12/2020 |
Mainnerve Federal Services, Inc.
 Mainnerve Federal Services, Inc. Information Technology ServicesTechnology Services Provides information technology services | Director/Board Member | 01/12/2020 |
National Capital Cos. LLC
 National Capital Cos. LLC Investment Banks/BrokersFinance Provides investment banking services | Consultant / Advisor | 01/01/2017 |
Hathaway Renewable Energy, Inc.
 Hathaway Renewable Energy, Inc. Oil Refining/MarketingEnergy Minerals Operates cellulosic bio diesel refinery and clean electricity plant | President | 01/01/2015 |
Chesapeake Partners, Inc.
 Chesapeake Partners, Inc. Investment ManagersFinance Chesapeake Partners invests in companies located in the United States. The firm focuses companies operating in the fields of government, healthcare, information technology/services, communication, production/distribution and real estate sectors. It participates in early stage capital requirements. In addition to taking direct ownership positions, the firm offers business advisory and M&A advisory services to their portfolio companies to assist them in improving market positioning, optimizing business performance and maximizing overall returns on investments. | Chief Executive Officer | 01/06/2013 |
Education of Mark Fuller
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
21
1st degree connections
19
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 19 |
|---|---|
e.spire Communications, Inc.
 e.spire Communications, Inc. Major TelecommunicationsCommunications Provides local and long distance telephone, Internet access and Web hosting services | Communications |
Teleport Communications Group, Inc.
 Teleport Communications Group, Inc. Specialty TelecommunicationsCommunications Provides integrated telecommunications services | Communications |
WidePoint Corp.
 WidePoint Corp. Data Processing ServicesTechnology Services Provides information technology solutions to the government and commercial markets | Technology Services |
Onepoint Communications Corp.
 Onepoint Communications Corp. Specialty TelecommunicationsCommunications Provides communications services to multiple dwelling units | Communications |
Harvard University
 Harvard University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Chesapeake Government Technologies, Inc.
 Chesapeake Government Technologies, Inc. Information Technology ServicesTechnology Services Provides information technology services | Technology Services |
ACSIS, Inc.
 ACSIS, Inc. Packaged SoftwareTechnology Services Develops supply chain optimization software | Technology Services |
US Military Academy
 US Military Academy Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Potomac Officers Club
 Potomac Officers Club Miscellaneous Commercial ServicesCommercial Services Operates as a membership organization dedicated to connecting and empowering executives | Commercial Services |
Alliance Fund Managers Ltd.
 Alliance Fund Managers Ltd. Investment ManagersFinance Alliance Fund Managers invests in small and medium sized companies located in the United Kingdom, primarily in Liverpool and North-West of England. The firm focuses on across a broad range of sectors and industries. It provides financing for debt, acquisitions, management buy outs/buy ins, growth and early stage capital requirements with an investment size ranging from GBP 0.3 to 2 million. | Finance |
Crimson Ltd.
Crimson Ltd. Miscellaneous Commercial ServicesCommercial Services Provides recruitment and consulting services | Commercial Services |
Chesapeake Partners, Inc.
Chesapeake Partners, Inc. Investment ManagersFinance Chesapeake Partners invests in companies located in the United States. The firm focuses companies operating in the fields of government, healthcare, information technology/services, communication, production/distribution and real estate sectors. It participates in early stage capital requirements. In addition to taking direct ownership positions, the firm offers business advisory and M&A advisory services to their portfolio companies to assist them in improving market positioning, optimizing business performance and maximizing overall returns on investments. | Finance |
Rimhub, Inc.
Rimhub, Inc. Internet Software/ServicesTechnology Services Provides telecommunication services | Technology Services |
Castellum, Inc.
 Castellum, Inc. Chemicals: Major DiversifiedProcess Industries Develops water treatment and sanitization technologies | Process Industries |
Trophy Point Capital LLC
Trophy Point Capital LLC Investment ManagersFinance Trophy Point Capital LLC is an active manager. | Finance |
National Capital Cos. LLC
National Capital Cos. LLC Investment Banks/BrokersFinance Provides investment banking services | Finance |
Hathaway Renewable Energy, Inc.
Hathaway Renewable Energy, Inc. Oil Refining/MarketingEnergy Minerals Operates cellulosic bio diesel refinery and clean electricity plant | Energy Minerals |
Mainnerve Federal Services, Inc.
Mainnerve Federal Services, Inc. Information Technology ServicesTechnology Services Provides information technology services | Technology Services |
Techshot Lighting LLC |
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